Lancer L4-2.4L SOHC (2005)
The ETACS-ECU operates the dome light according to the following signals:
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Ignition switch (IG1)
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Key reminder switch
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Door switch (front: LH)
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All door switches
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Door lock actuator switch (front: LH)
TECHNICAL DESCRIPTION (COMMENT)
Is the dome light does not flash normally, a burned-out dome light bulb, the input circuits from the switches described in "CIRCUIT OPERATION", the
power supply line to the switches or the ETACS-ECU may be defective. Alternatively, the delay-off function may be set to "0 second" by using the
configuration function.
TROUBLESHOOTING HINTS
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The key reminder switch may be defective
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The door switch may be defective
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The driver's door lock actuator switch may be defective
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The dome light 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. Verify which of the front dome light, the rear dome light <vehicles without sunroof> or the luggage compartment light does not
illuminate normally.
Q: Which of the front dome light, the rear dome light <vehicles without sunroof> or the luggage compartment light fail to illuminate normally?
Front dome light does not illuminate normally : Go to Step 2.
rear dome Light <vehicles without sunroof> : Go to Step 8.
luggage compartment light : Go to Step 14.
STEP 2. Check front dome light connectors D-05 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q: Is front dome light connector D-05 in good condition?
YES: Go to Step 3.
NO: Repair or replace the damaged component(s). Refer to Harness Connector Inspection. Verify that the front dome light illuminates normally.
STEP 3. Verify the front dome light bulb.
Q: Is the front dome light bulb in good condition?
