CAN COMMUNICATION SYSTEM (for LHD 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 54 Ω.

Symptom Trouble Area
The resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is below 54 Ω.
  • Short between CAN bus lines

  • ECM

  • Certification ECU

  • Four wheel drive control ECU

  • Power steering ECU assembly

  • Power management control ECU

  • Display and navigation module display (AVN)*

  • Center airbag sensor assembly

  • Spiral cable sub-assembly (steering angle sensor)

  • Yaw rate sensor assembly

  • Main body ECU (multiplex network body ECU)

  • Master cylinder solenoid (skid control ECU)

  • Combination meter assembly

  • No. 1 junction connector

  • No. 2 junction connector

  • No. 3 junction connector

  • No. 4 junction connector


WIRING DIAGRAM

A00JYLEE01
A00JYLXE01

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 main wire and the branch wire.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS 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 BRANCH WIRE)


    1. A00JWSAE54
      Text in Illustration
      *a Front view of DLC3

      Disconnect the G94 No. 3 junction connector 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 G94 No. 3 junction connector connector.


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


    1. A00JWSAE54
      Text in Illustration
      *a Front view of DLC3

      Disconnect the G97 No. 1 junction connector 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. 1 JUNCTION CONNECTOR - CERTIFICATION ECU)


    1. A00JX4ME19
      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
      G97-3 (CANH) - G97-14 (CANL) Engine switch off 200 Ω or higher

    NG
    OK
  6. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 JUNCTION CONNECTOR - POWER STEERING ECU ASSEMBLY)


    1. A00JX4ME84
      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
      G97-5 (CANH) - G97-16 (CANL) Engine switch off 200 Ω or higher

    NG
    OK
  7. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 JUNCTION CONNECTOR - POWER MANAGEMENT CONTROL ECU)


    1. A00JX4ME85
      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
      G97-4 (CANH) - G97-15 (CANL) Engine switch off 200 Ω or higher

    NG
    OK
  8. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 JUNCTION CONNECTOR - FOUR WHEEL DRIVE CONTROL ECU)


    1. A00JX4ME22
      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
      G97-2 (CANH) - G97-13 (CANL) Engine switch off 200 Ω or higher

    NG
    OK
  9. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 JUNCTION CONNECTOR - ECM)


    1. A00JX4ME23
      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
      G97-6 (CANH) - G97-17 (CANL) Engine switch off 108 to 132 Ω

    NG
    OK
  10. CONNECT CONNECTOR


    1. Reconnect the G97 No. 1 junction connector connector.


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


    1. A00JYZHE09
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Certification ECU)

      Disconnect the G38 certification ECU 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
  12. CONNECT CONNECTOR


    1. Reconnect the G97 No. 1 junction connector connector.


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


    1. A00JX3JE06
      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
  14. CONNECT CONNECTOR


    1. Reconnect the G97 No. 1 junction connector connector.


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


    1. A00K03CE19
      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
  16. CONNECT CONNECTOR


    1. Reconnect the G97 No. 1 junction connector connector.


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


    1. A00K1PAE04
      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
  18. CONNECT CONNECTOR


    1. Reconnect the G97 No. 1 junction connector connector.


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


    1. A00JY2EE07
      Text in Illustration
      *A for 1GR-FE
      *B for 1KD-FTV
      *a

      Rear view of wire harness connector

      (to ECM)

      Disconnect the G56*1 or G58*2 ECM connector.


      • *1: for 1GR-FE

      • *2: for 1KD-FTV

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

      Standard Resistance
      for 1GR-FE
      Tester Connection Switch Condition Specified Condition
      G56-32 (CANH) - G56-31 (CANL) Engine switch off 108 to 132Ω
      for 1KD-FTV
      Tester Connection Switch Condition Specified Condition
      G58-35 (CANH) - G58-36 (CANL) Engine switch off 108 to 132Ω
      Result
      Result Proceed to
      OK (for 1GR-FE) A
      OK (for 1KD-FTV) B
      NG C

    B
    C
    A
  20. CONNECT CONNECTOR


    1. Reconnect the G97 No. 1 junction connector connector.


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


    1. A00JX4ME86
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)

      Disconnect the G100 No. 2 junction connector connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G100-1 (CANH) - G100-12 (CANL) Engine switch off 108 to 132 Ω

    NG
    OK
  22. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR SIDE)


    1. A00JWSAE54
      Text in Illustration
      *a Front view of DLC3

      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
  23. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - DISPLAY AND NAVIGATION MODULE DISPLAY)

    Tech Tips

    For vehicles without a navigation system, go to "Check for Short in CAN Bus Wires (No. 2 Junction Connector - Center Airbag Sensor Assembly)".


    1. A00JX4ME25
      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
      G100-2 (CANH) - G100-13 (CANL) Engine switch off 200 Ω or higher

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


    1. A00JX4ME87
      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
      G100-5 (CANH) - G100-16 (CANL) Engine switch off 200 Ω or higher

    NG
    OK
  25. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - SPIRAL CABLE SUB-ASSEMBLY)


    1. A00JX4ME27
      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
      G100-3 (CANH) - G100-14 (CANL) Engine switch off 200 Ω or higher

    NG
    OK
  26. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - YAW RATE SENSOR ASSEMBLY)


    1. A00JX4ME28
      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
      G100-4 (CANH) - G100-15 (CANL) Engine switch off 200 Ω or higher

    NG
    OK
  27. CONNECT CONNECTOR


    1. Reconnect the G100 No. 2 junction connector connector.


    NEXT
  28. CHECK FOR SHORT IN CAN BUS WIRES (DISPLAY AND NAVIGATION MODULE DISPLAY)


    1. A00JVOCE01
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Display and Navigation Module Display [AVN])

      Disconnect the H4 display and navigation module display (AVN) connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      H4-21 (CANH) - H4-22 (CANL) Engine switch off 54 to 69 Ω

    NG
    OK
  29. CONNECT CONNECTOR


    1. Reconnect the G100 No. 2 junction connector connector.


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


    1. A00JYPLE10
      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
  31. CONNECT CONNECTOR


    1. Reconnect the G100 No. 2 junction connector connector.


    NEXT
  32. CHECK FOR SHORT IN CAN BUS WIRES (SPIRAL CABLE SUB-ASSEMBLY)


    1. A00K11PE12
      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
  33. CONNECT CONNECTOR


    1. Reconnect the G100 No. 2 junction connector connector.


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


    1. A00K1V9E06
      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
  35. CONNECT CONNECTOR


    1. Reconnect the G100 No. 2 junction connector connector.


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


    1. A00JX4ME30
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)

      Disconnect the G94 No. 3 junction connector connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G94-1 (CANH) - G94-12 (CANL) Engine switch off 108 to 132 Ω

    NG
    OK
  37. CONNECT CONNECTOR


    1. Reconnect the G94 No. 3 junction connector connector.


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


    1. A00JWSAE54
      Text in Illustration
      *a Front view of DLC3

      Disconnect the A73 No. 4 junction connector 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
  39. CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - SKID CONTROL ECU)


    1. A00JX4ME31
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 4 Junction Connector)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A73-11 (CANH) - A73-22 (CANL) Engine switch off 200 Ω or higher

    NG
    OK
  40. CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - COMBINATION METER ASSEMBLY)


    1. A00JX4ME32
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 4 Junction Connector)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A73-10 (CANH) - A73-21 (CANL) Engine switch off 108 to 132 Ω

    NG
    OK
  41. CONNECT CONNECTOR


    1. Reconnect the A73 No. 4 junction connector connector.


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


    1. A00JXY0E03
      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
  43. CONNECT CONNECTOR


    1. Reconnect the A73 No. 4 junction connector connector.


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


    1. A00JXHZE14
      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
  45. CONNECT CONNECTOR


    1. Reconnect the A73 No. 4 junction connector connector.


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


    1. A00JX4ME33
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)

      Disconnect the G94 No. 3 junction connector connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G94-6 (CANH) - G94-17 (CANL) Engine switch off 108 to 132 Ω

    NG
    OK
  47. CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR - MAIN BODY ECU)


    1. A00JX4ME34
      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
      G94-3 (CANH) - G94-14 (CANL) Engine switch off 200 Ω or higher

    NG
    OK
  48. CONNECT CONNECTOR


    1. Reconnect the G94 No. 3 junction connector connector.


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


    1. A00JYSVE07
      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