Lancer LS L4-2.0L SOHC (2002)
Connectors
CIRCUIT OPERATION
The ETACS-ECU operates the following functions or systems according to signal from the driver's or front passenger's, rear or back door switches:
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Light reminder tone alarm function <Driver's door switch>
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Power window timer function <Driver's, front passenger's door switch>
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Headlight automatic shutdown function <Driver's door switch>
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Keyless entry system <All door switches>
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Dome light <All door switches>
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, front passenger's, rear or back door switch or the ETACS-ECU may be defective.
TROUBLESHOOTING HINTS
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Malfunction of the driver's, front passenger's, rear or back 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)
STEP 1. Check which door switch is defective.
Q: Which door switch signal is not entered?
Driver's or front passenger's door : Refer to Inspection Procedure L-4 "ETACS-ECU does not receive a signal from the driver's or the front passenger's
door switch."
Rear door (LH): Go to Step 2.
Rear door (RH): Go to Step 6.