Theft Deterrent System Back Door Courtesy Switch Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT BACK DOOR LOCK (BACK DOOR COURTESY SWITCH)

CHECK WIRE HARNESS (BACK DOOR LOCK - THEFT WARNING ECU AND BODY GROUND)

THEFT DETERRENT SYSTEM - Back Door Courtesy Switch Circuit


DESCRIPTION

The theft warning ECU detects the condition of the back door courtesy switch.

WIRING DIAGRAM


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Theft Deterrent.Theft Deterrent System.Theft Deterrent System Back Door Courtesy Switch Circuit


INSPECTION PROCEDURE

1.INSPECT BACK DOOR LOCK (BACK DOOR COURTESY SWITCH)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Theft Deterrent.Theft Deterrent System.Theft Deterrent System Back Door Courtesy Switch Circuit

  1. Remove the door lock.

  1. Measure the resistance of the switch.

    Standard resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    1 - 2
    		Open-latch (ON)
    		Below 1 Ω
    1 - 2
    		Half-latch (ON)
    		Below 1 Ω
    1 - 2
    		Full-latch (OFF)
    		10 kΩ or higher
    1 - 2
    		Over-latch (OFF)
    		10 kΩ or higher


NG
REPLACE BACK DOOR LOCK
OK


2.CHECK WIRE HARNESS (BACK DOOR LOCK - THEFT WARNING ECU AND BODY GROUND)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Theft Deterrent.Theft Deterrent System.Theft Deterrent System Back Door Courtesy Switch Circuit

  1. Disconnect the B9 switch connector.

  1. Disconnect the T16 ECU connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    B9-2 - T16-7 (CTY)
    		Below 1 Ω
    B9-1 - Body ground
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE