Montero XLS 4WD V6-3.5L SOHC (2001)
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Turn-signal light
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Fog light
If the signal fails, these devices will not work normally.
TROUBLESHOOTING HINTS
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Malfunction of the column switch (turn-signal light and lighting 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 the ignition switch positions.
Q: Does a diagnostic trouble code set when the ignition switch is at any of the positions?
YES: Carry out the troubleshooting by referring to the Diagnostic Trouble Code Chart.
NO: Go to Step 2.
STEP 2. Replacement of ECU
1. Replace the column switch (turn-signal light and lighting switch).
2. The input signal from the column switch (turn-signal light and lighting switch) should be able to be checked and the functions, which are described
in the "Technical Description (comment)," should work normally.
Q: Is the input signal from the column switch (turn-signal light and lighting switch) input normally?
YES: There is no action to be taken.
NO: Replace the ETACS-ECU. The input signal from the column switch (turn-signal light and lighting switch) should be able to be checked
and the functions, which are described in the Technical Description (comment)," should work normally.
Inspection Procedure Q-15
Column switch: The windshield mist wiper switch, windshield intermittent wiper switch, windshield low-speed wiper switch, windshield
high-speed wiper switch, windshield washer switch, rear wiper switch or rear washer switch signal is not sent to the ETACS-ECU
Column Switch (Windshield Wiper And Washer Switch) Input Circuit
CIRCUIT OPERATION
The ETACS-ECU uses the input signal from the column switch (windshield wiper and washer switch) to operate various functions.