Montero XLS 4WD V6-3.5L SOHC (2001)
Connectors
CIRCUIT OPERATION
A signal from the rear wiper switch is sent through the column-ECU inside the column switch to the ETACS-ECU. The signal turns on the relay inside
the ETACS-ECU to operate the rear wiper motor.
TECHNICAL DESCRIPTION (COMMENT)
The ETACS-ECU operates the rear wiper according to the input signals from the following switches:
-
Ignition switch (ACC)
-
Rear wiper switch
If the rear wiper does not work normally, the relevant input signal circuit, the rear wiper motor, the column switch (windshield wiper and washer
switch) or the ETACS-ECU may be defective.
TROUBLESHOOTING HINTS
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Malfunction of the rear wiper motor
-
Malfunction of the column switch (windshield wiper and windshield washer switch)
-
Malfunction of the ETACS-ECU
-
Damaged harness wires or connectors
DIAGNOSIS
Required Special Tools:
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MB991223: Test Harness Set
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MB991502: Scan Tool (MUT-II)
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MB991529: Diagnostic Trouble Code Check Harness
STEP 1. Check method of the input signal
Q: Which is to be used, the scan tool or the voltmeter to check the input signal?
Scan tool MB991502: Go to Step 2.
Voltmeter: Go to Step 3.
STEP 2. Check the input signal (by using scan tool MB991502).
Check the input signals from the following switches:
-
Ignition switch (ACC)
-
Rear wiper switch
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.