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Home >> Toyota >> 2011 >> Highlander Hybrid Limited >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Can Communication System (W/O Smart Key) (Diagnostic Codes & Circuit Tests) (Hybrid) >> CAN COMMUNICATION SYSTEM (w/o Smart Key System) >> Open in CAN Main Wire >> Procedure

Open in CAN Main Wire: Procedure

  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    1. Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the CAN main wire and CAN branch wire.
      WARNING:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      NOTE:

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected, refer to INITIALIZATION .

    NEXT: Go to next step 

  2. CHECK FOR OPEN IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - DLC3) 
    1. Disconnect the D55 No. 2 junction connector.
      Fig 1: Disconnecting D55, D47 No. 2 Junction Connector
      GTY299938Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      D55-4 (CANH) - D47-6 (CANH) Ignition switch off Below 1 Ω
      D55-15 (CANL) - D47-14 (CANL) Ignition switch off Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to No. 2 Junction Connector)
      *b Front view of DLC3

    NG → REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DLC3 (CANH, CANL) 

    OK: Go to next step 

  3. CHECK FOR OPEN IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU) 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 2: Identifying D55 Can Bus Wire No. 2 Junction Connector
      GTY300833Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      D55-1 (CANH) - D55-12 (CANL) Ignition switch off 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to No. 2 Junction Connector)

    NG → See step   7 

    OK: Go to next step 

  4. CHECK FOR OPEN IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - COMBINATION METER ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 3: Identifying D55 Can Bus Wire No. 2 Junction Connector
      GTY300807Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      D55-6 (CANH) - D55-17 (CANL) Ignition switch off 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to No. 2 Junction Connector)

    NG → See step   5 

    OK → REPLACE NO. 2 JUNCTION CONNECTOR 

  5. CONNECT CONNECTOR 
    1. Reconnect the D55 No. 2 junction connector.

    NEXT: Go to next step 

  6. CHECK FOR OPEN IN CAN BUS WIRE (COMBINATION METER ASSEMBLY) 
    1. Disconnect the E1 combination meter assembly connector.
      Fig 4: Disconnecting E1 Combination Meter Assembly Connector
      GTY301095Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      E1-25 (CANH) - E1-26 (CANL) Ignition switch off 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Combination Meter Assembly)

    NG → REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO COMBINATION METER ASSEMBLY (CANH, CANL) 

    OK → See step   12 

  7. CONNECT CONNECTOR 
    1. Reconnect the D55 No. 2 junction connector.

    NEXT: Go to next step 

  8. CHECK FOR OPEN IN CAN BUS WIRE (NO. 1 JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU) 
    1. Disconnect the D59 No. 1 junction connector.
      Fig 5: Identifying D59 No. 1 Junction Connector
      GTY294630Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      D59-7 (CANH) - D59-18 (CANL) Ignition switch off 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to No. 1 Junction Connector)

    NG → See step   10 

    OK: Go to next step 

  9. CHECK FOR OPEN IN CAN BUS WIRE (NO. 1 JUNCTION CONNECTOR - NO. 2 JUNCTION CONNECTOR) 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 6: Identifying D59 No. 1 Junction Connector- No. 2 Junction Connector
      GTY300973Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      D59-5 (CANH) - D59-16 (CANL) Ignition switch off 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to No. 1 Junction Connector)

    NG → REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 1 JUNCTION CONNECTOR - NO. 2 JUNCTION CONNECTOR) 

    OK → REPLACE NO. 1 JUNCTION CONNECTOR 

  10. CONNECT CONNECTOR 
    1. Reconnect the D59 No. 1 junction connector.

    NEXT: Go to next step 

  11. CHECK FOR OPEN IN CAN BUS WIRE (HYBRID VEHICLE CONTROL ECU) 
    1. Disconnect the D73 hybrid vehicle control ECU connector.
      Fig 7: Disconnecting D73 Hybrid Vehicle Control ECU Connector
      GTY305364Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      D73-25 (CA1H) - D73-24 (CA1L) Ignition switch off 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Hybrid Vehicle Control ECU)

    NG → REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO ECM (CANH, CANL) 

    OK → See step   13 

  12. REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL 
  13. REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL 
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