Lancer Sportback L4-2.4L (4B12) (2010)
![background image](/mitsubishi/lancer_sportback/l4-2.4l_(4b12)/Page-1474007.png)
DIAGNOSIS
Required Special Tools:
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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. Front dome light operation check
Check that the front dome light illuminates and extinguishes normally.
Q: Does rear dome light work normally?
YES : Go to Step 2.
NO : Replace the ETACS-ECU.
STEP 2. 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.
1. Connect scan tool MB991958. Refer to "How to connect scan too (M.U.T.-III)." See: Reading and Clearing Diagnostic Trouble Codes/How to
Connect the Scan Tool (M.U.T.-III)
2. Turn the ignition switch to the "ON" position.
3. Check whether the ETACS-ECU related DTC is set.
4. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?
YES : Diagnose the ETACS-ECU. Refer to ETACS, Diagnosis. See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Diagnostic Trouble Code Descriptions/ETACS
NO : Go to Step 3.
STEP 3. Check whether the rear dome light illuminates.
When the rear dome light switch is turned to the "DOOR" or "ON" position, check that the rear dome light illuminates.
Q: Does the rear dome light illuminate?