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Inspection Procedure

WARNING: This page is about a different car, the 2004 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CAN BUS LINE (MAIN BUS LINE FOR DISCONNECTION, BUS LINES FOR SHORT CIRCUIT) 
    1. Turn the ignition switch to the LOCK position.
    2. Measure the resistance according to the value (s) in the table below.

      Standard: 

      TERMINALS SPECIFIED CONDITION CHART

      Tester connection Condition Specified value Result
      D3-6 (CANH) -D3-14 (CANL) Ignition SW OFF 54 to 69 Ω OK
      D3-6 (CANH) -D3-14 (CANL) Ignition SW OFF 69 Ω or more NG-A
      D3-6 (CANH) -D3-14 (CANL) Ignition SW OFF 54 Ω or less NG-B
      Fig 1: Checking Can Main Bus Line For Disconnection
      G02909845Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG-A: CHECK CAN MAIN BUS LINE FOR DISCONNECTION (See  CHECK CAN MAIN BUS LINE FOR DISCONNECTION  ) 
    2. NG-B: CHECK CAN BUS LINES FOR SHORT CIRCUIT (See  CHECK CAN BUS LINES FOR SHORT CIRCUIT  ) 
    3. OK: GO TO NEXT STEP. 
  2. CHECK CAN BUS LINE (CAN-H) FOR SHORT TO +B 
    1. Measure the resistance according to the value (s) in the table below.

      Standard: 

      TERMINALS SPECIFIED CONDITION CHART

      Tester connection Condition Specified value
      D3-6 (CANH) -D3-16 (BAT) Ignition SW OFF 1 MΩ or more
      Fig 2: Checking Can Bus Line (Can-H) For Short To +B
      G02909846Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: CHECK CAN BUS LINE (CAN-H) FOR SHORT TO +B (See  CHECK CAN BUS LINE (CAN-H) FOR SHORT TO +B  ) 
    2. OK: GO TO NEXT STEP. 
  3. CHECK CAN BUS LINE (CAN-L) FOR SHORT TO +B 
    1. Measure the resistance according to the value (s) in the table below.

      Standard: 

      TERMINALS SPECIFIED CONDITION CHART

      Tester connection Condition Specified value
      D3-14 (CANL) - D3-16 (BAT) Ignition SW OFF 1 MΩ or more
      Fig 3: Checking Can Bus Line (Can-L) For Short To +B
      G02909847Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: CHECK CAN BUS LINE (CAN-L) FOR SHORT TO +B (See  CHECK CAN BUS LINE (CAN-L) FOR SHORT TO +B  ) 
    2. OK: GO TO NEXT STEP. 
  4. CHECK CAN BUS LINE (CAN-H) FOR SHORT TO GND 
    1. Measure the resistance according to the value (s) in the table below.

      Standard: 

      TERMINALS SPECIFIED CONDITION CHART

      Tester connection Condition Specified value
      D3-4 (CG) - D3-6 (CANH) Ignition SW OFF 3 kΩ or more
      Fig 4: Checking Can Bus Line (Can-H) For Short To GND
      G02909848Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: CHECK CAN BUS LINE (CAN-H) FOR SHORT TO GND (See  CHECK CAN BUS LINE (CAN-H) FOR SHORT TO GND  ) 
    2. OK: GO TO NEXT STEP. 
  5. CHECK CAN BUS LINE (CAN-L) FOR SHORT TO GND 
    1. Measure the resistance according to the value (s) in the table below.

      Standard: 

      TERMINALS SPECIFIED CONDITION CHART

      Tester connection Condition Specified value
      D3-4 (CG) - D3-14 (CANL) Ignition SW OFF 3 kΩ or more
      Fig 5: Checking Can Bus Line (Can-L) For Short To GND
      G02909849Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: CHECK CAN BUS LINE (CAN-L) FOR SHORT TO GND (See  CHECK CAN BUS LINE (CAN-L) FOR SHORT TO GND  ) 
    2. OK: HOW TO PROCEED WITH TROUBLESHOOTING (See  HOW TO PROCEED WITH TROUBLESHOOTING  ) 
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