FixVault
Home › Nissan-Datsun › 2004 › Sentra SE-R › Repair and Diagnosis › External Pages › Different car › Section 904 (Can Communication System - Diagnosis) › Check Can Bus Line › Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus ES 330. 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, DLC3 SUB BUS LINE FOR DIS CONNECTION) 
    1. Turn the ignition switch to the LOCK position.
    2. Measure the resistance according to the value(s) in Fig 2.
      Fig 1: Identifying Connector Terminals Of DLC3
      G01437604Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Fig 2: DLC3 Tester Connection Reference Chart
      G01437605Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG-A: CHECK CAN MAIN BUS LINE FOR DISCONNECTION (SEE  CHECK CAN MAIN BUS LINE FOR DISCONNECTION   ) 

    NG-B: CHECK CAN BUS LINES FOR SHORT CIRCUIT (SEE  CHECK CAN BUS LINES FOR SHORT CIRCUIT   ) 

    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 Fig 4 below.
      Fig 3: Identifying Connector Terminals Of DLC3
      G01437607Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Fig 4: DLC3 Tester Connection Reference Chart
      G01437606Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: CHECK CAN BUS LINE (CAN-H) FOR SHORT TO +B (SEE  CHECK CAN BUS LINE (CAN-H) FOR SHORT TO +B   ) 

    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 Fig 6 below.
      Fig 5: Identifying Connector Terminals Of DLC3
      G01437609Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Fig 6: DLC3 Tester Connection Reference Chart
      G01437608Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: CHECK CAN BUS LINE (CAN-L) FOR SHORT TO +B (SEE  CHECK CAN BUS LINE (CAN-L) FOR SHORT TO +B   ) 

    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 Fig 8 below.
      Fig 7: Identifying Connector Terminals Of DLC3
      G01437611Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Fig 8: DLC3 Tester Connection Reference Chart
      G01437610Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: CHECK CAN BUS LINE (CAN-H) FOR SHORT TO GND (SEE  CHECK CAN BUS LINE (CAN-H) FOR SHORT TO GND   ) 

    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 Fig 10 below.
      Fig 9: Identifying Connector Terminals Of DLC3
      G01437613Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Fig 10: DLC3 Tester Connection Reference Chart
      G01437612Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: CHECK CAN BUS LINE (CAN-L) FOR SHORT TO GND (SEE  CHECK CAN BUS LINE (CAN-L) FOR SHORT TO GND   ) 

OK: HOW TO PROCEED WITH TROUBLESHOOTING (SEE  HOW TO PROCEED WITH TROUBLESHOOTING   ) 

About FixVault