DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT HORN
THEFT DETERRENT SYSTEM (w/o 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
INSPECTION PROCEDURE
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 |
| A | |
| |
| PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE |
|
LEXUS IS250, IS220d / GSE20 ALE20