Montero V6-3.8L SOHC (2005)
Forgotten Key Prevention Circuit
CIRCUIT OPERATION
The ETACS-ECU operates the forgotten key prevention function according to the following switches:
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Key reminder switch: OFF
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Driver's or front passenger's door switch: ON
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Driver's door lock actuator switch: being turned ON
The ETACS-ECU activates the forgotten key prevention function under the following conditions:
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Ignition key: inserted into the ignition key cylinder
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Driver's or front passenger's door: open
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Driver's or front passenger's door lock: being locked electrically
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Driver's door lock: being locked manually
TECHNICAL DESCRIPTION (COMMENT)
If the forgotten key prevention function does not work normally, the input circuit from the switches or the ETACS-ECU may be defective.
TROUBLESHOOTING HINTS
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The key reminder switch may be defective
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The driver's or front passenger's door switch may be defective
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The driver's door lock actuator switch may be defective
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The ETACS-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
