Specifications

F106
ON-BOARD DIAGNOSTIC
2 VERIFY RELATED SERVICE INFORMATION
AVAILABILITY
• Check for related Service Information
availability.
• Is any related Service Information available?
Yes Perform repair or diagnosis according to available Service
Information.
• If vehicle is not repaired, go to next step.
No Go to next step.
3 VERIFY RELATED PENDING AND STORED
DTCs
• Turn ignition key to OFF, then ON (Engine
OFF).
• Verify pending and stored DTCs using WDS or
equivalent.
• Is other DTC present?
Yes Go to appropriate DTC troubleshooting procedures.
No Go to next step.
4 IDENTIFY TRIGGER DTC FOR FREEZE FRAME
DATA
• Is DTC P0131 and P0132 on FREEZE FRAME
DATA?
Yes Go to next step.
No Go to troubleshooting procedures for DTC on FREEZE
FRAME DATA.
5 VERIFY CURRENT INPUT SIGNAL STATUS - IS
CONCERN INTERMITTENT OR CONSTANT
• Warm-up engine.
• Access O2S11 for P0131 and P0132 PID using
WDS or equivalent.
• Verify PID while racing engine (in PARK (ATX)
or NEUTRAL (MTX)).
• Is PID reading okay?
 More than 0.45 V when suddenly depress
accelerator pedal (rich condition)
 Less than 0.45 V just after release of
accelerator pedal (lean condition)
Yes Go to next step.
No Replace front HO2S, then go to Step 19.
6 INSPECT LONG TERM FUEL TRIM
• Access LONGFT1 for P0131 and P0132 PID
using WDS or equivalent.
• Compare it with FREEZE FRAME DATA
recorded at Step1.
• Was it decreased?
Yes Engine is driven under rich condition. Go to next step.
No Engine is driven under lean condition. Go to step 9.
7 INSPECT FUEL LINE PRESSURE (EXCESSIVE
FUEL LINE PRESSURE)
• Turn ignition key to OFF.
• Inspect fuel line pressure.
(See F20 FUEL LINE PRESSURE
INSPECTION.)
• Is fuel line pressure okay?
Yes Go to next step.
No Inspect following parts and repair or replace if necessary:
• Fuel pump maximum pressure
• Fuel return pipe for clogged
 If all items above are okay, replace pressure
regulator. Then, go to Step 19.
8 INSPECT PURGE SOLENOID VALVE FOR
STUCK OPEN
• Turn ignition key to OFF.
• Disconnect both hoses from purge solenoid
valve.
• Blow air through purge solenoid valve.
• Does air blow through?
Yes Replace purge solenoid valve.
No Go to Step 13.
9 INSPECT PCV VALVE OPERATION
• Inspect PCV valve operation.
(See F41 PCV VALVE INSPECTION.)
• Is PCV valve okay?
Yes Go to next step.
No Replace PCV, then go to Step 19.
10 INSPECT FUEL LINE PRESSURE (LOW FUEL
LINE PRESSURE)
• Turn ignition key to OFF.
• Inspect fuel line pressure.
(See F20 FUEL LINE PRESSURE
INSPECTION.)
• Is fuel line pressure okay?
Yes Go to step 13.
No Go to next step.
11 INSPECT FUEL PUMP MAXIMUM PRESSURE
• Stop engine.
• Turn ignition key to ON (Engine OFF).
• Perform fuel pump maximum pressure test.
(See F20 FUEL LINE PRESSURE
INSPECTION.)
• Is fuel pump maximum pressure okay?
Yes Go to next step.
No Inspect fuel pump circuit for open or poor connection.
• Repair or replace suspected circuit.
• If circuit is okay, replace fuel pump.
Then go to Step 19.
STEP INSPECTION ACTION