Engine Coolant Temperature Gauge Malfunction

Engine Coolant Temperature Gauge Malfunction

DESCRIPTION

In this circuit, the NO.1 meter ECU receives engine coolant temperature signals from the ECM using CAN communication lines. The NO.1 meter ECU displays an engine coolant temperature that is calculated based on the data received from the ECM.

Wiring Diagram:

Step 1:

Step 2-3:

Step 3 (Continued)-6:

INSPECTION PROCEDURE

HINT: If there is an open or short in the engine coolant temperature sensor circuit, an SFI system DTC is output. If output, perform troubleshooting on the SFI system first.