Lancer Sportback L4-2.4L (4B12) (2010)
Ignition Key Cylinder Illumination Light Circuit [Vehicles with WCM] (Part 2)
OPERATION
The ETACS-ECU operates this function in accordance with the input signals below.
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Ignition switch (IG1)
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Key reminder switch
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Driver's door switch
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Driver's door lock actuator
TECHNICAL DESCRIPTION (COMMENT)
If this function does not work normally, these input signal circuit(s), the ignition key cylinder illumination light or the ETACS-ECU may be defective.
TROUBLESHOOTING HINTS
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The key reminder switch may be defective
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The driver's door switch may be defective
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The driver's door lock actuator may be defective
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The ignition key cylinder illumination light bulb 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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MB992006: Extra fine probe
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MB991223: Harness set
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MB991958: Scan Tool (M.U.T.-III Sub Assembly)
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MB991824: Vehicle Communication Interface (V.C.I.)
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MB991827: M.U.T.-III USB Cable
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MB991910: M.U.T.-III Main Harness (Vehicles with CAN communication system)
STEP 1. Using scan tool MB991958, read the diagnostic trouble code.
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.