Inspection Procedure 9: One of the Position Lamps, the Licence Plate Lamps or the Tail Lamps does not Illuminate.














COMMENTS ON TROUBLE SYMPTOM



PROBABLE CAUSES



  • Malfunction of bulbs
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE


STEP 1. Connector check: A-35 (position lamp LH) or A-53 (position lamp RH) headlamp assembly connector, F-23 (LH) or F-08 (RH) rear combination lamp connector, and F-15 (LH) or F-13 (RH) licence plate lamp connector


Q. Is the check result normal?





STEP 2. Bulb check



Q. Is the check result normal?





STEP 3. Resistance measurement at the A-35 (position lamp LH) or A-53 (position lamp RH) headlamp assembly connector, F-23 (LH) or F-08 (RH) rear combination lamp connector, and F-15 (LH) or F-13 (RH) licence plate lamp connector


(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 A-35 (LH), A-53 (RH) headlamp assembly connector terminal No. 6 and the body earth. <Position lamp>
  • Measure the resistance between the F-23 (LH) and F-08 (RH) rear combination lamp connector terminal No. 3 and the body earth.
  • Measure the resistance between the F-15 (LH), F-13 (RH) licence plate lamp connector terminal No. 1 and the body earth.
OK: Continuity exists (2 Ω or less)

Q. Is the check result normal?





STEP 4. Wiring harness check between the A-35 (position lamp LH) or A-53 (position lamp RH) headlamp assembly connector terminal No. 6, F-23 (LH) or F-08 (RH) rear combination lamp connector terminal No. 3 or F-15 (LH) or F-13 (RH) licence plate lamp connector terminal No. 1 and the body earth


note Before the wiring harness check, check the intermittent connector F-40, and repair that if necessary.

  • Check the earth wires for open circuit.

Q. Is the check result normal?





STEP 5. Connector check: C-304 (position lamp), C-311 (tail lamp or licence plate lamp) ETACS-ECU connector


Q. Is the check result normal?





STEP 6. Wiring harness check between the A-35 (position lamp LH) or A-53 (position lamp RH) headlamp assembly connector terminal No. 4 and C-304 ETACS-ECU connector terminal No. 3 (LH) or terminal No. 7 (RH), F-23 (LH) or F-08 (RH) rear combination lamp connector terminal No. 2 or F-15 (LH) or F-13 (RH) licence plate lamp connector terminal No. 2 and C-311 ETACS-ECU connector terminal No. 10 (tail lamp LH or licence plate lamp) or terminal No. 13 (tail lamp RH)


note Before the wiring harness check, check the intermittent connector D-12, D-16, F-39 and joint connector C-30, and repair that if necessary.

  • Check the output lines for open circuit.

Q. Is the check result normal?





STEP 7. Retest the system



Q. Is the check result normal?