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Home >> Toyota >> 2017 >> Camry LE >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Can Communication System (Diagnostic Codes (U0104-U1002) & Symptom Tests) (Except Hybrid) >> Can Communication System >> DTC U1002: Lost Communication with Gateway Module (Network Gateway ECU); DTC U0265: Lost Communication with Parking Assist Monitor Module [08/2015 - ] >> Procedure

DTC U1002: Lost Communication with Gateway Module (Network Gateway ECU); DTC U0265: Lost Communication with Parking Assist Monitor Module [08/2015 - ]: Procedure

  1. CHECK VEHICLE TYPE 
    1. Check vehicle type.

      Result

      Result Proceed to
      w/o Pre-collision system A
      w/ Pre-collision system B

    B → See step   32 

    A: Go to next step 

  2. CHECK SUB BUS 2 
    1. Disconnect the cable from the negative (-) battery terminal.
    2. Measure the resistance according to the value(s) in the table below.
      GTY320087Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition Result
      I81-13 (CA2H) - I81-12 (CA2L) Cable disconnected from negative (-) battery terminal 54 to 69 Ω Below 54 Ω:
      Short circuit between bus lines
      70 Ω or higher:
      Open circuit in main bus lines
      I81-13 (CA2H) - I81-4 (GND) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short
      I81-12 (CA2L) - I81-4 (GND) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      I81-13 (CA2H) - I81-2 (BATT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short
      I81-12 (CA2L) - I81-2 (BATT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (Network Gateway ECU)

      Result

      Result Proceed to
      OK A
      Open circuit in CAN main bus lines B
      Short circuit between bus lines C
      • Ground short
      • +B short
      		 D

    B → See step   14 

    C → See step   20 

    D → See step   26 

    A: Go to next step 

  3. CHECK VEHICLE TYPE 
    1. Check vehicle type.

      Result

      Result Proceed to
      w/ Parking assist monitor system A
      w/ Blind spot monitor system B

    B → See step   9 

    A: Go to next step 

  4. CHECK FOR OPEN IN SUB BUS 2 BRANCH LINES (REAR TELEVISION CAMERA ASSEMBLY) 
    1. Disconnect the T23 rear television camera assembly connector.
      GTY477384Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      T23-4 (CANH) - T23-1 (CANL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Rear Television Camera Assembly)

    NG → REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (CAN NO. 6 J/C - REAR TELEVISION CAMERA ASSEMBLY) 

    OK: Go to next step 

  5. CHECK FOR DTC OUTPUT (PARKING ASSIST MONITOR SYSTEM) 
    1. Reconnect the T23 rear television camera assembly connector.
    2. Reconnect the cable to the negative (-) battery terminal.
    3. Connect the Techstream to the DLC3.
    4. Turn the ignition switch to ON.
    5. Turn the Techstream on.
    6. Clear the DTCs.
    7. Turn the ignition switch off.
    8. Turn the ignition switch to ON.
    9. Turn the Techstream on.
    10. Enter the following menus: Chassis / Advanced Parking Guidance/Parking Assist Monitor / Trouble Codes.

      Result

      Result Proceed to
      DTC C1621 is not output from the rear television camera assembly.
      (Techstream display: Advanced Parking Guidance/Parking Assist Monitor)      		 A
      DTC C1621 is output from the rear television camera assembly.
      (Techstream display: Advanced Parking Guidance/Parking Assist Monitor)      		 B

    B → See step   52 

    A: Go to next step 

  6. CHECK FOR DTC OUTPUT 
    1. Enter the following menus: Body Electrical / Gateway / Trouble Codes.

      Result

      Result Proceed to
      DTC U1002 is not output from the network gateway ECU.
      (Techstream display: Gateway)      		 A
      DTC U1002 is output from the network gateway ECU.
      (Techstream display: Gateway)      		 B

    B → See step   7 

    A → See step   53 

  7. REPLACE NETWORK GATEWAY ECU 
    1. Replace the network gateway ECU. Refer to REMOVAL [08/2015 - ] .

    NEXT: Go to next step 

  8. CHECK FOR DTC OUTPUT 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Clear the DTCs.
    5. Turn the ignition switch off.
    6. Turn the ignition switch to ON.
    7. Turn the Techstream on.
    8. Enter the following menus: Body Electrical / Gateway / Trouble Codes.

      Result

      Result Proceed to
      DTC U1002 is not output from the network gateway ECU.
      (Techstream display: Gateway)      		 A
      DTC U1002 is output from the network gateway ECU.
      (Techstream display: Gateway)      		 B

    B → See step   54 

    A → END 

  9. CHECK FOR OPEN IN SUB BUS 2 BRANCH LINES (BLIND SPOT MONITOR SENSOR RH) 
    1. Disconnect the O28 blind spot monitor sensor RH connector.
      GTY472675Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      O28-2 (CA1P) - O28-7 (CA1N) Cable disconnected from negative (-) battery terminal 54 to 69 Ω
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Blind Spot Monitor Sensor RH)

    NG → REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (CAN NO. 3 J/C - BLIND SPOT MONITOR SENSOR RH) 

    OK: Go to next step 

  10. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY472646Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      O28-10 (BRGD) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Blind Spot Monitor Sensor RH)
    2. Reconnect the cable to the negative (-) battery terminal.
    3. Measure the voltage according to the value(s) in the table below.
      GTY472775Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Voltage

      Tester Connection Condition Specified Condition
      O28-5 (BRB) - Body ground Ignition switch ON 11 to 14 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Blind Spot Monitor Sensor RH)

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH) 

    OK: Go to next step 

  11. CHECK FOR DTC OUTPUT 
    1. Enter the following menus: Body Electrical / Gateway / Trouble Codes.

      Result

      Result Proceed to
      DTC U1002 is not output from the network gateway ECU.
      (Techstream display: Gateway)      		 A
      DTC U1002 is output from the network gateway ECU.
      (Techstream display: Gateway)      		 B

    B → See step   12 

    A → See step   53 

  12. REPLACE NETWORK GATEWAY ECU 
    1. Replace the network gateway ECU. Refer to REMOVAL [08/2015 - ] .

    NEXT: Go to next step 

  13. CHECK FOR DTC OUTPUT 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Clear the DTCs.
    5. Turn the ignition switch off.
    6. Turn the ignition switch to ON.
    7. Turn the Techstream on.
    8. Enter the following menus: Body Electrical / Gateway / Trouble Codes.

      Result

      Result Proceed to
      DTC U1002 is not output from the network gateway ECU.
      (Techstream display: Gateway)      		 A
      DTC U1002 is output from the network gateway ECU.
      (Techstream display: Gateway)      		 B

    B → See step   55 

    A → END 

  14. CHECK FOR OPEN IN SUB BUS 2 MAIN LINES (NETWORK GATEWAY ECU) 
    1. Disconnect the I81 network gateway ECU connector.
      GTY321974Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I81-13 (CA2H) - I81-12 (CA2L) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Network Gateway ECU)

    NG → See step   15 

    OK → See step   51 

  15. CHECK FOR OPEN IN SUB BUS 2 MAIN LINES (CAN NO. 3 J/C) 
    1. Reconnect the I81 network gateway ECU connector.
    2. Disconnect the O30 CAN No. 3 junction connector.
      GTY316361Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      O30-10 (CANH) - O30-21 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω CAN No. 6 junction connector*1
      CAN No. 5 junction connector*2
      O30-11 (CANH) - O30-22 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω CAN No. 7 junction connector

      *1: w/ Parking Assist Monitor System

      *2: w/ Blind Spot Monitor System

      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to CAN No. 3 Junction Connector)
      *b to CAN No. 6 Junction Connector (w/ Parking Assist Monitor System)
      to CAN No. 5Junction Connector (w/ Blind Spot Monitor System)
      *c to CAN No. 7 Junction Connector

      Result

      Result Proceed to
      OK A
      NG (to CAN No. 6 junction connector main bus lines) B
      NG (to CAN No. 5 junction connector main bus lines) C
      NG (to CAN No. 7 junction connector main bus lines) D

    B → See step   16 

    C → See step   18 

    D → See step   19 

    A → REPLACE CAN NO. 3 JUNCTION CONNECTOR 

  16. CHECK FOR OPEN IN SUB BUS 2 MAIN LINES (CAN NO. 6 J/C) 
    1. Reconnect the O30 CAN No. 3 junction connector.
    2. Disconnect the T24 CAN No. 6 junction connector.
      GTY476815Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      T24-9 (CANH) - T24-20 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω CAN No. 5 junction connector
      T24-11 (CANH) - T24-22 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω CAN No. 3 junction connector
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to CAN No. 6 Junction Connector)
      *b to CAN No. 5 Junction Connector
      *c to CAN No. 3 Junction Connector

      Result

      Result Proceed to
      OK A
      NG (to CAN No. 5 junction connector main bus lines) B
      NG (to CAN No. 3 junction connector main bus lines) C

    B → See step   17 

    C → REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CAN NO. 3 J/C - CAN NO. 6 J/C) 

    A → REPLACE CAN NO. 6 JUNCTION CONNECTOR 

  17. CHECK FOR OPEN IN SUB BUS 2 MAIN LINES (CAN NO. 5 J/C) 
    1. Reconnect the T24 CAN No. 6 junction connector.
    2. Disconnect the T16 CAN No. 5 junction connector.
      GTY474078Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      T16-3 (CANH) - T16-2 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to CAN No. 5 Junction Connector)

    NG → REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CAN NO. 5 J/C - CAN NO. 6 J/C) 

    OK → REPLACE CAN NO. 5 JUNCTION CONNECTOR 

  18. CHECK FOR OPEN IN SUB BUS 2 MAIN LINES (CAN NO. 5 J/C) 
    1. Reconnect the O30 CAN No. 3 junction connector.
    2. Disconnect the T16 CAN No. 5 junction connector.
      GTY474078Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      T16-3 (CANH) - T16-2 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to CAN No. 5 Junction Connector)

    NG → REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CAN NO. 3 J/C - CAN NO. 5 J/C) 

    OK → REPLACE CAN NO. 5 JUNCTION CONNECTOR 

  19. CHECK FOR OPEN IN SUB BUS 2 MAIN LINES (CAN NO. 7 J/C) 
    1. Reconnect the O30 CAN No. 3 junction connector.
    2. Disconnect the I192 and I193 wire harness connectors.
      GTY473761Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      I192-1 (CANH) - I192-2 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Network gateway ECU
      I193-1 (CANH) - I193-2 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω CAN No. 3 junction connector
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to CAN No. 7 Junction Connector)
      *b to CAN No. 3 Junction Connector
      *c to Network Gateway ECU

      Wiring Color

      Code Color
      CANH Side      		 Color
      CANL Side      		 Connected to
      I192 B LG Network gateway ECU
      I193 G LG CAN No. 3 junction connector

      Result

      Result Proceed to
      OK A
      NG (to CAN No. 3 junction connector main bus lines) B
      NG (to network gateway ECU main bus lines) C
      NOTE:
      • Before disconnecting the connectors, make a note of where they are connected.
      • Reconnect each connector to its original position.

    B → REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CAN NO. 3 J/C - CAN NO. 7 J/C) 

    C → REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CAN NO. 7 J/C - NETWORK GATEWAY ECU) 

    A → REPLACE CAN NO. 7 JUNCTION CONNECTOR 

  20. CHECK FOR SHORT IN SUB BUS 2 LINES (NETWORK GATEWAY ECU) 
    1. Disconnect the I81 network gateway ECU connector.
      GTY321974Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I81-13 (CA2H) - I81-12 (CA2L) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Network Gateway ECU)

    NG → See step   21 

    OK → See step   51 

  21. CHECK FOR SHORT IN SUB BUS 2 LINES (CAN NO. 3 J/C) 
    1. Reconnect the I81 network gateway ECU connector.
    2. Disconnect the O30 CAN No. 3 junction connector.
      GTY476827Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      O30-9 (CA1P) - O30-20 (CA1N) Cable disconnected from negative (-) battery terminal 200 Ω or higher Blind spot monitor sensor RH*1
      O30-10 (CANH) - O30-21 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω CAN No. 6 junction connector*2
      CAN No. 5 junction connector*1
      O30-11 (CANH) - O30-22 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω CAN No. 7 junction connector

      *1: w/ Blind Spot Monitor System

      *2: w/ Parking Assist Monitor System

      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to CAN No. 3 Junction Connector)
      *b to Blind Spot Monitor Sensor RH (w/ Blind Spot Monitor System)
      *c to CAN No. 6 Junction Connector (w/ Parking Assist Monitor System)
      to CAN No. 5Junction Connector (w/ Blind Spot Monitor System)
      *d to CAN No. 7 Junction Connector

      Result

      Result Proceed to
      OK A
      NG (to CAN No. 6 junction connector main bus lines) B
      NG (to CAN No. 5 junction connector main bus lines) C
      NG (to CAN No. 7 junction connector main bus lines) D
      NG (to Blind spot monitor sensor RH) E

    B → See step   22 

    C → See step   24 

    D → See step   25 

    E → See step   44 

    A → REPLACE CAN NO. 3 JUNCTION CONNECTOR 

  22. CHECK FOR SHORT IN SUB BUS 2 LINES (CAN NO. 6 J/C) 
    1. Reconnect the O30 CAN No. 3 junction connector.
    2. Disconnect the T24 CAN No. 6 junction connector.
      GTY476814Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      T24-9 (CANH) - T24-20 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω CAN No. 5 junction connector
      T24-10 (CANH) - T24-21 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher Rear television camera assembly
      T24-11 (CANH) - T24-22 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω CAN No. 3 junction connector
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to CAN No. 6 Junction Connector)
      *b to CAN No. 5 Junction Connector
      *c to Rear Television Camera Assembly
      *d to CAN No. 3 Junction Connector

      Result

      Result Proceed to
      OK A
      NG (to CAN No. 5 junction connector main bus lines) B
      NG (to rear television camera assembly branch lines) C
      NG (to CAN No. 3 junction connector main bus lines) D

    B → See step   23 

    C → See step   44 

    D → REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CAN NO. 3 J/C - CAN NO. 6 J/C) 

    A → REPLACE CAN NO. 6 JUNCTION CONNECTOR 

  23. CHECK FOR SHORT IN SUB BUS 2 LINES (CAN NO. 5 J/C) 
    1. Reconnect the T24 CAN No. 6 junction connector.
    2. Disconnect the T16 CAN No. 5 junction connector.
      GTY474078Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      T16-3 (CANH) - T16-2 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to CAN No. 5 Junction Connector)

    NG → REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CAN NO. 5 J/C - CAN NO. 6 J/C) 

    OK → REPLACE CAN NO. 5 JUNCTION CONNECTOR 

  24. CHECK FOR SHORT IN SUB BUS 2 LINES (CAN NO. 5 J/C) 
    1. Reconnect the O30 CAN No. 3 junction connector.
    2. Disconnect the T16 CAN No. 5 junction connector.
      GTY474078Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      T16-3 (CANH) - T16-2 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to CAN No. 5 Junction Connector)

    NG → REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CAN NO. 3 J/C - CAN NO. 5 J/C) 

    OK → REPLACE CAN NO. 5 JUNCTION CONNECTOR 

  25. CHECK FOR SHORT IN SUB BUS 2 LINES (CAN NO. 7 J/C) 
    1. Reconnect the O30 CAN No. 3 junction connector.
    2. Disconnect the I192 and I193 wire harness connectors.
      GTY473761Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      I192-1 (CANH) - I192-2 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Network gateway ECU
      I193-1 (CANH) - I193-2 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω CAN No. 3 junction connector
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to CAN No. 7 Junction Connector)
      *b to CAN No. 3 Junction Connector
      *c to Network Gateway ECU

      Wiring Color

      Code Color
      CANH Side      		 Color
      CANL Side      		 Connected to
      I192 B LG Network gateway ECU
      I193 G LG CAN No. 3 junction connector

      Result

      Result Proceed to
      OK A
      NG (to CAN No. 3 junction connector main bus lines) B
      NG (to network gateway ECU main bus lines) C
      NOTE:
      • Before disconnecting the connectors, make a note of where they are connected.
      • Reconnect each connector to its original position.

    B → REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CAN NO. 3 J/C - CAN NO. 7 J/C) 

    C → REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CAN NO. 7 J/C - NETWORK GATEWAY ECU) 

    A → REPLACE CAN NO. 7 JUNCTION CONNECTOR 

  26. CHECK FOR SHORT IN SUB BUS 2 LINE (NETWORK GATEWAY ECU) 
    1. Disconnect the I81 network gateway ECU connector.
      GTY315219Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Result
      I81-13 (CA2H) - I81-4 (GND) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short
      I81-12 (CA2L) - I81-4 (GND) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      I81-13 (CA2H) - I81-2 (BATT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short
      I81-12 (CA2L) - I81-2 (BATT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Network Gateway ECU)

    NG → See step   27 

    OK → See step   51 

  27. CHECK FOR SHORT IN SUB BUS 2 LINE (CAN NO. 3 J/C) 
    1. Reconnect the I81 network gateway ECU connector.
    2. Disconnect the O30 CAN No. 3 junction connector.
      GTY475871Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3 - -
      *a Front view of wire harness connector
      (to CAN No. 3 Junction Connector)      		 *b to Blind Spot Monitor Sensor RH
      (w/ Blind Spot Monitor System)
      *c to CAN No. 6 Junction Connector (w/ Parking Assist Monitor System)
      to CAN No. 5Junction Connector (w/ Blind Spot Monitor System)      		 *d to CAN No. 7 Junction Connector
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Result Connected to
      O30-9 (CA1P) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short      		 Blind spot monitor sensor RH*1
      O30-20 (CA1N) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      O30-10 (CANH) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short      		 CAN No. 6 junction connector*2
      CAN No. 5 junction connector*1
      O30-21 (CANL) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      O30-11 (CANH) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short      		 CAN No. 7 junction connector
      O30-22 (CANL) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      O30-9 (CA1P) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short      		 Blind spot monitor sensor RH*1
      O30-20 (CA1N) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      O30-10 (CANH) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short      		 CAN No. 6 junction connector*2
      CAN No. 5 junction connector*1
      O30-21 (CANL) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      O30-11 (CANH) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short      		 CAN No. 7 junction connector
      O30-22 (CANL) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short

      *1: w/ Blind Spot Monitor System

      *2: w/ Parking Assist Monitor System

      Result

      Result Proceed to
      OK A
      NG (to CAN No. 6 junction connector main bus line) B
      NG (to CAN No. 5 junction connector main bus line) C
      NG (to CAN No. 7 junction connector main bus line) D
      NG (to Blind spot monitor sensor RH) E

      HINT: 

      • It is only necessary to perform the inspection in the above table for the result (short circuit) that was obtained in the Check Sub Bus 2 inspection.
      • Find the necessary inspection from the Result column that matches the result in the Result column from the Check Sub Bus 2 inspection.

    B → See step   28 

    C → See step   30 

    D → See step   31 

    E → See step   50 

    A → REPLACE CAN NO. 3 JUNCTION CONNECTOR 

  28. CHECK FOR SHORT IN SUB BUS 2 LINE (CAN NO. 6 J/C) 
    1. Reconnect the O30 CAN No. 3 junction connector.
    2. Disconnect the T24 CAN No. 6 junction connector.
      GTY475864Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3 - -
      *a Front view of wire harness connector
      (to CAN No. 6 Junction Connector)      		 *b to CAN No. 5 Junction Connector
      *c to Rear Television Camera Assembly *d to CAN No. 3 Junction Connector
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Result Connected to
      T24-9 (CANH) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short      		 CAN No. 5 junction connector
      T24-20 (CANL) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      T24-10 (CANH) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short      		 Rear television camera assembly
      T24-21 (CANL) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      T24-11 (CANH) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short      		 CAN No. 3 junction connector
      T24-22 (CANL) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      T24-9 (CANH) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short      		 CAN No. 5 junction connector
      T24-20 (CANL) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      T24-10 (CANH) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short      		 Rear television camera assembly
      T24-21 (CANL) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      T24-11 (CANH) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short      		 CAN No. 3 junction connector
      T24-22 (CANL) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short

      Result

      Result Proceed to
      OK A
      NG (to CAN No. 5 junction connector main bus line) B
      NG (to rear television camera assembly branch line) C
      NG (to CAN No. 3 junction connector main bus line) D

      HINT: 

      • It is only necessary to perform the inspection in the above table for the result (short circuit) that was obtained in the Check Sub Bus 2 inspection.
      • Find the necessary inspection from the Result column that matches the result in the Result column from the Check Sub Bus 2 inspection.

    B → See step   29 

    C → See step   50 

    D → REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (CAN NO. 3 J/C - CAN NO. 6 J/C) 

    A → REPLACE CAN NO. 6 JUNCTION CONNECTOR 

  29. CHECK FOR SHORT IN SUB BUS 2 LINE (CAN NO. 5 J/C) 
    1. Reconnect the T24 CAN No. 6 junction connector.
    2. Disconnect the T16 CAN No. 5 junction connector.
      GTY477983Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Result
      T16-3 (CANH) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short
      T16-2 (CANL) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      T16-3 (CANH) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short
      T16-2 (CANL) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      TEXT IN ILLUSTRATION

      *1 DLC3
      *a Front view of wire harness connector
      (to CAN No. 5 Junction Connector)

      HINT: 

      • It is only necessary to perform the inspection in the above table for the result (short circuit) that was obtained in the Check Sub Bus 2 inspection.
      • Find the necessary inspection from the Result column that matches the result in the Result column from the Check Sub Bus 2 inspection.

    NG → REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (CAN NO. 5 J/C - CAN NO. 6 J/C) 

    OK → REPLACE CAN NO. 5 JUNCTION CONNECTOR 

  30. CHECK FOR SHORT IN SUB BUS 2 LINE (CAN NO. 5 J/C) 
    1. Reconnect the O30 CAN No. 3 junction connector.
    2. Disconnect the T16 CAN No. 5 junction connector.
      GTY477983Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Result
      T16-3 (CANH) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short
      T16-2 (CANL) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      T16-3 (CANH) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short
      T16-2 (CANL) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      TEXT IN ILLUSTRATION

      *1 DLC3
      *a Front view of wire harness connector
      (to CAN No. 5 Junction Connector)

      HINT: 

      • It is only necessary to perform the inspection in the above table for the result (short circuit) that was obtained in the Check Sub Bus 2 inspection.
      • Find the necessary inspection from the Result column that matches the result in the Result column from the Check Sub Bus 2 inspection.

    NG → REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (CAN NO. 3 J/C - CAN NO. 5 J/C) 

    OK → REPLACE CAN NO. 5 JUNCTION CONNECTOR 

  31. CHECK FOR SHORT IN SUB BUS 2 LINE (CAN NO. 7 J/C) 
    1. Reconnect the O30 CAN No. 3 junction connector.
    2. Disconnect the I192 and I193 wire harness connectors.
      GTY474959Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3 - -
      *a Rear view of wire harness connector
      (to CAN No. 7 Junction Connector)      		 *b to CAN No. 3 Junction Connector
      *c to Network Gateway ECU - -
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Result Connected to
      I192-1 (CANH) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short      		 Network gateway ECU
      I192-2 (CANL) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      I193-1 (CANH) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short      		 CAN No. 3 junction connector
      I193-2 (CANL) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      I192-1 (CANH) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short      		 Network gateway ECU
      I192-2 (CANL) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      I193-1 (CANH) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short      		 CAN No. 3 junction connector
      I193-2 (CANL) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short

      Wiring Color

      Code Color
      CANH Side      		 Color
      CANL Side      		 Connected to
      I192 B LG Network gateway ECU
      I193 G LG CAN No. 3 junction connector

      Result

      Result Proceed to
      OK A
      NG (to CAN No. 3 junction connector main bus line) B
      NG (to network gateway ECU main bus line) C
      NOTE:
      • Before disconnecting the connectors, make a note of where they are connected.
      • Reconnect each connector to its original position.

      HINT: 

      • It is only necessary to perform the inspection in the above table for the result (short circuit) that was obtained in the Check Sub Bus 2 inspection.
      • Find the necessary inspection from the Result column that matches the result in the Result column from the Check Sub Bus 2 inspection.

    B → REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (CAN NO. 3 J/C - CAN NO. 7 J/C) 

    C → REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (CAN NO. 7 J/C - NETWORK GATEWAY ECU) 

    A → REPLACE CAN NO. 7 JUNCTION CONNECTOR 

  32. CHECK SUB BUS 2 
    1. Disconnect the cable from the negative (-) battery terminal.
    2. Measure the resistance according to the value(s) in the table below.
      GTY320087Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition Result
      I81-13 (CA2H) - I81-12 (CA2L) Cable disconnected from negative (-) battery terminal 54 to 69 Ω Below 54 Ω:
      Short circuit between bus lines
      70 Ω or higher:
      Open circuit in main bus lines
      I81-13 (CA2H) - I81-4 (GND) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short
      I81-12 (CA2L) - I81-4 (GND) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      I81-13 (CA2H) - I81-2 (BATT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short
      I81-12 (CA2L) - I81-2 (BATT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (Network Gateway ECU)

      Result

      Result Proceed to
      OK A
      Open circuit in CAN main bus lines B
      Short circuit between bus lines C
      • Ground short
      • +B short
      		 D

    B → See step   34 

    C → See step   39 

    D → See step   45 

    A: Go to next step 

  33. RECONFIRM DTC OUTPUT 
    1. Reconnect the cable to the negative (-) battery terminal.
    2. Connect the Techstream to the DLC3.
    3. Turn the ignition switch to ON.
    4. Turn the Techstream on.
    5. Clear the DTCs.
    6. Turn the ignition switch off.
    7. Turn the ignition switch to ON and recheck for DTCs.

      Result

      Result Proceed to
      DTC U1002 is output from the network gateway ECU
      (Techstream display: Gateway)      		 A
      Other DTC is output. B

    B → See step   52 

    A → See step   51 

  34. CHECK FOR OPEN IN SUB BUS 2 MAIN LINES (NETWORK GATEWAY ECU) 
    1. Disconnect the I81 network gateway ECU connector.
      GTY321974Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I81-13 (CA2H) - I81-12 (CA2L) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Network Gateway ECU)

    NG → See step   35 

    OK → See step   51 

  35. CHECK FOR OPEN IN SUB BUS 2 MAIN LINES (CAN NO. 7 J/C) 
    1. Reconnect the I81 network gateway ECU connector.
    2. Disconnect the I193 and I195 wire harness connectors.
      GTY481732Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      I193-1 (CANH) - I193-2 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω CAN No. 3 junction connector
      I195-1 (CANH) - I195-2 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω CAN No. 8 junction connector
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to CAN No. 7 Junction Connector)
      *b to CAN No. 8 Junction Connector
      *c to CAN No. 3 Junction Connector

      Wiring Color

      Code Color
      CANH Side      		 Color
      CANL Side      		 Connected to
      I193 G LG CAN No. 3 junction connector
      I195 R LG CAN No. 8 junction connector

      Result

      Result Proceed to
      OK A
      NG (to CAN No. 8 junction connector main bus lines) B
      NG (to CAN No. 3 junction connector main bus lines) C
      NOTE:
      • Before disconnecting the connectors, make a note of where they are connected.
      • Reconnect each connector to its original position.

    B → See step   36 

    C → See step   37 

    A → REPLACE CAN NO. 7 JUNCTION CONNECTOR 

  36. CHECK FOR OPEN IN SUB BUS 2 MAIN LINES (CAN NO. 8 J/C) 
    1. Reconnect the I193 and I195 wire harness connectors.
    2. Disconnect the S22 CAN No. 8 junction connector.
      GTY482001Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      S22-2 (CANH) - S22-8 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω CAN No. 7 junction connector
      S22-3 (CANH) - S22-9 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Network gateway ECU
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to CAN No. 8 Junction Connector)
      *b to CAN No. 7 Junction Connector
      *c to Network Gateway ECU

      Result

      Result Proceed to
      OK A
      NG (to CAN No. 7 junction connector main bus lines) B
      NG (to network gateway ECU main bus lines) C

    B → REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CAN NO. 7 J/C - CAN NO. 8 J/C) 

    C → REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CAN NO. 8 J/C - NETWORK GATEWAY ECU) 

    A → REPLACE CAN NO. 8 JUNCTION CONNECTOR 

  37. CHECK FOR OPEN IN SUB BUS 2 MAIN LINES (CAN NO. 3 J/C) 
    1. Reconnect the I193 and I195 wire harness connectors.
    2. Disconnect the O30 CAN No. 3 junction connector.
      GTY316361Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      O30-10 (CANH) - O30-21 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω CAN No. 5 junction connector
      O30-11 (CANH) - O30-22 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω CAN No. 7 junction connector
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to CAN No. 3 Junction Connector)
      *b to CAN No. 5 Junction Connector
      *c to CAN No. 7 Junction Connector

      Result

      Result Proceed to
      OK A
      NG (to CAN No. 5 junction connector main bus lines) B
      NG (to CAN No. 7 junction connector main bus lines) C

    B → See step   38 

    C → REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CAN NO. 3 J/C - CAN NO. 7 J/C) 

    A → REPLACE CAN NO. 3 JUNCTION CONNECTOR 

  38. CHECK FOR OPEN IN SUB BUS 2 MAIN LINES (CAN NO. 5 J/C) 
    1. Reconnect the O30 CAN No. 3 junction connector.
    2. Disconnect the T16 CAN No. 5 junction connector.
      GTY474078Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      T16-3 (CANH) - T16-2 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to CAN No. 5 Junction Connector)

    NG → REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CAN NO. 3 J/C - CAN NO. 5 J/C) 

    OK → REPLACE CAN NO. 5 JUNCTION CONNECTOR 

  39. CHECK FOR SHORT IN SUB BUS 2 LINES (NETWORK GATEWAY ECU) 
    1. Disconnect the I81 network gateway ECU connector.
      GTY321974Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I81-13 (CA2H) - I81-12 (CA2L) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Network Gateway ECU)

    NG → See step   40 

    OK → See step   51 

  40. CHECK FOR SHORT IN SUB BUS 2 LINES (CAN NO. 7 J/C) 
    1. Reconnect the I81 network gateway ECU connector.
    2. Disconnect the I193, I194 and I195 wire harness connectors.
      GTY474717Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to CAN No. 7 Junction Connector)      		 *b to CAN No. 8 Junction Connector
      *c to Driving Support ECU Assembly
      (w/ Pre-collision System)      		 *d to CAN No. 3 Junction Connector
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      I193-1 (CANH) - I193-2 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω CAN No. 3 junction connector
      I194-1 (CANH) - I194-2 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher Driving support ECU assembly*
      I195-1 (CANH) - I195-2 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω CAN No. 8 junction connector

      *: w/ Pre-collision System

      Wiring Color

      Code Color
      CANH Side      		 Color
      CANL Side      		 Connected to
      I193 G LG CAN No. 3 junction connector
      I194 L LG Driving support ECU assembly*
      I195 R LG CAN No. 8 junction connector

      *: w/ Pre-collision System

      Result

      Result Proceed to
      OK A
      NG (to CAN No. 8 junction connector main bus lines) B
      NG (to CAN No. 3 junction connector main bus lines) C
      NG (to driving support ECU assembly branch lines) D
      NOTE:
      • Before disconnecting the connectors, make a note of where they are connected.
      • Reconnect each connector to its original position.

    B → See step   41 

    C → See step   42 

    D → See step   44 

    A → REPLACE CAN NO. 7 JUNCTION CONNECTOR 

  41. CHECK FOR SHORT IN SUB BUS 2 LINES (CAN NO. 8 J/C) 
    1. Reconnect the I193, I194 and I195 wire harness connectors.
    2. Disconnect the S22 CAN No. 8 junction connector.
      GTY477175Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      S22-1 (CANH) - S22-7 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher Lane departure warning camera*
      S22-2 (CANH) - S22-8 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω CAN No. 7 junction connector
      S22-3 (CANH) - S22-9 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Network gateway ECU

      *: w/ Pre-collision System

      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to CAN No. 8 Junction Connector)
      *b to Lane Departure Warning Camera
      (w/ Pre-collision System)
      *c to CAN No. 7 Junction Connector
      *d to Network Gateway ECU

      Result

      Result Proceed to
      OK A
      NG (to lane departure warning camera branch lines) B
      NG (to CAN No. 7 junction connector main bus lines) C
      NG (to network gateway ECU main bus lines) D

    B → See step   44 

    C → REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CAN NO. 7 J/C - CAN NO. 8 J/C) 

    D → REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CAN NO. 8 J/C - NETWORK GATEWAY ECU) 

    A → REPLACE CAN NO. 8 JUNCTION CONNECTOR 

  42. CHECK FOR SHORT IN SUB BUS 2 LINES (CAN NO. 3 J/C) 
    1. Reconnect the I193, I194 and I195 wire harness connectors.
    2. Disconnect the O30 CAN No. 3 junction connector.
      GTY476812Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      O30-9 (CANH) - O30-20 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher Blind spot monitor sensor RH*
      O30-10 (CANH) - O30-21 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω CAN No. 5 junction connector
      O30-11 (CANH) - O30-22 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω CAN No. 7 junction connector

      *: w/ Blind Spot Monitor System

      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to CAN No. 3 Junction Connector)
      *b to Blind Spot Monitor Sensor RH
      (w/ Blind Spot Monitor System)
      *c to CAN No. 5 Junction Connector
      *d to CAN No. 7 Junction Connector

      Result

      Result Proceed to
      OK A
      NG (to CAN No. 5 junction connector main bus lines) B
      NG (to blind spot monitor sensor RH branch lines) C
      NG (to CAN No. 7 junction connector main bus lines) D

    B → See step   43 

    C → See step   44 

    D → REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CAN NO. 3 J/C - CAN NO. 7 J/C) 

    A → REPLACE CAN NO. 3 JUNCTION CONNECTOR 

  43. CHECK FOR SHORT IN SUB BUS 2 LINES (CAN NO. 5 J/C) 
    1. Reconnect the O30 CAN No. 3 junction connector.
    2. Disconnect the T16 CAN No. 5 junction connector.
      GTY474078Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      T16-3 (CANH) - T16-2 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to CAN No. 5 Junction Connector)

    NG → REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CAN NO. 3 J/C - CAN NO. 5 J/C) 

    OK → REPLACE CAN NO. 5 JUNCTION CONNECTOR 

  44. CHECK FOR SHORT IN SUB BUS 2 LINES (ECU, SENSOR) 
    1. Reconnect all wire harness connectors.
    2. Disconnect the connector that includes terminals CANH and CANL from the ECU or sensor to which the short-circuited branch line is connected. Refer to TERMINALS OF ECU [08/2015 - ] .
    3. Measure the resistance according to the value(s) in the table below.
      GTY481267Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      I81-13 (CA2H) - I81-12 (CA2L) Cable disconnected from negative (-) battery terminal 54 to 69 Ω
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (Network Gateway ECU)

      HINT: 

      • If the resistance becomes normal (between 54 and 69 Ω) when the connector is disconnected from the ECU or sensor, there may be a short in the ECU or sensor.
      • If the resistance does not become normal (between 54 and 69 Ω) when the connector is disconnected from the ECU or sensor, repair or replace the short-circuited branch line or connector.

    NG → REPAIR OR REPLACE CORRESPONDING ECU OR SENSOR BRANCH LINES OR CONNECTOR 

    OK → REPLACE CORRESPONDING ECU OR SENSOR 

  45. CHECK FOR SHORT IN SUB BUS 2 LINE (NETWORK GATEWAY ECU) 
    1. Disconnect the I81 network gateway ECU connector.
      GTY315219Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Result
      I81-13 (CA2H) - I81-4 (GND) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short
      I81-12 (CA2L) - I81-4 (GND) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      I81-13 (CA2H) - I81-2 (BATT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short
      I81-12 (CA2L) - I81-2 (BATT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Network Gateway ECU)

      HINT: 

      • It is only necessary to perform the inspection in the above table for the result (short circuit) that was obtained in the Check Sub Bus 2 inspection.
      • Find the necessary inspection from the Result column that matches the result in the Result column from the Check Sub Bus 2 inspection.

    NG → See step   46 

    OK → See step   51 

  46. CHECK FOR SHORT IN SUB BUS 2 LINE (CAN NO. 7 J/C) 
    1. Reconnect the I81 network gateway ECU connector.
    2. Disconnect the I193, I194 and I195 wire harness connectors.
      GTY473675Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3 - -
      *a Rear view of wire harness connector
      (to CAN No. 7 Junction Connector)      		 *b to CAN No. 8 Junction Connector
      *c to Driving Support ECU Assembly
      (w/ Pre-collision System)      		 *d to CAN No. 3 Junction Connector
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Result Connected to
      I193-1 (CANH) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short      		 CAN No. 3 junction connector
      I193-2 (CANL) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      I194-1 (CANH) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short      		 Driving support ECU assembly*
      I194-2 (CANL) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      I195-1 (CANH) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short      		 CAN No. 8 junction connector
      I195-2 (CANL) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      I193-1 (CANH) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short      		 CAN No. 3 junction connector
      I193-2 (CANL) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      I194-1 (CANH) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short      		 Driving support ECU assembly*
      I194-2 (CANL) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      I195-1 (CANH) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short      		 CAN No. 8 junction connector
      I195-2 (CANL) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short

      *: w/ Pre-collision System

      Wiring Color

      Code Color
      CANH Side      		 Color
      CANL Side      		 Connected to
      I193 G LG CAN No. 3 junction connector
      I194 L LG Driving support ECU assembly*
      I195 R LG CAN No. 8 junction connector

      *: w/ Pre-collision System

      Result

      Result Proceed to
      OK A
      NG (to CAN No. 8 junction connector main bus line) B
      NG (to CAN No. 3 junction connector main bus line) C
      NG (to driving support ECU assembly branch line) D
      NOTE:
      • Before disconnecting the connectors, make a note of where they are connected.
      • Reconnect each connector to its original position.

      HINT: 

      • It is only necessary to perform the inspection in the above table for the result (short circuit) that was obtained in the Check Sub Bus 2 inspection.
      • Find the necessary inspection from the Result column that matches the result in the Result column from the Check Sub Bus 2 inspection.

    B → See step   47 

    C → See step   48 

    D → See step   50 

    A → REPLACE CAN NO. 7 JUNCTION CONNECTOR 

  47. CHECK FOR SHORT IN SUB BUS 2 LINE (CAN NO. 8 J/C) 
    1. Reconnect the I193, I194 and I195 wire harness connectors.
    2. Disconnect the S22 CAN No. 8 junction connector.
      GTY477782Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3 - -
      *a Front view of wire harness connector
      (to CAN No. 8 Junction Connector)      		 *b to Lane Departure Warning Camera
      (w/ Pre-collision System)
      *c to CAN No. 7 Junction Connector *d to Network Gateway ECU
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Result Connected to
      S22-1 (CANH) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short      		 Lane departure warning camera*
      S22-7 (CANL) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      S22-2 (CANH) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short      		 CAN No. 7 junction connector
      S22-8 (CANL) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      S22-3 (CANH) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short      		 Network gateway ECU
      S22-9 (CANL) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      S22-1 (CANH) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short      		 Lane departure warning camera*
      S22-7 (CANL) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      S22-2 (CANH) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short      		 CAN No. 7 junction connector
      S22-8 (CANL) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      S22-3 (CANH) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short      		 Network gateway ECU
      S22-9 (CANL) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short

      *: w/ Pre-collision System

      Result

      Result Proceed to
      OK A
      NG (to lane departure warning camera branch line) B
      NG (to CAN No. 7 junction connector main bus line) C
      NG (to network gateway ECU main bus line) D

      HINT: 

      • It is only necessary to perform the inspection in the above table for the result (short circuit) that was obtained in the Check Sub Bus 2 inspection.
      • Find the necessary inspection from the Result column that matches the result in the Result column from the Check Sub Bus 2 inspection.

    B → See step   50 

    C → REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (CAN NO. 7 J/C - CAN NO. 8 J/C) 

    D → REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (CAN NO. 8 J/C - NETWORK GATEWAY ECU) 

    A → REPLACE CAN NO. 8 JUNCTION CONNECTOR 

  48. CHECK FOR SHORT IN SUB BUS 2 LINE (CAN NO. 3 J/C) 
    1. Reconnect the I193, I194 and I195 wire harness connectors.
    2. Disconnect the O30 CAN No. 3 junction connector.
      GTY475865Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3 - -
      *a Front view of wire harness connector
      (to CAN No. 3 Junction Connector)      		 *b to Blind Spot Monitor Sensor RH
      (w/ Blind Spot Monitor System)
      *c to CAN No. 5 Junction Connector *d to CAN No. 7 Junction Connector
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Result Connected to
      O30-9 (CANH) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short      		 Blind spot monitor sensor RH*
      O30-20 (CANL) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      O30-10 (CANH) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short      		 CAN No. 5 junction connector
      O30-21 (CANL) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      O30-11 (CANH) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short      		 CAN No. 7 junction connector
      O30-22 (CANL) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      O30-9 (CANH) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short      		 Blind spot monitor sensor RH*
      O30-20 (CANL) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      O30-10 (CANH) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short      		 CAN No. 5 junction connector
      O30-21 (CANL) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      O30-11 (CANH) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short      		 CAN No. 7 junction connector
      O30-22 (CANL) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short

      *: w/ Blind Spot Monitor System

      Result

      Result Proceed to
      OK A
      NG (to CAN No. 5 junction connector main bus line) B
      NG (to CAN No. 7 junction connector main bus line) C
      NG (to blind spot monitor sensor RH branch line) D

      HINT: 

      • It is only necessary to perform the inspection in the above table for the result (short circuit) that was obtained in the Check Sub Bus 2 inspection.
      • Find the necessary inspection from the Result column that matches the result in the Result column from the Check Sub Bus 2 inspection.

    B → See step   49 

    C → REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (CAN NO. 3 J/C - CAN NO. 7 J/C) 

    D → See step   50 

    A → REPLACE CAN NO. 3 JUNCTION CONNECTOR 

  49. CHECK FOR SHORT IN SUB BUS 2 LINE (CAN NO. 5 J/C) 
    1. Reconnect the O30 CAN No. 3 junction connector.
    2. Disconnect the T16 CAN No. 5 junction connector.
      GTY477983Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Result
      T16-3 (CANH) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short
      T16-2 (CANL) - I39-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      T16-3 (CANH) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short
      T16-2 (CANL) - I39-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      TEXT IN ILLUSTRATION

      *1 DLC3
      *a Front view of wire harness connector
      (to CAN No. 5 Junction Connector)

      HINT: 

      • It is only necessary to perform the inspection in the above table for the result (short circuit) that was obtained in the Check Sub Bus 2 inspection.
      • Find the necessary inspection from the Result column that matches the result in the Result column from the Check Sub Bus 2 inspection.

    NG → REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (CAN NO. 3 J/C - CAN NO. 5 J/C) 

    OK → REPLACE CAN NO. 5 JUNCTION CONNECTOR 

  50. CHECK FOR SHORT IN SUB BUS 2 LINE (ECU, SENSOR) 
    1. Reconnect all wire harness connectors.
    2. Disconnect the connector that includes terminals CANH and CANL from the ECU to which the bus line shorted to B+ or shorted to GND is connected. Refer to TERMINALS OF ECU [08/2015 - ] .
    3. Measure the resistance according to the value(s) in the table below.
      GTY473629Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition Result
      I81-13 (CA2H) - I81-4 (GND) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short
      I81-12 (CA2L) - I81-4 (GND) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      I81-13 (CA2H) - I81-2 (BATT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short
      I81-12 (CA2L) - I81-2 (BATT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (Network Gateway ECU)

      HINT: 

      • It is only necessary to perform the inspection in the above table for the result (short circuit) that was obtained in the Check Sub Bus 2 inspection.
      • Find the necessary inspection from the Result column that matches the result in the Result column from the Check Sub Bus 2 inspection.

    NG → REPAIR OR REPLACE CORRESPONDING ECU OR SENSOR BRANCH LINE OR CONNECTOR 

    OK → REPLACE CORRESPONDING ECU OR SENSOR 

  51. REPLACE NETWORK GATEWAY ECU. Refer to  REMOVAL [08/2015 - ] 
  52. GO TO DIAGNOSIS PROCEDURE INDICATED BY OUTPUT DTC. Refer to  DTC C1621: Back Camera Power Supply Failure [08/2015 - ] 
  53. SYMPTOMS SIMULATION. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - ] 
  54. REPLACE REAR TELEVISION CAMERA ASSEMBLY. Refer to  REMOVAL [08/2015 - ] 
  55. REPLACE BLIND SPOT MONITOR SENSOR RH. Refer to  REMOVAL [08/2015 - ] 
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