Inspection Procedure O-3: The rear personal lamp does not illuminate normally.

caution

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

COMMENTS ON TROUBLE SYMPTOM

If the rear personal lamps do not illuminate or extinguish normally, wiring harness connector(s) or the bulb may be defective.

POSSIBLE CAUSES

Malfunction of the interior lamp switches
Malfunction of the room lamp bulbs
Malfunction of the rear personal lamp bulbs
Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE

Step 1. Pulse check

Check the input signals below, which are related to the rear personal lamps.

System switch	Check condition
Driver’s door switch	Driver’s door is opened while all the other doors are closed.
Passenger’s door switch	Passenger’s door is opened while all the other doors are closed.
Rear door (RH) switch	Rear door (RH) is opened while all the other doors are closed
Rear door (LH) switch	Rear door (LH) door is opened while all the other doors are closed
Tailgate switch	TAilgate is opened while all the other doors are closed
Driver’s door lock actuator switch	When the driver’s door is unlocked or locked
Interior lamp ON switch	When turned from OFF to ON
Interior lamp OFF switch	When turned from ON to OFF

OK: The M.U.T.-III sounds or the voltmeter needle fluctuates.

Q. Is the check result normal?

	All the signals are received normally. : Go to Step 2.

	All the door switch signals are not received. : Refer to inspection procedure P-12 "All the door switch signals are not received ."

	The driver’s door lock actuator switch signal is not received. : Refer to inspection procedure P-13 "The driver’s door lock actuator switch signal is not received <LH drive vehicles> or <RH drive vehicles>."

	The interior lamp switch signal is not received. : Refer to inspection procedure P-20 "The interior lamp "all on" or "all off" switch signal is not sent to the ETACS-ECU ."

Step 2. Retest the system.

Check which lamp does not illuminate when the lamp switches are operated.

Q. Which lamp does not illuminate?

	No lamps illuminate : Go to Step 3.

	One of the second seat lamps (RH or LH) or the third seat lamps (RH or LH) does not illuminate. : Go to Step 7.

Step 3. Check the rear personal lamp switches.

Check which position (ON or DOOR) of the rear personal lamp switch does not activate the relevant lamp.

Q. Which switch position does not activate the lamp?

	The lamp illuminates at neither the ON nor DOOR position. : Go to Step 4.

	The lamp does not illuminate at the DOOR position. : Go to Step 6.

	The lamp does not illuminate at the ON position. : Replace the rear personal lamp.

Step 4. Connector check: C-219 ETACS-ECU connector, E-09 rear personal lamp connector

Q. Is the check result normal?

Go to Step 5.

Repair the defective connector.

Step 5. Check the wiring harness from C-219 ETACS-ECU connector terminal No.6 to E-09 rear personal lamp connector terminal No.2.

note

Prior to the wiring harness inspection, check intermediate connector E-11 and junction block connector C-211, and repair if necessary.

Check the earth wires for open circuit.

Q. Is the check result normal?

Replace the rear personal lamp.

Repair the wiring harness.

Step 6. Check the wiring harness from C-219 ETACS-ECU connector terminal No.5 to E-09 rear personal lamp connector terminal No.3.

note

Prior to the wiring harness inspection, check intermediate connector E-11 and junction block connector C-211, and repair if necessary.

Check the earth wires for open circuit.

Q. Is the check result normal?

Replace the rear personal lamp.

Repair the wiring harness.

Step 7. Connector check: E-09 rear personal lamp connector (for second seat: LH), E-04 rear personal lamp connector (for second seat: RH), E-08 rear personal lamp connector (for third seat: LH), E-06 rear personal lamp connector (for third seat: RH)

Q. Is the check result normal?

Go to Step 8.

Repair the defective connector.

Step 8. Check the bulbs of the rear personal lamp.

Check that the rear personal lamp bulbs are not burned out.

Q. Is the check result normal?

	Go to Step 9

	Replace the rear personal lamp bulb.

Step 9. Check the rear personal lamp switches.

Check which switch position (ON or DOOR) does not activate the rear personal lamp.

Q. Which switch position does not activate the lamp?

	The lamp illuminates at neither the ON nor DOOR position. : Go to Step 10.

	The lamp does not illuminate at the DOOR position. : Go to Step 11.

	The lamp does not illuminate at the ON position. : Go to Step 13.

Step 10. Check the wiring harness from C-219 ETACS-ECU connector terminal No.6 to E-09 rear personal lamp (for second seat: RH) connector terminal No.2, E-04 rear personal lamp (for second seat: LH) connector terminal No.2, E-08 rear personal lamp (for third seat: LH) connector terminal No.2, E-06 rear personal lamp (for third seat: RH) connector terminal No.2.

note

Prior to the wiring harness inspection, check intermediate connector E-11 and junction block connector C-211, and repair if necessary.

Check the power supply line for open circuit.

Q. Is the check result normal?

Replace the rear personal lamp.

Repair the wiring harness.

Step 11. Connector check: E-02 room lamp connector

Q. Is the check result normal?

Go to Step 12.

Repair the defective connector.

Step 12. Check the wiring harness from E-02 room lamp connector terminal No.9 to E-09 rear personal lamp (for second seat: RH) connector terminal No.1, E-04 rear personal lamp (for second seat: LH) connector terminal No.1, E-08 rear personal lamp (for third seat: LH) connector terminal No.1, E-06 rear personal lamp (for third seat: RH) connector terminal No.1.

Check the earth wires for open circuit.

Q. Is the check result normal?

Replace the rear personal lamp.

Repair the wiring harness.

Step 13. Check the wiring harness from C-219 ETACS-ECU connector terminal No.5 to E-09 rear personal lamp (for second seat: RH) connector terminal No.3, E-04 rear personal lamp (for second seat: LH) connector terminal No.3, E-08 rear personal lamp (for third seat: LH) connector terminal No.3, E-06 rear personal lamp (for third seat: RH) connector terminal No.3.

note

Prior to the wiring harness inspection, check intermediate connector E-11 and junction block connector C-211, and repair if necessary.

Check the earth wires for open circuit.

Q. Is the check result normal?

Replace the rear personal lamp.

Repair the wiring harness.