Temperature Sensor (Gauge): Testing and Inspection

Engine Coolant Temperature Receiver Gauge Malfunction

DESCRIPTION
The meter CPU receives engine coolant temperature signals from the ECM via the CAN communication lines (CAN No. 1 Bus). The meter CPU displays engine coolant temperature that is calculated based on the data received from the ECM.

Wiring Diagram:

Step 1:

Step 2-4:

Step 4(continued)-5:

INSPECTION PROCEDURE

HINT: If there is an open or short in the engine coolant temperature sensor circuit, the ECM outputs the DTCs. Perform troubleshooting with the "SFI System".