Possible Causes

circuit (P/LG) open or short to ground
instrument cluster
PCM
CAUTION:
- Use the correct probe adaptor(s) when making measurements. Failure to use the correct probe adaptor(s) may damage the connector.

MALFUNCTION INDICATOR LAMP (MIL) NEVER ON PINPOINT TEST REFERENCE

PINPOINT TEST 11		MALFUNCTION INDICATOR LAMP (MIL) IS NEVER ON
STEP	INSPECTION		ACTION
1	CHECK THE MIL FOR CORRECT OPERATION Key ON. Observe the MIL prove-out. Does the MIL prove-out correctly?	Yes	The system is operating correctly at this time.
1		No	If the MIL is always on, go to next step. If the MIL is never on, go to step 4.
2	CHECK THE PCM FOR OPERATION Key OFF. Disconnect: PCM 0140-175. Observe the MIL. Is the MIL still illuminated?	Yes	Go to next step.
2		No	Go to step 7.
3	CHECK CIRCUIT (P/LG) FOR A SHORT TO GROUND Key OFF. Disconnect: Instrument cluster 0922-101. Measure the resistance between the instrument cluster 0922-101 pin 14, circuit (P/LG), harness side and ground. Is the resistance greater than 10,000 ohms?	Yes	Go to step 6.
3		No	Repair circuit (P/LG) for a short to ground. Test the system for normal operation.
4	CHECK CIRCUIT (P/LG) FOR AN OPEN TO THE PCM Disconnect: PCM 0140-175. NOTE: If the fuse fails, repair the circuit for a short to voltage. Connect a fused (5A) jumper wire between the PCM 0140-175 pin 2, circuit (P/LG) and ground. Key ON. Is the MIL still illuminated?	Yes	Go to step 7.
4		No	Go to next step.
5	CHECK CIRCUIT (P/LG) FOR AN OPEN Key OFF. Disconnect: Instrument cluster 0922-101. Disconnect: PCM 0140-175. Measure the resistance between the instrument cluster 0922-101 pin 14, circuit (P/LG), harness side and the PCM 0140-175 pin 2, circuit (P/LG), harness side. Is the resistance less than 5 ohms?	Yes	Go to step 4.
5		No	Repair circuit (P/LG) for an open. Test the system for normal operation.
6	CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION Disconnect all the instrument cluster connectors. Check for: corrosion pushed-out pins Connect all the 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. See INSTRUMENT CLUSTER . Test the system for normal operation.
6		No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
7	CHECK FOR CORRECT PCM OPERATION Disconnect the PCM connector. Check for: corrosion pushed-out pins Connect the PCM connector and make sure it seats correctly. Operate the system and verify the concern is still present. Is the concern still present?	Yes	Install a new PCM. See POWERTRAIN CONTROL MODULE (PCM) REMOVAL / INSTALLATION . Test the system for normal operation.
7		No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.