Temperature Sensor (Gauge): Testing and Inspection

Coolant Temperature Gauge Troubleshooting

'04-05 models

1. Check for DTCs with the HDS.

Is DTC P0116, P0117, or P0118 indicated?

YES - Go to the ECM DTC Troubleshooting.

NO - Go to step 2.

2. Remove the gauge assembly.
3. Disconnect the gauge assembly connector B (30P) and the ECM connector A (32P).




4. Check for continuity between the gauge assembly connector B (30P) No. 5 terminal and ECM connector A (32P) No. 1 terminal.

Is there continuity?

YES - Go to step 5.

NO - Repair open in the YEL/GRN wire between the gauge assembly and the ECM.




5. Check for continuity between the gauge assembly connector B (30P) No. 5 terminal and body ground.

Is there continuity?

YES - Check the output from the ECM first, if OK, repair short to body ground in the YEL/GRN wire between the gauge assembly and the ECM.

NO - Check connections. If OK, substitute a known-good gauge assembly. If the problem goes away, replace the main printed circuit board in the gauge assembly.