Security Indicator Light Circuit

THEFT DETERRENT: THEFT DETERRENT SYSTEM: Security Indicator Light Circuit
- Security Indicator Light Circuit

DESCRIPTION

* When the theft deterrent system is in the disarmed state, the security indicator will flash continuously if the immobilizer system is set, or not illuminate if the immobilizer system is not set.

When the theft deterrent system is in the armed state, the immobilizer system is automatically set and the security indicator will flash continuously.

When the theft deterrent system is in the arming preparation state and alarm sounding state, the cowl side junction block RH (multiplex network body ECU) causes the security indicator to be illuminated.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM (SECURITY INDICATOR)

(a) Select the Active Test, use the Techstream to generate a control command, and then check that the indicator illuminates.

Main Body





OK:

Security indicator illuminates.

NG -- CHECK WIRE HARNESS (MULTI-DISPLAY - COWL SIDE JUNCTION BLOCK RH (MULTIPLEX NETWORK BODY ECU))

OK -- REPLACE COWL SIDE JUNCTION BLOCK RH (MULTIPLEX NETWORK BODY ECU)

2. CHECK WIRE HARNESS (MULTI-DISPLAY - COWL SIDE JUNCTION BLOCK RH (MULTIPLEX NETWORK BODY ECU))

(a) Disconnect the K99 multi-display connector.

(b) Disconnect the K67 ECU connector.

(c) Measure the resistance of the wire harness side connectors.

Standard resistance:





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

3. CHECK OPERATION OF MULTI-DISPLAY

(a) Temporarily replace the multi-display with a new or normally functioning multi-display.

(b) Check the security indicator operation.

OK:

Security indicator operates normally.

NG -- REPLACE COWL SIDE JUNCTION BLOCK RH (MULTIPLEX NETWORK BODY ECU)

OK -- END (MULTI-DISPLAY IS FAULTY)