Test K

PINPOINT TEST K: INCORRECT TEMPERATURE GAUGE INDICATION

Test K1:

Test K2-K3:

Normal Operation
The powertrain control module (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 standard corporate protocol (SCP) communication network, circuits 914 (TN/OG) and 915 (PK/LB).

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