Inspection Procedure E-1: Keyless Entry System: Keyless Entry System Does Not Operate: Diagnosis
- Check The Central Door Locking System -
Does the central door locking system work normally?
- YES : Go to Step 2.
- NO : Refer to INSPECTION PROCEDURE C-1: CENTRAL DOOR LOCKING SYSTEM: THE CENTRAL DOOR LOCK SYSTEM DOES NOT WORK AT ALL .
- Check The Input Signal (By Using The Pulse Check) -
Check input signals from the transmitter.
- Connect scan tool MB991502 to the data link connector. See Figure.
- When the transmitter LOCK or UNLOCK switch is turned ON, check that scan tool MB991502 sounds.
- YES : Replace the ETACS-ECU. All the doors can be locked or unlocked by means of the transmitter.
- NO : Refer to INSPECTION PROCEDURE P-13: TRANSMITTER: ETACS-ECU DOES NOT RECEIVE ANY SIGNAL FROM LOCK, UNLOCK, PANIC OR TRUNK 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.