Test D: Incorrect Temperature Gauge Indication
- Turn ignition switch to LOCK position. Disconnect engine coolant temperature sensor connector C1061. Connect a 10-amp fused jumper wire between ground and terminal No. 1 (Red/White wire) at engine coolant temperature gauge sensor harness connector C1061. Turn ignition switch to RUN position. If engine coolant temperature gauge read HOT, replace engine coolant temperature gauge sensor. If engine coolant temperature gauge does not read HOT, go to next step.
- Turn ignition switch to LOCK position. Disconnect instrument cluster harness connector C220a. See Figure . Measure resistance between terminal No. 9 (Red/White wire) at instrument cluster harness connector C220a and terminal No. 1 (Red/White wire) at engine coolant temperature sender harness connector C1061. Measure resistance between terminal No. 9 (Red/White wire) at instrument cluster harness connector C220a. If resistance is less than 5 ohms between instrument cluster and engine coolant temperature sender or more than 10 k/ohms between instrument cluster and ground, go to next step. If resistance is more than 5 ohms between instrument cluster and engine coolant temperature sender or less than 10 k/ohms between instrument cluster and ground, repair open or short in Red/White wire and retest.
- Inspect instrument cluster printed circuit for damage. If instrument cluster printed circuit is okay, replace coolant temperature gauge. See FUEL GAUGE/TEMPERATURE GAUGE under REMOVAL & INSTALLATION. If instrument cluster printed circuit is not okay, replace instrument cluster printed circuit. See PRINTED CIRCUIT under REMOVAL & INSTALLATION.