NO. 9 WATER TEMPERATURE GAUGE INDICATION IS DEFECTIVE [INSTRUMENT CLUSTER]

id0903d5808200

9

Water temperature gauge indication is defective
POSSIBLE CAUSE
•  ECT sensor malfunction
•  Instrument cluster malfunction
•  Connector or pin malfunction
•  Open or short circuit in wiring between instrument cluster and PCM

Diagnostic procedure

STEP

INSPECTION

ACTION
1
•  Start the engine.
•  Does the water temperature gauge needle move to medium range gradually and stay there?
Yes
Troubleshooting completed.
No
Go to the next step.
2
•  Start the instrument cluster input/output check mode.
•  Inspect the water temperature gauge using the check code 25.
•  Is the water temperature gauge normal?
Yes
Inspect the PCM or connectors.
No
Replace the instrument cluster.
3
•  Turn the ignition (F2, G6)/engine (WE-C, WL-3, WL-C, WLT-1, WLT-2) switch off.
•  Inspect the instrument cluster connector terminals for poor connection (such as damaged/pulled-out pins, and corrosion).
•  Are the terminals normal?
Yes
Go to the next step.
No
Repair or replace the terminal.
4
•  Turn the ignition (F2, G6)/engine (WE-C, WL-3, WL-C, WLT-1, WLT-2) switch to LOCK position.
•  Remove the instrument cluster.
•  Disconnect the instrument cluster connector.
•  Inspect for continuity between instrument cluster terminal 2I and GND.
•  Is there continuity?
Yes
Repair or replace the wiring harness between the instrument cluster and GND.
No
Go to the next step.
5
•  Turn the ignition (F2, G6)/engine (WE-C, WL-3, WL-C, WLT-1, WLT-2) switch to LOCK position.
•  Inspect the ECT senor terminal for poor connection (such as damaged/pulled-out pins, and corrosion).
•  Are the terminals normal?
Yes
Go to the next step.
No
Repair or replace the terminal.
6
•  Turn the ignition (F2, G6)/engine (WE-C, WL-3, WL-C, WLT-1, WLT-2) switch to LOCK position.
•  Disconnect the ECT sensor connector (with the instrument cluster connector disconnected).
•  Inspect for continuity between instrument cluster terminal 2I and ECT sensor terminal C.
•  Is there continuity?
Yes
Inspect the ECT sensor and related wiring harness.
(See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [WL-3].)
(See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [WL-C, WE-C].)
No
Repair or replace the wiring harness between the instrument cluster and vehicle speed sensor.