Inspection Procedure H-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)

Check the input signal (by using the Pulse Check).
Check the automatic stop signal, which the rear wiper motor sends to the ETACS-ECU.

NOTE: When the rear wiper is operated, a signal is sent to the ETACS-ECU.

CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502.




1. Connect scan tool MB991502 to the data link connector.
2. Operate the MUT-II according to the procedure below to display "PULSE CHECK."
1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "PULSE CHECK."
3. Check that scan tool MB991502 sounds.

Q: Does scan tool MB991502 sound when the rear wiper switch is operated?

YES: Replace the ETACS-ECU. The rear wiper should stop automatically at the predetermined park position.

NO: Refer to Inspection Procedure P-7 "ETACS-ECU does not receive an automatic stop signal from the wiper motor."