Can Communication System (W/ Vsc) Open In Can Main Bus Line


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

CHECK OPEN IN CAN BUS MAIN WIRE (NO. 3 JUNCTION CONNECTOR - DLC3)

CONNECT CONNECTOR

CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 1 JUNCTION CONNECTOR - NO. 3 JUNCTION CONNECTOR)

CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 1 JUNCTION CONNECTOR - ECM)

CONNECT CONNECTOR

CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 2 JUNCTION CONNECTOR - NO. 3 JUNCTION CONNECTOR)

CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 2 JUNCTION CONNECTOR - NO. 1 JUNCTION CONNECTOR)

CONNECT CONNECTOR

CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 3 JUNCTION CONNECTOR - NO. 2 JUNCTION CONNECTOR)

CONNECT CONNECTOR

CHECK FOR OPEN IN CAN BUS MAIN WIRE (ECM - NO. 1 JUNCTION CONNECTOR)

CAN COMMUNICATION SYSTEM (w/ VSC) - Open in CAN Main Bus Line


DESCRIPTION

There may be an open circuit in the CAN main wire and/or the DLC3 branch wire when the resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is 70 Ω or higher.

Symptom
Trouble Area
Resistance between terminals 6 (CANH) and 14 (CANL) of DLC3 is 70 Ω or higher.
  1. CAN main wire and connector
  2. No. 1 junction connector
  3. No. 2 junction connector
  4. No. 3 junction connector
  5. ECM
  6. DLC3 branch wire or connector

WIRING DIAGRAM


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Can Communication.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Open In Can Main Bus Line


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.DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

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

    CAUTION:
    For vehicles with SRS:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
    NOTICE:
    When disconnecting the cable from the negative (-) battery terminal, some systems need to be initialized after the cable is reconnected (Toyota Fortuner RM000002HD2006X.html).

NEXT


2.CHECK OPEN IN CAN BUS MAIN WIRE (NO. 3 JUNCTION CONNECTOR - DLC3)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Can Communication.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Open In Can Main Bus Line

  1. Disconnect the J51 No. 3 junction connector connector.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    J51-2 (CANH) - D3-6 (CANH)
    		Ignition switch off
    		Below 1 Ω
    J51-1 (CANL) - D3-14 (CANL)
    		Ignition switch off
    		Below 1 Ω


NG
REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DLC3 (CANH, CANL)
OK


3.CONNECT CONNECTOR

  1. Reconnect the J51 No. 3 junction connector connector.


NEXT


4.CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 1 JUNCTION CONNECTOR - NO. 3 JUNCTION CONNECTOR)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Can Communication.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Open In Can Main Bus Line

  1. Disconnect the J57 No. 1 junction connector connector.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    J57-4 (CANH) - J57-1 (CANL)
    		Ignition switch off
    		108 to 132 Ω


NG
Go to step 6
OK


5.CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 1 JUNCTION CONNECTOR - ECM)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Can Communication.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Open In Can Main Bus Line

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    J57-12 (CANH) - J57-6 (CANL)
    		Ignition switch off
    		108 to 132 Ω


NG
Go to step 11
OK

REPLACE NO. 1 JUNCTION CONNECTOR

6.CONNECT CONNECTOR

  1. Reconnect the J57 No. 1 junction connector connector.


NEXT


7.CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 2 JUNCTION CONNECTOR - NO. 3 JUNCTION CONNECTOR)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Can Communication.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Open In Can Main Bus Line

  1. Disconnect the J56 No. 2 junction connector connector.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    J56-3 (CANH) - J56-7 (CANL)
    		Ignition switch off
    		108 to 132 Ω


NG
Go to step 9
OK


8.CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 2 JUNCTION CONNECTOR - NO. 1 JUNCTION CONNECTOR)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Can Communication.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Open In Can Main Bus Line

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    J56-1 (CANH) - J56-2 (CANL)
    		Ignition switch off
    		108 to 132 Ω


NG
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 2 JUNCTION CONNECTOR - NO. 1 JUNCTION CONNECTOR)
OK

REPLACE NO. 2 JUNCTION CONNECTOR

9.CONNECT CONNECTOR

  1. Reconnect the J56 No. 2 junction connector connector.


NEXT


10.CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 3 JUNCTION CONNECTOR - NO. 2 JUNCTION CONNECTOR)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Can Communication.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Open In Can Main Bus Line

  1. Disconnect the J52 No. 3 junction connector connector.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    J52-2 (CANH) - J52-1 (CANL)
    		Ignition switch off
    		108 to 132 Ω


NG
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 3 JUNCTION CONNECTOR - NO. 2 JUNCTION CONNECTOR)
OK

REPLACE NO. 3 JUNCTION CONNECTOR

11.CONNECT CONNECTOR

  1. Reconnect the J57 No. 1 junction connector connector.


NEXT


12.CHECK FOR OPEN IN CAN BUS MAIN WIRE (ECM - NO. 1 JUNCTION CONNECTOR)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Can Communication.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Open In Can Main Bus Line

  1. for 1KD-FTV:

    1. Disconnect the E5 ECM connector.

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

      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      E5-24 (CANH) - E5-23 (CANL)
      		Ignition switch off
      		108 to 132 Ω


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Can Communication.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Open In Can Main Bus Line

  1. for 1GR-FE:

    1. Disconnect the E13 ECM connector.

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

      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      E13-33 (CANH) - E13-34 (CANL)
      		Ignition switch off
      		108 to 132 Ω
Result
Result
Proceed to
OK (for 1KD-FTV)
A
OK (for 1GR-FE)
B
NG
C


B
REPLACE ECM (Toyota Fortuner RM000000VW200DX.html)

C
REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO ECM (ECM - NO. 1 JUNCTION CONNECTOR)
A

REPLACE ECM (Toyota Fortuner RM0000013Z0004X.html)