Montero Sport LS 2WD V6-3.0L SOHC (1998)
Ignition Switch: Description and Operation
Procedures -- 3
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The ETACS-ECU or tone alarm-ECU monitors the ignition switch by detecting voltage from the ignition switch.
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The ETACS-ECU or tone alarm-ECU judges that the driver's side door is opened or closed by detecting voltage from the front door switch (LH).
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The ETACS-ECU or tone alarm-ECU judges that the ignition key is inserted or removed by detecting voltage from the key reminder switch.
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When the driver's door is opened without removing the ignition key, the tone alarm will sound intermittently to remind that the ignition key has not
been removed.
