Inspection Procedure G-2

Rear Wiper and Washer: Rear Wiper does not Stop at the Predetermined Park Position

Rear Wiper Auto Stop Circuit:

TECHNICAL DESCRIPTION (COMMENT)
If the rear wiper does not stop at predetermined park position, the rear wiper motor or the ETACS-ECU may be defective.

TROUBLESHOOTING HINTS
- Malfunction of the rear wiper motor
- Malfunction of the ETACS-ECU
- Damaged harness wires or connectors

DIAGNOSIS

Required Special Tools:
- MB991223: Test Harness Set
- MB991502: Scan Tool (MUT-II)

STEP 1. Check the rear wiper.

Q: Does the rear wiper motor operate (however, the rear wiper does not stop at the predetermined park position)?

YES: Go to Step 2.

NO: Refer to Inspection Procedure G-1 "Rear wiper does not work at all."




STEP 2. Check the rear wiper motor.

1. Disconnect rear wiper motor connector F-05.
2. While the rear wiper motor is running, disconnect the battery to stop the motor.
3. When the battery is connected as shown, the motor should run again and stop at the predetermined park position.

Q: Does the rear wiper motor operate normally?

YES: Go to Step 3.

NO: Replace the rear wiper motor. If the rear wiper operates normally, it indicates that a correct auto-stop signal is sent from the rear wiper motor.




STEP 3. Measure at rear wiper motor connector F-05 by backprobing to check the ignition switch (ACC) line of the power supply to the rear wiper motor.

1. Do not disconnect rear wiper motor connector F-05.
2. Turn the ignition switch to the "ACC" position.
3. Measure the voltage between terminal 4 and ground by backprobing.
- The measured value should be approximately 12 volts (battery positive voltage).

Q: Does the measured voltage correspond with this range?

YES: Go to Step 6.

NO: Go to Step 4.




STEP 4. Check rear wiper motor connector F-05 for damage.

Q: Is rear wiper motor connector F-05 in good condition?

YES: Go to Step 5.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. If the rear wiper operates normally, it indicates that a correct auto-stop signal is sent from the rear wiper motor.







STEP 5. Check the wiring harness between rear wiper motor connector F-05 and the ignition switch (ACC).

NOTE: Also check junction block connectors C-211 and C-217. If junction block connector C-211 or C-217 is damaged, repair or replace the connector as described in Harness Connector Inspection.

Q: Is the wiring harness between rear wiper motor connector F-05 and the ignition switch (ACC) in good condition?

YES: No action to be taken.

NO: Repair the wiring harness. If the rear wiper operates normally, it indicates that a correct auto-stop signal is sent from the rear wiper motor.







STEP 6. Check rear wiper motor connector F-05 and ETACS-ECU connector C-226 for damage.

Q: Are rear wiper motor connector F-05 and ETACS-ECU connector C-226 in good condition?

YES: Go to Step 7.

NO: Repair or replace the connector. Refer to Harness Connector Inspection. If the rear wiper operates normally, it indicates that a correct auto-stop signal is sent from the rear wiper motor.










STEP 7. Check the wiring harness between rear wiper motor connector F-05 and ETACS-ECU connector C-226.

NOTE: Also check junction block connector C-217. If junction block connector C-217 is damaged, repair or replace the connector as described in Harness Connector Inspection.

Q: Is the wiring harness between rear wiper motor connector F-05 and ETACS-ECU connector C-226 in good condition?

YES: Replace the ETACS-ECU. If the rear wiper operates normally, it indicates that a correct auto-stop signal is sent from the rear wiper motor.

NO: Repair the wiring harness. If the rear wiper operates normally, it indicates that a correct auto-stop signal is sent from the rear wiper motor.