Possible Causes

PCM
instrument cluster

INCORRECT TEMPERATURE GAUGE INDICATION - PINPOINT TEST REFERENCE

PINPOINT TEST 2		INCORRECT TEMPERATURE GAUGE INDICATION
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 there 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 U0294 retrieved?	Yes	CLEAR the DTCs. REPEAT the self-test. If DTC U0294 is retrieved again, go to step 4. For all other instrument cluster DTCs, See INSTRUMENT CLUSTER DIAGNOSTIC TROUBLE CODE (DTC) INDEX , .
2		No	Go to next step.
3	CARRY OUT THE INSTRUMENT CLUSTER GAUGES ACTIVE COMMAND USING THE SCAN TOOL Key ON engine OFF (KOEO). Using the scan tool select the instrument cluster gauges active command. Select and scroll the temperature gauge 20%, 50% and 70%. Does the temperature gauge indicate approximately 1/4 of the gauge sweep between cold (C) and mid-range at 20%, mid-range at 50% and 3/4 of the gauge sweep between mid-range and hot (H) at 70%?	Yes	Go to next step.
3		No	Go to step 5.
4	CHECK FOR CORRECT PCM OPERATION Disconnect all PCM connectors. Check for: corrosion damaged pins 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. 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 instrument cluster connectors. Check for: corrosion damaged pins 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	Replace the 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. Clear the DTCs. Test the system for normal operation.