Theft Deterrent System Security Indicator Light Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT SECURITY INDICATOR LIGHT ASSEMBLY

CHECK HARNESS AND CONNECTOR (SECURITY INDICATOR LIGHT - THEFT WARNING ECU AND BODY GROUND)

THEFT DETERRENT SYSTEM - Security Indicator Light Circuit


DESCRIPTION

When the theft deterrent system is in the disarmed state, the security indicator light assembly will flash continuously if the immobiliser system is set, or not illuminate if the immobiliser system is not set.
When the theft deterrent system is in the armed state, the engine immobiliser system is automatically set and the security indicator light assembly will flash continuously.
When the theft deterrent system is in the arming preparation state or alarm sounding state, the theft warning ECU assembly causes the security indicator light assembly to illuminate.

WIRING DIAGRAM


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Theft Deterrent.Theft Deterrent System.Theft Deterrent System Security Indicator Light Circuit


INSPECTION PROCEDURE

1.INSPECT SECURITY INDICATOR LIGHT ASSEMBLY
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50

  1. Remove the security indicator light assembly.

  1. Apply battery voltage between the terminals of the security indicator light assembly, and check the illumination of the security indicator light assembly.

    OK:
    Measurement Condition
    		Specified Condition
    Battery positive (+) → Terminal 2
    Battery negative (-) → Terminal 1
    		Illuminates
    NOTICE:
    1. If the positive (+) lead and the negative (-) lead are incorrectly connected, the security indicator light assembly will not illuminate.
    2. If the voltage is too low, the security indicator light assembly will not illuminate.


NG
REPLACE SECURITY INDICATOR LIGHT ASSEMBLY
OK


2.CHECK HARNESS AND CONNECTOR (SECURITY INDICATOR LIGHT - THEFT WARNING ECU AND BODY GROUND)

  1. Disconnect the S10 security indicator light assembly connector.

  1. Disconnect the T36 theft warning ECU assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    T36-22 (IND) - S10-2
    		Always
    		Below 1 Ω
    T36-22 (IND) or S10-2 - Body ground
    		Always
    		10 kΩ or higher
    S10-1 - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (Toyota Fortuner RM000001J8N00TX.html)