Montero LTD 4WD V6-3.5L SOHC (2002)
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. When the rear wiper switch is operated (when the rear wiper started moving), 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 R-8 "ETACS-ECU does not receive an automatic stop signal from the wiper motor."
Inspection Procedure H-3
Rear Wiper and Washer: When the Selector Lever is Moved to "R" Position during the Rear Wiper Operation, the Rear Wiper does not
Operate at the Continuous Mode.
"R" Position During Rear Wiper Operation Circuit
CIRCUIT OPERATION
The ETACS-ECU operates the rear wiper consecutively approximately twice when the selector lever is moved to "R" position while the rear wiper is
turned on.
