Lancer L4-2.4L SOHC (2005)
Front Door Switches Input Circuit Part 2
CIRCUIT OPERATION
The ETACS-ECU operates the following functions or systems according to signal from the driver's or front passenger's door switches:
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Ignition key reminder tone alarm function
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Light reminder tone alarm function
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Power window timer function
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Headlight automatic shutdown function
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Dome light
TECHNICAL DESCRIPTION (COMMENT)
If the signal is not normal, the functions or systems, which are described in "CIRCUIT OPERATION", do not work normally. If the signal is not normal,
the driver's or front passenger's door switch or the ETACS-ECU may be defective.
TROUBLESHOOTING HINTS
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The driver's or front passenger's door switches 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
STEP 1. Check the input signal (by using the pulse check mode of the monitor).
Check the input signals from the front door switches.
CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or
disconnecting scan tool MB991958.
