Can Communication System (W/ Vsc) Short To Gnd In Can Bus Line

Power Source Network. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
Networking. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PRECAUTION

DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

CHECK FOR SHORT TO GND IN CAN BUS WIRE (DLC3 CAN BRANCH WIRE)

CONNECT CONNECTOR

CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 1 JUNCTION CONNECTOR SIDE)

CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 1 JUNCTION CONNECTOR - SKID CONTROL ECU)

CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 1 JUNCTION CONNECTOR - ECM)

CONNECT CONNECTOR

CHECK FOR SHORT TO GND IN CAN BUS WIRE (SKID CONTROL ECU)

CONNECT CONNECTOR

CHECK FOR SHORT TO GND IN CAN BUS WIRE (ECM)

CONNECT CONNECTOR

CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - NO. 1 JUNCTION CONNECTOR)

CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR SIDE)

CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - YAW RATE SENSOR ASSEMBLY)

CONNECT CONNECTOR

CHECK FOR SHORT TO GND IN CAN BUS WIRE (YAW RATE SENSOR ASSEMBLY)

CONNECT CONNECTOR

CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 3 JUNCTION CONNECTOR - NO. 2 JUNCTION CONNECTOR)

CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 3 JUNCTION CONNECTOR - STEERING ANGLE SENSOR)

CONNECT CONNECTOR

CHECK FOR SHORT TO GND IN CAN BUS WIRE (STEERING ANGLE SENSOR)

CAN COMMUNICATION SYSTEM (w/ VSC) - Short to GND in CAN Bus Line


DESCRIPTION

There may be a short circuit between the CAN bus lines and GND when the resistance between terminals 6 (CANH) and 4 (CG) or terminals 14 (CANL) and 4 (CG) of the DLC3 is below 200 Ω.

Symptom
Trouble Area
The resistance between terminals 6 (CANH) and 4 (CG) or terminals 14 (CANL) and 4 (CG) of the DLC3 is below 200 Ω.
  1. Short between CAN bus lines and GND
  2. ECM
  3. Brake actuator assembly (skid control ECU)
  4. Yaw rate sensor assembly
  5. Spiral cable sub-assembly (steering angle sensor)
  6. No. 1 junction connector
  7. No. 2 junction connector
  8. No. 3 junction connector

WIRING DIAGRAM


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Networking.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Short To Gnd In Can 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.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 (HILUX_TGN26 RM000004QR1006X.html).

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:
    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 (HILUX_TGN26 RM000004QR3008X.html).

NEXT


3.CHECK FOR SHORT TO GND IN CAN BUS WIRE (DLC3 CAN BRANCH WIRE)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Networking.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Short To Gnd In Can Bus Line

  1. Disconnect the G57 No. 3 junction connector.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    G18-6 (CANH) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    G18-14 (CANL) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    Text in Illustration
    *a
    		Front view of DLC3


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


4.CONNECT CONNECTOR

  1. Reconnect the G57 No. 3 junction connector.


NEXT


5.CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 1 JUNCTION CONNECTOR SIDE)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Networking.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Short To Gnd In Can Bus Line

  1. Disconnect the G87 No. 1 junction connector.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    G18-6 (CANH) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    G18-14 (CANL) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    Text in Illustration
    *a
    		Front view of DLC3


NG
Go to step 12
OK


6.CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 1 JUNCTION CONNECTOR - SKID CONTROL ECU)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Networking.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Short To Gnd In Can Bus Line

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    G87-13 (CANH) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    G87-7 (CANL) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    Text in Illustration
    *a
    		Rear view of wire harness connector
    (to No. 1 Junction Connector)
    *b
    		Front view of DLC3


NG
Go to step 8
OK


7.CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 1 JUNCTION CONNECTOR - ECM)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Networking.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Short To Gnd In Can Bus Line

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    G87-12 (CANH) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    G87-6 (CANL) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    Text in Illustration
    *a
    		Rear view of wire harness connector
    (to No. 1 Junction Connector)
    *b
    		Front view of DLC3


NG
Go to step 10
OK

REPLACE NO. 1 JUNCTION CONNECTOR

8.CONNECT CONNECTOR

  1. Reconnect the G87 No. 1 junction connector.


NEXT


Go to step 11

9.CHECK FOR SHORT TO GND IN CAN BUS WIRE (SKID CONTROL ECU)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Networking.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Short To Gnd In Can Bus Line

  1. Disconnect the A36 brake actuator assembly (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
    A36-25 (CANH) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    A36-14 (CANL) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Brake Actuator Assembly [Skid Control ECU])
    *b
    		Front view of DLC3


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

REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) (HILUX_TGN26 RM0000010K0018X.html)

10.CONNECT CONNECTOR

  1. Reconnect the G87 No. 1 junction connector.


NEXT


11.CHECK FOR SHORT TO GND IN CAN BUS WIRE (ECM)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Networking.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Short To Gnd In Can Bus Line

  1. Disconnect the G38 ECM connector.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    G38-24 (CANH) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    G38-23 (CANL) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to ECM)
    *b
    		Front view of DLC3


NG
REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO ECM (CANH, CANL)
OK

REPLACE ECM (HILUX_TGN26 RM0000013Z0019X.html)

12.CONNECT CONNECTOR

  1. Reconnect the G87 No. 1 junction connector.


NEXT


13.CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - NO. 1 JUNCTION CONNECTOR)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Networking.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Short To Gnd In Can Bus Line

  1. Disconnect the G86 No. 2 junction connector.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    G86-5 (CANH) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    G86-16 (CANL) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    Text in Illustration
    *a
    		Rear view of wire harness connector
    (to No. 2 Junction Connector)
    *b
    		Front view of DLC3


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


14.CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR SIDE)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Networking.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Short To Gnd In Can Bus Line

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    G18-6 (CANH) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    G18-14 (CANL) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    Text in Illustration
    *a
    		Front view of DLC3


NG
Go to step 18
OK


15.CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - YAW RATE SENSOR ASSEMBLY)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Networking.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Short To Gnd In Can Bus Line

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    G86-7 (CANH) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    G86-18 (CANL) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    Text in Illustration
    *a
    		Rear view of wire harness connector
    (to No. 2 Junction Connector)
    *b
    		Front view of DLC3


NG
Go to step 16
OK

REPLACE NO. 2 JUNCTION CONNECTOR

16.CONNECT CONNECTOR

  1. Reconnect the G86 No. 2 junction connector.


NEXT


17.CHECK FOR SHORT TO GND IN CAN BUS WIRE (YAW RATE SENSOR ASSEMBLY)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Networking.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Short To Gnd In Can Bus Line

  1. Disconnect the K21 yaw rate sensor assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    K21-3 (CANH) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    K21-2 (CANL) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Yaw Rate Sensor Assembly)
    *b
    		Front view of DLC3


NG
REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO YAW RATE SENSOR ASSEMBLY (CANH, CANL)
OK

REPLACE YAW RATE SENSOR ASSEMBLY (HILUX_TGN26 RM000000SS504MX.html)

18.CONNECT CONNECTOR

  1. Reconnect the G86 No. 2 junction connector.


NEXT


19.CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 3 JUNCTION CONNECTOR - NO. 2 JUNCTION CONNECTOR)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Networking.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Short To Gnd In Can Bus Line

  1. Disconnect the G58 No. 3 junction connector.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    G58-2 (CANH) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    G58-1 (CANL) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    Text in Illustration
    *a
    		Rear view of wire harness connector
    (to No. 3 Junction Connector)
    *b
    		Front view of DLC3


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


20.CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 3 JUNCTION CONNECTOR - STEERING ANGLE SENSOR)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Networking.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Short To Gnd In Can Bus Line

  1. Disconnect the G85 No. 3 junction connector.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    G85-2 (CANH) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    G85-1 (CANL) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    Text in Illustration
    *a
    		Rear view of wire harness connector
    (to No. 3 Junction Connector)
    *b
    		Front view of DLC3


NG
Go to step 21
OK

REPLACE NO. 3 JUNCTION CONNECTOR

21.CONNECT CONNECTOR

  1. Reconnect the G58 and G85 No. 3 junction connectors.


NEXT


22.CHECK FOR SHORT TO GND IN CAN BUS WIRE (STEERING ANGLE SENSOR)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Networking.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Short To Gnd In Can Bus Line

  1. Disconnect the G83 spiral cable sub-assembly (steering angle sensor) connector.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    G83-4 (CANH) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    G83-3 (CANL) - G18-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    Text in Illustration
    *a
    		Rear view of wire harness connector
    (to Spiral Cable Sub-assembly [Steering Angle Sensor])
    *b
    		Front view of DLC3


NG
REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO STEERING ANGLE SENSOR (CANH, CANL)
OK

REPLACE SPIRAL CABLE SUB-ASSEMBLY (STEERING ANGLE SENSOR) (HILUX_TGN26 RM0000010B200SX.html)