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Inspection Procedure: Procedure

WARNING: This page is about a different car, the 2011 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DLC3 
    1. Turn the ignition switch off.
      Fig 1: E11 Connector Terminal Identification
      GTY291891Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      E11-6 (CANH) - E11-14 (CANL) Ignition switch off 108 to 132 Ω
      NOTE:

      When the measured value is 132 Ω or higher and a CAN communication system diagnostic trouble code is output, there may be a fault besides disconnection of the DLC3 branch wire. For that reason, troubleshooting should be performed again from How to Proceed with Troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING after repairing the trouble area.

    NG → REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DLC3 

    OK: Go to next step 

  2. CHECK FOR OPEN IN CAN BUS MAIN WIRE (CAN NO. 2 JUNCTION CONNECTOR) 
    1. Turn the ignition switch off.
      Fig 2: A49 Connector Terminal Identification
      GTY293263Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to CAN No. 2 Junction Connector)
    2. Disconnect the CAN No. 2 junction connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      A49-6 (CANH) - A49-4 (CANL) Ignition switch off 108 to 132 Ω

    NG → See step   6 

    OK: Go to next step 

  3. CHECK FOR OPEN IN CAN BUS MAIN WIRE (ECM) 
    1. Turn the ignition switch off.
    2. Reconnect the CAN No. 2 junction connector.
    3. Disconnect the ECM connector.
    4. Measure the resistance according to the value(s) in the table below.
      Fig 3: CAN BUS Main Wire (ECM) Connector Terminal Identification
      GTY292053Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to ECM)
      *b for 2AZ-FE
      *c for 2ZR-FE

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      A50-41 (CANH) - A50-49 (CANL)*1 Ignition switch off 108 to 132 Ω
      A50-41 (CANH) - A50-49 (CANL)*2 Ignition switch off 108 to 132 Ω

      *1: for 2AZ-FE

      *2: for 2ZR-FE

      Result

      Result Proceed to
      OK (for 2ZR-FE) A
      OK (for 2AZ-FE) B
      NG C

    C → See step   5 

    B → See step   10 

    A → See step   4 

  4. REPLACE ECM. Refer to  REMOVAL 
  5. CHECK FOR OPEN IN CAN BUS MAIN WIRE (CAN NO. 2 JUNCTION CONNECTOR - ECM) 
    1. Reconnect the ECM connector.
      Fig 4: A48 Connector Terminal Identification
      GTY291618Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to CAN No. 2 Junction Connector)
    2. Turn the ignition switch off.
    3. Disconnect the CAN No. 2 junction connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      A48-2 (CANH) - A48-4 (CANL) Ignition switch off 108 to 132 Ω

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

    OK → REPLACE CAN NO. 2 JUNCTION CONNECTOR 

  6. CHECK FOR OPEN IN CAN BUS MAIN WIRE (COMBINATION METER) 
    1. Reconnect the CAN No. 2 junction connector.
      Fig 5: Combination Meter E46 Connector Terminal Identification
      GTY291872Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Combination Meter)
    2. Turn the ignition switch off.
    3. Disconnect the combination meter connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      E46-27 (CANH) - E46-28 (CANL) Ignition switch off 108 to 132 Ω

    NG → See step   8 

    OK → See step   7 

  7. REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL 
  8. CHECK FOR OPEN IN CAN BUS MAIN WIRE (CAN NO. 1 JUNCTION CONNECTOR - COMBINATION METER) 
    1. Reconnect the combination meter connector.
    2. Turn the ignition switch off.
    3. TMC made:
      1. Disconnect the CAN No. 1 junction connector.
        Fig 6: E58 Connector Terminal Identification
        GTY290460Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *a Front view of wire harness connector
        (to CAN No. 1 Junction Connector)
      2. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Switch Condition Specified Condition
        E58-2 (CANH) - E58-13 (CANL) Ignition switch off 108 to 132 Ω
    4. Except TMC made:
      1. Disconnect the CAN No. 1 junction connector.
        Fig 7: E71 Connector Terminal Identification
        GTY294207Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *a Front view of wire harness connector
        (to CAN No. 1 Junction Connector)
      2. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Switch Condition Specified Condition
        E71-4 (CANH) - E71-15 (CANL) Ignition switch off 108 to 132 Ω

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

    OK: Go to next step 

  9. CHECK FOR OPEN IN CAN BUS MAIN WIRE (CAN NO. 1 JUNCTION CONNECTOR - CAN NO. 2 JUNCTION CONNECTOR) 
    1. TMC made:
      1. Disconnect the CAN No. 1 junction connector.
        Fig 8: CAN No. 1 Junction E58 Connector Terminal Identification
        GTY291279Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *a Front view of wire harness connector
        (to CAN No. 1 Junction Connector)
      2. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Switch Condition Specified Condition
        E58-10 (CANH) - E58-21 (CANL) Ignition switch off 108 to 132 Ω
    2. Except TMC made:
      1. Disconnect the CAN No. 1 junction connector.
        Fig 9: CAN No. 1 Junction E71 Connector Terminal Identification
        GTY290845Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *a Front view of wire harness connector
        (to CAN No. 1 Junction Connector)
      2. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Switch Condition Specified Condition
        E71-6 (CANH) - E71-17 (CANL) Ignition switch off 108 to 132 Ω

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

    OK → REPLACE CAN NO. 1 JUNCTION CONNECTOR 

  10. REPLACE ECM. Refer to  REMOVAL 
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