PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:U1002

DTC Code DTC Name
U1002 Lost Communication with Gateway Module

DESCRIPTION

This DTC is stored when the driving support ECU assembly cannot receive signals from the forward recognition camera or millimeter wave radar sensor assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area
U1002 Lost Communication with Gateway Module

After the engine switch is turned on, communication between the driving support ECU and any of the following components is abnormal for 2 seconds or more


  • Forward recognition camera

  • Millimeter wave radar sensor assembly

  • CAN bus main line, CAN bus branch line or connector

  • Forward recognition camera

  • Millimeter wave radar sensor assembly

  • Driving support ECU assembly

  • Headlight light control ECU sub-assembly LH (w/ Adaptive high beam system)

  • Headlight light control ECU sub-assembly RH (w/ Adaptive high beam system)

  • No. 1 CAN junction connector

  • No. 6 CAN Junction Connector (w/ Adaptive high beam system)

WIRING DIAGRAM

B002D5KE04

CAUTION / NOTICE / HINT

Note


  • Before measuring the resistance of the CAN bus, turn the engine switch off and leave the vehicle for 1 minute or more without operating the key or any switches, or opening or closing the doors. After that, disconnect the cable from the negative (-) battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.

  • After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

    Click here

  • When replacing the millimeter wave radar sensor assembly, always replace it with a new one. If a millimeter wave radar sensor assembly which was installed to another vehicle is used, the information stored in the millimeter wave radar sensor assembly will not match the information from the vehicle. As a result, a DTC may be stored.

  • When the millimeter wave radar sensor assembly is replaced with a new one, adjustment of the radar sensor beam axis must be performed.

    Click here

  • When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle. As a result, a DTC may be stored.

  • If the forward recognition camera has been replaced with a new one, be sure to perform Forward Recognition Camera Learning.

    Click here

Tech Tips


  • Operating the engine 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. CONFIRM VEHICLE TYPE


    1. Confirm vehicle type.

      Result
      Result Proceed to
      w/o Adaptive High-beam System A
      w/ Adaptive High-beam System B

    B

    CHECK CAN BUS LINE (MALFUNCTION CONFIRMATION) Click here

    A

  2. CHECK CAN BUS LINE (MALFUNCTION CONFIRMATION)


    1. Turn the engine switch off.

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

    3. B002CVUC11
      *a

      Component with harness connected

      (Driving Support ECU Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition Result
      K4-8 (CA1P) - K4-9 (CA1N) Cable disconnected from negative (-) battery terminal 54 to 69 Ω

      Below 54 Ω:

      Short circuit between bus lines

      70 Ω or more:

      Open circuit in a main bus line or driving support ECU assembly branch line
      K4-8 (CA1P) - K4-28 (GND) Cable disconnected from negative (-) battery terminal 200 Ω or higher

      Below 200 Ω:

      CANH ground short
      K4-9 (CA1N) - K4-28 (GND) Cable disconnected from negative (-) battery terminal 200 Ω or higher

      Below 200 Ω:

      CANH ground short
      K4-8 (CA1P) - K4-7 (B) Cable disconnected from negative (-) battery terminal 6 kΩ or higher

      Below 6 kΩ:

      CANH +B short
      K4-9 (CA1N) - K4-7 (B) Cable disconnected from negative (-) battery terminal 6 kΩ or higher

      Below 6 kΩ:

      CANH +B short
      Result
      Result Proceed to
      OK A
      NG (Open circuit in main line or Driving support ECU assembly branch line) B
      NG (Short circuit between main lines) C
      NG (Short to +B or ground) D

    B

    CHECK FOR OPEN IN CAN BUS BRANCH LINES (DRIVING SUPPORT ECU ASSEMBLY) Click here

    C

    CHECK FOR SHORT BETWEEN CAN BUS LINES (FORWARD RECOGNITION CAMERA) Click here

    D

    CHECK FOR SHORT IN CAN BUS LINE (FORWARD RECOGNITION CAMERA) Click here

    A

  3. CHECK FOR DTCs (PRE-CRASH SAFETY SYSTEM)


    1. Clear the DTCs.

      Click here


      Body Electrical > Pre-Crash 2 > Clear DTCs

    2. Perform the following procedure.

      Tech Tips

      If the following procedure is not performed, the previously output DTC cannot be detected.


      1. Turn the engine switch on (IG) and wait 2 seconds or more.

    3. Check for DTCs.

      Click here


      Body Electrical > Pre-Crash 2 > Trouble Codes
      Result
      Result Proceed to
      DTC U1002 is not output A
      DTC U1002 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

  4. CHECK FOR OPEN IN CAN BUS BRANCH LINES (DRIVING SUPPORT ECU ASSEMBLY)


    1. B002EYQC43
      *a

      Front view of wire harness connector

      (to Driving Support ECU Assembly)

      Disconnect the driving support ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K4-8 (CA1P) - K4-9 (CA1N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Tech Tips

      If the resistance is between 108 and 132 Ω, there may be an open in a CAN bus main line. If the value is 132 Ω or more, there may be an open in a CAN bus branch line between the No. 6 CAN junction connector and the driving support ECU or a connector may be disconnected.

    3. Connect the K4 driving support ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    CHECK FOR OPEN IN CAN BUS BRANCH LINES (DRIVING SUPPORT ECU ASSEMBLY) Click here

    OK

  5. CHECK FOR OPEN IN CAN BUS MAIN LINES (NO. 6 CAN JUNCTION CONNECTOR)


    1. B002DXDC24
      *a

      Front view of wire harness connector

      (to No. 6 CAN Junction Connector)
      *b to Forward Recognition Camera
      *c to Millimeter Wave Radar Sensor Assembly

      Disconnect the No. 6 CAN junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      K108-19 (CANL) - K108-8 (CANH) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Forward Recognition Camera
      K108-11 (CA1P) - K108-22 (CA1N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Millimeter Wave Radar Sensor Assembly

    3. Connect the K108 No. 6 CAN junction connector.

      Result
      Result Proceed to
      OK A
      NG (Forward Recognition Camera Main Line) B
      NG (Millimeter Wave Radar Sensor Assembly) C

    A

    REPLACE NO. 6 CAN JUNCTION CONNECTOR

    C

    CHECK FOR OPEN IN CAN BUS MAIN LINES (MILLIMETER WAVE RADAR SENSOR ASSEMBLY) Click here

    B

  6. CHECK FOR OPEN IN CAN BUS MAIN LINES (FORWARD RECOGNITION CAMERA)


    1. B002DM9C83
      *a

      Front view of wire harness connector

      (to Forward Recognition Camera)

      Disconnect the forward recognition camera connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W6-6 (CANH) - W6-12 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

    3. Connect the W6 forward recognition camera connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FORWARD RECOGNITION CAMERA Click here

    NG

    REPAIR OR REPLACE CAN BUS MAIN LINE OR CONNECTOR (NO. 6 CAN JUNCTION CONNECTOR - FORWARD RECOGNITION CAMERA)

  7. CHECK FOR OPEN IN CAN BUS MAIN LINES (MILLIMETER WAVE RADAR SENSOR ASSEMBLY)


    1. B002E4DC28
      *a

      Front view of wire harness connector

      (to Millimeter Wave Radar Sensor Assembly)

      Disconnect the millimeter wave radar sensor assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B5-5 (CA1P) - B5-6 (CA1N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

    3. Connect the B5 millimeter wave radar sensor assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY Click here

    NG

    REPAIR OR REPLACE CAN BUS MAIN LINE OR CONNECTOR (NO. 6 CAN JUNCTION CONNECTOR - MILLIMETER WAVE RADAR SENSOR ASSEMBLY)

  8. CHECK FOR OPEN IN CAN BUS BRANCH LINES (DRIVING SUPPORT ECU ASSEMBLY)


    1. B002EYQC44
      *a

      Front view of wire harness connector

      (to Driving Support ECU Assembly)

      Disconnect the driving support ECU assembly connector.

    2. B002DXDC17
      *a

      Front view of wire harness connector

      (to No. 6 CAN Junction Connector)

      Disconnect the No. 6 CAN junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K108-9 (CA1P) - K4-8 (CA1P) Cable disconnected from negative (-) battery terminal Below 1 Ω
      K108-20 (CA1N) - K4-9 (CA1N) Cable disconnected from negative (-) battery terminal Below 1 Ω

    4. Connect the K108 No. 6 CAN junction connector.

    5. Connect the K4 driving support ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NO. 6 CAN JUNCTION CONNECTOR

    NG

    REPAIR OR REPLACE CAN BUS BRANCH WIRE (NO. 6 CAN JUNCTION CONNECTOR - DRIVING SUPPORT ECU ASSEMBLY)

  9. CHECK FOR SHORT BETWEEN CAN BUS LINES (FORWARD RECOGNITION CAMERA)


    1. B002DM9C84
      *a

      Front view of wire harness connector

      (to Forward Recognition Camera)

      Disconnect the forward recognition camera connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W6-6 (CANH) - W6-12 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

    3. Connect the W6 forward recognition camera connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FORWARD RECOGNITION CAMERA Click here

    NG

  10. CHECK FOR SHORT BETWEEN CAN BUS LINES (NO. 6 CAN JUNCTION CONNECTOR)


    1. B002DXDC25
      *a

      Front view of wire harness connector

      (to No. 6 CAN junction connector)
      *b to Forward Recognition Camera
      *c to Driving Support ECU Assembly
      *d to Millimeter Wave Radar Sensor Assembly

      Disconnect the No. 6 CAN junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      K108-19 (CANL) - K108-8 (CANH) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Forward Recognition Camera
      K108-11 (CA1P) - K108-22 (CA1N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Millimeter Wave Radar Sensor Assembly
      K108-9 (CA1P) - K108-20 (CA1N) Cable disconnected from negative (-) battery terminal 200 Ω or higher Driving Support ECU Assembly

    3. Connect the K108 No. 6 CAN junction connector.

      Result
      Result Proceed to
      OK A
      NG (Forward Recognition Camera Main Line) B
      NG (Millimeter Wave Radar Sensor Assembly Main Line) C
      NG (Driving Support ECU Assembly Branch Line) D

    A

    REPLACE NO. 6 CAN JUNCTION CONNECTOR

    B

    REPAIR OR REPLACE CAN BUS MAIN LINE OR CONNECTOR (NO. 6 CAN JUNCTION CONNECTOR - FORWARD RECOGNITION CAMERA)

    D

    CHECK FOR SHORT BETWEEN CAN BUS LINES (DRIVING SUPPORT ECU ASSEMBLY) Click here

    C

  11. CHECK FOR SHORT BETWEEN CAN BUS LINES (MILLIMETER WAVE RADAR SENSOR ASSEMBLY)


    1. B002E4DC30
      *a

      Front view of wire harness connector

      (to Millimeter Wave Radar Sensor Assembly)

      Disconnect the millimeter wave radar sensor assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B5-5 (CA1P) - B5-6 (CA1N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

    3. Connect the B5 millimeter wave radar sensor assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY Click here

    NG

    REPAIR OR REPLACE CAN BUS MAIN LINE OR CONNECTOR (NO. 6 CAN JUNCTION CONNECTOR - MILLIMETER WAVE RADAR SENSOR ASSEMBLY)

  12. CHECK FOR SHORT BETWEEN CAN BUS LINES (DRIVING SUPPORT ECU ASSEMBLY)


    1. B002EYQC45
      *a

      Front view of wire harness connector

      (to Driving Support ECU Assembly)

      Disconnect the driving support ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K4-8 (CA1P) - K4-9 (CA1N) Cable disconnected from negative (-) battery terminal 54 to 69 Ω

    3. Connect the K4 driving support ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE CAN BUS BRANCH LINE OR CONNECTOR (NO. 6 CAN JUNCTION CONNECTOR - DRIVING SUPPORT ECU ASSEMBLY)

  13. CHECK FOR SHORT IN CAN BUS LINE (FORWARD RECOGNITION CAMERA)


    1. Disconnect the forward recognition camera connector.

      B002CKLC05
      *1 DLC3 - -
      *a

      Front view of wire harness connector

      (to Forward Recognition Camera)

      		 - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W6-6 (CANH) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      W6-12 (CANL) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      W6-6 (CANH) - K16-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      W6-12 (CANL) - K16-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher

    3. Connect the W6 forward recognition camera connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FORWARD RECOGNITION CAMERA Click here

    NG

  14. CHECK FOR SHORT IN CAN BUS LINE (NO. 6 CAN JUNCTION CONNECTOR)


    1. Disconnect the No. 6 CAN junction connector.

      B002CD6C09
      *1 DLC3 - -
      *a

      Front view of wire harness connector

      (to No. 1 CAN junction connector)

      		 *b to Forward Recognition Camera
      *c to Driving Support ECU Assembly *d to Millimeter Wave Radar Sensor Assembly

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      K108-19 (CANL) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Forward Recognition Camera
      K108-8 (CANH) - K16-4 (CG)
      K108-19 (CANL) - K16-16 (BAT) 6 kΩ or higher
      K108-8 (CANH) - K16-16 (BAT)
      K108-9 (CA1P) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Driving Support ECU Assembly
      K108-20 (CA1N) - K16-4 (CG)
      K108-9 (CA1P) - K16-16 (BAT) 6 kΩ or higher
      K108-20 (CA1N) - K16-16 (BAT)
      K108-11 (CA1P) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Millimeter Wave Radar Sensor Assembly
      K108-22 (CA1N) - K16-4 (CG)
      K108-11 (CA1P) - K16-16 (BAT) 6 kΩ or higher
      K108-22 (CA1N) - K16-16 (BAT)

    3. Connect the K108 No. 6 CAN junction connector.

      Result
      Result Proceed to
      OK A
      NG (Forward Recognition Camera Main Line) B
      NG (Millimeter Wave Radar Sensor Assembly) C
      NG (Driving Support ECU Assembly Branch Line) D

    A

    REPLACE NO. 6 CAN JUNCTION CONNECTOR

    B

    REPAIR OR REPLACE CAN BUS MAIN LINE OR CONNECTOR (NO. 6 CAN JUNCTION CONNECTOR - FORWARD RECOGNITION CAMERA)

    D

    CHECK FOR SHORT IN CAN BUS LINE (DRIVING SUPPORT ECU ASSEMBLY) Click here

    C

  15. CHECK FOR SHORT IN CAN BUS LINE (MILLIMETER WAVE RADAR SENSOR ASSEMBLY)


    1. Disconnect the millimeter wave radar sensor assembly connector.

      B002DSZC05
      *1 DLC3 - -
      *a

      Front view of wire harness connector

      (to Millimeter Wave Radar Sensor Assembly)

      		 - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B5-5 (CA1P) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      B5-6 (CA1N) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      B5-5 (CA1P) - K16-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      B5-6 (CA1N) - K16-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher

    3. Connect the B5 millimeter wave radar sensor assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY Click here

    NG

    REPAIR OR REPLACE CAN BUS MAIN LINE OR CONNECTOR (NO. 6 CAN JUNCTION CONNECTOR - MILLIMETER WAVE RADAR SENSOR ASSEMBLY)

  16. CHECK FOR SHORT IN CAN BUS LINE (DRIVING SUPPORT ECU ASSEMBLY)


    1. Disconnect the driving support ECU assembly connector.

      B002COAC03
      *1 DLC3 - -
      *a

      Front view of wire harness connector

      (to Driving Support ECU Assembly)

      		 - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K4-8 (CA1P) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      K4-9 (CA1N) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      K4-8 (CA1P) - K16-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      K4-9 (CA1N) - K16-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher

    3. Connect the K4 driving support ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE CAN BUS BRANCH LINE OR CONNECTOR (NO. 6 CAN JUNCTION CONNECTOR - DRIVING SUPPORT ECU ASSEMBLY)

  17. CHECK CAN BUS LINE (MALFUNCTION CONFIRMATION)


    1. Turn the engine switch off.

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

    3. B002CVUC11
      *a

      Component with harness connected

      (Driving Support ECU Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition Result
      K4-8 (CA1P) - K4-9 (CA1N) Cable disconnected from negative (-) battery terminal 54 to 69 Ω

      Below 54 Ω:

      Short circuit between bus lines

      70 Ω or more:

      Open circuit in a main bus line or driving support ECU assembly branch line
      K4-8 (CA1P) - K4-28 (GND) Cable disconnected from negative (-) battery terminal 200 Ω or higher

      Below 200 Ω:

      CANH ground short
      K4-9 (CA1N) - K4-28 (GND) Cable disconnected from negative (-) battery terminal 200 Ω or higher

      Below 200 Ω:

      CANH ground short
      K4-8 (CA1P) - K4-7 (B) Cable disconnected from negative (-) battery terminal 6 kΩ or higher

      Below 6 kΩ:

      CANH +B short
      K4-9 (CA1N) - K4-7 (B) Cable disconnected from negative (-) battery terminal 6 kΩ or higher

      Below 6 kΩ:

      CANH +B short
      Result
      Result Proceed to
      OK A
      NG (Open circuit in main line or Driving support ECU assembly branch line) B
      NG (Short circuit between main lines) C
      NG (Short to +B or ground) D

    B

    CHECK FOR OPEN IN CAN BUS BRANCH LINES (DRIVING SUPPORT ECU ASSEMBLY) Click here

    C

    CHECK FOR SHORT BETWEEN CAN BUS LINES (FORWARD RECOGNITION CAMERA) Click here

    D

    CHECK FOR SHORT IN CAN BUS LINE (FORWARD RECOGNITION CAMERA (CAMERA SENSOR)) Click here

    A

  18. CHECK FOR DTCs (PRE-CRASH SAFETY SYSTEM)


    1. Clear the DTCs.

      Click here


      Body Electrical > Pre-Crash 2 > Clear DTCs

    2. Perform the following procedure.

      Tech Tips

      If the following procedure is not performed, the previously output DTC cannot be detected.


      1. Turn the engine switch on (IG) and wait 2 seconds or more.

    3. Check for DTCs.

      Click here


      Body Electrical > Pre-Crash 2 > Trouble Codes
      Result
      Result Proceed to
      DTC U1002 is not output A
      DTC U1002 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

  19. CHECK FOR OPEN IN CAN BUS BRANCH LINES (DRIVING SUPPORT ECU ASSEMBLY)


    1. B002EYQC43
      *a

      Front view of wire harness connector

      (to Driving Support ECU Assembly)

      Disconnect the driving support ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K4-8 (CA1P) - K4-9 (CA1N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Tech Tips

      If the resistance is between 108 and 132 Ω, there may be an open in a CAN bus main line. If the value is 132 Ω or more, there may be an open in a CAN bus branch line between the No. 6 CAN junction connector and the driving support ECU or a connector may be disconnected.

    3. Connect the K4 driving support ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    CHECK FOR OPEN IN CAN BUS BRANCH LINES (DRIVING SUPPORT ECU ASSEMBLY) Click here

    OK

  20. CHECK FOR OPEN IN CAN BUS MAIN LINES (NO. 6 CAN JUNCTION CONNECTOR)


    1. B002DXDC26
      *a

      Front view of wire harness connector

      (to No. 6 CAN Junction Connector)
      *b to Forward Recognition Camera

      Disconnect the No. 6 CAN junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      K108-19 (CANL) - K108-8 (CANH) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Forward Recognition Camera
      K108-11 - K108-22 Cable disconnected from negative (-) battery terminal 108 to 132 Ω No. 1 CAN Junction Connector

    3. Connect the K108 No. 6 CAN junction connector.

      Result
      Result Proceed to
      OK A
      NG (Forward Recognition Camera Main Line) B
      NG (No. 1 CAN Junction Connector Main Line) C

    A

    REPLACE NO. 6 CAN JUNCTION CONNECTOR

    C

    CHECK FOR OPEN IN CAN BUS MAIN LINES (MILLIMETER WAVE RADAR SENSOR ASSEMBLY) Click here

    B

  21. CHECK FOR OPEN IN CAN BUS MAIN LINES (FORWARD RECOGNITION CAMERA)


    1. B002DM9C83
      *a

      Front view of wire harness connector

      (to Forward Recognition Camera)

      Disconnect the forward recognition camera connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W6-6 (CANH) - W6-12 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

    3. Connect the W6 forward recognition camera connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FORWARD RECOGNITION CAMERA Click here

    NG

    REPAIR OR REPLACE CAN BUS MAIN LINE OR CONNECTOR (NO. 6 CAN JUNCTION CONNECTOR - FORWARD RECOGNITION CAMERA)

  22. CHECK FOR OPEN IN CAN BUS MAIN LINES (MILLIMETER WAVE RADAR SENSOR ASSEMBLY)


    1. B002E4DC28
      *a

      Front view of wire harness connector

      (to Millimeter Wave Radar Sensor Assembly)

      Disconnect the millimeter wave radar sensor assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B5-5 (CA1P) - B5-6 (CA1N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

    3. Connect the B5 millimeter wave radar sensor assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY Click here

    NG

  23. CHECK FOR OPEN IN CAN BUS MAIN LINES (NO. 1 CAN JUNCTION CONNECTOR)


    1. B002DXDC15
      *a

      Front view of wire harness connector

      (to No. 1 CAN Junction Connector)

      Disconnect the No. 1 CAN junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      A39-4 - A39-15 Cable disconnected from negative (-) battery terminal 108 to 132 Ω No. 6 CAN Junction Connector
      A39-3 (CA1P) - A39-14 (CA1N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Millimeter Wave Radar Sensor Assembly

    3. Connect the A39 No. 1 CAN junction connector.

      Result
      Result Proceed to
      OK A
      NG (No. 6 CAN Junction Connector Main Line) B
      NG (Millimeter Wave Radar Sensor Assembly Main Line) C

    A

    REPLACE NO. 1 CAN JUNCTION CONNECTOR

    B

    REPAIR OR REPLACE CAN BUS MAIN LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - NO. 6 CAN JUNCTION CONNECTOR)

    C

  24. CHECK FOR OPEN IN CAN BUS BRANCH LINES (MILLIMETER WAVE RADAR SENSOR ASSEMBLY)


    1. B002E4DC29
      *a

      Front view of wire harness connector

      (to Millimeter Wave Radar Sensor Assembly)

      Disconnect the millimeter wave radar sensor assembly connector.

    2. B002DXDC16
      *a

      Front view of wire harness connector

      (to No. 1 CAN Junction Connector)

      Disconnect the No. 1 CAN junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A39-3 (CA1P) - B5-5 (CA1P) Cable disconnected from negative (-) battery terminal Below 1 Ω
      A39-14 (CA1N) - B5-6 (CA1N) Cable disconnected from negative (-) battery terminal Below 1 Ω

    4. Connect the A39 No. 1 CAN junction connector.

    5. Connect the B5 millimeter wave radar sensor assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NO. 1 CAN JUNCTION CONNECTOR

    NG

    REPAIR OR REPLACE CAN BUS BRANCH WIRE (NO. 1 CAN JUNCTION CONNECTOR - MILLIMETER WAVE RADAR SENSOR ASSEMBLY)

  25. CHECK FOR OPEN IN CAN BUS BRANCH LINES (DRIVING SUPPORT ECU ASSEMBLY)


    1. B002EYQC44
      *a

      Front view of wire harness connector

      (to Driving Support ECU Assembly)

      Disconnect the driving support ECU assembly connector.

    2. B002DXDC17
      *a

      Front view of wire harness connector

      (to No. 6 CAN Junction Connector)

      Disconnect the No. 6 CAN junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K108-9 (CA1P) - K4-8 (CA1P) Cable disconnected from negative (-) battery terminal Below 1 Ω
      K108-20 (CA1N) - K4-9 (CA1N) Cable disconnected from negative (-) battery terminal Below 1 Ω

    4. Connect the K108 No. 6 CAN junction connector.

    5. Connect the K4 driving support ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NO. 6 CAN JUNCTION CONNECTOR

    NG

    REPAIR OR REPLACE CAN BUS BRANCH WIRE (NO. 6 CAN JUNCTION CONNECTOR - DRIVING SUPPORT ECU ASSEMBLY)

  26. CHECK FOR SHORT BETWEEN CAN BUS LINES (FORWARD RECOGNITION CAMERA)


    1. B002DM9C84
      *a

      Front view of wire harness connector

      (to Forward Recognition Camera)

      Disconnect the forward recognition camera connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W6-6 (CANH) - W6-12 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

    3. Connect the W6 forward recognition camera connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FORWARD RECOGNITION CAMERA Click here

    NG

  27. CHECK FOR SHORT BETWEEN CAN BUS LINES (NO. 6 CAN JUNCTION CONNECTOR)


    1. B002DXDC27
      *a

      Front view of wire harness connector

      (to No. 6 CAN junction connector)
      *b to Forward Recognition Camera
      *c to Driving Support ECU Assembly

      Disconnect the No. 6 CAN junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      K108-19 (CANL) - K108-8 (CANH) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Forward Recognition Camera
      K108-11 - K108-22 Cable disconnected from negative (-) battery terminal 108 to 132 Ω No. 1 CAN Junction Connector
      K108-9 (CA1P) - K108-20 (CA1N) Cable disconnected from negative (-) battery terminal 200 Ω or higher Driving Support ECU Assembly

    3. Connect the K108 No. 6 CAN junction connector.

      Result
      Result Proceed to
      OK A
      NG (Forward Recognition Camera Main Line) B
      NG (No. 1 CAN Junction Connector Main Line) C
      NG (Driving Support ECU Assembly Branch Line) D

    A

    REPLACE NO. 6 CAN JUNCTION CONNECTOR

    B

    REPAIR OR REPLACE CAN BUS MAIN LINE OR CONNECTOR (NO. 6 CAN JUNCTION CONNECTOR - FORWARD RECOGNITION CAMERA)

    D

    CHECK FOR SHORT BETWEEN CAN BUS LINES (DRIVING SUPPORT ECU ASSEMBLY) Click here

    C

  28. CHECK FOR SHORT BETWEEN CAN BUS LINES (NO. 1 CAN JUNCTION CONNECTOR)


    1. B002DXDC19
      *a

      Front view of wire harness connector

      (to No. 1 CAN junction connector)
      *b to Millimeter Wave Radar Sensor Assembly
      *c to Headlight Control Computer Assembly LH
      *d to Headlight Control Computer Assembly RH

      Disconnect the No. 1 CAN junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      K39-3 (CA1P) - K39-14 (CA1N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Millimeter Wave Radar Sensor Assembly
      K39-4 - K39-15 Cable disconnected from negative (-) battery terminal 108 to 132 Ω No. 6 CAN Junction Connector
      K39-2 (LCH) - K39-13 (LCL) Cable disconnected from negative (-) battery terminal 200 Ω or higher AHS Light Control ECU Sub-assembly LH
      K39-1 (LCH) - K39-12 (LCL) Cable disconnected from negative (-) battery terminal 200 Ω or higher AHS Light Control ECU Sub-assembly RH

    3. Connect the K39 No. 1 CAN junction connector.

      Result
      Result Proceed to
      OK A
      NG (Millimeter Wave Radar Sensor Assembly Main Line) B
      NG (No. 6 CAN Junction Connector Main Line) C
      NG (Headlight Control Computer Assembly LH Branch Line) D
      NG (Headlight Control Computer Assembly RH Branch Line) E

    A

    REPLACE NO. 1 CAN JUNCTION CONNECTOR

    C

    REPAIR OR REPLACE CAN BUS MAIN LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - NO. 6 CAN JUNCTION CONNECTOR)

    D

    CHECK FOR SHORT BETWEEN CAN BUS LINES (HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY RH) Click here

    E

    CHECK FOR SHORT BETWEEN CAN BUS LINES (HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY RH) Click here

    B

  29. CHECK FOR SHORT BETWEEN CAN BUS LINES (MILLIMETER WAVE RADAR SENSOR ASSEMBLY)


    1. B002E4DC30
      *a

      Front view of wire harness connector

      (to Millimeter Wave Radar Sensor Assembly)

      Disconnect the millimeter wave radar sensor assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B5-5 (CA1P) - B5-6 (CA1N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

    3. Connect the B5 millimeter wave radar sensor assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY Click here

    NG

    REPAIR OR REPLACE CAN BUS MAIN LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - MILLIMETER WAVE RADAR SENSOR ASSEMBLY)

  30. CHECK FOR SHORT BETWEEN CAN BUS LINES (DRIVING SUPPORT ECU ASSEMBLY)


    1. B002EYQC45
      *a

      Front view of wire harness connector

      (to Driving Support ECU Assembly)

      Disconnect the driving support ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K4-8 (CA1P) - K4-9 (CA1N) Cable disconnected from negative (-) battery terminal 54 to 69 Ω

    3. Connect the K4 driving support ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE CAN BUS BRANCH LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - DRIVING SUPPORT ECU ASSEMBLY)

  31. CHECK FOR SHORT BETWEEN CAN BUS LINES (HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY RH)


    1. B002ESAC05
      *a

      Front view of wire harness connector

      (to Headlight Control Computer Assembly LH)

      Disconnect the headlight control computer assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A29-22 (LCH) - A29-21 (LCL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω

    3. Connect the A29 headlight control computer assembly LH connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY LH Click here

    NG

    REPAIR OR REPLACE CAN BUS BRANCH LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY LH)

  32. CHECK FOR SHORT BETWEEN CAN BUS LINES (HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY RH)


    1. B002ESAC06
      *a

      Front view of wire harness connector

      (to Headlight Control Computer Assembly RH)

      Disconnect the headlight control computer assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A30-22 (LCH) - A30-21 (LCL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω

    3. Connect the A30 headlight control computer assembly RH connector.

      Result
      Proceed to
      OK
      NG

    OK

    Use the same procedure as for the headlight light control ECU sub-assembly LH. Click here

    NG

    REPAIR OR REPLACE CAN BUS BRANCH LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY RH)

  33. CHECK FOR SHORT IN CAN BUS LINE (FORWARD RECOGNITION CAMERA (CAMERA SENSOR))


    1. Disconnect the forward recognition camera connector.

      B002CKLC05
      *1 DLC3 - -
      *a

      Front view of wire harness connector

      (to Forward Recognition Camera)

      		 - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W6-6 (CANH) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      W6-12 (CANL) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      W6-6 (CANH) - K16-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      W6-12 (CANL) - K16-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher

    3. Connect the W6 forward recognition camera connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FORWARD RECOGNITION CAMERA Click here

    NG

  34. CHECK FOR SHORT IN CAN BUS LINE (NO. 6 CAN JUNCTION CONNECTOR)


    1. Disconnect the No. 6 CAN junction connector.

      B002CD6C10
      *1 DLC3 - -
      *a

      Front view of wire harness connector

      (to No. 1 CAN junction connector)

      		 *b to Forward Recognition Camera
      *c to Driving Support ECU Assembly - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      K108-19 (CANL) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Forward Recognition Camera
      K108-8 (CANH) - K16-4 (CG)
      K108-19 (CANL) - K16-16 (BAT) 6 kΩ or higher
      K108-8 (CANH) - K16-16 (BAT)
      K108-9 (CA1P) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Driving Support ECU Assembly
      K108-20 (CA1N) - K16-4 (CG)
      K108-9 (CA1P) - K16-16 (BAT) 6 kΩ or higher
      K108-20 (CA1N) - K16-16 (BAT)
      K108-11 - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher No. 1 CAN Junction Connector
      K108-22 - K16-4 (CG)
      K108-11 - K16-16 (BAT) 6 kΩ or higher
      K108-22 - K16-16 (BAT)

    3. Connect the K108 No. 6 CAN junction connector.

      Result
      Result Proceed to
      OK A
      NG (Forward Recognition Camera Main Line) B
      NG (No. 1 CAN Junction Connector Main Line) C
      NG (Driving Support ECU Assembly Branch Line) D

    A

    REPLACE NO. 6 CAN JUNCTION CONNECTOR

    B

    REPAIR OR REPLACE CAN BUS MAIN LINE OR CONNECTOR (NO. 6 CAN JUNCTION CONNECTOR - FORWARD RECOGNITION CAMERA)

    D

    CHECK FOR SHORT IN CAN BUS LINE (DRIVING SUPPORT ECU ASSEMBLY) Click here

    C

  35. CHECK FOR SHORT IN CAN BUS LINE (MILLIMETER WAVE RADAR SENSOR ASSEMBLY)


    1. Disconnect the millimeter wave radar sensor assembly connector.

      B002DSZC05
      *1 DLC3 - -
      *a

      Front view of wire harness connector

      (to Millimeter Wave Radar Sensor Assembly)

      		 - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B5-5 (CA1P) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      B5-6 (CA1N) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      B5-5 (CA1P) - K16-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      B5-6 (CA1N) - K16-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher

    3. Connect the B5 millimeter wave radar sensor assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY Click here

    NG

  36. CHECK FOR SHORT IN CAN BUS LINE (NO. 1 CAN JUNCTION CONNECTOR)


    1. Disconnect the No. 1 CAN junction connector.

      B002CD6C06
      *1 DLC3 - -
      *a

      Front view of wire harness connector

      (to No. 1 CAN junction connector)

      		 *b to Headlight Control Computer Assembly LH
      *c to Millimeter Wave Radar Sensor Assembly *d to Headlight Control Computer Assembly RH

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      A39-3 (CA1P) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Millimeter Wave Radar Sensor Assembly
      A39-14 (CA1N) - K16-4 (CG)
      A39-3 (CA1P) - K16-16 (BAT) 6 kΩ or higher
      A39-14 (CA1N) - K16-16 (BAT)
      A39-4 - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher No. 6 CAN Junction Connector
      A39-15 - K16-4 (CG)
      A39-4 - K16-16 (BAT) 6 kΩ or higher
      A39-15 - K16-16 (BAT)
      A39-2 (LCH) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Headlight Control Computer Assembly LH
      A39-13 (LCL) - K16-4 (CG)
      A39-2 (LCH) - K16-16 (BAT) 6 kΩ or higher
      A39-13 (LCL) - K16-16 (BAT)
      A39-1 (LCH) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Headlight Control Computer Assembly RH
      A39-12 (LCL) - K16-4 (CG)
      A39-1 (LCH) - K16-16 (BAT) 6 kΩ or higher
      A39-12 (LCL) - K16-16 (BAT)

    3. Connect the A39 No. 1 CAN junction connector.

      Result
      Result Proceed to
      OK A
      NG (Millimeter Wave Radar Sensor Assembly Main Line) B
      NG (No. 6 CAN Junction Connector Main Line) C
      NG (Headlight Control Computer Assembly LH Branch Line) D
      NG (Headlight Control Computer Assembly RH Branch Line) E

    A

    REPLACE NO. 1 CAN JUNCTION CONNECTOR

    B

    REPAIR OR REPLACE CAN BUS MAIN LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - MILLIMETER WAVE RADAR SENSOR ASSEMBLY)

    C

    REPAIR OR REPLACE CAN BUS MAIN LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - NO. 6 CAN JUNCTION CONNECTOR)

    D

    CHECK FOR SHORT IN CAN BUS LINE (HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY LH) Click here

    E

    CHECK FOR SHORT IN CAN BUS LINE (HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY RH) Click here

  37. CHECK FOR SHORT IN CAN BUS LINE (DRIVING SUPPORT ECU ASSEMBLY)


    1. Disconnect the driving support ECU assembly connector.

      B002COAC03
      *1 DLC3 - -
      *a

      Front view of wire harness connector

      (to Driving Support ECU Assembly)

      		 - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K4-8 (CA1P) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      K4-9 (CA1N) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      K4-8 (CA1P) - K16-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      K4-9 (CA1N) - K16-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher

    3. Connect the K4 driving support ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE CAN BUS BRANCH LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - DRIVING SUPPORT ECU ASSEMBLY)

  38. CHECK FOR SHORT IN CAN BUS LINE (HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY LH)


    1. Disconnect the headlight light control ECU sub-assembly LH connector.

      B002DC5C06
      *1 DLC3 - -
      *a

      Front view of wire harness connector

      (to AHS Light Control ECU Sub-assembly LH)

      		 - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A29-22 (LCH) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      A29-21 (LCL) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      A29-22 (LCH) - K16-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      A29-21 (LCL) - K16-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher

    3. Connect the A29 headlight light control ECU sub-assembly LH connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY LH Click here

    NG

    REPAIR OR REPLACE CAN BUS BRANCH LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY LH)

  39. CHECK FOR SHORT IN CAN BUS LINE (HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY RH)


    1. Disconnect the headlight light control ECU sub-assembly RH connector.

      B002DC5C07
      *1 DLC3 - -
      *a

      Front view of wire harness connector

      (to AHS Light Control ECU Sub-assembly RH)

      		 - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A30-22 (LCH) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      A30-21 (LCL) - K16-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      A30-22 (LCH) - K16-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      A30-21 (LCL) - K16-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher

    3. Connect the A30 headlight light control ECU sub-assembly RH connector.

      Result
      Proceed to
      OK
      NG

    OK

    Use the same procedure as for the headlight light control ECU sub-assembly LH. Click here

    NG

    REPAIR OR REPLACE CAN BUS BRANCH LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY RH)