Normal Operation

The instrument cluster receives the MIL status from the powertrain control module (PCM) over the high speed controller area network (HS-CAN) communication bus. When a fault condition exists in the PCM, a DTC is set in the PCM and a message is sent to the instrument cluster to illuminate the MIL warning indicator. The instrument cluster sets a continuous DTC if the PCM data is missing for more than 5 seconds or if invalid data is received and the instrument cluster illuminates the MIL.

This pinpoint test is intended to diagnose the following:

PCM
Instrument cluster

MALFUNCTION INDICATOR LAMP PINPOINT TEST 11

PINPOINT TEST 11		THE MALFUNCTION INDICATOR LAMP (MIL) IS NEVER/ALWAYS ON
STEP	INSPECTION		ACTION
1	RETRIEVE THE RECORDED DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND PCM SELF-TESTS Retrieve the recorded DTCs from the PCM continuous and on-demand self-tests. Are any DTCs retrieved?	Yes	See Diagnostic Trouble Code (DTC) Index - Powertrain Control Module (PCM) .
1		No	Go to next step.
2	RETRIEVE THE RECORDED DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND INSTRUMENT CLUSTER SELF-TESTS Retrieve the recorded DTCs from the instrument cluster continuous and on-demand self-tests. Is DTC U0100 retrieved?	Yes	CLEAR the DTCs. CYCLE the key and wait 10 seconds. REPEAT the self-test. If DTC U0100 is retrieved again, go to step 5.
2		No	Go to next step.
3	CARRY OUT THE INSTRUMENT CLUSTER INDICATOR LAMP CONTROL ACTIVE COMMAND USING THE SCAN TOOL Enter the following diagnostic mode on the scan tool: Instrument Cluster DataLogger Select the instrument cluster MIL indicator (MILJC) active command. Command the MIL indicator on then off again. Observe the MIL warning indicator. Does the MIL warning indicator illuminate when commanded on and turn off when commanded off?	Yes	Go to next step.
3		No	Go to step 5.
4	CHECK FOR CORRECT PCM OPERATION Disconnect all the PCM connectors. Check for: corrosion damaged pins pushed-out pins Connect the all the PCM connector 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. See Powertrain Control Module (PCM) Removal / Installation . TEST the system for normal operation.
4		No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
5	CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION Disconnect all the instrument cluster connectors. Check for: corrosion damaged pins 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.
5		No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.