Montero V6-3.8L SOHC (2005)
Headlight Automatic Shut-down Function
CIRCUIT OPERATION
The ETACS-ECU operates the headlight automatic shutdown function according to the following signals:
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Ignition switch (IG1)
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Driver's door switch
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Taillight switch
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Headlight switch
TECHNICAL DESCRIPTION (COMMENT)
If the function does not work normally, the input circuit system from the switches, the ETACS-ECU or the front-ECU may be defective (refer to
"CIRCUIT OPERATION").
TROUBLESHOOTING HINTS
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The driver's door switch may be defective
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The column switch (lighting and turn-signal switch) may be defective
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The ETACS-ECU may be defective
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The front-ECU may be defective
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The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector
DIAGNOSIS
Required Special Tools:
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MB991223: Harness Set
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MB991958: Scan Tool (MUT-III Sub Assembly)
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MB991824: Vehicle Communication Interface (V.C.I.)
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MB991827: MUT-III USB Cable
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MB991911: MUT-III Main Harness B
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MB991813: SWS Monitor Kit
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MB991806: SWS Monitor Cartridge
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MB991812: SWS Monitor Harness (For Column-ECU)
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MB991822: Probe Harness
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MB991854: SWS Monitor Harness (For 13-pin)
STEP 1. Verify the configuration function operation.
Q: Has the headlight automatic shutdown function been enabled by means of the adjustment function?
YES: Go to Step 2.
