Pinpoint Test X: The O/D Off Indicator Is Never/Always On (Except SVT)

X1 RETRIEVE AND RECORD THE DTCS FROM BOTH CONTINUOUS AND ON-DEMAND POWERTRAIN CONTROL MODULE (PCM) SELF-TESTS

Key in OFF position.
Connect the diagnostic tool.
Key in ON position.
Enter the following diagnostic mode on the diagnostic tool: PCM Self-Test.
Use the PCM DTCs from the continuous and on-demand self-tests.
Are any PCM DTCs recorded?

Yes

REFER to INTRODUCTION - CNG, FLEX-FUEL & GASOLINE .

GO to X2.

X2 CHECK THE INSTRUMENT CLUSTER O/D OFF INDICATOR OPERATION

Key in OFF position.
Connect the diagnostic tool.
Key in ON position.
Enter the following diagnostic mode on the diagnostic tool: Instrument Cluster Active Command.
Select the instrument cluster active command ALL LAMPS ON and OFF.
Does the O/D OFF indicator illuminate and turn off?

Yes

GO to X3.

GO to X4.

X3 CHECK FOR CORRECT PCM OPERATION

Disconnect all PCM connectors.
Check for:
- Corrosion
- pushed-out pins
Connect all PCM connectors and make sure they seat correctly.
Operate the system and verify the concern is still present.
Is the concern still present?

Yes

INSTALL a new PCM. Refer to POWERTRAIN CONTROL MODULE (PCM) . TEST the system for normal operation.

The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. TEST the system for normal operation.

X4 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION

Disconnect all instrument cluster connectors.
Check for:
- Corrosion
- pushed-out pins
Connect all instrument cluster connectors and make sure they seat correctly.
Operate the system and verify the concern is still present.
Is the concern still present?

Yes

INSTALL a new instrument cluster. Refer to INSTRUMENT CLUSTER . TEST the system for normal operation.

The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. TEST the system for normal operation.