Galant ES V6-3.0L SOHC (2000)
Connectors
CIRCUIT OPERATION
The ETACS-ECU will sound the theft-alarm horn if the theft-alarm system or the keyless entry system answerback is triggered.
TECHNICAL DESCRIPTION (COMMENT)
The theft-alarm horn is shared by the keyless entry system. If the horn sounds normally through the keyless entry system answerback, the ETACS-ECU
may be defective.
TROUBLESHOOTING HINTS
-
Malfunction of the theft-alarm horn
-
Malfunction of the theft-alarm horn relay
-
Malfunction of the ETACS-ECU
-
Damaged harness wires or connectors
DIAGNOSIS
Required Special Tool:
MB991223: Test Harness Set
STEP 1. Check the keyless entry system horn answerback.
Activate the keyless entry system horn answerback. (Refer to Keyless Entry System - On-vehicle Service - Enabling/disabling the Answerback Function.)
If the horn answerback function does not work, go to Step 2.
If the horn answerback function works, replace the ETACS-ECU.
The horn should sound when the theft-alarm system is triggered.