Eclipse V6-3.0L SOHC (2003)
4. Check the 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 how 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:
-
Key reminder switch: OFF
-
Driver's or front passenger's door switch: ON
-
Driver's or front passenger's door lock actuator switch: being turned on
The ETACS-ECU operates the forgotten key prevention function under the following conditions:
-
Ignition key: inserted into the ignition key cylinder
-
Driver's or front passenger's door: open
-
Driver's or front passenger's door lock: being locked
TECHNICAL DESCRIPTION (COMMENT)
If the function does not work normally, the input circuit system from the switches or the ETACS-ECU may be defective (refer to "CIRCUIT
OPERATION").
TROUBLESHOOTING HINTS
-
Malfunction of the key reminder switch
-
Malfunction of the driver's or front passenger's door switch
-
Malfunction of the driver's or front passenger's door lock actuator switch
-
Malfunction of the ETACS-ECU
-
Damaged harness wires or connectors