Entry And Start System (For Entry Function) Room Oscillator Does Not Recognize Key


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK ENTRY AND START SYSTEM (START FUNCTION)

CHECK WAVE ENVIRONMENT

CHECK ELECTRICAL KEY ANTENNAS IN KEY DIAGNOSTIC MODE

CHECK HARNESS AND CONNECTOR (INDOOR NO. 1 ELECTRICAL KEY ANTENNA - CERTIFICATION ECU)

CHECK CERTIFICATION ECU (OUTPUT SIGNAL)

REPLACE INDOOR NO. 1 ELECTRICAL KEY ANTENNA ASSEMBLY (FRONT FLOOR)

CHECK ELECTRICAL KEY ANTENNA IN KEY DIAGNOSTIC MODE

CHECK HARNESS AND CONNECTOR (INDOOR NO. 2 ELECTRICAL KEY ANTENNA - CERTIFICATION ECU)

CHECK CERTIFICATION ECU (OUTPUT SIGNAL)

REPLACE INDOOR NO. 2 ELECTRICAL KEY ANTENNA ASSEMBLY (REAR FLOOR)

CHECK ELECTRICAL KEY ANTENNA IN KEY DIAGNOSTIC MODE

CHECK HARNESS AND CONNECTOR (INDOOR NO. 3 ELECTRICAL KEY ANTENNA - CERTIFICATION ECU)

CHECK CERTIFICATION ECU (OUTPUT SIGNAL)

REPLACE INDOOR NO. 3 ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE)

CHECK ELECTRICAL KEY ANTENNA IN KEY DIAGNOSTIC MODE

ENTRY AND START SYSTEM (for Entry Function) - Room Oscillator does not Recognize Key


DESCRIPTION

If the room oscillator does not recognize the key, one of the following may be the cause: 1) communication between the indoor No. 1 electrical key antenna (front floor) and electrical key transmitter cannot be performed; 2) communication between the indoor No. 2 electrical key antenna (rear floor) and electrical key transmitter cannot be performed; or 3) communication between the indoor No. 3 electrical key antenna (inside luggage) and electrical key transmitter cannot be performed.

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) Room Oscillator Does Not Recognize Key


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 RM000000YEF0MNX.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 vehicle and turn a courtesy light switch on and off at 1.5 second intervals until communication between the intelligent tester and vehicle begins.
  3. Before replacing the certification ECU, refer to the Service Bulletin.
1.CHECK ENTRY AND START SYSTEM (START FUNCTION)
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) Room Oscillator Does Not Recognize Key

  1. Remove the battery of the electrical key transmitter (LandCruiser RM0000039HF052X.html).

  1. With the clutch pedal (for Manual Transmission) or brake pedal (for Automatic Transmission) depressed, touch the key to the engine switch.

  1. When operating the engine switch, check whether the power source mode changes.

    HINT:
    1. When the electrical key transmitter cannot be verified even though it is in the operating range of the start function, the engine start check can be performed by removing the transmitter battery from the electrical key transmitter and holding the transmitter against the engine switch.
    2. When performing the check, if the power source mode changes, there is a problem with key certification inside the cabin.
    OK:
    Power source mode changes.
    Text in Illustration
    *1
    		Engine Switch
    *2
    		Electrical Key Transmitter


NG
GO TO ENTRY AND START SYSTEM (FOR START FUNCTION) (LandCruiser RM000000YEF0MNX.html)
OK


2.CHECK WAVE ENVIRONMENT

  1. Install the battery to the electrical key transmitter (LandCruiser RM0000039HF052X.html).

  1. Move the electrical key transmitter as described below and perform the operation inspection (LandCruiser RM000002U9W094X.html).

    1. Bring the electrical key transmitter near the indoor No. 1 electrical key antenna (front floor) and perform an engine control system start check.

      NOTICE:
      If the key is brought within 0.2 m (0.656 ft.) of the indoor No. 1 electrical key antenna (front floor), communication is not possible.

    2. Bring the electrical key transmitter near the indoor No. 2 electrical key antenna (rear floor) and perform an engine control system start check.

      NOTICE:
      If the key is brought within 0.2 m (0.656 ft.) of the indoor No. 2 electrical key antenna (rear floor), communication is not possible.

    3. Bring the electrical key transmitter near the indoor No. 3 electrical key antenna (inside luggage) and perform an engine control system start check.

      NOTICE:
      If the key is brought within 0.2 m (0.656 ft.) of the indoor No. 3 electrical key antenna (rear floor), communication is not possible.
      HINT:
      1. When the electrical key transmitter is brought near the indoor electrical key antenna, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
      2. If the inspection result is that the operation check is normal, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.
      OK:
      Engine can be started.


NG
Go to step 3
OK

AFFECTED BY WAVE INTERFERENCE

3.CHECK ELECTRICAL KEY ANTENNAS IN KEY DIAGNOSTIC MODE

  1. Check the following antennas in the key diagnostic mode (LandCruiser RM000000XUC0DVX.html).

    1. Check the indoor No. 1 electrical key antenna (front floor).
      When the electrical key transmitter is at the inspection point, check that the wireless door lock buzzer sounds.

    2. Check the indoor No. 2 electrical key antenna (rear floor.
      When the electrical key transmitter is at the inspection point, check that the wireless door lock buzzer sounds.

    3. Check the indoor No. 3 electrical key antenna (inside luggage).
      When the electrical key transmitter is at the inspection point, check that the wireless door lock buzzer sounds.

      HINT:
      1. If the buzzer sounds, it can be determined that the vehicle interior transmitters are operating normally.
      2. It is possible to check which indoor electrical key antenna (front floor, rear floor or inside luggage) is operating by the sounding of the buzzer.
      3. If the buzzer does not sound for any indoor electrical key antennas, the certification ECU circuit may have a malfunction.
      OK:
      Wireless door lock buzzer sounds.
      Result
      Result
      		Proceed to
      Front operation check fails
      		A
      Rear operation check fails
      		B
      Luggage operation check fails
      		C
      Front, rear and luggage operation checks are normal
      		D


B
Go to step 8

C
Go to step 12

D
REPLACE CERTIFICATION ECU
A


4.CHECK HARNESS AND CONNECTOR (INDOOR NO. 1 ELECTRICAL KEY ANTENNA - CERTIFICATION ECU)

  1. Disconnect the i1 antenna 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
    i1-1 (CLG3) - G38-7 (CLG5)
    		Always
    		Below 1 Ω
    i1-3 (CLGB) - G38-8 (CG5B)
    		Always
    		Below 1 Ω
    G38-7 (CLG5) - Body ground
    		Always
    		10 kΩ or higher
    G38-8 (CG5B) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.CHECK CERTIFICATION ECU (OUTPUT SIGNAL)


    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) Room Oscillator Does Not Recognize Key

  1. Disconnect the i1 antenna connector.

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

    OK:
    Tester Connection
    		Switch Condition
    		Specified Condition
    i1-1 (CLG3) - i1-3 (CLGB)
    		Engine switch off, all doors closed, key not in cabin and lock sensor off → on
    		No pulse generation → pulse generation
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Indoor No. 1 Electrical Key Antenna [Front Floor])


NG
REPLACE CERTIFICATION ECU
OK


6.REPLACE INDOOR NO. 1 ELECTRICAL KEY ANTENNA ASSEMBLY (FRONT FLOOR)

  1. Temporarily replace the indoor No. 1 electrical key antenna (front floor) with a new or normally functioning one (LandCruiser RM000002QFO04WX.html).


NEXT


7.CHECK ELECTRICAL KEY ANTENNA IN KEY DIAGNOSTIC MODE

  1. Check the following antenna in the key diagnostic mode (LandCruiser RM000000XUC0DVX.html).

    1. Check the indoor No. 1 electrical key antenna (front floor).
      When the electrical key transmitter is at the inspection point, check that the wireless door lock buzzer sounds.

      OK:
      Wireless door lock buzzer sounds.


NG
REPLACE CERTIFICATION ECU
OK

END (INDOOR NO. 1 ELECTRICAL KEY ANTENNA ASSEMBLY IS DEFECTIVE)

8.CHECK HARNESS AND CONNECTOR (INDOOR NO. 2 ELECTRICAL KEY ANTENNA - CERTIFICATION ECU)

  1. Disconnect the R14*1 or s1*2 antenna connector.

    1. *1: for 5 Door
    2. *2: for 3 Door

  1. Disconnect the G38 ECU connector.

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

    Standard Resistance:
    for 5 Door
    Tester Connection
    		Condition
    		Specified Condition
    R14-1 (CLG4) - G38-24 (CLG6)
    		Always
    		Below 1 Ω
    R14-2 (CLGB) - G38-25 (CG6B)
    		Always
    		Below 1 Ω
    G38-24 (CLG6) - Body ground
    		Always
    		10 kΩ or higher
    G38-25 (CG6B) - Body ground
    		Always
    		10 kΩ or higher
    for 3 Door
    Tester Connection
    		Condition
    		Specified Condition
    s1-1 (CLG4) - G38-24 (CLG6)
    		Always
    		Below 1 Ω
    s1-2 (CLGB) - G38-25 (CG6B)
    		Always
    		Below 1 Ω
    G38-24 (CLG6) - Body ground
    		Always
    		10 kΩ or higher
    G38-25 (CG6B) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


9.CHECK CERTIFICATION ECU (OUTPUT SIGNAL)


    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) Room Oscillator Does Not Recognize Key

  1. Disconnect the R14*1 or s1*2 antenna connector.

    1. *1: for 5 Door
    2. *2: for 3 Door

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

    OK:
    for 5 Door
    Tester Connection
    		Switch Condition
    		Specified Condition
    R14-1 (CLG4) - R14-2 (CLGB)
    		Engine switch off, all doors closed, key not in cabin and lock sensor off → on
    		No pulse generation → pulse generation
    for 3 Door
    Tester Connection
    		Switch Condition
    		Specified Condition
    s1-1 (CLG4) - s1-2 (CLGB)
    		Engine switch off, all doors closed, key not in cabin and lock sensor off → on
    		No pulse generation → pulse generation
    Text in Illustration
    *A
    		for 5 Door
    *B
    		for 3 Door
    *a
    		Front view of wire harness connector
    (to Indoor No. 2 Electrical Key Antenna [Rear Floor])


NG
REPLACE CERTIFICATION ECU
OK


10.REPLACE INDOOR NO. 2 ELECTRICAL KEY ANTENNA ASSEMBLY (REAR FLOOR)

  1. Temporarily replace the indoor No. 2 electrical key antenna (rear floor) with a new or normally functioning one (LandCruiser RM000002QFV03PX.html).


NEXT


11.CHECK ELECTRICAL KEY ANTENNA IN KEY DIAGNOSTIC MODE

  1. Check the following antenna in the key diagnostic mode (LandCruiser RM000000XUC0DVX.html).

    1. Check the indoor No. 2 electrical key antenna (rear floor).
      When the electrical key transmitter is at the inspection point, check that the wireless door lock buzzer sounds.

      OK:
      Wireless door lock buzzer sounds.


NG
REPLACE CERTIFICATION ECU
OK

END (INDOOR NO. 2 ELECTRICAL KEY ANTENNA ASSEMBLY IS DEFECTIVE)

12.CHECK HARNESS AND CONNECTOR (INDOOR NO. 3 ELECTRICAL KEY ANTENNA - CERTIFICATION ECU)

  1. Disconnect the R15 antenna 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
    R15-1 (CLG6) - G38-26 (CLG7)
    		Always
    		Below 1 Ω
    R15-2 (CLGB) - G38-27 (CG7B)
    		Always
    		Below 1 Ω
    G38-26 (CLG7) - Body ground
    		Always
    		10 kΩ or higher
    G38-27 (CG7B) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


13.CHECK CERTIFICATION ECU (OUTPUT SIGNAL)


    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) Room Oscillator Does Not Recognize Key

  1. Disconnect the R15 antenna connector.

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

    OK:
    Tester Connection
    		Switch Condition
    		Specified Condition
    R15-1 (CLG6) - R15-2 (CLGB)
    		Engine switch off, all doors closed, key not in cabin and lock sensor off → on
    		No pulse generation → pulse generation
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Indoor No. 3 Electrical Key Antenna [Inside Luggage])


NG
REPLACE CERTIFICATION ECU
OK


14.REPLACE INDOOR NO. 3 ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE)

  1. Temporarily replace the indoor No. 3 electrical key antenna (inside luggage) with a new or normally functioning one (LandCruiser RM00000482S00OX.html).


NEXT


15.CHECK ELECTRICAL KEY ANTENNA IN KEY DIAGNOSTIC MODE

  1. Check the following antenna in the key diagnostic mode (LandCruiser RM000000XUC0DVX.html).

    1. Check the indoor No. 3 electrical key antenna (inside luggage).
      When the electrical key transmitter is at the inspection point, check that the wireless door lock buzzer sounds.

      OK:
      Wireless door lock buzzer sounds.


NG
REPLACE CERTIFICATION ECU
OK

END (INDOOR NO. 3 ELECTRICAL KEY ANTENNA ASSEMBLY IS DEFECTIVE)