CAN COMMUNICATION SYSTEM (for LHD) Short to GND in CAN Bus Line

DESCRIPTION

There may be a short circuit between the CAN bus lines and GND when the resistance between terminals 6 (CANH) and 4 (CG) or terminals 14 (CANL) and 4 (CG) of the DLC3 is below 200 Ω.

Symptom Trouble Area
The resistance between terminals 6 (CANH) and 4 (CG) or terminals 14 (CANL) and 4 (CG) of the DLC3 is below 200 Ω.

  • Short between CAN bus lines and GND

  • ECM

  • Center airbag sensor assembly*1

  • Headlight swivel ECU assembly*2

  • Multi-media module receiver assembly*3

  • Air conditioning amplifier assembly

  • Main body ECU (cowl side junction block LH)

  • Network gateway ECU*4

  • Combination meter assembly

  • 4WD control ECU*5

  • Clearance warning ECU assembly*5, *6

  • Master cylinder solenoid (skid control ECU)*5

  • No. 1 junction connector

  • No. 2 junction connector

  • No. 3 junction connector

  • No. 6 junction connector*5

WIRING DIAGRAM

A015CEHE01
A015DJ6E01
A0157SDE01
A015DARE01

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. PRECAUTION

    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.


    NEXT

  2. 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:

      For vehicles with an SRS system:

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

      Note

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


    NEXT

  3. CHECK FOR SHORT TO GND IN CAN BUS WIRE (DLC3 CAN BRANCH WIRE)


    1. A0157YPE08
      Text in Illustration
      *a Front view of DLC3

      Disconnect the E75 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
      E22-6 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E22-14 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

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

    OK

  4. CONNECT CONNECTOR


    1. Reconnect the E75 No. 3 junction connector.


    NEXT

  5. SYSTEM CHECK


    1. Check the vehicle specifications.

      Result
      Result Proceed to
      w/ Network Gateway ECU A
      w/o Network Gateway ECU B

    B

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 1 JUNCTION CONNECTOR SIDE) Click here

    A

  6. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 1 JUNCTION CONNECTOR SIDE)


    1. A0157YPE08
      Text in Illustration
      *a Front view of DLC3

      Disconnect the E72 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
      E22-6 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E22-14 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    CONNECT CONNECTOR Click here

    OK

  7. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 1 JUNCTION CONNECTOR - HEADLIGHT SWIVEL ECU ASSEMBLY)

    Note

    For vehicles without dynamic headlight auto leveling, go to "Check for Short to GND in CAN Bus Wire (No. 1 Junction Connector - Center Airbag Sensor Assembly)".


    1. A0157V1E15
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 1 Junction Connector)
      *b Front view of DLC3

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E72-3 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E72-14 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (HEADLIGHT SWIVEL ECU ASSEMBLY) Click here

    OK

  8. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 1 JUNCTION CONNECTOR - CENTER AIRBAG SENSOR ASSEMBLY)


    1. A0157V1E16
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 1 Junction Connector)
      *b Front view of DLC3

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E72-4 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E72-15 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (CENTER AIRBAG SENSOR ASSEMBLY) Click here

    OK

  9. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 1 JUNCTION CONNECTOR - ECM)


    1. A0157V1E17
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 1 Junction Connector)
      *b Front view of DLC3

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E72-2 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E72-13 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (ECM) Click here

    OK

    REPLACE NO. 1 JUNCTION CONNECTOR

  10. CHECK FOR SHORT TO GND IN CAN BUS WIRE (HEADLIGHT SWIVEL ECU ASSEMBLY)


    1. A0157V1E15
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 1 Junction Connector)
      *b Front view of DLC3

      Disconnect the E101 headlight swivel ECU assembly connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E72-3 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E72-14 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO HEADLIGHT SWIVEL ECU ASSEMBLY (MPX1, MPX2)

    OK

    REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY Click here

  11. CHECK FOR SHORT TO GND IN CAN BUS WIRE (CENTER AIRBAG SENSOR ASSEMBLY)


    1. A0157V1E16
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 1 Junction Connector)
      *b Front view of DLC3

      Disconnect the E47 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
      E72-4 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E72-15 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

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

    OK

    REPLACE CENTER AIRBAG SENSOR ASSEMBLY Click here

  12. CHECK FOR SHORT TO GND IN CAN BUS WIRE (ECM)


    1. A0157V1E17
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 1 Junction Connector)
      *b Front view of DLC3

      Disconnect the A38 ECM connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E72-2 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E72-13 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher
      Result
      Result Proceed to
      OK (for 1GR-FE) A
      OK (for 1UZ-FE) B
      OK (for 3UR-FE) C
      OK (for 1VD-FTV) D
      NG E

    B

    REPLACE ECM Click here

    C

    REPLACE ECM Click here

    D

    REPLACE ECM Click here

    E

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

    A

    REPLACE ECM Click here

  13. CONNECT CONNECTOR


    1. Reconnect the E72 No. 1 junction connector.


    NEXT

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


    1. A0157V1E18
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)
      *b Front view of DLC3

      Disconnect the E69 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
      E69-1 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E69-12 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

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

    OK

  15. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR SIDE)


    1. A0157YPE08
      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
      E22-6 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E22-14 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    CONNECT CONNECTOR Click here

    OK

  16. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - MULTI-MEDIA MODULE RECEIVER ASSEMBLY)

    Note

    For vehicles without a navigation system, go to "Check for Short to GND in CAN Bus Wire (No. 2 Junction Connector - Air Conditioning Amplifier Assembly)".


    1. A0157V1E19
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)
      *b Front view of DLC3

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E69-2 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E69-13 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (MULTI-MEDIA MODULE RECEIVER ASSEMBLY) Click here

    OK

  17. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - AIR CONDITIONING AMPLIFIER ASSEMBLY)


    1. A0157V1E20
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)
      *b Front view of DLC3

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E69-5 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E69-16 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (AIR CONDITIONING AMPLIFIER ASSEMBLY) Click here

    OK

  18. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - NETWORK GATEWAY ECU)


    1. A0157V1E21
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)
      *b Front view of DLC3

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E69-3 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E69-14 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (NETWORK GATEWAY ECU) Click here

    OK

    REPLACE NO. 2 JUNCTION CONNECTOR

  19. CHECK FOR SHORT TO GND IN CAN BUS WIRE (MULTI-MEDIA MODULE RECEIVER ASSEMBLY)


    1. A0157V1E19
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)
      *b Front view of DLC3

      Disconnect the F77 multi-media module receiver assembly connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E69-2 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E69-13 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO MULTI-MEDIA MODULE RECEIVER ASSEMBLY (CANH, CANL)

    OK

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

  20. CHECK FOR SHORT TO GND IN CAN BUS WIRE (AIR CONDITIONING AMPLIFIER ASSEMBLY)


    1. A0157V1E20
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)
      *b Front view of DLC3

      Disconnect the E35*1 or E81*2 air conditioning amplifier assembly connector.


      • *1: w/ Rear Air Conditioning System

      • *2: w/o Rear Air Conditioning System

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E69-5 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E69-16 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

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

    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

  21. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NETWORK GATEWAY ECU)


    1. A0157V1E21
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)
      *b Front view of DLC3

      Disconnect the E31 network gateway ECU connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E69-3 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E69-14 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO NETWORK GATEWAY ECU (CA1H, CA1L)

    OK

    REPLACE NETWORK GATEWAY ECU Click here

  22. CONNECT CONNECTOR


    1. Reconnect the E69 No. 2 junction connector.


    NEXT

  23. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 3 JUNCTION CONNECTOR - NO. 2 JUNCTION CONNECTOR)


    1. A0157V1E22
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)
      *b Front view of DLC3

      Disconnect the E75 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
      E75-1 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E75-12 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

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

    OK

  24. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 3 JUNCTION CONNECTOR - MAIN BODY ECU)


    1. A0157V1E23
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)
      *b Front view of DLC3

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E75-4 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E75-15 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (MAIN BODY ECU) Click here

    OK

  25. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 3 JUNCTION CONNECTOR - COMBINATION METER ASSEMBLY)


    1. A0157V1E24
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)
      *b Front view of DLC3

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E75-3 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E75-14 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (COMBINATION METER ASSEMBLY) Click here

    OK

    REPLACE NO. 3 JUNCTION CONNECTOR

  26. CHECK FOR SHORT TO GND IN CAN BUS WIRE (MAIN BODY ECU)


    1. A0157V1E23
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)
      *b Front view of DLC3

      Disconnect the E3 main body ECU (cowl side junction block LH) connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E75-4 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E75-15 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

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

    OK

    REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

  27. CHECK FOR SHORT TO GND IN CAN BUS WIRE (COMBINATION METER ASSEMBLY)


    1. A0157V1E24
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)
      *b Front view of DLC3

      Disconnect the E7 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
      E75-3 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E75-14 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher
      Result
      Result Proceed to
      OK (w/ Multi-information Display) A
      OK (w/o Multi-information Display) B
      NG C

    B

    REPLACE COMBINATION METER ASSEMBLY Click here

    C

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

    A

    REPLACE COMBINATION METER ASSEMBLY Click here

  28. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 1 JUNCTION CONNECTOR SIDE)


    1. A0157YPE08
      Text in Illustration
      *a Front view of DLC3

      Disconnect the E72 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
      E22-6 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E22-14 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    CONNECT CONNECTOR Click here

    OK

  29. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 1 JUNCTION CONNECTOR - CENTER AIRBAG SENSOR ASSEMBLY)

    Note

    For vehicles without an airbag system, go to "Check for Short to GND in CAN Bus Wire (No. 1 Junction Connector - 4WD Control ECU)".


    1. A0157V1E16
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 1 Junction Connector)
      *b Front view of DLC3

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E72-4 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E72-15 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (CENTER AIRBAG SENSOR ASSEMBLY) Click here

    OK

  30. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 1 JUNCTION CONNECTOR - 4WD CONTROL ECU)


    1. A0157V1E25
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 1 Junction Connector)
      *b Front view of DLC3

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E72-5 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E72-16 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (4WD CONTROL ECU) Click here

    OK

  31. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 1 JUNCTION CONNECTOR - ECM)


    1. A0157V1E17
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 1 Junction Connector)
      *b Front view of DLC3

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E72-2 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E72-13 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (ECM) Click here

    OK

    REPLACE NO. 1 JUNCTION CONNECTOR

  32. CHECK FOR SHORT TO GND IN CAN BUS WIRE (CENTER AIRBAG SENSOR ASSEMBLY)


    1. A0157V1E16
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 1 Junction Connector)
      *b Front view of DLC3

      Disconnect the E47 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
      E72-4 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E72-15 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

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

    OK

    REPLACE CENTER AIRBAG SENSOR ASSEMBLY Click here

  33. CHECK FOR SHORT TO GND IN CAN BUS WIRE (4WD CONTROL ECU)


    1. A0157V1E25
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 1 Junction Connector)
      *b Front view of DLC3

      Disconnect the A27 4WD control ECU connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E72-5 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E72-16 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO 4WD CONTROL ECU (CAN+, CAN-)

    OK

    REPLACE 4WD CONTROL ECU Click here

  34. CHECK FOR SHORT TO GND IN CAN BUS WIRE (ECM)


    1. A0157V1E17
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 1 Junction Connector)
      *b Front view of DLC3

      Disconnect the A38 ECM connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E72-2 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E72-13 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher
      Result
      Result Proceed to
      OK (for 1GR-FE) A
      OK (for 1UZ-FE) B
      OK (for 1VD-FTV) C
      NG D

    B

    REPLACE ECM Click here

    C

    REPLACE ECM Click here

    D

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

    A

    REPLACE ECM Click here

  35. CONNECT CONNECTOR


    1. Reconnect the E72 No. 1 junction connector.


    NEXT

  36. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - NO. 1 JUNCTION CONNECTOR)


    1. A0157V1E18
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)
      *b Front view of DLC3

      Disconnect the E69 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
      E69-1 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E69-12 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

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

    OK

  37. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR SIDE)


    1. A0157YPE08
      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
      E22-6 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E22-14 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    CONNECT CONNECTOR Click here

    OK

  38. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - MULTI-MEDIA MODULE RECEIVER ASSEMBLY)

    Note

    For vehicles without a navigation system, go to "Check for Short to GND in CAN Bus Wire (No. 2 Junction Connector - Air Conditioning Amplifier)".


    1. A0157V1E19
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)
      *b Front view of DLC3

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E69-2 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E69-13 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (MULTI-MEDIA MODULE RECEIVER ASSEMBLY) Click here

    OK

  39. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - AIR CONDITIONING AMPLIFIER ASSEMBLY)


    1. A0157V1E20
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)
      *b Front view of DLC3

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E69-5 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E69-16 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (AIR CONDITIONING AMPLIFIER ASSEMBLY) Click here

    OK

    REPLACE NO. 2 JUNCTION CONNECTOR

  40. CHECK FOR SHORT TO GND IN CAN BUS WIRE (MULTI-MEDIA MODULE RECEIVER ASSEMBLY)


    1. A0157V1E19
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)
      *b Front view of DLC3

      Disconnect the F77 multi-media module receiver assembly connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E69-2 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E69-13 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO MULTI-MEDIA MODULE RECEIVER ASSEMBLY (CANH, CANL)

    OK

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

  41. CHECK FOR SHORT TO GND IN CAN BUS WIRE (AIR CONDITIONING AMPLIFIER ASSEMBLY)


    1. A0157V1E20
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 Junction Connector)
      *b Front view of DLC3

      Disconnect the E35*1 or E81*2 air conditioning amplifier connector.


      • *1: w/ Rear Air Conditioning System

      • *2: w/o Rear Air Conditioning System

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E69-5 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E69-16 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

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

    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

  42. CONNECT CONNECTOR


    1. Reconnect the E69 No. 2 junction connector.


    NEXT

  43. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 6 JUNCTION CONNECTOR - NO. 2 JUNCTION CONNECTOR)


    1. A0157V1E26
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 6 Junction Connector)
      *b Front view of DLC3

      Disconnect the F73 No. 6 junction connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      F73-7 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      F73-18 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 6 JUNCTION CONNECTOR - NO. 2 JUNCTION CONNECTOR)

    OK

  44. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 6 JUNCTION CONNECTOR SIDE)


    1. A0157YPE08
      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
      E22-6 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E22-14 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher
      Result
      Result Proceed to
      OK (w/ TOYOTA parking assist-sensor system) A
      OK (w/o TOYOTA parking assist-sensor system) B
      NG C

    B

    REPLACE NO. 6 JUNCTION CONNECTOR

    C

    CONNECT CONNECTOR Click here

    A

  45. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 6 JUNCTION CONNECTOR - CLEARANCE WARNING ECU ASSEMBLY)


    1. A0157V1E27
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 6 Junction Connector)
      *b Front view of DLC3

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      F73-5 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      F73-16 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (CLEARANCE WARNING ECU ASSEMBLY) Click here

    OK

    REPLACE NO. 6 JUNCTION CONNECTOR

  46. CHECK FOR SHORT TO GND IN CAN BUS WIRE (CLEARANCE WARNING ECU ASSEMBLY)


    1. A0157V1E27
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 6 Junction Connector)
      *b Front view of DLC3

      Disconnect the F12 clearance warning ECU assembly connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      F73-5 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      F73-16 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO CLEARANCE WARNING ECU ASSEMBLY (CANH, CANL)

    OK

    REPLACE CLEARANCE WARNING ECU ASSEMBLY Click here

  47. CONNECT CONNECTOR


    1. Reconnect the F73 No. 6 junction connector.


    NEXT

  48. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 3 JUNCTION CONNECTOR - NO. 6 JUNCTION CONNECTOR)


    1. A0157V1E22
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)
      *b Front view of DLC3

      Disconnect the E75 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
      E75-1 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E75-12 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 3 JUNCTION CONNECTOR - NO. 6 JUNCTION CONNECTOR)

    OK

  49. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 3 JUNCTION CONNECTOR - MAIN BODY ECU)


    1. A0157V1E23
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)
      *b Front view of DLC3

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E75-4 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E75-15 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (MAIN BODY ECU) Click here

    OK

  50. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 3 JUNCTION CONNECTOR - SKID CONTROL ECU)


    1. A0157V1E28
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)
      *b Front view of DLC3

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E75-5 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E75-16 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (SKID CONTROL ECU) Click here

    OK

  51. CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 3 JUNCTION CONNECTOR - COMBINATION METER ASSEMBLY)


    1. A0157V1E24
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)
      *b Front view of DLC3

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E75-3 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E75-14 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

    CHECK FOR SHORT TO GND IN CAN BUS WIRE (COMBINATION METER ASSEMBLY) Click here

    OK

    REPLACE NO. 3 JUNCTION CONNECTOR

  52. CHECK FOR SHORT TO GND IN CAN BUS WIRE (MAIN BODY ECU)


    1. A0157V1E23
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)
      *b Front view of DLC3

      Disconnect the E3 main body ECU (cowl side junction block LH) connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      E75-4 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E75-15 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

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

    OK

    REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

  53. CHECK FOR SHORT TO GND IN CAN BUS WIRE (SKID CONTROL ECU)


    1. A0157V1E28
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)
      *b Front view of DLC3

      Disconnect the A24 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
      E75-5 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E75-16 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher

    NG

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

    OK

    REPLACE MASTER CYLINDER SOLENOID (SKID CONTROL ECU) Click here

  54. CHECK FOR SHORT TO GND IN CAN BUS WIRE (COMBINATION METER ASSEMBLY)


    1. A0157V1E24
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 Junction Connector)
      *b Front view of DLC3

      Disconnect the E7 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
      E75-3 (CANH) - E22-4 (CG) Ignition switch off 200 Ω or higher
      E75-14 (CANL) - E22-4 (CG) Ignition switch off 200 Ω or higher
      Result
      Result Proceed to
      OK (w/ Multi-information Display) A
      OK (w/o Multi-information Display) B
      NG C

    B

    REPLACE COMBINATION METER ASSEMBLY Click here

    C

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

    A

    REPLACE COMBINATION METER ASSEMBLY Click here