Theft Deterrent System Security Indicator Light Circuit

Vehicle Interior. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
Theft Deterrent Keyless Entry. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

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 blink continuously if the engine immobiliser system is set, or not illuminate if the engine 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 blink 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


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Theft Deterrent Keyless Entry.Engine Immobiliser System.Theft Deterrent System Security Indicator Light Circuit


INSPECTION PROCEDURE

1.INSPECT SECURITY INDICATOR LIGHT ASSEMBLY


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Theft Deterrent Keyless Entry.Engine Immobiliser System.Theft Deterrent System Security Indicator Light Circuit

  1. Remove the security indicator light assembly (HILUX_TGN26 RM00000478I00CX.html).

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

    OK:
    Measurement Condition
    		Specified Condition
    Battery positive (+) → Terminal 2 (LP)
    Battery negative (-) → Terminal 1 (E)
    		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 (HILUX_TGN26 RM00000478I00CX.html)
OK


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

  1. Disconnect the G27 security indicator light assembly connector.

  1. Disconnect the G29 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
    G27-2 (LP) - G29-27 (IND)
    		Always
    		Below 1 Ω
    G27-2 (LP) or G29-27 (IND) - Body ground
    		Always
    		10 kΩ or higher
    G27-1 (E) - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (HILUX_TGN26 RM000001J8N00RX.html)