mitsubishi Workshop Repair Guides

Mitsubishi Workshop Service and Repair Manuals

Initial Inspection and Diagnostic Overview|Page 2252 > < Initial Inspection and Diagnostic Overview|Page 2250
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Connectors

CIRCUIT OPERATION

The ETACS-ECU operates the horns through the keyless entry system answerback or the theft-alarm system if the requirements for the horns are
satisfied.

TECHNICAL DESCRIPTION (COMMENT)

The turn-signal light and the horn answerback functions can be selected by the driver's desire (can be deactivated). However, the dome light answerback
function can not be deactivated. If all of these devices do not operate through the answerback function, the ETACS-ECU may be defective.

TROUBLESHOOTING HINTS

-

Malfunction of the turn-signal light

-

Malfunction of the horn

-

Malfunction of the dome light

-

Malfunction of the ETACS-ECU

-

Damaged harness wires or connectors

DIAGNOSIS

Required Special Tools:
MB991223: Test Harness Set
MB991502: Scan Tool (MUT-II)
MB991529: Diagnostic Trouble Code Check Harness

STEP 1. Check the answerback set condition.

Activate the answerback functions. (Refer to Keyless Entry System - On-vehicle Service - Enabling/disabling the Answerback Function.)
The answerback function should work normally.
When the answerback does not work normally although the answerback function is activated, go to Step 2.

STEP 2. Check trouble symptom.

Initial Inspection and Diagnostic Overview|Page 2252 > < Initial Inspection and Diagnostic Overview|Page 2250