THEFT DETERRENT SYSTEM > Security Indicator Light Circuit

for Preparation Click here


DESCRIPTION

The security indicator light comes on or blinks in response to signals received from the main body ECU.

WIRING DIAGRAM


B214212E01


INSPECTION PROCEDURE

1.PERFORM ACTIVE TEST USING INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the intelligent tester on.

  1. Enter the following menus: Body Electrical / Main Body / Active Test

  1. According to the display on the tester, perform the Active Test.

    Main Body 
    Tester Display
    		Test Part
    		Control Range
    		Diagnostic Note
    Security Indicator
    		Security indicator light
    		ON/OFF
    		-

    OK:
    The security indicator light blinks or goes off correctly when operating it through the intelligent tester.



NG
Go to step 2
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)  

2.CHECK HARNESS AND CONNECTOR (COMBINATION METER - INSTRUMENT PANEL J/B AND BODY GROUND)


    B214213E01

  1. Disconnect the D1 combination meter connector.

  1. Disconnect the 3C instrument panel junction block connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    D1-15 (LP) - 3C-17
    		Always
    		Below 1 Ω
    D1-24 (ET) - Body ground
    		Always
    		Below 1 Ω
    D1-15 (LP) - Body ground
    		Always
    		10 kΩ or higher

Text in Illustration 
*1
Front view of wire harness connector
(to Combination Meter)
*2
Front view of wire harness connector
(to Instrument Panel Junction Block)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.INSPECT COMBINATION METER ASSEMBLY

  1. Reconnect the 3C instrument panel junction block connector.

  1. Perform Active Test using the intelligent tester to turn the security indicator to the ON state (Click here).



    B214214E01

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    D1-15 (LP) - Body ground
    		Security indicator in ON state
    		11 to 14 V

Text in Illustration 
*1
Front view of wire harness connector
(to Combination Meter)


NG
Go to step 4
OK

REPLACE COMBINATION METER ASSEMBLY (Click here)  

4.REPLACE MAIN BODY ECU

  1. Temporarily replace the main body ECU with a new or normally functioning one (Click here).


NEXT


5.PERFORM ACTIVE TEST USING INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the intelligent tester on.

  1. Enter the following menus: Body Electrical / Main Body / Active Test

  1. According to the display on the tester, perform the Active Test.

    Main Body 
    Tester Display
    		Test Part
    		Control Range
    		Diagnostic Note
    Security Indicator
    		Security indicator light
    		ON/OFF
    		-

    OK:
    The security indicator light blinks or goes off correctly when operating it through the intelligent tester.



NG
REPLACE INSTRUMENT PANEL JUNCTION BLOCK
OK

END (MAIN BODY ECU IS DEFECTIVE)