Engine and peripherals 13B DIESEL INJECTION DCM 1.2 injection Program No.: 4C Vdiag No.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Introduction 13B 1. SCOPE OF THIS DOCUMENT This document presents the fault finding method applicable to all computers with the following specifications: Vehicles: LOGAN / SANDERO / THALIA 2 / SYMBOL 2 Engines: K9K 718, 740, 790, 792, 794, 796, 880, 890. Function concerned: K9 DELPHI (DCM 1.2) COMMON RAIL Direct diesel injection Name of computer: DCM 1.2 injection Program No.: 4C Vdiag No.: 08 2.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Introduction 13B Faults Faults are declared as either present or stored (depending on whether they appeared in a certain context and have disappeared since, or whether they remain present but have not been diagnosed within the current context).
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Introduction 4.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Introduction 13B 4. FAULT FINDING PROCEDURE (continued) Wiring check Fault finding problems Disconnecting the connectors and/or manipulating the wiring may temporarily clear the cause of a fault. Electrical measurements of voltage, resistance and insulation are generally correct, especially if the fault is not present when the analysis is made (stored fault).
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Introduction 13B 5. FAULT FINDING LOG IMPORTANT IMPORTANT All faults involving a complex system call for thorough diagnostics with the appropriate tools. The FAULT FINDING LOG, which should be completed during the fault finding procedure, ensures a record is kept of the procedure carried out. It is an essential document when consulting the manufacturer.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Cleanliness guidelines 13B I - RISKS ASSOCIATED WITH CONTAMINATION The high pressure direct injection system is highly sensitive to contamination. The risks caused by the introduction of contamination are: – damage to or destruction of the high pressure injection system, – a component seizing up, – a component losing its sealing. All After-Sales operations must be performed under very clean conditions.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Cleanliness guidelines 13B II - INSTRUCTIONS TO BE FOLLOWED BEFORE CARRYING OUT ANY WORK IMPORTANT Before carrying out any work on the high pressure injection system, protect: – the accessories belts, – the electrical accessories, (starter, alternator, electric power-assisted steering pump), – the flywheel surface, to prevent any diesel from running onto the clutch friction plate.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Cleanliness guidelines 13B III - INSTRUCTIONS TO BE FOLLOWED DURING THE OPERATION As soon as the circuit is open, all openings must be plugged to prevent impurities from entering the system. The plugs to be used are available from the Parts Department. The plugs must not be reused under any circumstances. Seal the pouch shut, even if it has to be opened shortly afterwards. The ambient atmosphere carries contamination.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – System operation 13B System outline The DCM1.2 injection system used on the K9K engine is an electronically managed high pressure injection system. The fuel is compressed by a high pressure pump then stored in a rail that feeds the injectors. Injection takes place when a current pulse is applied to the injector holders.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – System operation 13B An accelerometer is used to monitor some of the fuel injection deviation. This has several roles: – Protecting the engine by detecting injection leaks (disabled on the basic version). – Checking the pilot quantity by measuring deviation and variation. The quantity of fuel injected and the exact moment the mixture ignites can be readjusted by changing both the injection duration and advance.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – System operation 13B Idling speed regulation The computer handles the calculation of idling speed. This has to take account of the instantaneous power level to be supplied, according to the status of the following components: – engine coolant temperature, – gear ratio engaged, – battery charge, – electrical consumers (Additional heating, Air conditioning, Fan Unit, electric windows, etc.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – System operation 13B Function: Air flow management EGR valve control The EGR system (Exhaust gas recirculation) comprises a proportional EGR valve, with a built-in valve position feedback potentiometer. The EGR valve position is controlled by the potentiometer in a closed loop and/or by changes in the estimated air flow. Calculating the air flow The K9K 790 and 794 engines are not fitted with an air flowmeter.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – System operation 13B Functions included Air conditioning management assistance For models with air conditioning, the DCM 1.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – System operation 13B Instrument panel display The computer manages the data display on the instrument panel relating to engine operation. There are six functions concerned: – the On board diagnostics MIL (Malfunction Indicator Lamp), – pre-postheating, – coolant temperature, – Level 1 (non-critical fault) and Level 2 (emergency stop) engine faults. – detection of water in the fuel (depending on instrument panel).
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – System operation 13B Faults that activate the OBD warning light Tool fault Diagnostic tool name Specification CO - CO. 0 CC.1 - 1.DEF DF016 EGR control circuit DF026 Cylinder 1 injector circuit control CO - CC DF027 Cylinder 2 injector circuit control CO - CC DF028 Cylinder 3 injector circuit control CO - CC DF029 Cylinder 4 injector circuit control CO - CC DF038 Computer 3.DEF DF107 Computer memory 2.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Replacement of components 13B COMPUTER REPLACEMENT, PROGRAMMING AND REPROGRAMMING OPERATIONS The system can be programmed via the diagnostic socket using the diagnostic tool (see Technical Note 3585A Computer programming and reprogramming procedure and Technical Note 9869A Computer programming and reprogramming procedure and follow the instructions given by the diagnostic tool).
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Replacement of components 13B Any time the computer has been programmed: – Switch off the ignition. – Switch on the ignition and use the diagnostic tool to carry out the following steps: – Use command SC001 Write saved data to restore the C2I and the engine adaptive programming. – Run command VP010 Write VIN. – Run command AC028 Static test.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Replacement of components 13B REPLACING THE INJECTORS Note: C2I (individual injector correction) is a calibration carried out in the factory on each injector to adjust the flow of each injector precisely. The correction values are written on a label affixed to each injector, then entered in the injection computer, which can then actuate each injector by taking account of their manufacturing variation.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Replacement of components 13B REPLACING THE EGR VALVE If the EGR valve is replaced, program the new valve's offset position. Switch on the ignition and use the diagnostic tool to perform the following step: – run command RZ002 EGR adaptives to clear the old offset using the EGR programming clearing procedure. IMPORTANT Do not use this command if the valve is not new. MR-453-X79-13B000$040.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Configurations and programming 13B SETTINGS VP001: VP002: VP003: VP004: Cylinder 1 injector Cylinder 2 injector Cylinder 3 injector Cylinder 4 injector These commands enable you to manually write the calibration code marked on the injector. Use these commands after replacing the injector or replacing or (re)programming the computer, when command SC001 Write saved data does not work. VP010: Write VIN.
DCM 1.2 injection Program No.: 4C Vdiag No.
DCM 1.2 injection Program No.: 4C Vdiag No.
DCM 1.2 injection Program No.: 4C Vdiag No.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF001 PRESENT OR STORED NOTES 13B COOLANT TEMPERATURE SENSOR CIRCUIT CO.1: Open circuit or short circuit to +12 V CC.0: Short circuit to earth Special notes: If fault DF001 is present, the preheating time is greater than 10 seconds and the engine fan switches on at low speed (Fan assembly 1).
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF002 PRESENT OR STORED 13B AIR TEMPERATURE SENSOR CIRCUIT CO.1: Open circuit or short circuit to +12 V CC.0: Short circuit to earth 1.DEF: Inconsistency Priority when dealing with a number of faults: – DF113 Sensor supply voltage. NOTES Special notes: Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2 or Symbol 2.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF002 CONTINUED Check the insulation, continuity and the absence of interference resistance on the following connections: ● 3B between components 120 and 799, ● 3FB (or 3FBA) of component 799, ● NH of component 799.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF003 PRESENT OR STORED 13B ATMOSPHERIC PRESSURE SENSOR CIRCUIT CO.0: Open circuit or short circuit to earth CC.1: Short circuit on + 12 V Special notes: The atmospheric pressure sensor is incorporated into the injection computer. NOTES Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B ENGINE SPEED SENSOR CIRCUIT DF005 PRESENT OR STORED NOTES 1.DEF: Inconsistency 2.DEF: Inconsistency 3.DEF: Too many additional teeth 4.DEF: Teeth missing 5.DEF: Additional teeth 6.DEF: Too many teeth missing Special notes: If fault DF005, 1.DEF, 2.DEF, 3.DEF, or 6.DEF is present: the engine stops and the level 2 warning light illuminates. If fault DF005, 4.DEF or 5.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B RAIL PRESSURE SENSOR CIRCUIT DF007 PRESENT OR STORED CC.0: Short circuit to earth CO.1: Open circuit or short circuit to +12 V 1.DEF: Inconsistency 2.DEF: Below minimum threshold 3.DEF: Above maximum threshold 4.DEF: Value outside permitted tolerance Priority when dealing with a number of faults: – DF113 Sensor supply voltage.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF008 PRESENT OR STORED 13B PEDAL POTENTIOMETER GANG 1 CIRCUIT CO.0: Open circuit or short circuit to earth CC.1: Short circuit on + 12 V 1.DEF: Inconsistency between pedal gang 1 and gang 2 2.DEF: No signal 3.DEF: Jammed component Priority when dealing with a number of faults: – DF113 Sensor supply voltage. NOTES 1.DEF 3.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF008 CONTINUED 1 CO.0 CC.1 2.DEF NOTES None. Check the connection and condition of the pedal potentiometer connector, component number 921. Check the connection and condition of the injection computer connector, component code 120.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF008 CONTINUED 2 Measure the resistance between connections 3LT and 3LR of the pedal potentiometer, component code 921. If the pedal potentiometer resistance is not between 720 Ω < X < 1680 Ω , replace the pedal potentiometer (see MR 388 Mechanical, 37A, Mechanical component controls, Accelerator pedal: Removal - Refitting).
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF009 PRESENT OR STORED 13B PEDAL POTENTIOMETER GANG 2 CIRCUIT CO.0: Open circuit or short circuit to earth CC.1: Short circuit on + 12 V Priority when dealing with a number of faults: – DF122 Pedal potentiometer supply voltage gang 2. NOTES CO.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF009 CONTINUED 1 Check the continuity of the following connection: ● 3LW between components 120 and 921. If the connection is faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or Technical Note 9804A (Dacia), Repairing electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF009 CONTINUED 2 Disconnect the computer connector and the pedal potentiometer connector, component code 921. Check the insulation between connections 3LU and 3LW of the injection computer connector.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF010 PRESENT OR STORED 13B EGR POSITION SENSOR CIRCUIT 1.DEF: At minimum stop 2.DEF: At maximum stop Priority when dealing with a number of faults: – DF113 Sensor supply voltage. NOTES Special notes: Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF010 CONTINUED 1 Measure the resistance of the EGR valve, component code 1460: ● with the engine stopped, the EGR valve will be closed (unless there is a fault), ● wait for the ambient temperature around the valve to stabilise (approximately 20˚C), measure the resistance between connections 3VP and 3VQ of component 1460. The resistance must be between 0.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF010 CONTINUED 2 Check the resistance of the EGR valve, component code 1460: ● with the engine stopped, the EGR valve will be closed (unless there is a fault), ● wait for the ambient temperature around the valve to stabilise (approximately 20˚C), ● measure the resistance between connections 3FB (or 3FB2) and 122B. The resistance must be between 7.54 Ω < R < 8.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF014 PRESENT OR STORED NOTES 13B VEHICLE SPEED SIGNAL CIRCUIT 1.DEF: Inconsistency 2.DEF: Signal Absent 3.DEF: Below the minimum threshold 4.DEF: The CAN test has detected at least one fault 5.DEF: Dialogue disrupted Special notes: Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2. Check the connection and condition of the speed sensor connector, component code 250.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF015 PRESENT OR STORED 13B MAIN RELAY CONTROL CIRCUIT 1.DEF: Permanent low signal 2.DEF: Permanent high signal Fault finding procedure application conditions for stored faults: Apply the fault finding procedure below if the fault is present or stored. NOTES Special notes: Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B EGR VALVE CONTROL CIRCUIT DF016 PRESENT OR STORED CO.0: Open circuit or short circuit to earth CC.1: Short circuit to +12 V CO: Open circuit CO.1: Open circuit or short circuit to +12V CC.0: Short circuit to earth 1.DEF: Detection of overheating Fault finding procedure application conditions for stored faults: The fault appears when the engine is running at idle speed.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF016 CONTINUED 1 Measure the resistance of the EGR valve, component code 1460: ● with the engine stopped, the EGR valve will be closed (unless there is a fault), ● wait for the ambient temperature around the valve to stabilise (approximately 20˚C), measure the resistance between connections 3VP and 3VQ of component 1460. The resistance must be between 0.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF016 CONTINUED 2 Measure the resistance of the EGR valve, component code 1460: – with the engine stopped, the EGR valve will be closed (unless there is a fault), – wait for the ambient temperature around the valve to stabilise (approximately 20˚C), – measure the resistance between connections 3FB (or 3FB2) and 122B of component 1460. The resistance must be between 7.5 Ω < R < 8.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B PREHEATING UNIT CONTROL CIRCUIT DF017 PRESENT NOTES CO.0: Open circuit or short circuit to earth CC.1: Short circuit to +12 V Special notes: If fault DF017 is present: starting is difficult (even impossible when cold). If CO.0 is present: the heater plugs are permanently switched on, with a risk of engine damage or even failure.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF018 PRESENT OR STORED 13B LOW SPEED FAN ASSEMBLY CONTROL CIRCUIT CO.0: Open circuit or short circuit to earth CC.1: Short circuit to +12 V Fault finding procedure application conditions for stored faults: The fault is present after attempting to start or with the engine running or when command AC154 Low speed fan unit relay is running.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF018 CONTINUED CO.0 NOTES None. Check the continuity and insulation against earth of the following connection: 3FB (only for K9K 792, 794, 796 engines) or 3FB2 (only for K9K 790 engines) or BP7 (only for K9K 718, 740 engines) between components 983 and 700.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF019 PRESENT OR STORED 13B HIGH SPEED FAN ASSEMBLY CONTROL CIRCUIT CO.0: Open circuit or short circuit to earth CC.1: Short circuit to +12 V Fault finding procedure application conditions for stored faults: The fault is present after attempting to start or with the engine running or when command AC153 High speed fan assembly relay is running.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF019 CONTINUED CO.0 NOTES None. Check the continuity and insulation from earth of the following connection: ● 3FB (only for K9K 792, 794, 796 engines) or 3FB2 (only for K9K 790 engines) or BP7 (only for K9K 718, 740 engines) between components 983 and 336.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF021 PRESENT OR STORED NOTES 13B PREHEATING WARNING LIGHT CIRCUIT CO.0: Open circuit or short circuit to earth CC.1: Short circuit to +12 V Special notes: Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2 or Symbol 2. Clear the fault and check that the warning light is working properly with command AC060 Preheating warning light.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF022 PRESENT OR STORED NOTES 13B OBD CIRCUIT WARNING LIGHT CO.0: Open circuit or short circuit to earth CC.1: Short circuit to +12 V Special notes: Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2 or Symbol 2. Clear the fault and check that the warning light is working properly with command AC155 MIL warning light.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF024 PRESENT OR STORED NOTES 13B LOW-PRESSURE ACTUATOR CONTROL CIRCUIT CO.0: Open circuit or short circuit to earth CC.1: Short circuit to +12 V Special notes: If fault DF024 is present with a CO.0 or a CC.1: the fuel flow actuator fully opens, the engine rattles and stops immediately to prevent racing, and the level 2 warning light illuminates.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF025 PRESENT OR STORED NOTES 13B PRE-POSTHEATING UNIT DIAGNOSTIC LINE CO: Open circuit Special notes: Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2. Check fuse F1 (70 A) of the preheating unit power supply, component code 257 in the engine compartment (see MR 388 Mechanical, 81C, Fuses, Fuses: List and location of components).
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF026 PRESENT OR STORED 13B CYLINDER 1 INJECTOR CIRCUIT CONTROL CO: Open circuit CC: Short circuit 1.DEF: At minimum stop 2.DEF: At maximum stop Fault finding procedure application conditions for stored faults: The fault is present with the engine idling.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF026 CONTINUED Injector 1 is not faulty; fault on injector 1 control circuit. YES Check the continuity, insulation, and absence of interference resistance of the following connections: ● 3L between components 120 and 193, ● 3KW between components 120 and 193.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF027 PRESENT OR STORED 13B CYLINDER 2 INJECTOR CIRCUIT CONTROL CO: Open circuit CC: Short circuit 1.DEF: At minimum stop 2.DEF: At maximum stop Fault finding procedure application conditions for stored faults: The fault is present with the engine idling.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF027 CONTINUED Injector 2 is not faulty. The fault is in the injector 2 control circuit. YES Check the continuity, insulation, and absence of interference resistance of the following connections: ● 3LA between components 120 and 194, ● 3KX between components 120 and 194.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF028 PRESENT OR STORED 13B CYLINDER 3 INJECTOR CIRCUIT CONTROL CO: Open circuit CC: Short circuit 1.DEF: At minimum stop 2.DEF: At maximum stop Fault finding procedure application conditions for stored faults: The fault is present with the engine idling.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF028 CONTINUED Injector 3 is not faulty. The fault is in the injector 3 control circuit. YES Check the continuity, insulation, and absence of interference resistance of the following connections: ● 3LB between components 120 and 195, ● 3KY between components 120 and 195.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF029 PRESENT OR STORED 13B CYLINDER 4 INJECTOR CIRCUIT CONTROL CO: Open circuit CC: Short circuit 1.DEF: At minimum stop 2.DEF: At maximum stop Fault finding procedure application conditions for stored faults: The fault is present with the engine idling.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF029 CONTINUED Injector 4 is not faulty. The fault is in the injector 4 control circuit. YES Check the continuity, insulation, and absence of interference resistance of the following connections: ● 3LC between components 120 and 196, ● 3KZ between components 120 and 196.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF032 PRESENT OR STORED NOTES 13B THERMOPLUNGER 1 RELAY CONTROL CIRCUIT CC.1: Short circuit to +12 V CO.0: Open circuit or short circuit to earth Special notes: Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2. Check the connection and condition of the additional heater 1 relay connector, component code 1067.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF033 PRESENT OR STORED NOTES 13B THERMOPLUNGER 2 RELAY CONTROL CIRCUIT CC.1: Short circuit to +12 V CO.0: Open circuit or short circuit to earth Special notes: Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2. Check the connection and condition of the additional heater 2 relay connector, component code 1068.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF034 PRESENT OR STORED NOTES 13B THERMOPLUNGER 3 RELAY CONTROL CIRCUIT CC.1: Short circuit to +12 V CO.0: Open circuit or short circuit to earth Special notes: Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2. Check the connection and condition of the additional heater 3 relay connector.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF037 PRESENT OR STORED 13B ENGINE IMMOBILISER Stored fault diagnostic application conditions: The fault is present after the ignition is switched on. NOTES Special notes: Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2. Check the connection and condition of the injection computer connector, component code 120.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B COMPUTER DF038 PRESENT OR STORED NOTES 1.DEF: 2.DEF: 3.DEF: 4.DEF: 5.DEF: 6.DEF: 7.DEF: 8.
DCM 1.2 injection Program No.: 4C Vdiag No.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF039 PRESENT OR STORED 13B INLET AIR TEMPERATURE SENSOR CIRCUIT CO.1: CC.0: Open circuit or short circuit to +12V Short circuit to earth Priority when dealing with a number of faults: – DF113 Sensor supply voltage. NOTES Special notes: Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF047 PRESENT OR STORED 13B COMPUTER SUPPLY VOLTAGE 1.DEF: Above the maximum threshold 2.DEF: Below the minimum threshold Fault finding procedure application conditions for stored faults: The fault is present with the engine running at over 1000 rpm. NOTES Special notes: Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF047 CONTINUED Check the connection and condition of the injection computer, component code 120. If the connector(s) are faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or Technical Note 9804A (Dacia), Repairing electrical wiring, Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF049 PRESENT OR STORED 13B REFRIGERANT SENSOR CIRCUIT CO.1: CC.0: Open circuit or short circuit to +12 V Short circuit to earth Fault finding procedure application conditions for stored faults: Apply the fault finding procedure below if the fault is present or stored. NOTES Priority when dealing with a number of faults: – DF113 Sensor supply voltage.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF049 CONTINUED Check for +5 V on connection 38Y of the refrigerant pressure sensor connector, component code 1202. Check for earth on connection 38U of the refrigerant pressure sensor connector, component code 1202.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF050 PRESENT OR STORED 13B BRAKE SWITCH CIRCUIT CO.0: Open circuit or short circuit to earth 1.DEF: No signal Special notes: The fault is declared present when decelerating, when the brake pedal is depressed. Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF052 PRESENT OR STORED NOTES 13B INJECTORS CONTROL CIRCUIT CC.1: CC.0: Short circuit to +12 V Short circuit to earth Priority in the event of a number of faults: If there is a combination of faults DF052, – DF026 Cylinder 1 injector circuit control, – DF027 Cylinder 2 injector circuit control, – DF028 Cylinder 3 injector circuit control, and – DF029 Cylinder 4 injector circuit control.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF052 CONTINUED The injectors are not defective.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B RAIL PRESSURE REGULATION FUNCTION DF053 PRESENT OR STORED 1.DEF: 2.DEF: 3.DEF: 4.DEF: 5.DEF: 6.DEF: 7.DEF: 8.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF053 CONTINUED 1 Check for +12 V (after relay) on connection 3FB (or 3FB2) of the fuel flow actuator connector, component code 1105. If the connection is faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or Technical Note 9804A (Dacia), Repairing electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF053 CONTINUED 2 1.DEF 2.DEF 3.DEF 5.DEF 7.DEF NOTES None. Check the presence and conformity of the fuel in the tank. Run test 13 Diesel fuel conformity check. Run test 1 Low pressure circuit check. Run test 6 High pressure system check. Run test 8 Injector return flow AFTER REPAIR MR-453-X79-13B000$072.mif V1 Deal with any faults declared by the diagnostic tool. Clear the computer memory.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF056 PRESENT OR STORED 13B AIR FLOW SENSOR CIRCUIT 1.DEF: 2.DEF: 3.DEF: 4.DEF: Permanent low level Permanent high level At maximum stop At minimum stop Priority in the event of a number of faults: – DF089 Inlet manifold pressure sensor circuit. NOTES Special notes: If fault DF056 is present: air flow regulation stops and the EGR valve is closed.
DCM 1.2 injection Program No.: 4C Vdiag No.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF057 PRESENT OR STORED NOTES 13B WATER IN DIESEL FUEL DETECTOR CIRCUIT CO.1: Open circuit or short circuit to +12 V CC.0: Short circuit to earth 1.DEF: Above the maximum threshold Special note: If fault DF057 is present, the level 1 warning light is illuminated. Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2. Check for water in the diesel filter.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B COMBUSTION MISFIRES ON CYLINDER 1 DF059 PRESENT OR STORED Special notes: If fault DF059 is present, the engine speed is maintained at 1000 rpm, the engine performance is reduced to 75%, and the level 2 warning light illuminates. NOTES Fault finding procedure application conditions for stored faults: The fault is present with the engine idling.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B MISFIRING ON CYLINDER 2 DF060 PRESENT OR STORED Special notes: If fault DF060 is present, the engine speed is maintained at 1000 rpm, the engine performance is reduced to 75%, and the level 2 warning light illuminates. NOTES Fault finding procedure application conditions for stored faults: The fault is present with the engine idling.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B MISFIRING ON CYLINDER 3 DF061 PRESENT OR STORED Special notes: If fault DF061 is present, the engine speed is maintained at 1000 rpm, the engine performance is reduced to 75%, and the level 2 warning light illuminates. NOTES Fault finding procedure application conditions for stored faults: The fault is present with the engine idling.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B MISFIRING ON CYLINDER 4 DF062 PRESENT OR STORED Special notes: If fault DF062 is present, the engine speed is maintained at 1000 rpm, the engine performance is reduced to 75%, and the level 2 warning light illuminates. NOTES Fault finding procedure application conditions for stored faults: The fault is present with the engine idling.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B INLET MANIFOLD PRESSURE SENSOR CIRCUIT DF089 PRESENT OR STORED 1.DEF: 2.DEF: 3.DEF: 4.DEF: 5.DEF: 6.DEF: 7.DEF: Permanent low level Permanent high level Below the minimum threshold Above the maximum threshold Inconsistency At maximum stop At minimum stop Priority when dealing with a number of faults: – DF113 Sensor supply voltage.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF089 CONTINUED Check the insulation, continuity and the absence of interference resistance on the following connections: ● 3LQ between components 120 and 1071, ● 3LP between components 120 and 1071, ● 3LN between components 120 and 1071.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF098 PRESENT OR STORED NOTES 13B FUEL TEMPERATURE SENSOR CIRCUIT CO.1: CC.0: Open circuit or short circuit to +12 V Short circuit to earth Special notes: Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2. Check the connection and condition of the fuel temperature sensor connector, component code 1066.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF107 PRESENT OR STORED 13B COMPUTER MEMORY 1.DEF: Enter EEPROM memory 2.DEF: Read EEPROM memory Fault finding procedure application conditions for stored faults: The fault is considered present when the engine is running. NOTES Special note: If fault DF107 is present, the engine stops, restarting is impossible, and the level 2 warning light illuminates.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF112 PRESENT OR STORED 13B CYLINDER REFERENCE SENSOR CIRCUIT 1.DEF: No signal Fault finding procedure application conditions for stored faults: The fault is present when the starter motor is operating or the engine is running at idle speed. NOTES Special note: Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF113 PRESENT OR STORED NOTES 13B SENSOR SUPPLY VOLTAGE 1.DEF: At minimum stop 2.DEF: At maximum stop Special notes: If fault DF113 is present: the engine stops immediately and restarting is impossible. The Level 2 warning light illuminates. Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2.
DCM 1.2 injection Program No.: 4C Vdiag No.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF114 PRESENT OR STORED 13B EGR SOLENOID VALVE CIRCUIT 1.DEF: 2.DEF: 3.DEF: 4.DEF: 5.DEF: At minimum stop At maximum stop Inconsistency Valve jammed Valve clogged Fault finding procedure application conditions for stored faults: The fault is considered present when the engine is running. NOTES Special notes: If fault DF114 is present, unstable engine speed and even stalling.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF114 CONTINUED 1 Check for +5 V on connection 3GC of component 1460. If the connection is faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or Technical Note 9804A (Dacia), Repairing electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF114 CONTINUED 2 Check for +12 V on connection 3GC of component 1460. If the connection is faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or Technical Note 9804A (Dacia), Repairing electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF121 PRESENT OR STORED 13B ACCELEROMETER CIRCUIT 1.DEF: No signal Priorities when dealing with a number of faults: – DF001 Coolant temperature sensor circuit, – DF002 Air temperature sensor circuit, – DF003 Atmospheric pressure sensor circuit, – DF098 Fuel temperature sensor circuit, A fault on one of these sensors could lead to incorrect fault finding on the accelerometer.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF121 CONTINUED Ensure that C2I is entered correctly in the injection computer. Check that the accelerometer is secured on the engine. Disconnect and reconnect the accelerometer sensor to accomplish fast programming. Carry out a road test followed by another check with the diagnostic tool.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF122 PRESENT OR STORED NOTES 13B PEDAL POTENTIOMETER GANG 2 SUPPLY VOLTAGE CO.1: CC.0: Open circuit or short circuit to +12V Short circuit to earth Special notes: If fault DF122 is present: the engine stops immediately and restarting is impossible. The Level 2 warning light illuminates. Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF130 PRESENT OR STORED 13B FLOW CAPACITY FUNCTION 1.DEF: High flow capacity < minimum 2.DEF: High flow capacity > maximum Special notes: If fault DF130 is present, the engine may stop with the level 2 warning light illuminating. NOTES Fault finding procedure application conditions for stored faults: The fault is considered present when the engine is running.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF159 PRESENT OR STORED NOTES 13B POWER ASSISTED STEERING RELAY CONTROL CIRCUIT CO.0: open circuit or short-circuit to earth CC.1: Short circuit at + 12 V Special notes: This fault is active if the vehicle is fitted with electric power-assisted steering.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF162 PRESENT OR STORED NOTES 13B OVERHEATING INDICATOR LIGHT CO.0: open circuit or short-circuit to earth CC.1: Short circuit at + 12 V Special notes: Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2 or Symbol 2. Clear the fault and check that the warning light is working properly with command AC061 Overheating warning light.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF195 PRESENT OR STORED 13B ENGINE SPEED/CAMSHAFT SENSOR CONSISTENCY Stored fault diagnostic application conditions: The fault becomes present after clearing the fault from the memory or after an attempt to start the engine or with the engine running. NOTES Special notes: Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF209 PRESENT OR STORED 13B EGR VALVE POSITION SENSOR CIRCUIT CO.0: Open circuit or short circuit to earth CC.1: Short circuit to +12 V Priority when dealing with a number of faults: – DF113 Sensor supply voltage, deal first with fault DF113. NOTES Special notes: Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF218 PRESENT OR STORED 13B MICROCONTROLLER 1.DEF: RAM memory defect 2.DEF: Memory self-test Fault finding procedure application conditions for stored faults: The fault is declared present with the engine running. NOTES Special note: If fault DF218 is present, the engine stops, restarting is impossible, and the level 2 warning light illuminates.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF221 PRESENT OR STORED NOTES 13B CLUTCH CONTACT SIGNAL 1.DEF: Inconsistency None. Check the connection and condition of the clutch pedal switch connector, component code 675. Check the connection and condition of the injection computer connector, component code 120.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF236 PRESENT OR STORED NOTES 13B SERIOUS INJECTION FAULT WARNING LIGHT CIRCUIT CO.0: CC.1: Open circuit or short circuit to earth Short circuit to +12 V Special notes: Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2 or Symbol 2. Clear the fault and check that the warning light is working properly with command AC068 Injection fault warning light.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF242 PRESENT OR STORED 13B ENGINE SPEED SIGNAL OUTPUT CC.1: CO.0: Short circuit to +12 V Open circuit or short circuit to earth Priority when dealing with a number of faults: – DF113 Sensor supply voltage, deal first with fault DF113. NOTES Special notes: Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF261 PRESENT OR STORED NOTES 13B TURBOCHARGER ACTUATOR CIRCUIT CC.1: CO.0: Short circuit to +12 V Open circuit or short circuit to earth Special notes: If fault DF261 is present: the air flow regulation is switched off, the EGR valve is closed, and the turbocharging regulation is switched off. Injection defective message displayed on the instrument panel and reduced performance.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF427 PRESENT OR STORED NOTES 13B TURBO ACTUATOR CONTROL 1.DEF: At minimum stop 2.DEF: At maximum stop Special notes: If fault DF427 is present, the air flow regulation is switched off, the EGR valve is closed, the turbocharging regulation is switched off and the performance is reduced. Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF433 PRESENT OR STORED NOTES 13B FUEL CONSUMPTION SIGNAL (ADAC) CC.1: CO.0: Short circuit to +12 V Open circuit or short circuit to earth None. Check the connection and condition of the instrument panel connector, component code 247. Check the connection and condition of the engine management computer connector, component code 120.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF489 PRESENT OR STORED 13B AIR CONDITIONING COMPRESSOR CONTROL CO.0: CC.1: Open circuit or short circuit to earth Short circuit to +12 V Conditions for applying fault finding procedures to stored faults The fault is present after starting the engine and switching on the air conditioning or running command AC180 Air conditioning compressor relay control.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF532 PRESENT OR STORED 13B ALTERNATOR CHARGE SIGNAL 1.DEF: Inconsistency 2.DEF: No signal Conditions for applying the fault finding procedure to stored faults: If the fault is present after the engine is started. NOTES Special notes: Use bornier Elé. 1681 for any operations on the injection computer connectors. Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF631 PRESENT OR STORED 13B BRAKE LIGHT SWITCH SIGNAL 1.DEF: No signal 2.DEF: Inconsistency Special notes: The fault is declared present when decelerating, when the brake pedal is depressed. NOTES Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF859 PRESENT OR STORED 13B INJECTOR PROGRAMMING CYCLE NOT DONE Fault finding procedure application conditions for stored faults: The fault is declared present with the engine running. NOTES Priority in the event of a number of faults: – Deal with all the other faults before fault DF859 Special notes: This fault is activated when the injectors have not been reset for 1800 miles (3000 km).
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF886 PRESENT OR STORED 13B PRESENCE OF WATER IN THE DIESEL FUEL 1.DEF: Open circuit on the line or presence of water in the diesel fuel Fault finding procedure application conditions: The fault is declared present after the engine has been started.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation 13B DF886 CONTINUED A) Make sure the water detection sensor is properly connected. – If not, clear the fault, – Carry out a road test (speed > 12 mph (20 km/h) and engine speed > 1200 rpm) for more than 30 seconds. – If the fault does not recur, end of fault finding procedure. – If the fault recurs, go to step B.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault Interpretation DF1083 PRESENT OR STORED NOTES 13B WATER IN DIESEL FUEL WARNING LIGHT CIRCUIT CC.1: CO.0: Short circuit to +12 V Open circuit or short circuit to earth Special notes: Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2 or Symbol 2. Clear the fault and check that the warning light is working properly with command AC261 Water in fuel warning light.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Conformity check Only perform this conformity check after a complete check with the diagnostic tool. The values indicated in this conformity check are given as examples. Application condition: With the engine idling, warm engine, coolant temperature > 80˚C.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Conformity check Only perform this conformity check after a complete check with the diagnostic tool. The values indicated in this conformity check are given as examples. Application condition: With the engine idling, warm engine, coolant temperature > 80˚C. NOTES STATUS CHECK (CONTINUED 1) Function Air conditioning EGR Preheating MR-453-X79-13B000$080.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Conformity check 13B Only perform this conformity check after a complete check with the diagnostic tool. The values indicated in this conformity check are given as examples. Application condition: With the engine idling, warm engine, coolant temperature > 80˚C. NOTES STATUS CHECK (CONTINUED 2) Parameter or status checked or action Function ET122: Clutch pedal ET233: MR-453-X79-13B000$080.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Conformity check 13B Only perform this conformity check after a complete check with the diagnostic tool. The values indicated in this conformity check are given as examples. Application condition: With the engine idling, warm engine, coolant temperature > 80˚C. NOTES PARAMETER CHECK Function Idle speed regulation Accelerator pedal Coolant temperature Vehicle speed Air temperature MR-453-X79-13B000$080.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Conformity check Only perform this conformity check after a complete check with the diagnostic tool. The values indicated in this conformity check are given as examples. Application condition: With the engine idling, warm engine, coolant temperature > 80˚C.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Conformity check NOTES Only perform this conformity check after a complete check with the diagnostic tool. The values indicated in this conformity check are given as examples. Application condition: With the engine idling, warm engine, coolant temperature > 80˚C.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Conformity check 13B Only perform this conformity check after a complete check with the diagnostic tool. The values indicated in this conformity check are given as examples. Application condition: With the engine idling, warm engine, coolant temperature > 80˚C.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Status summary table Tool Status Diagnostic tool title ET003 Immobiliser ET007 Preheating unit control ET008 EGR solenoid valve control ET023 Fast idle speed request ET038 Engine ET039 Brake pedal ET116 Air conditioning authorisation ET122 Brake switch no. 1 signal ET123 Brake switch no.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Interpretation of statuses 13B BRAKE CONTACT SIGNAL No. 1 ET122 NOTES Special notes: Carry out the checks only if the INACTIVE and ACTIVE statuses are not consistent with the pedal position. Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2. INACTIVE STATUS Brake pedal depressed.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Interpretation of statuses 13B ET122 CONTINUED ACTIVE STATUS Brake pedal released. – Check the condition and the mounting of the brake light switch, the brake lights fuse and the conformity of the bulbs.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Interpretation of statuses CLUTCH PEDAL ET233 NOTES Special notes: Carry out the checks only if the RELEASED and DEPRESSED statuses are not consistent with the pedal position. Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2. Only for K9K 718, 740 engines "RELEASED" STATUS and clutch pedal depressed. Check the condition and the fitting of the clutch switch, component code 675.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Interpretation of statuses ET233 CONTINUED DEPRESSED STATUS and clutch pedal released. Check the condition and fitting of the clutch switch.
DCM 1.2 injection Program No.: 4C Vdiag No.
DCM 1.2 injection Program No.: 4C Vdiag No.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Interpretation of parameters 13B AIR TEMPERATURE PR058 NOTES Special notes: This circuit is not present on vehicles equipped with K9K 790 and 794 engines. Only apply the checks if the parameter is inconsistent. Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2. Check the condition of the air flowmeter connections, component code 799.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Interpretation of parameters 13B COOLANT TEMPERATURE PR064 NOTES Special notes: Only apply the checks if the parameter is inconsistent. Use the Technical Note wiring diagram, Logan, Sandero, Thalia 2, or Symbol 2. Check the condition of the coolant temperature sensor connections, component code 244.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Command summary table Tool command Diagnostic tool title 13B Comments RZ001 Fault memory This command is used for clearing the computer's stored faults RZ002 EGR programming adaptives Use this command when replacing the EGR valve RZ004 Pressure regulation adaptives Use this command when simultaneously replacing the four injectors and after replacing/retightening the accelerometer.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Command summary table Tool command 13B Diagnostic tool title Comments AC029 High pressure circuit sealing test. Activating this will request the injection system to detect a leak on the high pressure circuit after an operation has been carried out. This is activated with the engine warm and running and consists of unladen acceleration repeated 4 times.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Command summary table Tool command Diagnostic tool title 13B Comments AC251 Heating resistor 2 relay. Activating this actuates the heating resistor no. 2 relay to test the heating resistor supply. AC252 Heating resistor 3 relay. Activating this actuates the heating resistor no. 3 relay to test the heating resistor supply.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Customer complaints NOTES 13B Only consult this customer complaint after a complete check with the diagnostic tool. No dialogue with the computer ALP1 Starting fault: The engine will not start ALP2 The engine starts with difficulty, or starts then stalls ALP3 Starting difficult with Warm engine ALP4 Rough idling speed (pumping) ALP5 Idling speed too high or too low ALP6 MR-453-X79-13B000$140.
DCM 1.2 injection Program No.: 4C Vdiag No.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart 13B ALP1 No dialogue with the computer NOTES Only consult this customer complaint after a complete check with the diagnostic tool. Try to establish dialogue with a computer on another vehicle to check that the diagnostic tool is not faulty.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart 13B ALP1 CONTINUED A Ensure that the diagnostic socket, component code 225, has properly power supply: ● + Before ignition feed on connection BP56 of component 225. ● + After ignition feed on connection AP10 of component 225. ● Earth on connections MAM and NC of component 225.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Fault finding chart ALP2 NOTES The engine will not start Only address this customer complaint after a complete check with the diagnostic tool. Check that the fuel tank is correctly filled and that the appropriate fuel is used. Run test 13 Diesel fuel conformity check. Check the levels of engine oil and coolant. Check the inlet air circuit, use TEST 5 Inlet circuit check.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Fault finding chart ALP2 CONTINUED 1 A Is the timing set correctly? NO Carry out the necessary repairs. NO Carry out the necessary repairs. NO Carry out the necessary repairs. YES Visually check the condition of the engine wiring harness.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart 13B ALP2 CONTINUED 2 B Check the low pressure circuit, use TEST 1 Low pressure circuit check. Check the injectors, use TEST 3 Injector check. Visually check that there are no leaks on the high pressure circuit, use TEST 7 High pressure circuit sealing check. Check the high pressure system, use TEST 6 High pressure system check.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart ALP3 NOTES 13B The engine starts with difficulty, or starts then stalls Only address this customer complaint after a complete check with the diagnostic tool. Check that the fuel tank is correctly filled and that the appropriate fuel is used. Run test 13 Diesel fuel conformity check. Check the levels of engine oil and coolant. Check the inlet air circuit, use TEST 5 Inlet circuit check.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart 13B ALP3 CONTINUED 1 A Is the timing set correctly? NO Carry out the necessary repairs. NO Carry out the necessary repairs. YES Is the compression in order? YES Visually check the condition of the engine wiring harness. Check the electric circuit, use TEST 2 Electrical circuit check. Using the diagnostic tool, check that the injector codes (C2I) are correctly entered on the identification screen.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart 13B ALP3 CONTINUED 2 B Check the low pressure circuit, use TEST 1 Low pressure circuit check. Visually check that there are no leaks on the high pressure circuit, use TEST 7 High pressure circuit sealing check. Check the high pressure system, use TEST 6 High pressure system check. Check the condition of the computer connections (bent pins, traces of oxidation, presence of silicone, etc.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart ALP4 NOTES 13B Starting difficult with warm engine Only address this customer complaint after a complete check with the diagnostic tool. Check that the tank is filled correctly. Check the inlet air circuit, use TEST 5 Inlet circuit check. Is the compression in order? NO Carry out the necessary repairs.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart 13B ALP4 CONTINUED A Control the injectors using commands: – AC005: Cylinder 1 injection, – AC006: Cylinder 2 injection, – AC007: Cylinder 3 injection, – AC008: Cylinder 4 injection. Can you hear the valve moving 1 metre from the vehicle? NO Run TEST 9 Diesel filter check.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart ALP5 NOTES 13B Rough idling speed (pumping) Only address this customer complaint after a complete check with the diagnostic tool. Check that the tank is correctly filled and that the appropriate fuel is used. Run test 13 Diesel fuel conformity check. Check the low pressure circuit, use TEST 1 Low pressure circuit check.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart 13B ALP5 CONTINUED A Is the compression in order? NO Carry out the necessary repairs. YES Check the electrical conformity of the heater plugs (the resistance of the heater plug must be less than 2 Ω). Check the high pressure system, use TEST 6 High pressure system check. Contact the Techline if the customer complaint is still present. AFTER REPAIR MR-453-X79-13B000$150.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart ALP6 NOTES 13B Idling speed too high or too low Only address this customer complaint after a complete check with the diagnostic tool. Using the diagnostic tool, check that the injector codes (C2I) are correctly entered on the identification screen. If not, configure the correct injector codes using command SC002 Enter injector codes Check the electric circuit, use TEST 2 Electrical circuit check.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart ALP7 NOTES 13B Erratic acceleration/deceleration and engine racing Only address this customer complaint after a complete check with the diagnostic tool. Check that the engine has not sucked up its oil (engine racing). Check the inlet air circuit, use TEST 5 Inlet circuit check. Using the diagnostic tool, check that the injector codes (C2I) are correctly entered on the identification screen.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart ALP8 NOTES 13B Acceleration gap Only address this customer complaint after a complete check with the diagnostic tool. Check the inlet air circuit, use TEST 5 Inlet circuit check. Is the compression in order? NO Carry out the necessary repairs. YES Using the diagnostic tool, check that the injector codes (C2I) are correctly entered on the identification screen.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart 13B ALP8 CONTINUED A Visually check that there are no leaks on the high pressure circuit, use TEST 7 High pressure circuit sealing check. Check the injectors, use TEST 3 Injector check. Check the condition of the computer connections (bent pins, traces of oxidation, presence of silicone, etc.) and check that the computer connectors are properly locked.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart ALP9 NOTES 13B Engine cut-out (stalling) Only address this customer complaint after a complete check with the diagnostic tool. Check that the fuel tank is correctly filled and that the appropriate fuel is used. Run test 13 Diesel fuel conformity check. Check the levels of engine oil and coolant. Check that the engine has not sucked up its oil (engine racing).
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart 13B ALP9 CONTINUED A Check the electric circuit, use TEST 2 Electrical circuit check. Using the diagnostic tool, check that the injector codes (C2I) are correctly entered on the identification screen. If not, configure the correct injector codes using command SC002 Enter injector codes Check the low pressure circuit, use TEST 1 Low pressure circuit check.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart 13B ALP10 Engine bucking NOTES Special note: Only consult this customer complaint after a complete check using the diagnostic tool (see System operation, Function: Fuel supply management (timing, flow rate, and pressure), flow capacity function (VLC) section). Check that the fuel tank is filled and that the appropriate fuel is used. Run TEST 13 Diesel fuel conformity check.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Fault finding chart ALP10 CONTINUED A Is status ET563 Flow capacity function ACTIVE? YES The vehicle has entered the Flow capacity function program. This function is activated more easily when: the external temperature is high, the fuel level in the tank is at 1/4, the vehicle is laden and when the speed is high.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Fault finding chart ALP11 Loss of power Special note: Only address this customer complaint after a complete check with the diagnostic tool. See explanation for flow capacity function in system operation. NOTES Is status ET563 Flow capacity function ACTIVE? NO YES Check the diesel filter. Using the diagnostic tool, check that the injector codes (C2I) are correctly entered on the identification screen.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Fault finding chart ALP11 CONTINUED A Is the catalytic converter clogged or damaged? YES Replace the catalytic converter (see MR 388, Mechanical, 19B, Exhaust, Catalytic converter: Removal - Refitting). NO Check that the turbocharger is working correctly. Run TEST 11 Air line at the turbocharger. Run TEST 10 Turbocharger solenoid valve check. Run TEST 12 Turbocharger.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart ALP 12 NOTES 13B Too much power Only address this customer complaint after a complete check with the diagnostic tool. In this case, the control solenoid valve is jammed: it is possible to increase the vacuum but not reduce it afterwards. Using the diagnostic tool, check that the injector codes (C2I) are correctly entered on the identification screen.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Fault finding chart ALP 12 CONTINUED 1 In this case, it may be the solenoid valve dynamic specification which is at fault (atmospheric pressure resetting time). Final fault finding is carried out by measuring this specification on a special bench.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Fault finding chart ALP 12 CONTINUED 2 A Is the turbocharger control operating? YES NO Replace the solenoid valve. Carry out the necessary repairs. If the fault is still present, contact the Techline. AFTER REPAIR MR-453-X79-13B000$150.mif V1 Carry out a road test followed by a check with the diagnostic tool.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart ALP 13 NOTES 13B Excessive consumption Only address this customer complaint after a complete check with the diagnostic tool. Check that the fuel tank is correctly filled and that the appropriate fuel is used. Run TEST 13 Diesel fuel conformity check. Check the levels of engine oil and coolant.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart 13B ALP 13 CONTINUED A Is the compression in order? NO Carry out the necessary repairs. YES Is the catalytic converter clogged or damaged? YES Replace the catalytic converter (see MR 388, Mechanical, 19B, Exhaust, Catalytic converter: Removal Refitting). NO Check that the turbocharger is working correctly. Run TEST 11 Air line at the turbocharger.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Fault finding chart ALP 14 NOTES Overspeed when releasing accelerator or changing gear Only address this customer complaint after a complete check with the diagnostic tool. Check that there are no obstacles that might impede the accelerator pedal travel (carpet, hard point, etc.). Using the diagnostic tool, check that the injector codes (C2I) are correctly entered on the identification screen.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart 13B ALP 14 CONTINUED A Check the injectors, use TEST 3 Injector check. Check the condition of the computer connections (bent pins, traces of oxidation, presence of silicone, etc.) and check that the computer connectors are properly locked. Contact the Techline if the customer complaint is still present. AFTER REPAIR MR-453-X79-13B000$150.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart ALP 15 NOTES 13B Engine dies on pulling away Only address this customer complaint after a complete check with the diagnostic tool. Is the clutch clearance set correctly? NO Carry out the necessary repairs. YES Using the diagnostic tool, check that the injector codes (C2I) are correctly entered on the identification screen.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart ALP 16 NOTES 13B Engine rattling, noisy engine, turbocharger noise Only address this customer complaint after a complete check with the diagnostic tool. If the noise arises from the turbocharger, apply Technical Note 5164A, Noise fault finding. Note: Pay close attention to faulty components that might result in unjustified replacement of the turbocharger.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart 13B ALP 16 CONTINUED A Using the diagnostic tool, check that the injector codes (C2I) are correctly entered on the identification screen. If not, configure the correct injector codes using command SC002 Enter injector codes Check the inlet air circuit, use TEST 5 Inlet circuit check. Check the low pressure circuit, use TEST 1 Low pressure circuit check. Check the injectors, use TEST 3 Injector check.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart ALP 17 NOTES 13B Blue, white or black smoke Only address this customer complaint after a complete check with the diagnostic tool. Check that the fuel tank is correctly filled and that the appropriate fuel is used. Run TEST 13 Diesel fuel conformity check. Check the levels of engine oil and coolant.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart 13B ALP 17 CONTINUED A Using the diagnostic tool, check that the injector codes (C2I) are correctly entered on the identification screen. If not, configure the correct injector codes using command SC002 Enter injector codes Check the low pressure circuit, use TEST 1 Low pressure circuit check. Check the injectors, use TEST 3 Injector check.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Fault finding chart ALP 18 NOTES 13B Smoke (black, white, or blue) when accelerating. Only address this customer complaint after a complete check with the diagnostic tool. Check that the fuel tank is correctly filled and that the appropriate fuel is used. Run TEST 13 Diesel fuel conformity check. Check the levels of engine oil and coolant. Check that the engine has not sucked up its oil (engine racing).
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Fault finding chart ALP 18 CONTINUED A Check that the turbocharger is working correctly. Run TEST 11 Air line at the turbocharger. Run TEST 10 Turbocharger solenoid valve check. Run TEST 12 Turbocharger. Is the turbocharger correct? NO Carry out the necessary repairs. YES Visually check the condition of the engine wiring harness.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Tests NOTES 13B Only consult these tests when applying a fault finding chart (ALP) or Interpretation of faults. Some specific checks are grouped together into tests and are performed as required in the various fault finding charts or when interpreting faults.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Tests TEST 1 Low pressure circuit check Check the conformity of the low pressure circuit connections. Are the low pressure circuit connections in order? NO Carry out the necessary repairs. YES Carry out the necessary repairs. YES Check the condition of the priming bulb, and that it is working properly. Look for leaks on the unions.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Tests TEST 2 13B Electrical circuit check Check the battery charge, and that the alternator is working properly (see Technical Note 6014A (Renault) or Technical Note 9859A (Dacia), Charging circuit check).
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Tests TEST 3 13B Injector check Visually inspect around the injectors. Is there diesel fuel around the injectors? YES Locate the source of the leak and carry out the necessary repairs. NO Check the insulation and the continuity of the electric circuit. Run TEST 9 Diesel filter check.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Tests TEST 5 13B Inlet circuit check Check for a leak or an air intake. Is there a leak or air intake? YES Carry out the necessary repairs NO Replace the air filter (see MR 388, Mechanical, 12A, Fuel mixture, Air filter, Removal - Refitting). YES Clean the inlet manifold. NO Check the condition of the air filter. Is the air filter in order? YES Check that the inlet manifold is not obstructed (clogged).
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Tests TEST 6 NOTES High pressure system check Special note: Certain faults make it impossible to carry out this test - deal with these first. IMPORTANT Running the starter motor for more than 5 seconds does not serve any purpose and can be dangerous. Preliminary checks: – Check the presence of fuel. – Check that there is no air in the low pressure circuit. Run TEST 1: Low pressure circuit check.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Tests TEST 6 CONTINUED A B – Switch off the ignition, reconnect the electrical connections to the four injectors and the low pressure actuator. – Switch on the ignition again, and clear the injection faults using the diagnostic tool. – Check for fuel leaks on the high pressure circuit. Run TEST 7: High pressure circuit sealing check. – Check the conformity of the diesel filter. Run TEST 9 Diesel filter check.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Tests TEST 7 NOTES 13B High pressure circuit sealing check Special note: Certain faults make it impossible to carry out this test - deal with these first. The command AC029 High pressure circuit sealing test enables a high pressure circuit sealing test to be carried out when the engine is running. This command can locate a leak in the high pressure circuit if a union is incorrectly fitted or screwed on.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Tests TEST 8 NOTES Injector return flow Special note: Certain faults make it impossible to carry out this test - deal with these first. Does the engine start? NO A YES Command AC029 High pressure circuit sealing also checks the return volume of each injector to detect any leaks inside the injectors.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Tests 13B TEST 8 CONTINUED 1 When all the preparations are complete, start the engine and leave it running: For 30 seconds at idle speed For 2 minutes at idle speed for euro 4 K9K 718 - 740 - 792 - 796 engines. for euro 3 K9K 790 - 794 engines. Note: It is essential to comply with these time periods for the correct interpretation of the test results. – Run command AC029 High pressure circuit sealing check.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Tests 13B TEST 8 CONTINUED 2 At the end of the idling phase and the two cycles, the return volume for each injector should be: 45 ml (maximum) for euro 4 K9K 718 - 740 - 792 - 796 engines. 35 ml (maximum). for euro 3 K9K 790 - 794 engines.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Tests 13B TEST 8 CONTINUED 3 A If the engine does not start, only the static leakage can be measured, i.e. the leakage with the injector closed, not actuated and under high pressure. Make sure that the ignition circuit is working correctly (minimum engine speed 200 rpm). Tooling required – Mot. 1711 Injector flow measuring kit.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Tests 13B TEST 8 CONTINUED 4 Carry out the following test to confirm the repair: – With the ignition off, disconnect the low pressure actuator from the pump (brown IMV connector) and connect the test adapter (test IMV, Mot.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Tests TEST 9 Diesel filter check Check the conformity of the diesel filter. Is the diesel filter in order? NO Replace the filter with an original part (see MR 388, Mechanical, 13A, Fuel supply, Fuel filter: Removal Refitting). YES Switch off the ignition and analyse the diesel fuel in the diesel filter. – Disconnect the diesel supply and return hoses from the filter.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Tests TEST 10 Turbocharger solenoid valve check Check the vacuum at the pressure regulator inlet Run the engine at idle speed. Check the engine temperature using the CLIP parameter PR064 Coolant temperature. Let the engine warm up until the temperature reaches 80˚C. Disconnect the vacuum pipe of the end piece of the pressure regulator.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Tests TEST 10 CONTINUED 1 A Reconnect the vacuum pipe on the turbocharging pressure regulator Checking the vacuum at the solenoid valve outlet Leave the engine running at idle speed. Disconnect the vacuum pipe from the end piece of the solenoid valve outlet. This pipe connects the solenoid valve to the turbocharging pressure regulator.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Tests 13B TEST 10 CONTINUED 2 B Visual inspection of the electrical connector of the solenoid valve Switch off the engine. Note: The requested checks are only visual. 1. 2. 3. 4. 5. 6. Check that the connector is correctly connected and locked. Check the absence of damage to the electric wires where they leave the installation. Disconnect the connector to continue the checks.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Tests TEST 10 CONTINUED 3 C Checking the vacuum at the solenoid valve inlet Run the engine at idle speed. Disconnect the vacuum pipe from the end piece of the solenoid valve inlet. This pipe connects the vacuum pump to the turbocharger solenoid valve. Connect a vacuum pressure gauge to the end of the disconnected pipe and put it in the vacuum measurement position. Read the vacuum posted by the pressure gauge.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Tests TEST 11 Air line at the turbocharger Check that the air filter is present. Check the replacement interval of the air filter on the maintenance booklet. Compare the part nos. of the fitted air filter on the vehicle and of the air filter recommended by the manufacturer. Check the direction of fitting of the air filter.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Tests TEST 11 CONTINUED A High pressure circuit check Note: Depending on the vehicle type, the best visual access will be either from above or from below.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Tests TEST 12 13B Turbocharger IMPORTANT Perform these checks without removing the turbocharger and with the vehicle ignition switched off.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Tests TEST 12 CONTINUED 1 A Check the condition of the turbocharger vanes. Note: This check is facilitated by using a mirror and a lamp. Depending on the vehicle type, the best visual access will be either from above or from below. Visually check that the compressor vanes are in good condition.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Tests TEST 12 CONTINUED 2 B Checking the turbocharging pressure regulator to determine if it is a variable geometry turbocharger Note: The pressure regulator rod of a variable geometry turbocharger is orthogonal to the turbocharger shaft. Variable geometry turbochargers are controlled by a solenoid valve. Depending on the vehicle type, the best visual access will be either from above or from below.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Tests TEST 12 CONTINUED 3 C Checking the turbocharging pressure regulator to determine if it is a fixed geometry turbocharger Note: The pressure regulator rod of a fixed geometry turbocharger is aligned with the turbocharger shaft. Fixed geometry turbochargers are controlled by a solenoid valve. Depending on the vehicle type, the best visual access will be either from above or from below.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Tests TEST 12 CONTINUED 4 Deformed, twisted blade ("soft" foreign body) Broken blades ("hard" foreign body) End of TEST 12 MR-453-X79-13B000$160.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION Fault finding – Tests TEST 13 13B Check the conformity of the diesel fuel IMPORTANT During this operation, it is essential to: – refrain from smoking or bringing incandescent objects close to the work area, – protect yourself against fuel splashes due to residual pressure in the pipes, – wear glasses with side covers, – wear waterproof gloves (Nitrile type).
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Tests TEST 13 CONTINUED 1 A Weigh the diesel fuel and note the value while subtracting the empty weight of the plastic pot with its cover. Is the fuel weight within the min. and max. value of the table below? Calculated weight (g.) Fuel temperature (˚C) Min. weight: Max.
DCM 1.2 injection Program No.: 4C Vdiag No.: 08 DIESEL INJECTION 13B Fault finding – Tests TEST 13 CONTINUED 2 B C YES NO End of TEST 13 The fuel is not compliant. If the fuel weight is less than the min. terminals, it means there is petrol in the diesel fuel. If the fuel weight is greater than the max terminals, it means there is oil in the diesel fuel. Drain the fuel circuit, including the tank (see MR 388, Mechanical, 19C, Tank, Draining the fuel tank).