Entry And Start System (For Entry Function) Back Door Entry Unlock Function Does Not Operate


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK POWER DOOR LOCK OPERATION

READ VALUE USING INTELLIGENT TESTER (DOOR LOCK POSITION SWITCH)

READ VALUE USING INTELLIGENT TESTER (UNLOCK SWITCH)

INSPECT LUGGAGE ELECTRICAL KEY SWITCH (UNLOCK SWITCH)

CHECK HARNESS AND CONNECTOR (LUGGAGE ELECTRICAL KEY SWITCH - CERTIFICATION ECU)

ENTRY AND START SYSTEM (for Entry Function) - Back Door Entry Unlock Function does not Operate


DESCRIPTION

If the back door entry unlock function does not operate but the back door lock function operates, the communication line between the vehicle and electrical key transmitter is normal. The entry unlock switch circuit (luggage electrical key switch → certification ECU) may be faulty.

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function).Entry And Start System (For Entry Function) Back Door Entry Unlock Function Does Not Operate


INSPECTION PROCEDURE

NOTICE:
  1. The entry and start system (for Entry Function) uses a multiplex communication system (LIN communication system) and the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting (LandCruiser RM000000XU70G9X.html). Troubleshoot the entry and start system (for Entry Function) after confirming that the communication systems are functioning properly.
  2. When using the intelligent tester with the engine switch off to troubleshoot: Connect the intelligent tester to the DLC3 and turn a courtesy light switch on and off at 1.5-second intervals until communication between the intelligent tester and vehicle begins.
  3. Check that there are no electrical key transmitters in the vehicle.
  4. When checking the entry lock operation multiple times, the lock operation may be limited to 2 consecutive operations depending on the settings. In order to perform the entry lock operation 3 or more times, an unlock operation must be performed once (any type of unlock operation is sufficient). However, only consecutive entry lock operations are limited. Using the wireless lock or other types of lock operations, it is possible to perform consecutive lock operations without this limitation.
  5. Before replacing the certification ECU, refer to the Service Bulletin.
1.CHECK POWER DOOR LOCK OPERATION

  1. When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation (LandCruiser RM000002T6K07VX.html).

    OK:
    Door locks operate normally.


NG
GO TO POWER DOOR LOCK CONTROL SYSTEM (LandCruiser RM0000011G90BEX.html)
OK


2.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
    Back Door Lock Pos SW
    		Back door lock position switch status / ON or OFF
    		ON: Back door unlocked
    OFF: Back door locked
    		-
    OK:
    On the intelligent tester screen, the display changes between ON and OFF as shown in the chart above.


NG
GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Only Back Door Lock/Unlock Functions do not Operate) (LandCruiser RM0000011GC08GX.html)
OK


3.READ VALUE USING INTELLIGENT TESTER (UNLOCK SWITCH)

  1. Using the intelligent tester, read the Data List (LandCruiser RM000000XUF0BSX.html).

    Entry&Start
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Tr/B Door Unlock SW
    		Back door unlock switch / ON or OFF
    		ON: Back door unlock switch pushed
    OFF: Back door unlock switch not pushed
    		-
    OK:
    "ON" (unlock switch is pushed) and "OFF" (unlock switch is not pushed) appear on the screen.


NG
Go to step 4
OK

REPLACE CERTIFICATION ECU

4.INSPECT LUGGAGE ELECTRICAL KEY SWITCH (UNLOCK SWITCH)
Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function).Entry And Start System (For Entry Function) Back Door Entry Unlock Function Does Not Operate

  1. Remove the luggage electrical key switch (LandCruiser RM0000024NS0A2X.html).

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    5 (UL) - 6 (E)
    		No switch pushed
    		10 kΩ or higher
    5 (UL) - 6 (E)
    		Unlock switch pushed
    		Below 1 Ω


NG
REPLACE LUGGAGE ELECTRICAL KEY SWITCH (LandCruiser RM0000024NS0A2X.html)
OK


5.CHECK HARNESS AND CONNECTOR (LUGGAGE ELECTRICAL KEY SWITCH - CERTIFICATION ECU)

  1. Disconnect the X6 switch connector.

  1. Disconnect the G38 ECU connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    X6-5 (UL) - G38-22 (TSW5)
    		Always
    		Below 1 Ω
    G38-22 (TSW5) - Body ground
    		Always
    		10 kΩ or higher
    X6-6 (E) - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE CERTIFICATION ECU