Inspection Procedure O-5

INSPECTION PROCEDURE O-5: Theft-alarm System: Panic alarm function does not work.






TECHNICAL DESCRIPTION (COMMENT)

If the keyless entry system is normal, the ETACS-ECU may be defective.

TROUBLESHOOTING HINTS

- The ETACS-ECU may be defective
- The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector

DIAGNOSIS

Required Special Tools:

- MB991223: Harness Set
- MB992006: Extra Fine Probe
- MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: V.C.I.
- MB991827: M.U.T.-III USB Cable
- MB991911: M.U.T.-III Main Harness B

STEP 1. Check the keyless entry system.

Q. Does the keyless entry system work normally?

YES Go to Step 2.
NO Refer to Inspection Procedure E-1 "Keyless entry system does not operate Inspection Procedure E-1."
STEP 2. Check the input signal (by using the pulse check mode of the monitor).

Check the input signals from the transmitter "PANIC" switch:





(1)
CAUTION:
To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.

Connect the special tool. Refer to "How to connect SWS monitor How to Connect SWS Monitor."
(2)Operate scan tool MB991958 according to the procedure below to display "Pulse check."

.....Select "Interactive Diagnosis."

.....Select "System select."

.....Select "SWS."

.....Select "Pulse Checking."
(3)Check that scan tool MB991958 sounds.

Q. Does scan tool MB991958 sound when the transmitter "PANIC" button is pressed?

YES Replace the ETACS-ECU. When the ETACS-ECU is replaced, register the encrypted code. Encrypted Code Registration Criteria Table.
Verify that the panic alarm works normally.

NO Refer to Inspection Procedure N-7 "ETACS-ECU does not receive any signal from the lock, unlock, liftgate [ECLIPSE], trunk lid [ECLIPSE SPYDER] or panic switch Inspection Procedure N-7.