Inspection Procedure 5: Engine Coolant Temperature Gauge does not Work (other meters work). <2800>

COMMENTS ON TROUBLE SYMPTOM

If only the engine coolant temperature gauge does not operate, the engine coolant temperature sensor, the combination meter, the wiring harness or its connector may be defective.

PROBABLE CAUSES

Damaged harness wires and connectors
Malfunction of the engine coolant temperature sensor
Malfunction of combination meter

DIAGNOSIS PROCEDURE

STEP 1. Connector check: B-26 engine coolant temperature sensor connector

Q. Is the check result normal?

	Go to Step 2.

	Repair or replace the damage component(s).

STEP 2. Check the engine coolant temperature sensor.

Refer to GROUP 16-Glow system, On-vehicle service

Q. Is the check result normal?

	Go to Step 3.

	Replace the engine coolant temperature sensor.

STEP 3. Connector check: D-02 combination meter connector

Q. Is the check result normal?

	Go to Step 4.

	Repair or replace the damage component(s).

STEP 4. Check the wiring harness between B-26 engine coolant temperature sensor connector terminal No.1 and D-02 combination meter connector terminal No.48.

note

Prior to the wiring harness inspection, check intermediate connector D-230, and repair if necessary.

Q. Is the check result normal?

	Go to Step 5.

	Repair the wiring harness.

STEP 5. Retest the system

Q. Is the engine coolant temperature gauge normal?

	The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).

	Replace the combination meter.