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 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

WIRING DIAGRAM

A00JV2ZE01
A00JYUQE01

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 G132 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
      G48-6 (CANH) - G48-14 (CANL) Engine switch off 1 MΩ or higher

    NG

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

    OK

  3. CONNECT CONNECTOR


    1. Reconnect the G132 No. 2 junction connector connector.


    NEXT

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


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

      Disconnect the G134 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 108 to 132 Ω

    NG

    CONNECT CONNECTOR Click here

    OK

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


    1. A00JX4ME68
      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

    CONNECT CONNECTOR Click here

    OK

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


    1. A00JX4ME20
      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

    CONNECT CONNECTOR Click here

    OK

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


    1. A00JX4ME21
      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

    CONNECT CONNECTOR Click here

    OK

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


    1. A00JX4ME69
      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

    CONNECT CONNECTOR Click here

    OK

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


    1. A00JX4ME70
      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

    CONNECT CONNECTOR Click here

    OK

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


    1. A00JX4ME71
      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

    NG

    CONNECT CONNECTOR Click here

    OK

    REPLACE NO. 3 JUNCTION CONNECTOR

  11. CONNECT CONNECTOR


    1. Reconnect the G134 No. 3 junction connector connector.


    NEXT

  12. 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

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO CERTIFICATION ECU (CANH, CANL)

    OK

    REPLACE CERTIFICATION ECU

  13. CONNECT CONNECTOR


    1. Reconnect the G134 No. 3 junction connector connector.


    NEXT

  14. 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

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO POWER STEERING ECU ASSEMBLY (CANH, CANL)

    OK

    REPLACE POWER STEERING ECU ASSEMBLY Click here

  15. CONNECT CONNECTOR


    1. Reconnect the G134 No. 3 junction connector connector.


    NEXT

  16. 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

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO POWER MANAGEMENT CONTROL ECU (CA1H, CA1L)

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

  17. CONNECT CONNECTOR


    1. Reconnect the G134 No. 3 junction connector connector.


    NEXT

  18. 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

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO FOUR WHEEL DRIVE CONTROL ECU (CANH, CANL)

    OK

    REPLACE 4 WHEEL DRIVE CONTROL ECU Click here

  19. CONNECT CONNECTOR


    1. Reconnect the G134 No. 3 junction connector connector.


    NEXT

  20. 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

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

    OK

    REPLACE YAW RATE SENSOR ASSEMBLY Click here

  21. CONNECT CONNECTOR


    1. Reconnect the G134 No. 3 junction connector connector.


    NEXT

  22. 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

    REPLACE ECM Click here

    C

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

    A

    REPLACE ECM Click here

  23. CONNECT CONNECTOR


    1. Reconnect the G134 No. 3 junction connector connector.


    NEXT

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


    1. A00JX4ME24
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)

      Disconnect the G132 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
      G132-1 (CANH) - G132-12 (CANL) Engine switch off 108 to 132 Ω

    NG

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

    OK

  25. CONNECT CONNECTOR


    1. Reconnect the G132 No. 2 junction connector connector.


    NEXT

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


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

      Disconnect the A72 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

    CONNECT CONNECTOR Click here

    OK

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


    1. A00JX4ME72
      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

    CONNECT CONNECTOR Click here

    OK

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


    1. A00JX4ME73
      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

    CONNECT CONNECTOR Click here

    OK

    REPLACE NO. 1 JUNCTION CONNECTOR

  29. CONNECT CONNECTOR


    1. Reconnect the A72 No. 1 junction connector connector.


    NEXT

  30. 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

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

    OK

    REPLACE MASTER CYLINDER SOLENOID (SKID CONTROL ECU) Click here

  31. CONNECT CONNECTOR


    1. Reconnect the A72 No. 1 junction connector connector.


    NEXT

  32. 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

    REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO COMBINATION METER ASSEMBLY (CANH, CANL)

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

  33. CONNECT CONNECTOR


    1. Reconnect the A72 No. 1 junction connector connector.


    NEXT

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


    1. A00JX4ME74
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)

      Disconnect the G132 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
      G132-8 (CANH) - G132-19 (CANL) Engine switch off 108 to 132 Ω

    NG

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

    OK

  35. 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. A00JX4ME75
      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

    CONNECT CONNECTOR Click here

    OK

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


    1. A00JX4ME26
      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

    CONNECT CONNECTOR Click here

    OK

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


    1. A00JX4ME76
      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

    CONNECT CONNECTOR Click here

    OK

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


    1. A00JX4ME77
      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

    CONNECT CONNECTOR Click here

    OK

    REPLACE NO. 2 JUNCTION CONNECTOR

  39. CONNECT CONNECTOR


    1. Reconnect the G132 No. 2 junction connector connector.


    NEXT

  40. 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

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DISPLAY AND NAVIGATION MODULE DISPLAY (CANH, CANL)

    OK

    REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY Click here

  41. CONNECT CONNECTOR


    1. Reconnect the G132 No. 2 junction connector connector.


    NEXT

  42. 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

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO CENTER AIRBAG SENSOR ASSEMBLY (CANH, CANL)

    OK

    REPLACE CENTER AIRBAG SENSOR ASSEMBLY Click here

  43. CONNECT CONNECTOR


    1. Reconnect the G132 No. 2 junction connector connector.


    NEXT

  44. 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

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO SPIRAL CABLE SUB-ASSEMBLY (CANH, CANL)

    OK

    REPLACE SPIRAL CABLE SUB-ASSEMBLY Click here

  45. CONNECT CONNECTOR


    1. Reconnect the G132 No. 2 junction connector connector.


    NEXT

  46. 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

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO MAIN BODY ECU (CANH, CANL)

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here