Lexus IS250 IS220d GSE20 ALE20 - THEFT DETERRENT

THEFT DETERRENT SYSTEM (w/ Intrusion Sensor) - Horn Circuit

DESCRIPTION

When the theft deterrent system is switched from the armed state to the alarm sounding state, the main body ECU RH transmits a signal to cause the horn to sound at intervals of 0.4 seconds.

WIRING DIAGRAM

Theft Deterrent System (W/ Intrusion Sensor) - Horn Circuit. THEFT DETERRENT. Lexus IS250 IS220d GSE20 ALE20

INSPECTION PROCEDURE

1.INSPECT HORN

Inspect horn operation.

Press the horn switch and check if the horns sound.

Result:
Result Go to
Horns sound A
Horns do not sound B

GO TO HORN SYSTEM

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

Result	Go to
Horns sound	A
Horns do not sound	B