Montero XLS 4WD V6-3.5L SOHC (2001)
TECHNICAL DESCRIPTION (COMMENT)
The ETACS-ECU operates the power window timer function, based on input signals from the following switches:
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Ignition switch (IG1)
-
Driver's or front passenger's door switch
If the power window timer function do not work normally, the input signal circuit or the ETACS-ECU may be defective.
TROUBLESHOOTING HINTS
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Malfunction of the driver's or front passenger's door switch
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Malfunction of the ETACS-ECU
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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 (IG1)
-
Driver's and front passenger's door 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.
1. Connect scan tool MB991502 to the data link connector.
2. Check that the tone alarm of scan tool MB991502 sounds when the input signal enters.
Q: Does the tone alarm of scan tool MB991502 sound when the input signal enters?
YES: Replace the ETACS-ECU. The power window timer function should work normally.
NO: Check the relevant input circuit.
STEP 3. Check the input signal (by using a voltmeter). Check the input signals from the following switches:
-
Ignition switch (IG1)
-
Driver's and front passenger's door switch
