Test K

PINPOINT TEST K: INCORRECT TEMPERATURE GAUGE INDICATION

Test K1:

Test K2-K3:

Normal Operation
The PCM utilizes the engine coolant temperature (ECT) sensor to measure the engine coolant temperature through circuit 354 (LG/RD). The PCM provides the engine coolant temperature data to the instrument cluster over the CAN, circuits 3125 (RD/YE) and 3126 (TN/YE).

Possible Causes
- circuit 354 (LG/RD) open, short to ground or short to power
- ECT sensor
- PCM
- instrument cluster