Wireless Door Lock Control System (W/ Entry And Start System) No Answer-Back

Vehicle Interior. Land Cruiser. Urj200, 202 Grj200 Vdj200
Door Lock. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER (DOOR LOCK POSITION SWITCH)

CHECK WIRELESS DOOR LOCK FUNCTION

CHECK HAZARD WARNING LIGHT

CHECK HARNESS AND CONNECTOR (WIRELESS DOOR LOCK BUZZER - CERTIFICATION ECU AND BODY GROUND)

CHECK WIRELESS DOOR LOCK BUZZER (OPERATION)

WIRELESS DOOR LOCK CONTROL SYSTEM (w/ Entry and Start System) - No Answer-Back


DESCRIPTION

In some cases, wireless door lock control functions are normal but the turn signal lights and wireless door lock buzzer are not. Malfunctions may be present in the main body ECU, certification ECU (smart key ECU assembly), turn signal lights, and/or wireless door lock buzzer signal outputs.*
NOTICE:
  1. Before performing the inspection, check that there are no problems related to the CAN communication system and LIN communication system.
  2. When troubleshooting a function, first make sure that the answer-back function is set to the default setting.
  3. Check that DTC B1242 is not output.
  4. When troubleshooting a function, first make sure that the open door warning function is set to the default setting.
HINT:
*: For Europe and China, there is no buzzer sound answer-back function.

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Door Lock.Power Door Lock Control System.Wireless Door Lock Control System (W/ Entry And Start System) No Answer-Back


INSPECTION PROCEDURE

1.READ VALUE USING INTELLIGENT TESTER (DOOR LOCK POSITION SWITCH)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the intelligent tester on.

  1. Enter the following menus: Body / Main Body / Data List.

  1. Read the Data List according to the display on the intelligent tester.

    Main Body
    Tester Display
    		Measurement Item / Range
    		Normal Condition
    		Diagnostic Note
    D Lock Pos switch
    		Driver side door lock position switch signal / ON or OFF
    		ON: Driver side door lock is unlocked
    OFF: Driver side door lock is locked
    		-
    P Lock Pos switch
    		Passenger side door lock position switch signal / ON or OFF
    		ON: Passenger side door is unlocked
    OFF: Passenger side door is locked
    		-
    RL Lock Pos switch
    		Rear door LH lock position switch signal / ON or OFF
    		ON: Rear side door LH is unlocked
    OFF: Rear side door LH is locked
    		-
    RR Lock Pos switch
    		Rear door RH lock position switch signal / ON or OFF
    		ON: Rear side door RH is unlocked
    OFF: Rear side door RH is locked
    		-
    Back Lock Pos switch
    		Back door lock position switch signal / ON or OFF
    		ON: Back door is unlocked
    OFF: Back door is locked
    		-
    OK:
    On the intelligent tester screen, the display changes between LOCK and UNLOCK as shown in the chart above.
HINT:
  1. Go to POWER DOOR LOCK CONTROL SYSTEM (Proceed to Only Driver Door LOCK/UNLOCK Functions do not Operate) (Click here).
  2. Go to POWER DOOR LOCK CONTROL SYSTEM (Proceed to Only Passenger Door LOCK/UNLOCK Functions do not Operate) (Click here).
  3. Go to POWER DOOR LOCK CONTROL SYSTEM (Proceed to Only Rear Door LH LOCK/UNLOCK Functions do not Operate) (Click here).
  4. Go to POWER DOOR LOCK CONTROL SYSTEM (Proceed to Only Rear Door RH LOCK/UNLOCK Functions do not Operate) (Click here).
  5. Go to POWER DOOR LOCK CONTROL SYSTEM (Proceed to Only Back Door LOCK/UNLOCK Functions do not Operate) (Click here).


NG
Go to POWER DOOR LOCK CONTROL SYSTEM
OK


2.CHECK WIRELESS DOOR LOCK FUNCTION

  1. Check that the wireless door lock control functions operate with a transmitter (Click here).

    Result
    Result
    		Proceed to
    Wireless door lock control functions operate normally but turn signal light answer-back does not occur
    		A
    Wireless door lock control functions operate normally but wireless door lock buzzer answer-back does not occur
    		B


B
Go to step 4
A


3.CHECK HAZARD WARNING LIGHT

  1. Check that the turn signal lights flash continuously when the hazard warning signal switch is pressed (Click here).

    OK:
    Hazard warning lights flash continuously.


NG
Go to PROBLEM SYMPTOMS TABLE (LIGHTING SYSTEM) (Click here)
OK

REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

4.CHECK HARNESS AND CONNECTOR (WIRELESS DOOR LOCK BUZZER - CERTIFICATION ECU AND BODY GROUND)

  1. Disconnect the E29 ECU connector.

  1. Disconnect the A20 buzzer connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A20-1 - E29-21 (BZR)
    		Always
    		Below 1 Ω
    A20-2 - Body ground
    A20-1 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.CHECK WIRELESS DOOR LOCK BUZZER (OPERATION)

  1. Temporarily replace the wireless door lock buzzer with a new one (Click here).

  1. Check that the wireless door lock buzzer sounds by using the transmitter lock/unlock switch.

    OK:
    Wireless door lock buzzer sounds.


NG
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
OK

END (WIRELESS DOOR LOCK BUZZER IS DEFECTIVE)