Can Communication System (For Rhd With Entry And Start System) Brake Actuator (Skid Control Ecu) Communication Stop Mode


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

CHECK FOR OPEN IN CAN BUS WIRE (SKID CONTROL ECU CAN BRANCH WIRE)

CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - BATTERY AND BODY GROUND)

CAN COMMUNICATION SYSTEM (for RHD with Entry and Start System) - Brake Actuator (Skid Control ECU) Communication Stop Mode


DESCRIPTION


Detection Item
Symptom
Trouble Area
Brake Actuator (Skid Control ECU) Communication Stop Mode
Either condition is met:
  1. "Skid Control (ABS/VSC/TRAC)" is not displayed on "Bus Check".
  2. "Brake Actuator (Skid Control ECU) Communication Stop Mode" in "DTC Combination Table" applies.
  1. Power source or inside master cylinder solenoid (skid control ECU)
  2. Master cylinder solenoid (skid control ECU) CAN branch wire or connector
  3. Master cylinder solenoid (skid control ECU)

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Networking.Lin Communication System.Can Communication System (For Rhd With Entry And Start System) Brake Actuator (Skid Control Ecu) Communication Stop Mode


INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
HINT:
Operating the engine switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.
1.DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

  1. Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the CAB main wire and the CAN branch wire.

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the airbag system.
    NOTICE:
    1. After turning the engine switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work (LandCruiser RM000003YMD00TX.html).
    2. When disconnecting the cable, some systems need to be initialized after the cable is reconnected (LandCruiser RM000003YMF011X.html).

NEXT


2.CHECK FOR OPEN IN CAN BUS WIRE (SKID CONTROL ECU CAN BRANCH WIRE)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Networking.Lin Communication System.Can Communication System (For Rhd With Entry And Start System) Brake Actuator (Skid Control Ecu) Communication Stop Mode

  1. Disconnect the A7 master cylinder solenoid (skid control ECU) connector.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    A7-11 (CANH) - A7-25 (CANL)
    		Engine switch off
    		54 to 69 Ω
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Master Cylinder Solenoid [Skid Control ECU])


NG
REPAIR OR REPLACE SKID CONTROL ECU CAN BRANCH WIRE OR CONNECTOR (CANH, CANL)
OK


3.CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - BATTERY AND BODY GROUND)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Networking.Lin Communication System.Can Communication System (For Rhd With Entry And Start System) Brake Actuator (Skid Control Ecu) Communication Stop Mode

  1. Connect the cable to the negative (-) battery terminal.

    NOTICE:
    When disconnecting the cable, some systems need to be initialized after the cable is reconnected (LandCruiser RM000003YMF011X.html).

  1. Disconnect the A8 master cylinder solenoid (skid control ECU) connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A7-1 (GND1) - Body ground
    		Always
    		Below 1 Ω
    A7-32 (GND2) - Body ground
    		Always
    		Below 1 Ω
    A8-4 (GND3) - Body ground
    		Always
    		Below 1 Ω

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    A7-2 (+BM1) - Body ground
    		Always
    		11 to 14 V
    A8-2 (+BM2) - Body ground
    		Always
    		11 to 14 V
    A7-31 (+BS) - Body ground
    		Always
    		11 to 14 V
    A8-1 (IG2) - Body ground
    		Engine switch on (IG)
    		11 to 14 V
Text in Illustration
*a
Front view of wire harness connector
(to Master Cylinder Solenoid [Skid Control ECU])


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MASTER CYLINDER SOLENOID (SKID CONTROL ECU) (LandCruiser RM00000171U02EX.html)