Lancer L4-2.4L SOHC (2005)
1. Connect scan tool MB991958 to the data link connector.
2. Use the driver's door lock key cylinder to lock and unlock the doors.
3. Operate the MUT-II according to the procedure below to display "PULSE CHECK.
a. Select "SYSTEM SELECT."
b. Select "SWS.
c. Select "PULSE CHECK.
4. Check scan tool MB991958 sounds or not.
Q: When the doors are locked and unlocked by using the driver's door lock key cylinder, does scan tool MB991958 sound?
YES: Replace the ETACS-ECU. All the doors should be locked and unlocked by using driver's door lock key cylinder switch.
NO: Refer to Inspection Procedure N-5 "ETACS-ECU does not receive a signal from the driver's door lock key cylinder switch.
Inspection Procedure D-1
Power Windows: Power windows do not work at all.
