Eclipse RS L4-2350cc 2.4L SOHC MFI (2002)
Check the input signal (by using the Pulse check).
Check the input signals from the driver's or front passenger's door lock actuator switch.
CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or
disconnecting scan tool MB991502.
1. Connect scan tool MB991502 to the data link connector.
2. When the driver's inside lock knob is locked or unlocked, check if scan tool MB991502 sounds or not.
Q: Does scan tool MB991502 sound when the driver's or the front passenger's inside lock knob is moved from "LOCK" to "UNLOCK" or vice
versa?
YES: Replace the ETACS-ECU. Check that all the doors can be locked or unlocked by operating the driver's inside lock knob.
NO: Refer to Inspection Procedure P-5 "ETACS-ECU does not receive a signal from the driver's or front passenger's door lock actuator switch
."
Inspection Procedure C-6
Central Door Locking System: Forgotten Key Prevention Function does not Work Normally.
NOTE: This troubleshooting requires use of scan tool MB991502 and SWS monitor kit MB991862. For details of bow to use the SWS monitor, refer
to "How to use SWS monitor."
Forgotten Key Prevention Function Circuit
CIRCUIT OPERATION
The ETACS-ECU operates the forgotten key prevention function according to the following switches:
