Troubleshooting
74 RENR2696-01
Troubleshooting Section
System Response:
The Electronic Control Module (ECM) will log the
diagnostic code. The ECM will force the engine to a
default value
or a safe speed. The diagnostic code
may be viewed on the electronic service tool.
Possible Perf
ormance Effect:
The engine will shut down.
Test Step 1.
Perform the fo
llowing diagnostic procedure: “Fuel
Injection Pump Circuit - Test”
Results:
•
OK – STOP.
Test Step 2.
Perform the f
ollowing diagnostic procedure: “CAN
Data Link Circuit - Test”
Results:
•
OK – STOP.
•
REPAIRED, OK – STOP.
i01798162
CID 0774 FMI 02 T hro ttle
Demand Sensor No.2 Erratic
Or Interm it
tent
Conditions Which Generate This Code:
The ECM dete
cts one of the following conditions:
•
Erratic data
•
Intermittent data
•
Incorrect d
ata
System Response:
The ECM will log the diagnostic code. The diagnostic
code may be viewed on the electronic service tool.
The ECM will return the engine to low idle or to a safe
speed while the diagnostic code is active.
Possible Pe rformance Effect:
The engine speed defaults to low idle or a
predetermined safe speed.
The engine will remain at this speed while the
diagnostic code remains active.
The reduction of speed is determined by the current
speed of the engine.
When a fault is detected and the engine is above the
predetermined safe speed, the engine will reduce
speed to the s
afe speed.
When a fault is detected and the engine is below the
predetermin
ed safe speed, the engine will match the
correct speed.
The throttle
is ignored by the ECM until the fault is
repaired.
The throttle
switch will also be ignored by the ECM
until the keyswitch has been turned to the OFF
position and then back to the ON position.
•
Low power
•
Reduced eng
ine speed
Perform the following diagnostic procedure: “Throttle
Switch Circ
uit - Test”
Results:
•
OK – STOP.
i01798163
CID 0774 FMI 03 Th rottle
Demand Sensor No .2 Ope n
Circuit Or
Shorted H igh
Conditions Which G enerate This Code:
The ECM det
ects one of the following conditions:
•
Voltage for the throttle position sensor is above
normal.
•
Invalid throttle position signal
System Response:
The ECM wil
l log the diagnostic code. The diagnostic
code may be viewed on the electronic service tool.