Lancer L4-2.0L SOHC (2004)
3. Select "PULSE CHECK."
3. Check scan tool MB991958 sounds or not.
4. If the switches (see table), which are applicable for the input signal check, are operated.
Q: When the key reminder switch and the hazard warning light switch are operated, does scan tool MB991958 sound in each case?
Buzzer of scan tool MB991958 sounds normally : Replace the ETACS-ECU. Verify that the encrypted code can be registered in the transmitter.
Scan tool MB991958 does not sound when the ignition key is removed and reinserted : Refer to Inspection Procedure O-1 "ETACS-ECU
does not receive a signal from the key reminder switch."
Scan tool MB991958 does not sound when the hazard warning light switch is turned from "OFF" to "ON" : Refer to Inspection Procedure
O-2 "ETACS-ECU does not receive a signal from the hazard warning light switch."
STEP 3. Check the transmitter.
Q: When the transmitter's battery is replaced, can the encrypted code be registered?
YES: No action is necessary and testing is complete.
NO: Replace the transmitter. If the encrypted code can not be registered by means of the new transmitter, replace the ETACS-ECU. Verify that the
encrypted code can be registered in the transmitter.
Inspection Procedure F-1
Sunroof: Sunroof does not operate.