Problem Symptoms Table

Proceed to the reference page shown in the matrix chart below for each malfunction symptom and trouble-

shoot for each circuit.

HINT:

Troubleshooting of the theft deterrent system is based on the premise that the door lock control system is operating normally. Accordingly, before troubleshooting the theft deterrent system, first make certain that the door lock control system is operating normally.

Details of Problem

Inspecting Circuit*1

See page

The theft deterrent system cannot be set

1. Indicator light circuit

DI-533

2. ECU power source circuit

DI-535

3. Key unlock warning switch circuit

DI-549

4. Back door key lock and unlock switch circuit

DI-553

5. Back door courtesy switch circuit

DI-551

6. Door key lock and unlock switch circuit

DI-553

7. Door courtesy switch circuit

DI-557

8. Door unlock detection switch circuit

DI-555

9. Engine hood courtesy switch circuit

DI-559

The indicator light does not blink when system is set

Indicator light circuit

DI-533

When the system is set

When the side doors are unlocked

The system does not operate

Door unlock detection switch circuit

DI-555

When the back door is opened by a method other than the key

Back door courtesy switch circuit

DI-551

When the engine hood is opened

Engine hood courtesy switch circuit

DI-559

While the system is in warning operation

Horns do not sound

Horn relay circuit

DI-541

Theft deterrent horn does not sound

Theft deterrent horn circuit

DI-538

Headlights do not flash

Headlight control relay circuit

DI-543

Taillights do not flash

Taillight control relay circuit

DI-545

The door is not locked in unlock condition

Door unlock detection switch circuit

DI-555

When the system is set

It is not canceled when the ignition key is turned to ACC or ON position

Ignition switch circuit

DI-547

It still operates when the back door is opened with the key

Back door key lock and unlock switch circuit

DI-553

System is still set even when a side door is open

Door courtesy switch circuit

DI-557

Even when the system is not set

Horns sound

Horn relay circuit

DI-541

Theft deterrent horn sounds

Theft deterrent horn circuit

DI-538

Headlights stay on

Headlight control relay circuit

DI-543

Taillights stay on

Taillight control relay circuit

DI-545

*1: If numbers are given to the circuit proceed with troubleshooting in the order indicated by those numbers.

_DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM_

DI164-28

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