FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM
:
Car repair manuals for everyone.
Home
>>
Lexus
>>
2007
>>
IS 250 RWD V6-2.5L (4GR-FSE)
>>
Repair and Diagnosis
>>
Accessories and Optional Equipment
>>
Antitheft and Alarm Systems
>>
Alarm Horn
>>
Testing and Inspection
>>
Security Horn Circuit
Security Horn Circuit
Security Horn Circuit
DESCRIPTION
When the theft deterrent system is operating, the relay in the main body ECU RH turns on and off, causing the security horn to sound.
Wiring Diagram:
Step 1:
Step 2:
INSPECTION PROCEDURE