Lancer Evolution L4-2.0L Turbo (4B11T/C) (2010)
Relearning
STEP 2. Using scan tool MB991958, read the ETACS-ECU diagnostic trouble code.
Check if DTC is set to the ETACS-ECU.
1. Turn the ignition switch to the "ON" position.
2. Check whether the ETACS-ECU DTC is set.
3. 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. Using scan tool MB991958, check data list.
Use the ETACS-ECU data list to check the signals related to the interior light auto-cut function.
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Turn the ignition switch to the "LOCK" (OFF) position.
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Open each door.
Q: Does scan tool MB991958 display the items "IG voltage", "ACC switch", "Dr door ajar switch", "As door ajar switch", "RR door ajar switch", and
"RL door ajar switch" as normal condition?
YES : (Normal conditions are displayed for all items.) Go to Step 4.
NO : (Normal condition is not displayed.) Troubleshoot the ETACS-ECU. Refer to ETACS, Diagnosis, Input signal chart. See: Body and
Frame/Body Control Systems/Body Control Module/Testing and Inspection/Scan Tool Testing and Procedures/Trouble Symptom Chart For Input
Signal
STEP 4. Retest the system.
Check that the interior light automatic shutdown function works normally.
Q: Is the check result normal?
YES : The trouble can be an intermittent malfunction.
NO : Replace the ETACS-ECU.
Trouble Symptom Chart
TROUBLE SYMPTOM CHART