Security Horn Assembly - Installation
Connect the connector.
Security Horn Assembly - Inspection
Check operation of the horn.
- Standard:
Measurement Condition Specified Condition Battery positive (+) → Terminal 1 Horn sounds Battery negative (-) → Horn body
If the result is not as specified, replace the security horn assembly.
Security Horn Assembly - Removal
Remove the bolt and disconnect the security horn assembly.
Security Horn Assembly - Components
Lexus IS250 IS220d GSE20 ALE20 THEFT DETERRENT
Engine Hood Courtesy Switch - Installation
Apply MP grease to the sliding areas of the lock.
Engine Hood Courtesy Switch - Inspection
Measure the resistance according to the value(s) in the table below.
Engine Hood Courtesy Switch - Removal
Using a clip remover, remove the 11 clips and cool air intake duct seal.
Engine Hood Courtesy Switch - Components
Lexus IS250 IS220d GSE20 ALE20 THEFT DETERRENT
Theft Deterrent System (W/O Intrusion Sensor) - Ecu Power Source Circuit
This circuit provides power for main body ECU RH operation.
Theft Deterrent System (W/O Intrusion Sensor) - Security Indicator Light Circuit
Even when the theft deterrent system is in the disarmed state, the security indicator blinks due to a signal output from the immobiliser system. The security indicator blinks continuously due to a continuous signal received from the immobiliser system while in the armed state.
The main body ECU RH causes the security indicator to light up or blink only during the arming preparation state and alarm sounding state.