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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 CAN MS BUS WIRE 
    1. Turn the ignition switch off.
      Fig 1: Checking CAN MS BUS Wire
      GTY292185Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (to Main Body ECU)
    2. Measure the resistance according to the value(s) in the table below.

      Result

      Tester Connection Switch Condition Result Proceed to
      E51-11 (CANP) - E51-12 (CANN) Ignition switch off 54 to 69 Ω A
      E51-11 (CANP) - E51-12 (CANN) Ignition switch off 70 Ω or higher B
      E51-11 (CANP) - E51-12 (CANN) Ignition switch off Less than 54 Ω C

    C → See step   9 

    B → See step   5 

    A: Go to next step 

  2. CHECK FOR SHORT TO +B IN CAN MS BUS WIRE 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 2: Checking For Short To +B In CAN MS BUS Wire
      GTY294192Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3
      *a Component with harness connected
      (to Main Body ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      E51-11 (CANP) - E11-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher
      E51-12 (CANN) - E11-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher

    NG → See step   15 

    OK: Go to next step 

  3. CHECK FOR SHORT TO GND IN CAN MS BUS WIRE 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 3: Checking For Short To GND In CAN MS BUS Wire
      GTY293195Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3
      *a Component with harness connected
      (to Main Body ECU)

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      E51-11 (CANP) - E11-4 (CG) Ignition switch off 200 Ω or higher
      E51-12 (CANN) - E11-4 (CG) Ignition switch off 200 Ω or higher

    NG → See step   20 

    OK: Go to next step 

  4. CHECK FOR OPEN IN CAN MS BUS WIRE (CAN MS BUS BRANCH WIRE) 
    1. Check for open in the certification ECU MS bus branch wire. Refer to DTC U0327: Software Incompatibility with Vehicle Security Control Module .

    NG → REPAIR OR REPLACE CAN MS BUS BRANCH WIRE OR CONNECTOR (CAN NO. 3 JUNCTION CONNECTOR - CERTIFICATION ECU) 

    OK → REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU) 

  5. CHECK FOR OPEN IN CAN MS BUS MAIN WIRE (COMBINATION METER MAIN WIRE) 
    1. Disconnect the CAN No. 3 junction connector.
      Fig 4: CAN No. 3 Junction Connector Terminal Identification
      GTY292560Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

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

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      E72-2 (CANH) - E72-7 (CANL) Ignition switch off 108 to 132 Ω

    NG → See step   8 

    OK: Go to next step 

  6. CHECK FOR OPEN IN CAN MS BUS MAIN WIRE (MAIN BODY ECU MAIN WIRE) 
    1. Disconnect the CAN No. 3 junction connector.
      Fig 5: CAN No. 3 Junction Connector Terminal Identification (Main Body ECU)
      GTY292559Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

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

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      E72-3 (CANH) - E72-8 (CANL) Ignition switch off 108 to 132 Ω

    NG → See step   7 

    OK → REPLACE CAN NO. 3 JUNCTION CONNECTOR 

  7. CHECK FOR OPEN IN CAN BUS MAIN WIRE (MAIN BODY ECU - CAN NO. 3 JUNCTION CONNECTOR) 
    1. Reconnect the CAN No. 3 junction connector.
      Fig 6: Main Body ECU - CAN No. 3 Junction Connector Terminal Identification
      GTY293516Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Main Body ECU)
    2. Disconnect the main body ECU connector from the main body ECU.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      E51-11 (CANP) - E51-12 (CANN) Ignition switch off 108 to 132 Ω

    NG → REPAIR OR REPLACE CAN MS BUS MAIN WIRE OR CONNECTOR (CAN NO. 3 JUNCTION CONNECTOR - MAIN BODY ECU) 

    OK → REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU) 

  8. CHECK FOR OPEN IN CAN MS BUS MAIN WIRE (COMBINATION METER - CAN NO. 3 JUNCTION CONNECTOR) 
    1. Reconnect the CAN No. 3 junction connector.
    2. Disconnect the combination meter connector.
      Fig 7: Combination Meter - CAN No. 3 Junction Connector Terminal Identification
      GTY293129Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Combination Meter)
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      E46-13 (TX-) - E46-14 (TX1-) Ignition switch off 108 to 132 Ω

    NG → REPAIR OR REPLACE CAN MS BUS MAIN WIRE OR CONNECTOR (CAN NO. 3 JUNCTION CONNECTOR - COMBINATION METER) 

    OK → See step   25 

  9. CHECK FOR SHORT IN CAN MS BUS WIRES (MAIN BODY ECU MAIN WIRE) 
    1. Disconnect the CAN No. 3 junction connector.
      Fig 8: CAN No. 3 Junction Connector Terminal Identification (Main Body ECU)
      GTY292559Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

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

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      E72-3 (CANH) - E72-8 (CANL) Ignition switch off 108 to 132 Ω

    NG → See step   13 

    OK: Go to next step 

  10. CHECK FOR SHORT IN CAN MS BUS WIRES (COMBINATION METER MAIN WIRE) 
    1. Disconnect the CAN No. 3 junction connector.
      Fig 9: CAN No. 3 Junction Connector Terminal Identification
      GTY292560Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

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

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      E72-2 (CANH) - E72-7 (CANL) Ignition switch off 108 to 132 Ω

    NG → See step   14 

    OK: Go to next step 

  11. CHECK FOR SHORT IN CAN MS BUS WIRES (CAN NO. 3 JUNCTION CONNECTOR - CERTIFICATION ECU) 
    1. Disconnect the certification ECU connector.
      Fig 10: CAN No. 3 Junction Connector Terminal Identification (Certification ECU)
      GTY294035Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Certification ECU)
    2. Disconnect the CAN No. 3 junction connector.
      Fig 11: CAN No. 3 Junction Connector Terminal Identification
      GTY292561Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

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

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      E72-1 (CANH) - E72-6 (CANL) Ignition switch off 1 MΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (CAN NO. 3 JUNCTION CONNECTOR - CERTIFICATION ECU) 

    OK: Go to next step 

  12. CHECK FOR SHORT IN CAN MS BUS WIRES (CAN No. 3 JUNCTION CONNECTOR) 
    1. Reconnect the CAN No. 3 junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      Fig 12: E36 Connector Terminal Identification
      GTY294035Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Certification ECU)
      NOTE:

      The resistance must be measured after the main body ECU, combination meter and No. 3 junction connectors are reconnected.

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      E36-27 (CANH) - E36-28 (CANL) Ignition switch off 54 Ω or higher

    NG → REPLACE CAN NO. 3 JUNCTION CONNECTOR 

    OK → REPLACE CERTIFICATION ECU 

  13. CHECK FOR SHORT IN CAN BUS MAIN WIRE (MAIN BODY ECU - CAN NO. 3 JUNCTION CONNECTOR) 
    1. Disconnect the main body ECU connector from the main body ECU.
    2. Reconnect the CAN No. 3 junction connector.
      Fig 13: Main Body ECU - CAN No. 3 Junction Connector Terminal Identification
      GTY293516Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Main Body ECU)
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      E51-11 (CANP) - E51-12 (CANN) Ignition switch off 108 to 132 Ω

    NG → REPAIR OR REPLACE CAN MS BUS MAIN WIRE OR CONNECTOR (CAN NO. 3 JUNCTION CONNECTOR - MAIN BODY ECU) 

    OK → REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU) 

  14. CHECK FOR SHORT IN CAN MS BUS WIRES (COMBINATION METER - CAN NO. 3 JUNCTION CONNECTOR) 
    1. Disconnect the combination meter connector.
    2. Reconnect the CAN No. 3 junction connector.
      Fig 14: Combination Meter - CAN No. 3 Junction Connector Terminal Identification
      GTY293129Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Combination Meter)
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      E46-13 (TX-) - E46-14 (TX1-) Ignition switch off 108 to 132 Ω

    NG → REPAIR OR REPLACE CAN MS BUS MAIN WIRE OR CONNECTOR (CAN NO. 3 JUNCTION CONNECTOR - COMBINATION METER) 

    OK → See step   25 

  15. CHECK FOR SHORT TO +B IN CAN MS BUS WIRE (MAIN BODY ECU MAIN WIRE) 
    1. Disconnect the CAN No. 3 junction connector.
      Fig 15: CAN No. 3 Junction Connector Terminal Identification (Main Body ECU)
      GTY292559Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to CAN No. 3 Junction Connector)
    2. Measure the resistance according to the value(s) in the table below.
      Fig 16: E11 Connector Terminal Identification
      GTY293005Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3

      Standard Resistance

      Tester Connection Condition Specified Condition
      E72-3 (CANH) - E11-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher
      E72-8 (CANL) - E11-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher

    NG → See step   18 

    OK: Go to next step 

  16. CHECK FOR SHORT TO +B IN CAN MS BUS WIRE (COMBINATION METER MAIN WIRE) 
    1. Disconnect the CAN No. 3 junction connector.
      Fig 17: CAN No. 3 Junction Connector Terminal Identification
      GTY292560Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to CAN No. 3 Junction Connector)
    2. Measure the resistance according to the value(s) in the table below.
      Fig 18: E11 Connector Terminal Identification
      GTY293005Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3

      Standard Resistance

      Tester Connection Condition Specified Condition
      E72-2 (CANH) - E11-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher
      E72-7(CANL) - E11-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher

    NG → See step   19 

    OK: Go to next step 

  17. CHECK FOR SHORT TO +B IN CAN MS BUS WIRE (CAN NO. 3 JUNCTION CONNECTOR - CERTIFICATION ECU) 
    1. Disconnect the certification ECU connector.
    2. Disconnect the CAN No. 3 junction connector.
      Fig 19: CAN No. 3 Junction Connector Terminal Identification
      GTY292561Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to CAN No. 3 Junction Connector)
    3. Measure the resistance according to the value(s) in the table below.
      Fig 20: E11 Connector Terminal Identification
      GTY293005Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3

      Standard Resistance

      Tester Connection Condition Specified Condition
      E72-1 (CANH) - E11-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher
      E72-6 (CANL) - E11-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher

    NG → REPAIR OR REPLACE CAN MS BUS BRANCH WIRE OR CONNECTOR (CAN NO. 3 JUNCTION CONNECTOR - CERTIFICATION ECU) 

    OK → REPLACE CERTIFICATION ECU 

  18. CHECK FOR SHORT TO +B IN CAN MS BUS WIRE (CAN NO. 3 JUNCTION CONNECTOR - MAIN BODY ECU) 
    1. Disconnect the main body ECU connector from the main body ECU.
      Fig 21: CAN No. 3 Junction Connector Terminal Identification (Main Body ECU)
      GTY292559Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to CAN No. 3 Junction Connector)
    2. Measure the resistance according to the value(s) in the table below.
      Fig 22: E11 Connector Terminal Identification
      GTY293005Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3

      Standard Resistance

      Tester Connection Condition Specified Condition
      E72-3 (CANH) - E11-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher
      E72-8 (CANL) - E11-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher

    NG → REPAIR OR REPLACE CAN MS BUS MAIN WIRE OR CONNECTOR (CAN NO. 3 JUNCTION CONNECTOR - MAIN BODY ECU) 

    OK → REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU) 

  19. CHECK FOR SHORT TO +B IN CAN MS BUS WIRE (CAN NO. 3 JUNCTION CONNECTOR - COMBINATION METER) 
    1. Disconnect the CAN No. 3 junction connector.
      Fig 23: CAN No. 3 Junction Connector Terminal Identification
      GTY292560Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to CAN No. 3 Junction Connector)
    2. Disconnect the combination meter connector.
    3. Measure the resistance according to the value(s) in the table below.
      Fig 24: E11 Connector Terminal Identification
      GTY293005Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3

      Standard Resistance

      Tester Connection Condition Specified Condition
      E72-2 (CANH) - E11-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher
      E72-7 (CANL) - E11-16 (BAT) Cable is disconnected from negative (-) battery terminal 6 kΩ or higher

    NG → REPAIR OR REPLACE CAN MS BUS MAIN WIRE OR CONNECTOR (CAN NO. 3 JUNCTION CONNECTOR - COMBINATION METER) 

    OK → See step   25 

  20. CHECK FOR SHORT TO GND IN CAN MS BUS WIRE (MAIN BODY ECU MAIN WIRE) 
    1. Disconnect the CAN No. 3 junction connector.
      Fig 25: CAN No. 3 Junction Connector Terminal Identification (Main Body ECU)
      GTY292559Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to CAN No. 3 Junction Connector)
    2. Measure the resistance according to the value(s) in the table below.
      Fig 26: E11 Connector Terminal Identification
      GTY293004Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      E72-3 (CANH) - E11-4 (CG) Ignition switch off 200 Ω or higher
      E72-8 (CANL) - E11-4 (CG) Ignition switch off 200 Ω or higher

    NG → See step   24 

    OK: Go to next step 

  21. CHECK FOR SHORT TO GND IN CAN MS BUS WIRE (COMBINATION METER MAIN WIRE) 
    1. Disconnect the CAN No. 3 junction connector.
      Fig 27: CAN No. 3 Junction Connector Terminal Identification
      GTY292560Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to CAN No. 3 Junction Connector)
    2. Measure the resistance according to the value(s) in the table below.
      Fig 28: E11 Connector Terminal Identification
      GTY293004Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      E72-2 (CANH) - E11-4 (CG) Ignition switch off 200 Ω or higher
      E72-7 (CANL) - E11-4 (CG) Ignition switch off 200 Ω or higher

    NG → See step   23 

    OK: Go to next step 

  22. CHECK FOR SHORT TO GND IN CAN MS BUS WIRE (CAN NO. 3 JUNCTION CONNECTOR - CERTIFICATION ECU) 
    1. Disconnect the certification ECU connector.
    2. Disconnect the CAN No. 3 junction connector.
      Fig 29: CAN No. 3 Junction Connector Terminal Identification
      GTY292561Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to CAN No. 3 Junction Connector)
    3. Measure the resistance according to the value(s) in the table below.
      Fig 30: E11 Connector Terminal Identification
      GTY293004Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      E72-1 (CANH) - E11-4 (CG) Ignition switch off 200 Ω or higher
      E72-6 (CANL) - E11-4 (CG) Ignition switch off 200 Ω or higher

    NG → REPAIR OR REPLACE CAN MS BUS BRANCH WIRE OR CONNECTOR (CAN NO. 3 JUNCTION CONNECTOR - CERTIFICATION ECU) 

    OK → REPLACE CERTIFICATION ECU 

  23. CHECK FOR SHORT TO GND IN CAN MS BUS WIRE (CAN NO. 3 JUNCTION CONNECTOR - COMBINATION METER) 
    1. Disconnect the combination meter connector.
      Fig 31: CAN No. 3 Junction Connector Terminal Identification
      GTY292560Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to CAN No. 3 Junction Connector)
    2. Measure the resistance according to the value(s) in the table below.
      Fig 32: E11 Connector Terminal Identification
      GTY293004Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      E72-2 (CANH) - E11-4 (CG) Ignition switch off 200 Ω or higher
      E72-7 (CANL) - E11-4 (CG) Ignition switch off 200 Ω or higher

    NG → REPAIR OR REPLACE CAN MS BUS MAIN WIRE OR CONNECTOR (CAN NO. 3 JUNCTION CONNECTOR - COMBINATION METER) 

    OK → See step   25 

  24. CHECK FOR SHORT TO GND IN CAN MS BUS WIRE (CAN NO. 3 JUNCTION CONNECTOR - MAIN BODY ECU) 
    1. Disconnect the main body ECU connector from the main body ECU.
      Fig 33: CAN No. 3 Junction Connector Terminal Identification (Main Body ECU)
      GTY292559Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to CAN No. 3 Junction Connector)
    2. Measure the resistance according to the value(s) in the table below.
      Fig 34: E11 Connector Terminal Identification
      GTY293004Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      E72-3 (CANH) - E11-4 (CG) Ignition switch off 200 Ω or higher
      E72-8 (CANL) - E11-4 (CG) Ignition switch off 200 Ω or higher

    NG → REPAIR OR REPLACE CAN MS BUS MAIN WIRE OR CONNECTOR (CAN NO. 3 JUNCTION CONNECTOR - MAIN BODY ECU) 

    OK → REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU) 

  25. REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL 
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