Can Communication System (For Rhd) Main Body Ecu Communication Stop Mode

Power Source Network. Land Cruiser. Urj200, 202 Grj200 Vdj200
Networking. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PRECAUTION

DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

CHECK FOR OPEN IN CAN BUS WIRE (MAIN BODY ECU CAN BRANCH WIRE)

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND BODY GROUND)

CAN COMMUNICATION SYSTEM (for RHD) - Main Body ECU Communication Stop Mode


DESCRIPTION


Detection Item
Symptom
Trouble Area
Main Body ECU Communication Stop Mode
Either condition is met:
  1. "Main Body" is not displayed on the "Bus Check" screen.
  2. "Main Body ECU Communication Stop Mode" in "DTC Communication Table" applies.
  1. Power source or inside main body ECU (cowl side junction block LH)
  2. Main body ECU (cowl side junction block LH) CAN branch wire or connector
  3. Main body ECU (cowl side junction block LH)

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System.Can Communication System (For Rhd) Main Body 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 ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.
1.PRECAUTION
NOTICE:
After turning the ignition 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 (Click here).

NEXT


2.DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

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

    CAUTION:
    For vehicle with an SRS system:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
    NOTICE:
    When disconnecting the cable, some systems need to be initialized after the cable is reconnected (Click here).

NEXT


3.CHECK FOR OPEN IN CAN BUS WIRE (MAIN BODY ECU CAN BRANCH WIRE)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System.Can Communication System (For Rhd) Main Body Ecu Communication Stop Mode

  1. Disconnect the E3 main body ECU (cowl side junction block LH) connector.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    E3-5 (CANH) - E3-6 (CANL)
    		Ignition switch off
    		54 to 69 Ω
    Text in Illustration
    *a
    		Rear view of wire harness connector
    (to Main Body ECU [Cowl Side Junction Block LH])


NG
REPAIR OR REPLACE MAIN BODY ECU CAN BRANCH WIRE OR CONNECTOR (CANH, CANL)
OK


4.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND BODY GROUND)


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


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System.Can Communication System (For Rhd) Main Body Ecu Communication Stop Mode


    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Main Body ECU [Cowl Side Junction Block LH])
    		*b
    		Rear view of wire harness connector
    (to Main Body ECU [Cowl Side Junction Block LH])
    NOTICE:
    When disconnecting the cable, some systems need to be initialized after the cable is reconnected (Click here).

  1. Disconnect the E3, 2A and 2D main body ECU (cowl side junction block LH) connectors.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    2A-1 (ALTB) - Body ground
    		Always
    		11 to 14 V

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    2D-62 (GND2) - Body ground
    		Always
    		Below 1 Ω
    E3-1 (GND3) - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)