mitsubishi Workshop Repair Guides

Mitsubishi Workshop Service and Repair Manuals

Initial Inspection and Diagnostic Overview|Page 2939 > < Initial Inspection and Diagnostic Overview|Page 2937
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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.

Initial Inspection and Diagnostic Overview|Page 2939 > < Initial Inspection and Diagnostic Overview|Page 2937