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Inspection Procedure

WARNING: This page is about a different car, the 2004 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK RESISTANCE (CANL - CANH OF DLC3) 
    Fig 1: Identifying CANL & CANH Terminals
    G02934769Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the resistance between the terminal CANL and CANH of the DLC3.
      RESISTANCE

      A 54 to 66 Ω
      B 1 MΩ or more
      C Less than 54 Ω
      D 108 to 132 Ω
    1. B: Go to step   4 . 
    2. C: Go to step   8 . 
    3. D: Go to step   5 . 
    4. A: Go to next step. 
  2. CHECK HARNESS AND CONNECTOR (CANL CIRCUIT - +B CIRCUIT, CANH CIRCUIT - +B CIRCUIT) 
    1. Measure the resistance between the terminal CANL and BAT of the DLC3.

      OK: 

      Resistance: 1 MΩ or higher 

    2. Measure the resistance between the terminal CANH and BAT of the DLC3.
      Fig 2: Identifying CANL, BAT & CANH Terminals
      G02934770Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 1 MΩ or higher 

    1. NG: Go to step   15 . 
    2. OK: Go to next step. 
  3. CHECK HARNESS AND CONNECTOR (CANL CIRCUIT - GROUND CIRCUIT, CANH CIRCUIT - GROUND CIRCUIT) 
    1. Measure the resistance between the terminal CANL and CG of the DLC3.

      OK: 

      Resistance: 1 MΩ or higher 

    2. Measure the resistance between the terminal CANH and CG of the DLC3.
      Fig 3: Identifying CANL, CANH & CG Terminals
      G02934771Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 1 MΩ or higher 

    1. NG: Go to step   23 . 
    2. OK: IF THE SAME CODE IS STILL OUTPUT AFTER THE DTC IS DELETED, CHECK THE CONTACT CONDITION OF EACH CONNECTION 
  4. CHECK HARNESS AND CONNECTOR (JUNCTION CONNECTOR (J17) - DLC3) 
    1. Disconnect the junction connector (J17).
    2. Measure the resistance the between terminal CANL of the DLC3 and CANL of the junction connector (J17).

      OK: 

      Resistance: 1 Ω or less 

    3. Measure the resistance between the terminal CANH of the DLC3 and CANH of the junction connector (J17).
      Fig 4: Identifying DLC3 & Junction Connector (J17)
      G02934772Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 1 Ω or less 

    1. OK: Go to step   1 . 
    2. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR AND GO TO STEP   1 . 
  5. CHECK HARNESS AND CONNECTOR (CAN BUS CIRCUIT) 
    1. Disconnect the skid control ECU connector.
    2. Measure the resistance between the terminal CANL and CANH of the skid control ECU wire harness side connector.
      Fig 5: Identifying CANH & CANL Terminals
      G02934773Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 108 to 132 Ω 

    1. OK: Go to step   7 . 
    2. NG: Go to next step. 
  6. CHECK JUNCTION CONNECTOR (J17) 
    1. Disconnect the junction connector (J17).
    2. Measure the resistance between the terminal 1 and 4 of the junction connector.

      OK: 

      Resistance: 1 Ω or less 

    3. Measure the resistance between the terminal 12 and 15 of the junction connector.
      Fig 6: Identifying CANH & CANL Terminal Of Junction Connector
      G02934774Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 1 Ω or less 

    1. NG: REPLACE JUNCTION CONNECTOR 
    2. OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (SKID CONTROL ECU - JUNCTION CONNECTOR) 
  7. CHECK RESISTANCE (CANL - CANH OF SKID CONTROL ECU) 
    1. Disconnect the skid control ECU connector.
    2. Measure the resistance between the terminal CANL and CANH of the skid control ECU.
      Fig 7: Identifying Terminals CANH & CANL Of Skid Control ECU
      G02934775Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 108 to 132 Ω 

    1. NG: REPLACE ABS & TRACTION ACTUATOR ASSY 
    2. OK: IF THE SAME CODE IS STILL OUTPUT AFTER THE DTC IS DELETED, CHECK THE CONTACT CONDITION OF EACH CONNECTION 
  8. CHECK HARNESS AND CONNECTOR (DLC3 - JUNCTION CONNECTOR (J17)) 
    1. Disconnect the junction connector (J17).
    2. Measure the resistance between the terminal CANL and CANH of the DLC3.
      Fig 8: Identifying CANL & CANH Terminals
      G02934776Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 1 MΩ or higher 

    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: Go to next step. 
  9. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - JUNCTION CONNECTOR (J17)) 
    1. Disconnect the junction connector (J14).
    2. Disconnect the skid control ECU connector.
    3. Measure the resistance between the terminal CANL and CANH of the skid control ECU wire harness side connector.
      Fig 9: Identifying Terminals CANL & CANH Of Skid Control ECU Wire Harness Side Connector
      G02934777Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 1 MΩ or higher 

    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: Go to next step. 
  10. CHECK RESISTANCE (CANL - CANH OF SKID CONTROL ECU) 
    1. Disconnect the skid control ECU connector.
    2. Measure the resistance between the terminal CANL and CANH of the skid control ECU.
      Fig 10: Identifying Terminals CANL & CANH Of Skid Control ECU
      G02934778Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 108 to 132 Ω 

    1. NG: REPLACE ABS & TRACTION ACTUATOR ASSY 
    2. OK: Go to next step. 
  11. CHECK HARNESS AND CONNECTOR (STEERING ANGLE SENSOR - JUNCTION CONNECTOR (J17)) 
    1. Disconnect the junction connector (J17).
    2. Disconnect the steering angle sensor connector.
    3. Measure the resistance between the terminal CANL and CANH of the steering angle sensor wire harness side connector.
      Fig 11: Identifying Terminals CANL & CANH Of Steering Angle Sensor Wire Harness Side Connector
      G02934779Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 1 MΩ or higher 

    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: Go to next step. 
  12. CHECK RESISTANCE (CANL - CANH OF STEERING ANGLE SENSOR) 
    1. Disconnect the skid control ECU connector.
    2. Measure the resistance between the terminal CANL and CANH of the steering angle sensor.
      Fig 12: Identifying Terminals CANH & CANL Of Steering Angle Sensor
      G02934780Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 108 to 132 Ω 

    1. NG: REPLACE STEERING ANGLE SENSOR 
    2. OK: Go to next step. 
  13. CHECK HARNESS AND CONNECTOR (YAW RATE SENSOR - JUNCTION CONNECTOR (J17)) 
    1. Disconnect the junction connector (J17).
    2. Disconnect the yaw rate sensor connector.
    3. Measure the resistance between the terminal CANL and CANH of the yaw rate sensor wire harness side connector.
      Fig 13: Identifying Terminals CANH & CANL Of Yaw Rate Sensor Wire Harness Side Connector
      G02934781Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 1 MΩ or higher 

    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: Go to next step. 
  14. CHECK JUNCTION CONNECTOR (J17) 
    1. Disconnect the junction connector (J17).
    2. Measure the resistance between the terminal 1, 2, 3 or 4 and 12, 13, 14 or 15 of the junction connector.
      Fig 14: Identifying Terminals 1, 2, 3, 4 (CANH) & 12, 13, 14, 15 (CANL) Of Junction Connector
      G02934782Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 1 MΩ or higher 

    1. NG: REPLACE JUNCTION CONNECTOR 
    2. OK: REPLACE YAW RATE SENSOR 
  15. CHECK HARNESS AND CONNECTOR (DLC3 - JUNCTION CONNECTOR (+B SHORT)) 
    1. Disconnect the junction connector (J17).
    2. Measure the resistance between the terminal CANL and BAT of the DLC3.

      OK: 

      Resistance: 1 MΩ or more 

    3. Measure the resistance between the terminal CANH and BAT of the DLC3.
      Fig 15: Identifying Terminals CANL, BAT, & CANH Of DLC3
      G02934783Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 1 MΩ or higher 

    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: Go to next step. 
  16. CHECK SKID CONTROL ECU 
    1. Connect the junction connector (J17).
    2. Disconnect the skid control ECU connector.
    3. Measure the resistance between the terminal CANL and BAT of the DLC3.

      OK: 

      Resistance: 1 MΩ or more 

    4. Measure the resistance between the terminal CANH and BAT of the DLC3.
      Fig 16: Identifying Terminals CANL, BAT & CANH Of DLC3
      G02934784Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 1 MΩ or higher 

    1. OK: REPLACE ABS & TRACTION ACTUATOR ASSY 
    2. NG: Go to next step. 
  17. CHECK STEERING ANGLE SENSOR 
    1. Disconnect the steering angle sensor connector.
    2. Measure resistance between terminal CANL and BAT of the DLC3.

      OK: 

      Resistance: 1 MΩ or more 

    3. Measure resistance between terminal CANH and BAT of the DLC3.
      Fig 17: Identifying Terminals CANL, BAT & CANH Of DLC3
      G02934785Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 1 MΩ or higher 

    1. OK: REPLACE STEERING ANGLE SENSOR 
    2. NG: Go to next step. 
  18. CHECK YAW RATE SENSOR 
    1. Disconnect the steering angle sensor connector.
    2. Measure the resistance between the terminal CANL and BAT of the DLC3.

      OK: 

      Resistance: 1 MΩ or more 

    3. Measure the resistance between the terminal CANH and BAT of the DLC3.
      Fig 18: Identifying Terminals CANL, BAT & CANH Of DLC3
      G02934786Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 1 MΩ or higher 

    1. OK: REPLACE YAW RATE SENSOR 
    2. NG: Go to next step. 
  19. CHECK AND REPLACE JUNCTION CONNECTOR (J17) 
    1. Disconnect the junction connector (J17).
    2. Measure the resistance the between terminal BAT of the DLC3 and any CANL of the junction connector wire harness side connector.

      OK: 

      Resistance: 1 MΩ or more 

    3. Measure the resistance between the terminal BAT of the DLC3 and any CANH of the junction connector wire harness side connector.
      Fig 19: Identifying Junction Connector (J17) & DLC3
      G02934787Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 1 MΩ or higher 

    1. NG: REPLACE JUNCTION CONNECTOR 
    2. OK: Go to next step. 
  20. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - JUNCTION CONNECTOR (J17)) 
    1. Disconnect the junction connector (J17).
    2. Disconnect the skid control ECU.
    3. Measure the resistance between the terminal CANL of the skid control ECU wire harness side connector and BAT of the DLC3.

      OK: 

      Resistance: 1 MΩ or more 

    4. Measure the resistance between the terminal CANH of the skid control ECU wire harness side connector and BAT of the DLC3.
      Fig 20: Identifying Terminals CANL, CANH & BAT Of DLC3
      G02934788Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 1 MΩ or higher 

    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: Go to next step. 
  21. CHECK HARNESS AND CONNECTOR (STEERING ANGLE SENSOR - JUNCTION CONNECTOR (J17)) 
    1. Disconnect the junction connector (J17).
    2. Disconnect the steering angle sensor connector.
    3. Measure the resistance between the terminal CANL of the steering angle sensor wire harness side connector and BAT of the DLC3.

      OK: 

      Resistance: 1 MΩ or more 

    4. Measure the resistance between the terminal CANH of the steering angle sensor wire harness side connector and BAT of the DLC3.
      Fig 21: Identifying Terminals CANL, CANH & BAT Of DLC3
      G02934789Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 1 MΩ or higher 

    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: Go to next step. 
  22. CHECK HARNESS AND CONNECTOR (YAW RATE SENSOR - JUNCTION CONNECTOR (J17)) 
    1. Disconnect the junction connector (J17).
    2. Disconnect the yaw rate sensor connector.
    3. Measure the resistance between the terminal CANL of the yaw rate sensor wire harness side connector and BAT of the DLC3.

      OK: 

      Resistance: 1 MΩ or more 

    4. Measure the resistance between the terminal CANH of the yaw rate sensor wire harness side connector and BAT of the DLC3.
      Fig 22: Identifying Terminals CANH, CANL & BAT Of DLC3
      G02934790Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 1 MΩ or higher 

    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: IF THE SAME CODE IS STILL OUTPUT AFTER THE DTC IS DELETED, CHECK THE CONTACT CONDITION OF EACH CONNECTION 
  23. CHECK HARNESS AND CONNECTOR (DLC3 - JUNCTION CONNECTOR (GND SHORT)) 
    1. Disconnect the junction connector (J17).
    2. Measure the resistance between the terminal CANL and CG of the DLC3.

      OK: 

      Resistance: 1 MΩ or more 

    3. Measure the resistance between the terminal CANH and CG of the DLC3.
      Fig 23: Identifying CANL, CANH & CG Of DLC3
      G02934791Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 1 MΩ or higher 

    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: Go to next step. 
  24. CHECK SKID CONTROL ECU 
    1. Disconnect the skid control ECU connector.
    2. Measure the resistance between the terminal CANL and CG of the DLC3.

      OK: 

      Resistance: 3 kΩ or more 

    3. Measure the resistance between the terminal CANH and CG of the DLC3.
      Fig 24: Identifying Terminals CANL, CANH & CG Of DLC3
      G02934792Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 3 kΩ or higher 

    1. OK: REPLACE ABS & TRACTION ACTUATOR ASSY 
    2. NG: Go to next step. 
  25. CHECK STEERING ANGLE SENSOR 
    1. Disconnect the steering angle sensor connector.
    2. Measure the resistance between the terminal CANL and CG of the DLC3.

      OK: 

      Resistance: 3 kΩ or more 

    3. Measure the resistance between the terminal CANH and CG of the DLC3.
      Fig 25: Identifying Terminals CANL, CANH & CG Of DLC3
      G02934793Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 3 kΩ or higher 

    1. OK: REPLACE STEERING ANGLE SENSOR 
    2. NG: Go to next step. 
  26. CHECK YAW RATE SENSOR 
    1. Disconnect the steering angle sensor connector.
    2. Measure the resistance between the terminal CANL and CG of the DLC3.

      OK: 

      Resistance: 3 kΩ or more 

    3. Measure the resistance between the terminal CANH and CG of the DLC3.
      Fig 26: Identifying Terminals CANL, CANH & CG Of DLC3
      G02934794Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 3 kΩ or higher 

    1. OK: REPLACE YAW RATE SENSOR 
    2. NG: Go to next step. 
  27. CHECK JUNCTION CONNECTOR (J17) 
    1. Disconnect the junction connector (J17).
    2. Measure the resistance between the terminal CG of the DLC3 and any CANL of the junction connector wire harness side connector.

      OK: 

      Resistance: 1 MΩ or more 

    3. Measure the resistance between the terminal CG of the DLC3 and any CANH of the junction connector wire harness side connector.
      Fig 27: Identifying Junction Connector (J17) & DLC3
      G02934795Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 1 MΩ or higher 

    1. NG: REPLACE JUNCTION CONNECTOR 
    2. OK: Go to next step. 
  28. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - JUNCTION CONNECTOR (J17)) 
    1. Disconnect the junction connector (J17).
    2. Disconnect the skid control ECU.
    3. Measure the resistance between the terminal CANL of the skid control ECU wire harness side connector and CG of the DLC3.

      OK: 

      Resistance: 1 MΩ or more 

    4. Measure resistance between terminal CANH of the skid control ECU wire harness side connector and CG of the DLC3.
      Fig 28: Identifying Terminals CANH, CANL & CG Of DLC3
      G02934796Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 1 MΩ or higher 

    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: Go to next step. 
  29. CHECK HARNESS AND CONNECTOR (STEERING ANGLE SENSOR - JUNCTION CONNECTOR (J17)) 
    1. Disconnect the junction connector (J17).
    2. Disconnect the steering angle sensor connector.
    3. Measure the resistance between the terminal CANL of the steering angle sensor wire harness side connector and CG of the DLC3.

      OK: 

      Resistance: 1 MΩ or more 

    4. Measure the resistance between the terminal CANH of the steering angle sensor wire harness side connector and CG of the DLC3.
      Fig 29: Identifying Terminals CAN, CANL & CG Of DLC3
      G02934797Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 1 MΩ or higher 

    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: Go to next step. 
  30. CHECK HARNESS AND CONNECTOR (YAW RATE SENSOR - JUNCTION CONNECTOR (J17)) 
    1. Disconnect the junction connector (J17).
    2. Disconnect the yaw rate sensor connector.
    3. Measure the resistance between the terminal CANL of the yaw rate sensor wire harness side connector and BAT of the DLC3.

      OK: 

      Resistance: 1 MΩ or more 

    4. Measure the resistance between the terminal CANH of the yaw rate sensor wire harness side connector and BAT of the DLC3.
      Fig 30: Identifying CANH, CANL & BAT Of DLC3
      G02934798Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Resistance: 1 MΩ or higher 

    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: IF THE SAME CODE IS STILL OUTPUT AFTER THE DTC IS DELETED, CHECK THE CONTACT CONDITION OF EACH CONNECTION 
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