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Inspection Procedure

  1. CHECK CAN BUS LINE (MAIN BUS LINE FOR DISCONNECTION, BUS LINES FOR SHORT CIRCUIT) 
    1. Measure the resistance according to MAIN BUS LINE FOR DISCONNECTION, BUS LINES FOR SHORT CIRCUIT  .

      Standard: 

      MAIN BUS LINE FOR DISCONNECTION, BUS LINES FOR SHORT CIRCUIT

      Tester Connection Condition Specified Condition Proceed to
      D1-6 (CANH) - D1-14 (CANL) Ignition switch OFF 54 to 69 Ω OK
      D1-6 (CANH) - D1-14 (CANL) Ignition switch OFF 69 Ω or higher NG-A
      D1-6 (CANH) - D1-14 (CANL) Ignition switch OFF Below 54 Ω NG-B
      Fig 1: Checking CAN Bus Line (Main Bus Line For Disconnection, Bus Lines For Short Circuit)
      G03196936Courtesy 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 (CANH) FOR SHORT TO B+ 
    1. Measure the resistance according to CAN BUS LINE (CANH) FOR SHORT TO B+  .

      Standard: 

      CAN BUS LINE (CANH) FOR SHORT TO B+

      Tester Connection Condition Specified Condition
      D1-6 (CANH) - D1-16 (BAT) Ignition switch OFF 1 MΩ or higher
      Fig 2: Checking CAN Bus Line (CANH) For Short To B+
      G03196937Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG : (See  CHECK CAN BUS LINE (CANH) FOR SHORT TO B+   ) 
    2. OK : GO TO NEXT STEP. 
  3. CHECK CAN BUS LINE (CANL) FOR SHORT TO B+ 
    1. Measure the resistance according to CAN BUS LINE (CANL) FOR SHORT TO B+  .

      Standard: 

      CAN BUS LINE (CANL) FOR SHORT TO B+

      Tester Connection Condition Specified Condition
      D1-14 (CANL) - D1-16 (BAT) Ignition switch OFF 1 MΩ or higher
      Fig 3: Checking CAN Bus Line (CANL) For Short To B+
      G03196938Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG : (See  CHECK CAN BUS LINE (CANL) FOR SHORT TO B+   ) 
    2. OK : GO TO NEXT STEP. 
  4. CHECK CAN BUS LINE (CANH) FOR SHORT TO GND 
    1. Measure the resistance according to CAN BUS LINE (CANH) FOR SHORT TO GND  .

      Standard: 

      CAN BUS LINE (CANH) FOR SHORT TO GND

      Tester Connection Condition Specified Condition
      D1-4 (CG) - D1-6 (CANH) Ignition switch OFF 3 kΩ or higher
      Fig 4: Checking CAN Bus Line (CANH) For Short To GND
      G03196939Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG : CHECK CAN BUS LINE (CANH) FOR SHORT TO GND (See  CHECK CAN BUS LINE (CANH) FOR SHORT TO GND   ) 
    2. OK : GO TO NEXT STEP. 
  5. CHECK CAN BUS LINE (CANL) FOR SHORT TO GND 
    1. Measure the resistance according to CAN BUS LINE (CANL) FOR SHORT TO GND  .

      Standard: 

      CAN BUS LINE (CANL) FOR SHORT TO GND

      Tester Connection Condition Specified Condition
      D1-4 (CG) - D1-14 (CANL) Ignition switch OFF 3 kΩ or higher
      Fig 5: Checking CAN Bus Line (CANL) For Short To GND
      G03196940Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG : CHECK CAN BUS LINE (CANL) FOR SHORT TO GND (See  CHECK CAN BUS LINE (CANL) FOR SHORT TO GND   ) 
    2. OK : HOW TO PROCEED WITH TROUBLESHOOTING (See  HOW TO PROCEED WITH TROUBLESHOOTING   ) 
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