Engine Coolant Temperature Receiver Gauge Malfunction

METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: Engine Coolant Temperature Receiver Gauge Malfunction
- Engine Coolant Temperature Receiver Gauge Malfunction

DESCRIPTION

In this circuit, the meter CPU receives engine coolant temperature signals from the ECM using the CAN communication system. The meter CPU displays the engine coolant temperature, which is calculated based on the data received from the ECM.

WIRING DIAGRAM





INSPECTION PROCEDURE

HINT
If there is an open or short in the engine coolant temperature sensor circuit, the ECM stores the DTCs. Troubleshoot the SFI system Engine Control System - SFI System.

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM

(a) Check if a CAN communication DTC is output Diagnosis System.

Result





B -- GO TO CAN COMMUNICATION SYSTEM Initial Inspection and Diagnostic Overview
A -- Continue to next step.

2. PERFORM ACTIVE TEST USING TECHSTREAM (WATER TEMPERATURE METER OPERATION)

(a) Operate the Techstream according to the display and select the Active Test Meter / Gauge System.

Combination Meter





OK:

Engine coolant temperature receiver gauge indication is normal.

NG -- REPLACE COMBINATION METER ASSEMBLY Removal
OK -- Continue to next step.

3. READ VALUE USING TECHSTREAM (COOLANT TEMPERATURE)

(a) Operate the Techstream according to the display and select the Data List Meter / Gauge System.

Combination Meter





OK:

Engine coolant temperature value displayed on the Techstream is almost the same as the engine coolant temperature receiver gauge indication.

(b) Record the temperature displayed on the Techstream.

NG -- REPLACE COMBINATION METER ASSEMBLY Removal
OK -- Continue to next step.

4. READ VALUE USING TECHSTREAM (COOLANT TEMP)

(a) Operate the Techstream according to the display and select the Data List Meter / Gauge System.

Engine and ECT





OK:

Engine coolant temperature value displayed on the Techstream is almost the same as the previously recorded Techstream indication (Body Electrical / Combination Meter / Data List / Coolant Temperature).

Result





C -- REPLACE ECM Removal

B -- REPLACE ECM Removal

A -- REPLACE COMBINATION METER ASSEMBLY Removal