Inspection Procedure 2: Any of the Tail lamps does not Illuminate.

COMMENTS ON TROUBLE SYMPTOM

If any of the taillamps does not illuminate, the wiring harness, connector(s), or rear combination lamp unit may have a problem, or the fuse may be burned out.

PROBABLE CAUSES

Malfunction of rear combination lamp unit
Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Connector check: D-10 (RH) and D-15 (LH) rear combination lamp connectors

Q. Is the check result normal?

Go to Step 2.

Repair the defective connector.

STEP 2. Resistance measurement at the D-10 (RH) and D-15 (LH) rear combination lamp connectors

(1)Disconnect the connector, and measure at the wiring harness side.

(2)Measure the resistance between the connector of lamp which does not illuminate and the body earth.

Measure the resistance between the D-10 (RH) and D-15 (LH) rear combination lamp connector terminal No. 4 and the body earth.

OK: Continuity exists (2 Ω or less)

Q. Is the check result normal?

Go to Step 4.

Go to Step 3.

STEP 3. Wiring harness check between the D-10 (RH) and D-15 (LH) rear combination lamp connector terminal No. 4 and the body earth.

Check the earth wires for open circuit.

Q. Is the check result normal?

Go to Step 4.

Repair the wiring harness.

STEP 4. Connector check: C-311 ETACS-ECU connector

Q. Is the check result normal?

Go to Step 5.

Repair the defective connector.

STEP 5. Wiring harness check between the D-10 (RH) and D-15 (LH) rear combination lamp connector terminal No. 2 and the C-311 ETACS-ECU connector terminal No. 13 <RH> or 10 <LH>

Check the output lines for open circuit.

Q. Is the check result normal?

Go to Step 6.

Repair the wiring harness.

STEP 6. Retest the system

Check that the taillamp illuminates normally.

Q. Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction

Replace the rear combination lamp unit.