Security Indicator Light Circuit

THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM: Security Indicator Light Circuit
- Security Indicator Light Circuit

DESCRIPTION

Even when the theft deterrent system is in the disarmed state, the security indicator light blinks due to a signal output from the immobiliser system. The security indicator light blinks continuously due to a continuous signal received from the immobiliser system while in the armed state.

The main body ECU (multiplex network body ECU) causes the security indicator light to come on only during the arming preparation and alarm sounding states.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Select the item below in the Active Test and then check that the indicator operates.

Main Body (Main Body ECU (Multiplex Network Body ECU))





OK:

The security indicator light flashes and goes off correctly when operated through the Techstream.

NG -- INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Theft Deterrent System

2. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

(a) Disconnect the 2A instrument panel junction block assembly and A main body ECU (multiplex network body ECU) connectors.





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

Standard Resistance:





Text in Illustration





NG -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - INTEGRATION CONTROL AND PANEL ASSEMBLY)

(a) Reconnect the 2A instrument panel junction block assembly and A main body ECU (multiplex network body ECU) connectors.

(b) Disconnect the F57*1 or F59*2 integration control and panel assembly connector.

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

Standard Voltage:





* *1: w/ Navigation System

* *2: w/o Navigation System

NG -- CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL AND PANEL - INSTRUMENT PANEL J/B)
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL AND PANEL ASSEMBLY - BODY GROUND)

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

Standard Resistance:





* *1: w/ Navigation System

* *2: w/o Navigation System

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY Removal

5. CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL AND PANEL - INSTRUMENT PANEL J/B)

(a) Disconnect the 2A instrument panel junction block assembly connector.

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

Standard Resistance:





* *1: w/ Navigation System

* *2: w/o Navigation System

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Removal