Can Communication System (W/ Vsc) Open In One Side Of Can Branch 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

CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (SKID CONTROL ECU)

CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (SKID CONTROL ECU CAN BRANCH WIRE)

CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (YAW RATE SENSOR ASSEMBLY)

CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (YAW RATE SENSOR ASSEMBLY CAN BRANCH WIRE)

CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (STEERING ANGLE SENSOR CAN BRANCH WIRE)

CAN COMMUNICATION SYSTEM (w/ VSC) - Open in One Side of CAN Branch Line


DESCRIPTION

If 2 or more ECUs and/or sensors do not appear on the intelligent tester "Bus Check" screen, one side of the CAN branch wire may be open (one side of the CANH [CAN branch wire]/CANL [CAN branch wire] of the ECU and/or sensor is open).

Symptom
Trouble Area
2 or more ECUs and/or sensors do not appear on the intelligent tester "Bus Check" screen.
  1. Brake actuator assembly (skid control ECU)
  2. Yaw rate sensor assembly
  3. Spiral cable sub-assembly (steering angle sensor)
  4. CAN branch wire or connector

WIRING DIAGRAM


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Networking.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Open In One Side Of Can Branch Line


INSPECTION PROCEDURE

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).
HINT:
  1. Perform the following inspection for the ECUs (sensors) which are displayed on the intelligent tester. If a malfunction cannot be identified, perform the following inspections for the ECUs (sensors) connected to the CAN communication system.
  2. Do not remove the ECM and No. 3 junction connector as they are the end parts of the circuit. If removed, CAN communication will not be possible.
  3. The open circuit confirmation of the ECM, No. 3 junction connector and CAN main wire is performed in the Check CAN Bus Line procedure of "How to Proceed with Troubleshooting". This inspection only has procedures for checking for an open circuit on one side of a CAN branch wire.
1.CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (SKID CONTROL ECU)

  1. Disconnect the A36 brake actuator assembly (skid control ECU) connector.

  1. Select "Bus Check" on the intelligent tester (HILUX_TGN26 RM000004PEV00AX.html).

    Result
    Result
    		Proceed to
    "Skid Control (ABS/VSC/TRAC)" is not displayed on the intelligent tester
    		A
    Several ECUs and sensors in addition to "Skid Control (ABS/VSC/TRAC)" are displayed on the intelligent tester
    		B


B
Go to step 3
A


2.CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (SKID CONTROL ECU CAN BRANCH WIRE)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Networking.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Open In One Side Of Can Branch Line

  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 RM000004QR300CX.html).

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    A36-25 (CANH) - A36-14 (CANL)
    		Ignition switch off
    		54 to 69 Ω
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Brake Actuator Assembly [Skid Control ECU])


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

REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) (HILUX_TGN26 RM0000010K001MX.html)

3.CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (YAW RATE SENSOR ASSEMBLY)

  1. Disconnect the K21 yaw rate sensor assembly connector.

  1. Select "Bus Check" on the intelligent tester (HILUX_TGN26 RM000004PEV00AX.html).

    Result
    Result
    		Proceed to
    "Yaw Rate Sensor" is not displayed on the intelligent tester
    		A
    Several ECUs and sensors in addition to "Yaw Rate Sensor" are displayed on the intelligent tester
    		B


B
Go to step 5
A


4.CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (YAW RATE SENSOR ASSEMBLY CAN BRANCH WIRE)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Networking.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Open In One Side Of Can Branch Line

  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 RM000004QR300CX.html).

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    K21-3 (CANH) - K21-2 (CANL)
    		Ignition switch off
    		54 to 69 Ω
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Yaw Rate Sensor Assembly)


NG
REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (YAW RATE SENSOR ASSEMBLY)
OK

REPLACE YAW RATE SENSOR ASSEMBLY (HILUX_TGN26 RM000000SS505KX.html)

5.CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (STEERING ANGLE SENSOR CAN BRANCH WIRE)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Networking.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Open In One Side Of Can Branch Line

  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 RM000004QR300CX.html).

  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) - G83-3 (CANL)
    		Ignition switch off
    		54 to 69 Ω
    Text in Illustration
    *a
    		Rear view of wire harness connector
    (to Spiral Cable Sub-assembly [Steering Angle Sensor])


NG
REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (STEERING ANGLE SENSOR)
OK

REPLACE SPIRAL CABLE SUB-ASSEMBLY (STEERING ANGLE SENSOR) (HILUX_TGN26 RM000000SS907AX.html)