Security Indicator Light Circuit

THEFT DETERRENT: THEFT DETERRENT SYSTEM (w/ Smart Key System): Security Indicator Light Circuit
- Security Indicator Light Circuit

DESCRIPTION

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 certification ECU causes the security indicator to light up or blink only during the arming preparation state and alarm sounding states.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT CLOCK ASSEMBLY

(a) Disconnect the F3 clock connector.





(b) Apply battery voltage between the terminals of the indicator, and check the lighting condition of the security indicator.

Standard:





NOTICE:
* If the positive (+) lead and the negative (-) lead are incorrectly connected, the security indicator will not light up.
* Voltage of more than 12 V will damage the security indicator.
* If the voltage is too low, the security indicator will not light up.
NG -- REPLACE CLOCK ASSEMBLY
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (CLOCK ASSEMBLY - CERTIFICATION ECU)

(a) Disconnect the E58 ECU connector.





(b) Disconnect the F3 clock connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (CLOCK ASSEMBLY - BODY GROUND)

(a) Measure the resistance according to the value(s) in the table below.





Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE