CAN COMMUNICATION SYSTEM (for RHD with Entry and Start System) Short in CAN Bus Lines

DESCRIPTION

There may be a short circuit between the CAN bus lines when the resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is below 53 Ω.

Symptom Trouble Area
The resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is below 53 Ω.
  • Short between CAN bus lines

  • Combination meter assembly

  • Master cylinder solenoid (skid control ECU)

  • Main body ECU (multiplex network body ECU)

  • Center airbag sensor assembly

  • Spiral cable sub-assembly (steering angle sensor)

  • Certification ECU (smart key ECU assembly)

  • Power management control ECU

  • Navigation receiver assembly*1

  • Radio and display receiver assembly*2

  • Four wheel drive control ECU

  • Power steering ECU assembly

  • Yaw rate sensor assembly

  • ECM

  • No. 1 junction connector

  • No. 2 junction connector

  • No. 3 junction connector


WIRING DIAGRAM

A01DPFHE01
A01DPC6E01
A01DUFGE01

INSPECTION PROCEDURE

Tech Tips

Operating the engine switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.

PROCEDURE


  1. 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 airbag system.

      Note


      • 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 Click here.

      • When disconnecting the cable, some systems need to be initialized after the cable is reconnected Click here.


    NEXT
  2. CHECK FOR SHORT IN CAN BUS WIRES (DLC3 CAN BRANCH WIRE)


    1. A01DQF2E13
      Text in Illustration
      *a Front view of DLC3

      Disconnect the G132 No. 2 junction connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G48-6 (CANH) - G48-14 (CANL) Engine switch off 1 MΩ or higher

    NG
    OK
  3. CONNECT CONNECTOR


    1. Reconnect the G132 No. 2 junction connector.


    NEXT
  4. CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR SIDE)


    1. A01DQF2E13
      Text in Illustration
      *a Front view of DLC3

      Disconnect the G134 No. 3 junction connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G48-6 (CANH) - G48-14 (CANL) Engine switch off 108 to 132 Ω

    NG
    OK
  5. CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR - POWER STEERING ECU ASSEMBLY)


    1. A01DNK3E70
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G134-5 (CANH) - G134-16 (CANL) Engine switch off 200 Ω or higher

    NG
    OK
  6. CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR - POWER MANAGEMENT CONTROL ECU)


    1. A01DNK3E71
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G134-4 (CANH) - G134-15 (CANL) Engine switch off 200 Ω or higher

    NG
    OK
  7. CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR - FOUR WHEEL DRIVE CONTROL ECU)


    1. A01DNK3E72
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G134-3 (CANH) - G134-14 (CANL) Engine switch off 200 Ω or higher

    NG
    OK
  8. CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR - YAW RATE SENSOR ASSEMBLY)


    1. A01DNK3E76
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G134-8 (CANH) - G134-19 (CANL) Engine switch off 200 Ω or higher

    NG
    OK
  9. CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR - CERTIFICATION ECU)


    1. A01DNK3E73
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G134-6 (CANH) - G134-17 (CANL) Engine switch off 200 Ω or higher

    NG
    OK
  10. CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR - ECM)


    1. A01DNK3E66
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G134-2 (CANH) - G134-13 (CANL) Engine switch off 108 to 132 Ω
      Result
      Result Proceed to
      OK A
      NG (for 1GR-FE) B
      NG (for 1KD-FTV) C

    B
    C
    A
  11. CONNECT CONNECTOR


    1. Reconnect the G134 No. 3 junction connector.


    NEXT
  12. CHECK FOR SHORT IN CAN BUS WIRES (POWER STEERING ECU ASSEMBLY)


    1. A01DO0SE06
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Power Steering ECU Assembly)

      Disconnect the G46 power steering ECU assembly connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G46-1 (CANH) - G46-2 (CANL) Engine switch off 54 to 69 Ω

    NG
    OK
  13. CONNECT CONNECTOR


    1. Reconnect the G134 No. 3 junction connector.


    NEXT
  14. CHECK FOR SHORT IN CAN BUS WIRES (POWER MANAGEMENT CONTROL ECU)


    1. A01DRF6E25
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Power Management Control ECU)

      Disconnect the G51 power management control ECU connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G51-14 (CA1H) - G51-13 (CA1L) Engine switch off 54 to 69 Ω

    NG
    OK
  15. CONNECT CONNECTOR


    1. Reconnect the G134 No. 3 junction connector.


    NEXT
  16. CHECK FOR SHORT IN CAN BUS WIRES (FOUR WHEEL DRIVE CONTROL ECU)


    1. A01DOT6E04
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Four Wheel Drive Control ECU)

      Disconnect the G53 four wheel drive control ECU connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G53-19 (CANH) - G53-20 (CANL) Engine switch off 54 to 69 Ω

    NG
    OK
  17. CONNECT CONNECTOR


    1. Reconnect the G134 No. 3 junction connector.


    NEXT
  18. CHECK FOR SHORT IN CAN BUS WIRES (YAW RATE SENSOR ASSEMBLY)


    1. A01DN72E06
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Yaw Rate Sensor Assembly)

      Disconnect the G52 yaw rate sensor assembly connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G52-3 (CANH) - G52-2 (CANL) Engine switch off 54 to 69 Ω

    NG
    OK
  19. CONNECT CONNECTOR


    1. Reconnect the G134 No. 3 junction connector.


    NEXT
  20. CHECK FOR SHORT IN CAN BUS WIRES (CERTIFICATION ECU)


    1. A01DMLUE40
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Certification ECU [Smart Key ECU Assembly])

      Disconnect the G38 certification ECU (smart key ECU assembly) connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G38-9 (CANH) - G38-10 (CANL) Engine switch off 54 to 69 Ω

    NG
    OK
  21. CONNECT CONNECTOR


    1. Reconnect the G134 No. 3 junction connector.


    NEXT
  22. CHECK FOR SHORT IN CAN BUS WIRES (ECM)


    1. A01DMJLE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to ECM)

      Disconnect the G56 ECM connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G56-32 (CANH) - G56-31 (CANL) Engine switch off 108 to 132 Ω

    NG
    OK
  23. CONNECT CONNECTOR


    1. Reconnect the G134 No. 3 junction connector.


    NEXT
  24. CHECK FOR SHORT IN CAN BUS WIRES (ECM)


    1. A01DMJLE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to ECM)

      Disconnect the G58 ECM connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G58-35 (CANH) - G58-36 (CANL) Engine switch off 108 to 132 Ω

    NG
    OK
  25. CONNECT CONNECTOR


    1. Reconnect the G134 No. 3 junction connector.


    NEXT
  26. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - NO. 3 JUNCTION CONNECTOR)


    1. A01DNK3E74
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)

      Disconnect the G132 No. 2 junction connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G132-1 (CANH) - G132-12 (CANL) Engine switch off 108 to 132 Ω

    NG
    OK
  27. CONNECT CONNECTOR


    1. Reconnect the G132 No. 2 junction connector.


    NEXT
  28. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 JUNCTION CONNECTOR SIDE)


    1. A01DQF2E13
      Text in Illustration
      *a Front view of DLC3

      Disconnect the A72 No. 1 junction connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G48-6 (CANH) - G48-14 (CANL) Engine switch off 108 to 132 Ω

    NG
    OK
  29. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 JUNCTION CONNECTOR - SKID CONTROL ECU)


    1. A01DNK3E75
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 1 Junction Connector)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A72-11 (CANH) - A72-22 (CANL) Engine switch off 200 Ω or higher

    NG
    OK
  30. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 JUNCTION CONNECTOR - COMBINATION METER ASSEMBLY)


    1. A01DNK3E68
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 1 Junction Connector)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A72-10 (CANH) - A72-21 (CANL) Engine switch off 108 to 132 Ω

    NG
    OK
  31. CONNECT CONNECTOR


    1. Reconnect the A72 No. 1 junction connector.


    NEXT
  32. CHECK FOR SHORT IN CAN BUS WIRES (SKID CONTROL ECU)


    1. A01DQSDE03
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Master Cylinder Solenoid [Skid Control ECU])

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

    2. 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

    NG
    OK
  33. CONNECT CONNECTOR


    1. Reconnect the A72 No. 1 junction connector.


    NEXT
  34. CHECK FOR SHORT IN CAN BUS WIRES (COMBINATION METER ASSEMBLY)


    1. A01DNYIE14
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Combination Meter Assembly)

      Disconnect the G6 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G6-40 (CANH) - G6-39 (CANL) Engine switch off 108 to 132 Ω

    NG
    OK
  35. CONNECT CONNECTOR


    1. Reconnect the A72 No. 1 junction connector.


    NEXT
  36. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - NO. 1 JUNCTION CONNECTOR)


    1. A01DNK3E65
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)

      Disconnect the G132 No. 2 junction connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G132-8 (CANH) - G132-19 (CANL) Engine switch off 108 to 132 Ω

    NG
    OK
  37. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - NAVIGATION RECEIVER ASSEMBLY)

    Note

    For vehicles without a navigation system (for navigation receiver type), go to "Check for Short in CAN Bus Wires (No. 2 Junction Connector - Radio and Display Receiver Assembly)".


    1. A01DNK3E77
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G132-9 (CANH) - G132-20 (CANL) Engine switch off 200 Ω or higher

    NG
    OK
  38. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - RADIO AND DISPLAY RECEIVER ASSEMBLY)

    Note

    For vehicles with a navigation system (for navigation receiver type), go to "Check for Short in CAN Bus Wires (No. 2 Junction Connector - Center Airbag Sensor Assembly)".


    1. A01DNK3E77
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G132-9 (CANH) - G132-20 (CANL) Engine switch off 200 Ω or higher

    NG
    OK
  39. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - CENTER AIRBAG SENSOR ASSEMBLY)


    1. A01DNK3E78
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G132-5 (CANH) - G132-16 (CANL) Engine switch off 200 Ω or higher

    NG
    OK
  40. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - STEERING ANGLE SENSOR)


    1. A01DNK3E79
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G132-7 (CANH) - G132-18 (CANL) Engine switch off 200 Ω or higher

    NG
    OK
  41. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - MAIN BODY ECU)


    1. A01DNK3E80
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G132-2 (CANH) - G132-13 (CANL) Engine switch off 200 Ω or higher

    NG
    OK
  42. CONNECT CONNECTOR


    1. Reconnect the G132 No. 2 junction connector.


    NEXT
  43. CHECK FOR SHORT IN CAN BUS WIRES (NAVIGATION RECEIVER ASSEMBLY)


    1. A01DM2OE12
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Navigation Receiver Assembly)

      Disconnect the H56 navigation receiver assembly connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      H56-9 (CANH) - H56-10 (CANL) Engine switch off 54 to 69 Ω

    NG
    OK
  44. CONNECT CONNECTOR


    1. Reconnect the G132 No. 2 junction connector.


    NEXT
  45. CHECK FOR SHORT IN CAN BUS WIRES (RADIO AND DISPLAY RECEIVER ASSEMBLY)


    1. A01DM2OE10
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Radio and Display Receiver Assembly)

      Disconnect the H51 radio and display receiver assembly connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      H51-9 (CANH) - H51-10 (CANL) Engine switch off 54 to 69 Ω

    NG
    OK
  46. CONNECT CONNECTOR


    1. Reconnect the G132 No. 2 junction connector.


    NEXT
  47. CHECK FOR SHORT IN CAN BUS WIRES (CENTER AIRBAG SENSOR ASSEMBLY)


    1. A01DMGIE10
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Center Airbag Sensor Assembly)

      Disconnect the G1 center airbag sensor assembly connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G1-13 (CANH) - G1-22 (CANL) Engine switch off 54 to 69 Ω

    NG
    OK
  48. CONNECT CONNECTOR


    1. Reconnect the G132 No. 2 junction connector.


    NEXT
  49. CHECK FOR SHORT IN CAN BUS WIRES (STEERING ANGLE SENSOR)


    1. A01DS8NE12
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Spiral Cable Sub-assembly [Steering Angle Sensor])

      Disconnect the G33 spiral cable sub-assembly (steering angle sensor) connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G33-4 (CANH) - G33-3 (CANL) Engine switch off 54 to 69 Ω

    NG
    OK
  50. CONNECT CONNECTOR


    1. Reconnect the G132 No. 2 junction connector.


    NEXT
  51. CHECK FOR SHORT IN CAN BUS WIRES (MAIN BODY ECU)


    1. A01DT10E07
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Main Body ECU [Multiplex Network Body ECU])

      Disconnect the G64 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G64-14 (CANH) - G64-13 (CANL) Engine switch off 54 to 69 Ω

    NG
    OK