Lancer LS L4-2.0L SOHC (2002)
Door Indicator Light Circuit
NOTE: This troubleshooting requires use of scan tool MB991502 and SWS monitor kit MB991862. For details of how to use the SWS monitor, refer
to "How to use SWS monitor".
CIRCUIT OPERATION
The ETACS-ECU operates the door ajar indicator light according to the following switch signals:
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Front door switch
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All door switches
TECHNICAL DESCRIPTION (COMMENT)
If the door ajar indicator light does not illuminate normally, the input circuit system from the switches or the ETACS-ECU may be defective (refer to
"CIRCUIT OPERATION").
TROUBLESHOOTING HINTS
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Malfunction of the door switch
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Malfunction of the ETACS-ECU
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Damaged harness wires or connectors
DIAGNOSIS
Required Special Tools:
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MB991223: Test Harness Set
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MB991502: Scan Tool (MUT-II)
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MB991862: SWS monitor kit
STEP 1. Check the dome light and the rear dome light.
If the dome light switch and the rear dome light switch are moved to the "door interlock position", the dome light and the rear dome light should
illuminate when either door is opened.
Q: Do the dome light and the rear dome light illuminate normally?
Both the dome light and the rear dome light illuminate normally. : Go to Step 2.
Neither the dome light nor the rear dome light illuminates normally.: Refer to Inspection Procedure K-1 "Dome light, rear dome light and luggage
compartment light do not illuminate or go out normally."