CAN COMMUNICATION SYSTEM, Diagnostic DTC:U1002

DTC Code DTC Name
U1002 Lost Communication with Gateway Module (MS Bus)

DESCRIPTION


DTC No. DTC Detection Condition Trouble Area
U1002 Main body ECU (driver side junction block assembly) cannot receive signals from all ECUs that have been memorized as those connected to the CAN MS bus.

  • Open or short in CAN MS bus main wire or connector

  • Open or short in CAN MS bus branch wire or connector

  • Power back door ECU (Back door motor unit)*1

  • Back door closer ECU*2

  • Outer mirror control ECU assembly (for Driver side)

  • Outer mirror control ECU assembly (for Front passenger side)

  • Position control ECU and switch assembly

  • Main body ECU (Driver side junction block assembly)

  • CAN No. 4 junction connector

  • CAN No. 5 junction connector

WIRING DIAGRAM

A01EK5KE02

INSPECTION PROCEDURE

Note


  • Turn the ignition switch off before measuring the resistances between CAN bus main wires and between CAN bus branch wires.

  • Turn the ignition switch off before inspecting CAN bus wires for a ground short.

  • After the ignition switch is turned off, check that the key reminder warning system and light reminder warning system are not operating.

  • Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, any other switches or the doors. If any doors need to be opened in order to check connectors, open the doors and leave them open.

Tech Tips


  • Operating the ignition switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.

  • Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.

PROCEDURE


  1. CHECK CAN MS BUS WIRE


    1. Turn the ignition switch off.

    2. A01EKVUE01
      Text in Illustration
      *1

      Component with harness connected

      (CAN No. 4 Junction Connector)
      *2 Earth Terminal
      *3 DLC3

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition Result
      L27-1 (CANH) - L27-2 (CANL) Ignition switch off 54 to 69 Ω

      Below 54 Ω:

      Short circuit between bus lines

      70 Ω or more:

      Open circuit in a main bus line
      L27-1 (CANH) - D1-4 (CG) Ignition switch off 200 Ω or higher

      Below 200 Ω:

      CANH ground short
      L27-2 (CANL) - D1-4 (CG) Ignition switch off 200 Ω or higher

      Below 200 Ω:

      CANL ground short

    3. Disconnect the cable from the negative (-) battery terminal.

    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition Result
      L27-1 (CANH) - D1-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher

      Below 6 kΩ:

      CANH +B short
      L27-2 (CANL) - D1-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher

      Below 6 kΩ:

      CANL +B short
      Result
      Result Proceed to
      OK A
      Open in CAN main bus line B

      • Short circuit between bus lines

      • Ground short

      • +B short

      		 C

    B

    CHECK FOR OPEN IN CAN MS BUS MAIN WIRE (CAN NO. 4 J/C - CAN NO. 5 J/C) Click here

    C

    CHECK FOR SHORT IN CAN BUS WIRE (CAN NO. 4 J/C) Click here

    A

    REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Click here

  2. CHECK FOR OPEN IN CAN MS BUS MAIN WIRE (CAN NO. 4 J/C - CAN NO. 5 J/C)


    1. A01EIT7E01
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to CAN No. 4 Junction Connector)
      *2 Earth Terminal
      *3 Red
      *4 White

      Disconnect the CAN No. 4 junction connector (L27).

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L27-1 (CANH) - L27-2 (CANL) Ignition switch off 108 to 132 Ω

    NG

    CHECK FOR OPEN IN CAN MS BUS MAIN WIRE (CAN NO. 5 J/C - CAN NO. 4 J/C) Click here

    OK

    REPLACE CAN NO. 4 J/C

  3. CHECK FOR OPEN IN CAN MS BUS MAIN WIRE (CAN NO. 5 J/C - CAN NO. 4 J/C)


    1. Reconnect the CAN No. 4 junction connector (L27).

    2. Disconnect the CAN No. 5 junction connector (D77).

      A01EITUE05
      Text in Illustration
      *1 CAN No. 5 Junction Connector
      *2 Rear view of wire harness connector (to CAN No. 5 Junction Connector)
      *3 Red
      *4 White

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      D77-1 (CANH) - D77-2 (CANL) Ignition switch off 108 to 132 Ω

    NG

    REPAIR OR REPLACE CAN MS BUS MAIN WIRE OR CONNECTOR (CAN NO. 5 J/C - CAN NO. 4 J/C)

    OK

  4. CHECK FOR OPEN IN CAN MS BUS MAIN WIRE (CAN NO. 5 J/C - MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY))


    1. Reconnect the CAN No. 5 junction connector (D77).

    2. Disconnect the CAN No. 5 junction connector (D73).

      A01EITUE04
      Text in Illustration
      *1 CAN No. 5 Junction Connector
      *2 Rear view of wire harness connector (to CAN No. 5 Junction Connector)
      *3 Sky Blue
      *4 White

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      D73-1 (CANH) - D73-2 (CANL) Ignition switch off 108 to 132 Ω

    NG

    CHECK FOR OPEN IN CAN MS BUS MAIN WIRE (MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) - CAN NO. 5 J/C) Click here

    OK

    REPLACE CAN NO. 5 J/C

  5. CHECK FOR OPEN IN CAN MS BUS MAIN WIRE (MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) - CAN NO. 5 J/C)


    1. Reconnect the No. 5 junction connector (D73).

    2. A01EMNWE09
      Text in Illustration
      *1

      Front view of wire harness connector:

      (to Main Body ECU (Driver Side Junction Block Assembly))

      Disconnect the main body ECU (driver side junction block assembly) connector (D48).

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      D48-16 (CANP) - D48-15 (CANN) Ignition switch off 108 to 132 Ω

    NG

    REPAIR OR REPLACE CAN MS BUS MAIN WIRE OR CONNECTOR (MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) - CAN NO. 5 J/C)

    OK

    REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Click here

  6. CHECK FOR SHORT IN CAN BUS WIRE (CAN NO. 4 J/C)


    1. Turn the ignition switch off.

    2. A01EM5GE01
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to CAN No. 4 Junction Connector)
      *2 Earth Terminal
      *3 DLC3
      *4 Red
      *5 White

      Disconnect the CAN No. 4 junction connector (L27).

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition Purpose
      L27-1 (CANH) - L27-2 (CANL) Ignition switch off 108 to 132 Ω Inspection for open or short circuit between bus line
      L27-1 (CANH) - D1-4 (CG) Ignition switch off 200 Ω or higher Inspection for CANH ground short
      L27-2 (CANL) - D1-4 (CG) Ignition switch off 200 Ω or higher Inspection for CANL ground short
      L27-1 (CANH) - D1-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANH +B short
      L27-2 (CANL) - D1-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANL +B short

      Tech Tips

      It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

      Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.

      Result
      Result Proceed to
      OK (w/ Power back door system) A
      OK (w/ Back door closer system) B
      NG C

    B

    CHECK FOR SHORT IN CAN MS BUS WIRES (BACK DOOR CLOSER ECU - CAN NO. 4 J/C) Click here

    C

    CHECK FOR SHORT IN CAN MS BUS WIRES (CAN NO. 5 J/C - CAN NO. 4 J/C) Click here

    A

  7. CHECK FOR SHORT IN CAN MS BUS WIRES (POWER BACK DOOR ECU - CAN NO. 4 J/C)


    1. Reconnect the CAN No. 4 junction connector (L27).

    2. A01EJDWE05
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Power Back Door ECU)

      Disconnect the power back door ECU connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition Purpose
      L20-6 (MPX1) - L20-5 (MPX2) Ignition switch off 54 to 69 Ω Inspection for open or short circuit between bus lines
      L20-6 (MPX1) - L20-11 (GND) Ignition switch off 200 Ω or higher Inspection for CANH ground short
      L20-5 (MPX2) - L20-11 (GND) Ignition switch off 200 Ω or higher Inspection for CANL ground short
      L20-6 (MPX1) - L20-10 (ECUB) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANH +B short
      L20-5 (MPX2) - L20-10 (ECUB) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANL +B short

      Tech Tips

      It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

      Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


    NG

    CHECK CAN MS BUS BRANCH WIRE (POWER BACK DOOR ECU) Click here

    OK

    REPLACE POWER BACK DOOR ECU (BACK DOOR MOTOR UNIT) Click here

  8. CHECK CAN MS BUS BRANCH WIRE (POWER BACK DOOR ECU)


    1. A01EIRTE03
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to CAN No. 4 Junction Connector)
      *2 Earth Terminal
      *3 Pink
      *4 White

      Disconnect the CAN No. 4 junction connector (L28).

    2. A01EJDWE14
      Text in Illustration
      *5

      Front view of wire harness connector:

      (to Power Back Door ECU)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition Purpose
      L20-6 (MPX1) - L20-5 (MPX2) Ignition switch off 1 MΩ or higher Inspection for open or short circuit between bus lines
      L20-6 (MPX1) - L20-11 (GND) Ignition switch off 200 Ω or higher Inspection for CANH ground short
      L20-5 (MPX2) - L20-11 (GND) Ignition switch off 200 Ω or higher Inspection for CANL ground short
      L20-6 (MPX1) - L20-10 (ECUB) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANH +B short
      L20-5 (MPX2) - L20-10 (ECUB) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANL +B short

      Tech Tips

      It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

      Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


    NG

    REPAIR OR REPLACE CAN MS BUS BRANCH WIRE OR CONNECTOR (POWER BACK DOOR ECU)

    OK

    REPLACE CAN NO. 4 J/C

  9. CHECK FOR SHORT IN CAN MS BUS WIRES (BACK DOOR CLOSER ECU - CAN NO. 4 J/C)


    1. Reconnect the CAN No. 4 junction connector (L27).

    2. A01EJLUE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Back Door Closer ECU)

      Disconnect the back door closer ECU connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition Purpose
      L21-11 (MPX1) - L21-12 (MPX2) Ignition switch off 54 to 69 Ω Inspection for open or short circuit between bus lines
      L21-11 (MPX1) - L21-3 (GND) Ignition switch off 200 Ω or higher Inspection for CANH ground short
      L21-12 (MPX2) - L21-3 (GND) Ignition switch off 200 Ω or higher Inspection for CANL ground short
      L21-11 (MPX1) - L21-16 (ECUB) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANH +B short
      L21-12 (MPX2) - L21-16 (ECUB) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANL +B short

      Tech Tips

      It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

      Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


    NG

    CHECK CAN MS BUS BRANCH WIRE (BACK DOOR CLOSER ECU) Click here

    OK

    REPLACE BACK DOOR CLOSER ECU

  10. CHECK CAN MS BUS BRANCH WIRE (BACK DOOR CLOSER ECU)


    1. A01EKDTE34
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to CAN No. 4 Junction Connector)
      *2 Earth Terminal
      *3 Pink
      *4 White

      Disconnect the CAN No. 4 junction connector (L29).

    2. A01EJLUE17
      Text in Illustration
      *5

      Front view of wire harness connector

      (to Back Door Closer ECU)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition Purpose
      L21-11 (MPX1) - L21-12 (MPX2) Ignition switch off 1 MΩ or higher Inspection for open or short circuit between bus lines
      L21-11 (MPX1) - L21-3 (GND) Ignition switch off 200 Ω or higher Inspection for CANH ground short
      L21-12 (MPX2) - L21-3 (GND) Ignition switch off 200 Ω or higher Inspection for CANL ground short
      L21-11 (MPX1) - L21-16 (ECUB) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANH +B short
      L21-12 (MPX2) - L21-16 (ECUB) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANL +B short

      Tech Tips

      It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

      Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


    NG

    REPAIR OR REPLACE CAN MS BUS BRANCH WIRE OR CONNECTOR (BACK DOOR CLOSER ECU)

    OK

    REPLACE CAN NO. 4 J/C

  11. CHECK FOR SHORT IN CAN MS BUS WIRES (CAN NO. 5 J/C - CAN NO. 4 J/C)


    1. Reconnect the CAN No. 4 junction connector (L27).

    2. Disconnect the CAN No. 5 junction connector (D77).

      A01EM5VE06
      Text in Illustration
      *1 CAN No. 5 Junction Connector
      *2 Rear view of wire harness connector (to CAN No. 5 Junction Connector)
      *3 DLC3
      *4 Red
      *5 White

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition Purpose
      D77-1 (CANH) - D77-2 (CANL) Ignition switch off 108 to 132 Ω Inspection for open or short circuit between bus line
      D77-1 (CANH) - D1-4 (CG) Ignition switch off 200 Ω or higher Inspection for CANH ground short
      D77-2 (CANL) - D1-4 (CG) Ignition switch off 200 Ω or higher Inspection for CANL ground short
      D77-1 (CANH) - D1-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANH +B short
      D77-2 (CANL) - D1-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANL +B short

      Tech Tips

      It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

      Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


    NG

    REPAIR OR REPLACE CAN MS BUS MAIN WIRE OR CONNECTOR (CAN NO. 5 J/C - CAN NO. 4 J/C)

    OK

  12. CHECK FOR SHORT IN CAN MS BUS WIRES (CAN NO. 5 J/C - POSITION CONTROL ECU AND SWITCH ASSEMBLY)


    1. Disconnect the CAN No. 5 junction connector (D76).

    2. Reconnect the CAN No. 5 junction connector (D77).

      A01EM5VE07
      Text in Illustration
      *1 CAN No. 5 Junction Connector
      *2 Rear view of wire harness connector (to CAN No. 5 Junction Connector)
      *3 DLC3
      *4 Green
      *5 Red

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition Purpose
      D76-1 (CANH) - D76-2 (CANL) Ignition switch off 200 Ω or higher Inspection for open or short circuit between bus line
      D76-1 (CANH) - D1-4 (CG) Ignition switch off 200 Ω or higher Inspection for CANH ground short
      D76-2 (CANL) - D1-4 (CG) Ignition switch off 200 Ω or higher Inspection for CANL ground short
      D76-1 (CANH) - D1-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANH +B short
      D76-2 (CANL) - D1-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANL +B short

      Tech Tips

      It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

      Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


    NG

    CHECK FOR SHORT IN CAN MS BUS BRANCH WIRES (POSITION CONTROL ECU AND SWITCH ASSEMBLY) Click here

    OK

  13. CHECK FOR SHORT IN CAN MS BUS WIRES (CAN NO. 5 J/C - OUTER MIRROR CONTROL ECU ASSEMBLY (for Driver Side))


    1. Disconnect the CAN No. 5 junction connector (D75).

      A01EM5VE08
      Text in Illustration
      *1 CAN No. 5 Junction Connector
      *2 Rear view of wire harness connector (to CAN No. 5 Junction Connector)
      *3 DLC3
      *4 Blue
      *5 White

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

      Standard Resistance
      Tester Connection Condition Specified Condition Purpose
      D75-1 (CANH) - D75-2 (CANL) Ignition switch off 200 Ω or higher Inspection for open or short circuit between bus line
      D75-1 (CANH) - D1-4 (CG) Ignition switch off 200 Ω or higher Inspection for CANH ground short
      D75-2 (CANL) - D1-4 (CG) Ignition switch off 200 Ω or higher Inspection for CANL ground short
      D75-1 (CANH) - D1-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANH +B short
      D75-2 (CANL) - D1-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANL +B short

      Tech Tips

      It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

      Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


    NG

    CHECK FOR SHORT IN CAN MS BUS BRANCH WIRES (OUTER MIRROR CONTROL ECU ASSEMBLY (for Driver Side)) Click here

    OK

  14. CHECK FOR SHORT IN CAN MS BUS WIRES (CAN NO. 5 J/C - OUTER MIRROR CONTROL ECU ASSEMBLY (for Front Passenger Side))


    1. Disconnect the CAN No. 5 junction connector (D74).

      A01EM5VE09
      Text in Illustration
      *1 CAN No. 5 Junction Connector
      *2 Rear view of wire harness connector (to CAN No. 5 Junction Connector)
      *3 DLC3
      *4 Pink
      *5 White

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

      Standard Resistance
      Tester Connection Condition Specified Condition Purpose
      D74-1 (CANH) - D74-2 (CANL) Ignition switch off 200 Ω or higher Inspection for open or short circuit between bus line
      D74-1 (CANH) - D1-4 (CG) Ignition switch off 200 Ω or higher Inspection for CANH ground short
      D74-2 (CANL) - D1-4 (CG) Ignition switch off 200 Ω or higher Inspection for CANL ground short
      D74-1 (CANH) - D1-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANH +B short
      D74-2 (CANL) - D1-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANL +B short

      Tech Tips

      It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

      Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


    NG

    CHECK FOR SHORT IN CAN MS BUS BRANCH WIRES (OUTER MIRROR CONTROL ECU ASSEMBLY (for Front Passenger Side)) Click here

    OK

  15. CHECK FOR SHORT IN CAN MS BUS WIRES (CAN NO. 5 J/C - MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY))


    1. Disconnect the CAN No. 5 junction connector (D73).

      A01EM5VE10
      Text in Illustration
      *1 CAN No. 5 Junction Connector
      *2 Rear view of wire harness connector (to CAN No. 5 Junction Connector)
      *3 DLC3
      *4 Sky Blue
      *5 White

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

      Standard Resistance
      Tester Connection Condition Specified Condition Purpose
      D73-1 (CANH) - D73-2 (CANL) Ignition switch off 108 to 132 Ω Inspection for open or short circuit between bus line
      D73-1 (CANH) - D1-4 (CG) Ignition switch off 200 Ω or higher Inspection for CANH ground short
      D73-2 (CANL) - D1-4 (CG) Ignition switch off 200 Ω or higher Inspection for CANL ground short
      D73-1 (CANH) - D1-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANH +B short
      D73-2 (CANL) - D1-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANL +B short

      Tech Tips

      It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

      Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


    NG

    CHECK FOR SHORT IN CAN MS BUS WIRES (MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)) Click here

    OK

    REPLACE CAN NO. 5 J/C

  16. CHECK FOR SHORT IN CAN MS BUS BRANCH WIRES (POSITION CONTROL ECU AND SWITCH ASSEMBLY)


    1. Reconnect the CAN No. 5 junction connector (D76).

    2. Disconnect the position control ECU and switch assembly connectors (T10 and T11).

      A01EIS0E30
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Position Control ECU and Switch Assembly)

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition Purpose
      T11-8 (CANP) - T11-7 (CANN) Ignition switch off 54 to 69 Ω Inspection for open or short circuit between bus line
      T11-8 (CANP) - T10-1 (GND) Ignition switch off 200 Ω or higher Inspection for CANH ground short
      T11-7 (CANN) - T10-1 (GND) Ignition switch off 200 Ω or higher Inspection for CANL ground short
      T11-8 (CANP) - T10-6 (+B) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANH +B short
      T11-7 (CANN) - T10-6 (+B) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANL +B short

      Tech Tips

      It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

      Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


    NG

    REPAIR OR REPLACE CAN MS BUS BRANCH WIRE OR CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY - CAN NO. 5 J/C)

    OK

    REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY Click here

  17. CHECK FOR SHORT IN CAN MS BUS BRANCH WIRES (OUTER MIRROR CONTROL ECU ASSEMBLY (for Driver Side))


    1. Reconnect the CAN No. 5 junction connector (D75).

    2. A01EK64E14
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Outer Mirror Control ECU Assembly (for Driver Side))

      Disconnect the outer mirror control ECU assembly connector (I13).

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition Purpose
      I13-9 (CANP) - I13-8 (CANN) Ignition switch off 54 to 69 Ω Inspection for open or short circuit between bus line
      I13-9 (CANP) - I13-7 (GND) Ignition switch off 200 Ω or higher Inspection for CANH ground short
      I13-8 (CANN) - I13-7 (GND) Ignition switch off 200 Ω or higher Inspection for CANL ground short
      I13-9 (CANP) - I13-6 (CPUB) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANH +B short
      I13-8 (CANN) - I13-6 (CPUB) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANL +B short

      Tech Tips

      It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

      Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


    NG

    REPAIR OR REPLACE CAN MS BUS BRANCH WIRE OR CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY (FOR DRIVER SIDE))

    OK

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (FOR DRIVER SIDE) Click here

  18. CHECK FOR SHORT IN CAN MS BUS BRANCH WIRES (OUTER MIRROR CONTROL ECU ASSEMBLY (for Front Passenger Side))


    1. Reconnect the CAN No. 5 junction connector (D74).

    2. A01EK64E15
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Outer Mirror Control ECU Assembly (for Front Passenger Side))

      Disconnect the outer mirror control ECU assembly connector (H13).

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition Purpose
      H13-9 (CANP) - H13-8 (CANN) Ignition switch off 54 to 69 Ω Inspection for open or short circuit between bus line
      H13-9 (CANP) - H13-7 (GND) Ignition switch off 200 Ω or higher Inspection for CANH ground short
      H13-8 (CANN) - H13-7 (GND) Ignition switch off 200 Ω or higher Inspection for CANL ground short
      H13-9 (CANP) - H13-6 (CPUB) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANH +B short
      H13-8 (CANN) - H13-6 (CPUB) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANL +B short

      Tech Tips

      It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

      Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


    NG

    REPAIR OR REPLACE CAN MS BUS BRANCH WIRE OR CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY (FOR FRONT PASSENGER SIDE) - CAN NO. 5 J/C)

    OK

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (FOR FRONT PASSENGER SIDE) Click here

  19. CHECK FOR SHORT IN CAN MS BUS WIRES (MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY))


    1. Reconnect the CAN No. 5 junction connector (D73).

    2. Disconnect the main body ECU (driver side junction block assembly) connector (D48).

      A01EKN9E04
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Main Body ECU (Driver Side Junction Block Assembly))
      *2 DLC3

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition Purpose
      D48-16 (CANP) - D48-15 (CANN) Ignition switch off 108 to 132 Ω Inspection for open or short circuit between bus line
      D48-16 (CANP) - D1-4 (CG) Ignition switch off 200 Ω or higher Inspection for CANH ground short
      D48-15 (CANN) - D1-4 (CG) Ignition switch off 200 Ω or higher Inspection for CANL ground short
      D48-16 (CANP) - D1-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANH +B short
      D48-15 (CANN) - D1-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Inspection for CANL +B short

      Tech Tips

      It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

      Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


    NG

    REPAIR OR REPLACE CAN MS BUS MAIN WIRE OR CONNECTOR (MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) - CAN NO. 5 J/C)

    OK

    REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Click here