Wireless Door Lock Control System (For Built-In Type Door Control Receiver) No Answer-Back


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK WIRELESS DOOR LOCK

CHECK HAZARD WARNING LIGHT

CHECK WIRE HARNESS (THEFT WARNING ECU - TURN SIGNAL FLASHER RELAY)

WIRELESS DOOR LOCK CONTROL SYSTEM (for Built-in Type Door Control Receiver) - No Answer-back


DESCRIPTION

In some cases, wireless control functions are normal but one or more of the following may occur:
  1. The hazard warning light answer-back function is not normal (the theft warning ECU's turn signal flasher relay output may be malfunctioning).
  2. The security horn answer-back function is not normal (the security horn signal output may be malfunctioning)*.
HINT:
*: The security horn applies only if the wireless answer-back function has been customized so that the hazard warning lights flash and the security horn sounds.

WIRING DIAGRAM


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Door Lock.Wireless Door Lock Control System (For Built-In Type Door Control Receiver).Wireless Door Lock Control System (For Built-In Type Door Control Receiver) No Answer-Back


INSPECTION PROCEDURE

1.CHECK WIRELESS DOOR LOCK

  1. Check the wireless door lock functions by operating the transmitter switches.

    Result:
    Result
    		Proceed to
    Wireless door lock functions are normal but hazard warning lights' answer-back does not occur
    		A
    Wireless door lock functions are normal but security horn's answer-back does not occur*
    		B
    Wireless door lock functions are abnormal
    		C
HINT:
*: The security horn applies only if the wireless answer-back function has been customized so the hazard warning lights flash and the security horn sounds.


B
GO TO THEFT DETERRENT SYSTEM

C
GO TO FLOWCHART (ONLY WIRELESS CONTROL FUNCTION IS INOPERATIVE)
A


2.CHECK HAZARD WARNING LIGHT

  1. Check that the hazard warning lights flash when the hazard warning signal switch is pressed.

    OK:
    Hazard warning lights flash.


NG
GO TO LIGHTING SYSTEM
OK


3.CHECK WIRE HARNESS (THEFT WARNING ECU - TURN SIGNAL FLASHER RELAY)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Door Lock.Wireless Door Lock Control System (For Built-In Type Door Control Receiver).Wireless Door Lock Control System (For Built-In Type Door Control Receiver) No Answer-Back

  1. Disconnect the T16 ECU connector.

  1. Disconnect the T23 relay connector.

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

    Standard resistance:
    Tester Connection
    		Specified Condition
    T16-23 (HAZD) - T23-8 (HAZ)
    		Below 1 Ω


OK
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

REPLACE THEFT WARNING ECU ASSEMBLY