Inspection Procedure B-8: Power window anti-trap function does not work normally. <LH drive vehicles>






COMMENTS ON TROUBLE SYMPTOM
The revolution detection sensor, which is incorporated in the power window motor, may be defective.

PROBABLE CAUSE

  • Malfunction of the power window motor

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code.
When the ignition switch is turned to the "ON" position, check that the ETACS-ECU does not set the diagnosis code.

Q. Is the diagnosis code set?
Refer to .
Go to Step 2.

STEP 2. Check the power window operating current.
Check that the power window operating current is normal (Refer to ).

Q. Is the check result normal?
Adjust the door window glass (Refer to ), and then go to Step 3.
Replace the defective power window motor which operating current are abnormal.

STEP 3. Confirm the power window learning function.
Check that the power window switch has learned the fully closed position of the windows (Refer to ).

Q. Is the check result normal?
Go to Step 4.
Make the power window switch learn the fully closed position of the windows (Refer to ).

STEP 4. Determine a trouble spot.

Q. Which door does the power window anti-trap function fail on?
Driver’s door : Go to Step 5.
Front passenger’s door : Go to Step 8.
Rear right door <Double cab> : Go to Step 14.
Rear left door <Double cab> : Go to Step 20.

STEP 5. Connector check: E-03 power window main switch connector and E-18 power window motor (front: LH) connector

Q. Is the check result normal?

Go to Step 6.

Repair the defective connector.

STEP 6. Check the wiring harness from E-03 power window main switch connector terminal Nos. 8, 9, 10 and 12 to E-18 power window motor (front: LH) connector terminal Nos. 6, 2, 4 and 5.


  • Check the input and output lines to the revolution detection sensor for open or short circuit.

Q. Is the check result normal?

Go to Step 7.

Repair the wiring harness.

STEP 7. Retest the system.
After the power window main switch is replaced, check that the driver’s power window anti-trap function works.
(1)Replace the power window main switch.
(2)Check that the driver’s power window anti-trap function works.

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 power window motor (front: LH).

STEP 8. Connector check: E-01 power window motor (front: RH) connector

Q. Is the check result normal?

Go to Step 9.

Repair the defective connector.

STEP 9. Resistance measurement at the E-01 power window motor (front: RH) connector.

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

(2)Continuity between E-01 power window motor (front RH) connector terminal No.6 and body earth.
OK: Continuity (Less than 2 Ω)

Q. Is the check result normal?

Go to Step 11.

Go to Step 10.

STEP 10. Check the wiring harness E-01 power window motor (front: RH) connector terminal No.6 to body earth.


note Prior to the wiring harness inspection, check intermediate connector C-122 and repair if necessary.

  • Check the input and output lines to the revolution detection sensor for open or short circuit.

Q. Is the check result normal?

Go to Step 13.

Repair the wiring harness.

STEP 11. Connector check: E-26 power window sub switch (front) connector



Q. Is the check result normal?

Go to Step 12.

Repair the defective connector.

STEP 12. Check the wiring harness from E-26 power window sub switch (front) connector terminal Nos. 2, 3 and 8 to E-01 power window motor (front: RH) connector terminal Nos. 2, 5 and 4.


  • Check the input and output lines to the revolution detection sensor for open or short circuit.

Q. Is the check result normal?

Go to Step 13.

Repair the wiring harness.

STEP 13. Retest the system.
After the power window sub switch (front) is replaced, check that the front passenger’s anti-trap function can be operated by the power window sub switch (front).
(1)Replace the power window sub switch (front).
(2)Check that the front passenger’s power window anti-trap function works.

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 power window motor (front: RH).

STEP 14. Connector check: E-05 power window motor (rear: RH) connector

Q. Is the check result normal?

Go to Step 15.

Repair the defective connector.

STEP 15. Resistance measurement at the E-05 power window motor (rear: RH) connector.

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

(2)Continuity between E-05 power window motor (rear: RH) connector terminal No.6 and body earth
OK: Continuity (Less than 2 Ω)

Q. Is the check result normal?

Go to Step 17.

Go to Step 16.

STEP 16. Check the wiring harness from E-05 power window motor (rear: RH) connector terminal No.6 to body earth.


note Prior to the wiring harness inspection, check intermediate connector D-24, and repair if necessary.

  • Check the input and output lines to the revolution detection sensor for open or short circuit.

Q. Is the check result normal?

Go to Step 19.

Repair the wiring harness.

STEP 17. Connector check: E-06 power window sub switch (rear: RH) connector

Q. Is the check result normal?

Go to Step 18.

Repair the defective connector.

STEP 18. Check the wiring harness from E-06 power window sub switch (rear: RH) connector terminal Nos. 2, 3 and 8 to E-05 power window motor (rear: RH) connector terminal Nos. 4, 5 and 2.


  • Check the input and output lines to the revolution detection sensor for open or short circuit.

Q. Is the check result normal?

Go to Step 19.

Repair the wiring harness.

STEP 19. Retest the system.
After the power window sub switch (rear: RH) is replaced, check that the rear right door anti-trap function can be operated by the power window sub switch.
(1)Replace the power window sub switch (rear: RH).
(2)Check that the rear right power window anti-trap function works.

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 power window motor (rear: RH).

STEP 20. Connector check: E-14 power window motor (rear: LH) connector

Q. Is the check result normal?

Go to Step 21.

Repair the defective connector.

STEP 21. Resistance measurement at the E-14 power window motor (rear: LH) connector.

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

(2)Continuity between E-14 power window motor (rear: LH) connector terminal No.6 and body earth
OK: Continuity (Less than 2 Ω)

Q. Is the check result normal?

Go to Step 23.

Go to Step 22.

STEP 22. Check the wiring harness from E-14 power window motor (rear: LH) connector terminal No.6 to body earth.


note Prior to the wiring harness inspection, check intermediate connector D-14, and repair if necessary.

  • Check the input and output lines to the revolution detection sensor for open or short circuit.

Q. Is the check result normal?

Go to Step 25.

Repair the wiring harness.

STEP 23. Connector check: D-02 power window sub switch (rear: LH) connector

Q. Is the check result normal?

Go to Step 24.

Repair the defective connector.

STEP 24. Check the wiring harness from D-02 power window sub switch (rear: LH) connector terminal Nos. 2, 3 and 8 to E-14 power window motor (rear: LH) connector terminal Nos. 2, 4 and 5.


  • Check the input and output lines to the revolution detection sensor for open or short circuit.

Q. Is the check result normal?

Go to Step 25.

Repair the wiring harness.

STEP 25. Retest the system.
After the power window sub switch (rear: LH) is replaced, check that the rear left door anti-trap function can be operated by the power window sub switch.
(1)Replace the power window sub switch (rear: LH).
(2)Check that the rear left power window anti-trap function works.

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 power window motor (rear: LH).