Inspection Procedure K-8: Any of tail lamps, position lamps or licence plate lamp does not illuminate.


caution Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.


COMMENTS ON TROUBLE SYMPTOM
If the tail/stop lamps, the position lamps or the licence plate lamps do not illuminate, the wiring harness connector(s), the bulb or the fuse may be defective or burned out.

POSSIBLE CAUSES

  • Burned-out bulb
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Connector check: G-08 tail/stop lamp (RH) connector or G-20 tail/stop lamp (LH) connector, A-39 position lamp (RH) connector or A-17 position lamp (LH) connector, G-15 licence plate lamp (RH) connector or G-19 licence plate lamp (LH) connector.



Q. Is the check result normal?

Go to Step 2.

Repair the defective connector.

Step 2. Check the bulbs of the position lamp or the licence plate lamp.
Check the bulb of the lamp which does not illuminate.

Q. Is the check result normal?
Go to Step 3.
Replace the bulb of the lamp which does not illuminate.

Step 3. Resistance measurement at the G-08 tail/stop lamp (RH) connector or G-20 tail/stop lamp (LH) connector, the A-39 position lamp (RH) connector or A-17 position lamp (LH) connector, the G-15 licence plate lamp (RH) connector or G-19 licence plate lamp (LH) connector.



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



(2)Check the resistance between the lamp connector and body earth.

  • Resistance between A-39 position lamp (RH) connector terminal No.1 and body earth
  • Resistance between A-17 position lamp (LH) connector terminal No.1 and body earth
  • Resistance between G-08 tail/stop lamp (RH) connector terminal No.1 and body earth
  • Resistance between G-20 tail/stop lamp (LH) connector terminal No.1 and body earth
  • Resistance between G-15 licence plate lamp (RH) connector terminal No.1 and body earth
  • Resistance between G-19 licence plate lamp (LH) connector terminal No.1 and body earth
OK: 2 Ω or less

Q. Is the check result normal?

Go to Step 5.

Go to Step 4.

Step 4. Connector check: A-25 earth connector <position lamp>.

Q. Is the check result normal?

Go to Step 5.

Repair the defective connector.

Step 5. Check the wiring harness from G-08 tail/stop lamp (RH) connector terminal No.1, G-20 tail/stop lamp (LH) connector terminal No.1, G-15 licence plate lamp (RH) connector terminal No.1 or G-19 licence plate lamp (LH) connector terminal No.1 to body earth, or A-39 position lamp (RH) connector terminal No.1 or A-17 position lamp (LH) connector terminal No.1 to A-25 earth connector terminal No.2.




note Prior to the wiring harness inspection, check intermediate connector G-14 <licence plate lamp>, G-21 <tail/stop lamp (LH) >, and repair if necessary.

  • Check the earth wires for open circuit.

Q. Is the check result normal?

Go to Step 6.

Repair the wiring harness.

Step 6. Connector check: A-14X front-ECU connector.

Q. Is the check result normal?

Go to Step 7.

Repair the defective connector.

Step 7. Check the wiring harness from G-08 tail/stop lamp (RH) connector terminal No.2, G-20 tail/stop lamp (LH) connector terminal No.2, A-39 position lamp (RH) connector terminal No.2, A-17 position lamp (LH) connector terminal No.2, G-15 licence plate lamp (RH) connector terminal No.2 or G-19 licence plate lamp (LH) connector terminal No.2 to A-14X front-ECU connector terminal No.8.








note Prior to the wiring harness inspection, check intermediate connector C-16 <tail/stop lamp (LH) and licence plate lamp>, C-125 <tail/stop lamp and licence plate lamp>, G-21 <tail/stop lamp (LH)>, joint connector C-31 <tail/stop lamp (RH)>, junction block connector C-203 <tail/stop lamp (LH)> and C-210 <tail/stop lamp (LH)>, and repair if necessary.

  • Check the output lines for open circuit.

Q. Is the check result normal?

Go to Step 8.

Repair the wiring harness.

Step 8. Retest the system.
Check that the tail lamps, the position lamps and the licence plate lamps illuminate normally.

Q. Is the check result normal?
The lamps illuminate normally at both high and low beams. : The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
When the tail/stop lamps do not illuminate : Replace the tail/stop lamp socket assembly.
When the position lamps do not illuminate : Replace the position lamp socket.
When the licence plate lamps do not illuminate : Replace the licence plate lamp socket.