Inspection Procedure O-3: The rear personal lamp does not illuminate normally. <Vehicles without keyless entry system>


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 rear personal lamp bulbs
  • Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE

Step 1. SWS monitor data list
<Selected item> ETACS ECU
  • Driver’s door is open
Item No.
 Item name
 Normal condition
Item 32
 DR DOOR SW
 ON
OK: Normal condition is displayed.

Q. Is the check result normal?
Go to Step 2.
Refer to inspection procedure P-5 "The driver’s door switch signal is not received <LH drive vehicles> or <RH drive vehicles> ."

Step 2. ETACS switch data by using the SWS monitor
Check the ETACS-ECU signal related to the rear personal lamp illumination.

  • Ignition switch: OFF (key inserted)
Item No.
 Item name
 Normal condition
Item 03
 KEY REMINSW
 OFF

  • Passenger’s door: Close → Open
Item No.
 Item name
 Normal condition
Item 05
 PASS DOOR SW
 from OFF to ON

  • Tailgate: Close → Open
Item No.
 Item name
 Normal condition
Item 07
 TRK LID LA SW
 from OFF to ON

  • Rear door (RH): Close → Open
Item No.
 Item name
 Normal condition
Item 41
 R.DOOR(RH) SW
 from OFF to ON

  • Rear door (LH): Close → Open
Item No.
 Item name
 Normal condition
Item 42
 R.DOOR(LH) SW
 from OFF to ON

  • Driver’s door: Unlock → Lock
Item No.
 Item name
 Normal condition
Item 21
 DR DOR LOK SW
 from OFF to ON
Item 22
 DR DOR ULOK SW
 from ON to OFF
OK: Normal conditions displayed for all the items.

Q. Is the check result normal?
Normal conditions are displayed for all the items. : Go to Step 3.
Normal condition is not displayed for item No.03 : Refer to inspection procedure P-10 "The key reminder switch signal is not received ."
Normal condition is not displayed for item No.05, 07, 41or 42 : Refer to inspection procedure P-12 "All the door switch signals are not received ."
Normal condition is not displayed for item No.21 and 22 : Refer to inspection procedure P-13 "The driver’s door lock actuator switch signal is not received <LH drive vehicles> or <RH drive vehicles> ."

Step 3. Pulse check
Check the input signals below, which are related to the rear personal lamps.
System switch
 Check condition
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?
Go to Step 4.
Refer to inspection procedure P-20 "The interior lamp "all on" or "all off" switch signal is not sent to the ETACS-ECU ."

Step 4. 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 5.
One of the second seat lamps (RH or LH) or the third seat lamps (RH or LH) does not illuminate. : Go to Step 9.

Step 5. 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 6.
The lamp does not illuminate at the DOOR position. : Go to Step 8.
The lamp does not illuminate at the ON position. : Replace the rear personal lamp.

Step 6. Connector check: C-219 ETACS-ECU connector, E-09 rear personal lamp connector




Q. Is the check result normal?

Go to Step 7.

Repair the defective connector.

Step 7. 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 8. 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 9. 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 10.

Repair the defective connector.

Step 10. 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 11.
Replace the rear personal lamp bulb.

Step 11. 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 12.
The lamp does not illuminate at the DOOR position. : Go to Step 13.
The lamp does not illuminate at the ON position. : Go to Step 15.

Step 12. 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 13. Connector check: E-02 room lamp connector


Q. Is the check result normal?

Go to Step 14.

Repair the defective connector.

Step 14. 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 15. 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.