CAN COMMUNICATION SYSTEM (for LHD without 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*1

  • No. 5 junction connector*2

  • Brake actuator assembly (skid control ECU)

  • Four wheel drive control ECU

  • Power steering ECU assembly*1

  • Air conditioning amplifier assembly

  • Display and navigation module display (AVN)*3

  • Center airbag sensor assembly

  • Spiral cable sub-assembly (steering angle sensor)*4

  • Yaw rate sensor assembly

  • Main body ECU (multiplex network body ECU)

  • Combination meter assembly

  • No. 1 junction connector

  • No. 2 junction connector

  • No. 3 junction connector

  • No. 4 junction connector

WIRING DIAGRAM

A00JZXME01
A00JYYPE01

INSPECTION PROCEDURE

Tech Tips

Operating the ignition 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 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 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. 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) Ignition 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 G94 No. 4 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 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) Ignition switch off 108 to 132 Ω

    NG

    CONNECT CONNECTOR Click here

    OK

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


    1. A00JX4ME43
      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) Ignition switch off 200 Ω or higher

    NG

    CONNECT CONNECTOR Click here

    OK

  6. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 JUNCTION CONNECTOR - ECM OR NO. 5 JUNCTION CONNECTOR)


    1. A00JX4ME44
      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) Ignition switch off 108 to 132 Ω
      Result
      Result Proceed to
      OK A
      NG (for 2TR-FE) B
      NG (for 5L-E) C

    B

    CONNECT CONNECTOR Click here

    C

    CONNECT CONNECTOR Click here

    A

    REPLACE NO. 1 JUNCTION CONNECTOR

  7. CONNECT CONNECTOR


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


    NEXT

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


    1. A00JYR0E10
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Brake Actuator Assembly [Skid Control ECU])

      Disconnect the A6 brake actuator assembly (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
      A6-25 (CANH) - A6-14 (CANL) Ignition switch off 54 to 69 Ω

    NG

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

    OK

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

  9. CONNECT CONNECTOR


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


    NEXT

  10. CHECK FOR SHORT IN CAN BUS WIRES (ECM)


    1. A00JY2EE10
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to ECM)

      Disconnect the G60 ECM connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G60-34 (CANH) - G60-33 (CANL) Ignition switch off 108 to 132Ω

    NG

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

    OK

    REPLACE ECM Click here

  11. CONNECT CONNECTOR


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


    NEXT

  12. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR)


    1. A00K23GE06
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 5 Junction Connector)

      Disconnect the G101 No. 5 junction connector connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G101-3 (CANH) - G101-2 (CANL) Ignition switch off 108 to 132 Ω

    NG

    REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO NO. 5 JUNCTION CONNECTOR (CANH, CANL)

    OK

    REPLACE NO. 5 JUNCTION CONNECTOR

  13. CONNECT CONNECTOR


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


    NEXT

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


    1. A00JX4ME45
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)

      Disconnect the G97 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
      G97-6 (CANH) - G97-17 (CANL) Ignition switch off 108 to 132 Ω

    NG

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

    OK

  15. 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) Ignition switch off 108 to 132 Ω

    NG

    CONNECT CONNECTOR Click here

    OK

  16. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - POWER STEERING ECU ASSEMBLY)

    Tech Tips

    For vehicles with a 5L-E engine, go to "Check for Short in CAN Bus Wires (No. 2 Junction Connector - Four Wheel Drive Control ECU)".


    1. A00JX4ME46
      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
      G97-5 (CANH) - G97-16 (CANL) Ignition switch off 200 Ω or higher

    NG

    CONNECT CONNECTOR Click here

    OK

  17. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - FOUR WHEEL DRIVE CONTROL ECU)


    1. A00JX4ME47
      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
      G97-2 (CANH) - G97-13 (CANL) Ignition switch off 200 Ω or higher

    NG

    CONNECT CONNECTOR Click here

    OK

  18. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - AIR CONDITIONING AMPLIFIER ASSEMBLY)


    1. A00JX4ME48
      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
      G97-4 (CANH) - G97-15 (CANL) Ignition switch off 200 Ω or higher

    NG

    CONNECT CONNECTOR Click here

    OK

    REPLACE NO. 2 JUNCTION CONNECTOR

  19. CONNECT CONNECTOR


    1. Reconnect the G97 No. 2 junction connector connector.


    NEXT

  20. 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) Ignition 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

  21. CONNECT CONNECTOR


    1. Reconnect the G97 No. 2 junction connector connector.


    NEXT

  22. 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) Ignition 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

  23. CONNECT CONNECTOR


    1. Reconnect the G97 No. 2 junction connector connector.


    NEXT

  24. CHECK FOR SHORT IN CAN BUS WIRES (AIR CONDITIONING AMPLIFIER ASSEMBLY)


    1. A00K221E11
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Air Conditioning Amplifier Assembly)

      Disconnect the G25 air conditioning amplifier assembly connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      G25-11 (CANH) - G25-12 (CANL) Ignition switch off 54 to 69 Ω

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO AIR CONDITIONING AMPLIFIER (CANH, CANL)

    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

  25. CONNECT CONNECTOR


    1. Reconnect the G97 No. 2 junction connector connector.


    NEXT

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


    1. A00JX4ME49
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)

      Disconnect the G100 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
      G100-1 (CANH) - G100-12 (CANL) Ignition switch off 108 to 132 Ω

    NG

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

    OK

  27. CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 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) Ignition switch off 108 to 132 Ω

    NG

    CONNECT CONNECTOR Click here

    OK

  28. CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 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. 3 Junction Connector - Center Airbag Sensor Assembly)".


    1. A00JX4ME50
      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
      G100-2 (CANH) - G100-13 (CANL) Ignition switch off 200 Ω or higher

    NG

    CONNECT CONNECTOR Click here

    OK

  29. CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR - CENTER AIRBAG SENSOR ASSEMBLY)


    1. A00JX4ME51
      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
      G100-5 (CANH) - G100-16 (CANL) Ignition switch off 200 Ω or higher

    NG

    CONNECT CONNECTOR Click here

    OK

  30. CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR - SPIRAL CABLE SUB-ASSEMBLY)

    Tech Tips

    For vehicles without a vehicle stability control system (for vacuum brake booster), go to "Check for Short in CAN Bus Wires (No. 3 Junction Connector - Yaw Rate Sensor Assembly)".


    1. A00JX4ME52
      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
      G100-3 (CANH) - G100-14 (CANL) Ignition switch off 200 Ω or higher

    NG

    CONNECT CONNECTOR Click here

    OK

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


    1. A00JX4ME53
      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
      G100-4 (CANH) - G100-15 (CANL) Ignition switch off 200 Ω or higher

    NG

    CONNECT CONNECTOR Click here

    OK

    REPLACE NO. 3 JUNCTION CONNECTOR

  32. CONNECT CONNECTOR


    1. Reconnect the G100 No. 3 junction connector connector.


    NEXT

  33. 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) Ignition 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

  34. CONNECT CONNECTOR


    1. Reconnect the G100 No. 3 junction connector connector.


    NEXT

  35. 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) Ignition 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

  36. CONNECT CONNECTOR


    1. Reconnect the G100 No. 3 junction connector connector.


    NEXT

  37. 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) Ignition 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

  38. CONNECT CONNECTOR


    1. Reconnect the G100 No. 3 junction connector connector.


    NEXT

  39. 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) Ignition 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

  40. CONNECT CONNECTOR


    1. Reconnect the G100 No. 3 junction connector connector.


    NEXT

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


    1. A00JX4ME54
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 4 Junction Connector)

      Disconnect the G94 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
      G94-1 (CANH) - G94-12 (CANL) Ignition switch off 108 to 132 Ω

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 4 JUNCTION CONNECTOR - NO. 3 JUNCTION CONNECTOR)

    OK

  42. CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - MAIN BODY ECU)


    1. A00JX4ME55
      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
      G94-3 (CANH) - G94-14 (CANL) Ignition switch off 200 Ω or higher

    NG

    CONNECT CONNECTOR Click here

    OK

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


    1. A00JX4ME56
      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
      G94-2 (CANH) - G94-13 (CANL) Ignition switch off 108 to 132 Ω

    NG

    CONNECT CONNECTOR Click here

    OK

    REPLACE NO. 4 JUNCTION CONNECTOR

  44. CONNECT CONNECTOR


    1. Reconnect the G94 No. 4 junction connector connector.


    NEXT

  45. 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) Ignition 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

  46. CONNECT CONNECTOR


    1. Reconnect the G94 No. 4 junction connector connector.


    NEXT

  47. 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) Ignition 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