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Inspection Procedure

WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Turn the ignition switch OFF before measuring the resistances of the main wire and the branch wire.
  • After the ignition switch is turned OFF, check that the key reminder warning system and light reminder warning system are not in operation.
  • Before measuring the resistance, leave the vehicle for at least 1 minute and do not operate the ignition switch, any switches or doors. If doors need to be opened in order to check connectors, open the doors and leave them open.

HINT:

Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.

  1. CHECK CAN BUS WIRE (MAIN WIRE FOR OPEN, CAN BUS LINES FOR SHORT CIRCUIT) 
    1. Measure the resistance of the DLC3.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART (RESISTANCE)

      Tester Connection Condition Specified Condition Proceed to
      E13-6 (CANH) - E13-14 (CANL) Ignition switch OFF 54 to 69 Ω OK
      E13-6 (CANH) - E13-14 (CANL) Ignition switch OFF 69 Ω or more NG-A
      E13-6 (CANH) - E13-14 (CANL) Ignition switch OFF 54 Ω or less NG-B
      Fig 1: Identifying DLC3 (E13) Connector Terminals
      G04492701Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG-A: CHECK CAN MAIN WIRE FOR OPEN 

    NG-B: CHECK CAN BUS LINES FOR SHORT CIRCUIT 

    OK: Go TO NEXT STEP. 

  2. CHECK CAN BUS LINE FOR SHORT TO +B 
    1. Measure the resistance of the DLC3.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART (RESISTANCE)

      Tester Connection Condition Specified Condition
      E13-6 (CANH) - E13-16 (BAT) Ignition switch OFF 1 MΩ or more
      E13-14 (CANL) - E13-16 (BAT) Ignition switch OFF 1 MΩ or more
      Fig 2: Identifying DLC3 (E13) Connector Terminals
      G04492702Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: CHECK CAN BUS LINE FOR SHORT TO +B 

    OK: Go TO NEXT STEP. 

  3. CHECK CAN BUS LINE FOR SHORT TO GND 
    1. Measure the resistance of the DLC3.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART (RESISTANCE)

      Tester Connection Condition Specified Condition
      E13-6 (CANH) - E13-4 (CG) Ignition switch OFF 200 Ω or more
      E13-14 (CANL) - E13-4 (CG) Ignition switch OFF 200 Ω or more
      Fig 3: Identifying DLC3 (E13) Connector Terminals
      G04492703Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: CHECK CAN BUS LINE FOR SHORT TO GND 

    OK: CHECK HOW TO PROCEED WITH TROUBLESHOOTING 

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