PRE-COLLISION 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 ECU sub-assembly LH (w/ Adaptive high beam system)

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

  • No. 8 CAN Junction Connector

WIRING DIAGRAM

B005A3WE12

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 driving support ECU assembly, always replace it with a new one. If a driving support ECU assembly which was installed to another vehicle is used, the information stored in the driving support ECU assembly will not match the information from the vehicle. As a result, a DTC may be stored.

  • 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 harness while performing the inspection below may help determine the cause of the malfunction.

PROCEDURE


  1. CHECK CAN BUS LINE (MALFUNCTION CONFIRMATION)


    1. Turn the engine switch off.

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

    3. B005B7PC44
      *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
      I159-8 (CA1P) - I159-9 (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
      I159-8 (CA1P) - I159-28 (GND) Cable disconnected from negative (-) battery terminal 200 Ω or higher

      Below 200 Ω:

      CANH ground short
      I159-9 (CA1N) - I159-28 (GND) Cable disconnected from negative (-) battery terminal 200 Ω or higher

      Below 200 Ω:

      CANH ground short
      I159-8 (CA1P) - I159-7 (B) Cable disconnected from negative (-) battery terminal 6 kΩ or higher

      Below 6 kΩ:

      CANH +B short
      I159-9 (CA1N) - I159-7 (B) Cable disconnected from negative (-) battery terminal 6 kΩ or higher

      Below 6 kΩ:

      CANH +B short

    4. Connect the cable to the negative (-) battery terminal.

      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

  2. CHECK FOR DTCs (PRE-COLLISION SYSTEM)


    1. Clear the DTCs.

      Click here


      Body Electrical > Pre-Collision 2 > Clear DTCs

    2. Make sure that the DTC detection conditions are met.

      Tech Tips

      If the detection conditions are not met, the system cannot detect the malfunction.

    3. Check for DTCs.

      Click here


      Body Electrical > Pre-Collision 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

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


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

    2. B0057RAC92
      *a

      Front view of harness connector

      (to Driving Support ECU Assembly)

      Disconnect the I159 driving support ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I159-8 (CA1P) - I159-9 (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. 8 CAN junction connector and the driving support ECU or a connector may be disconnected.

    4. Connect the I159 driving support ECU assembly connector.

    5. Connect the cable to the negative (-) battery terminal.

      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  4. CHECK FOR OPEN IN CAN BUS MAIN LINES (NO. 8 CAN JUNCTION CONNECTOR)


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

    2. B0059JWC04
      *a

      Front view of harness connector

      (to No. 8 CAN Junction Connector)
      *b to Forward Recognition Camera
      *c to Millimeter Wave Radar Sensor Assembly

      Disconnect the I165 No. 8 CAN junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      I165-2 (CANH) - I165-8 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Forward Recognition Camera
      I165-5 (CA1P) - I165-11 (CA1N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Millimeter Wave Radar Sensor Assembly

    4. Connect the I165 No. 8 CAN junction connector.

    5. Connect the cable to the negative (-) battery terminal.

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

    A

    REPLACE NO. 8 CAN JUNCTION CONNECTOR

    C

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

    B

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


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

    2. B0059WHC01
      *a

      Front view of harness connector

      (to Forward Recognition Camera)

      Disconnect the T17 forward recognition camera connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T17-6 (CANH) - T17-12 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

    4. Connect the T17 forward recognition camera connector.

    5. Connect the cable to the negative (-) battery terminal.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FORWARD RECOGNITION CAMERA Click here

    NG

    REPAIR OR REPLACE CAN BUS MAIN LINE OR CONNECTOR (NO. 8 CAN JUNCTION CONNECTOR - FORWARD RECOGNITION CAMERA)

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


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

    2. B00592DC68
      *a

      Front view of harness connector

      (to Millimeter Wave Radar Sensor Assembly)

      Disconnect the B13 millimeter wave radar sensor assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B13-5 (CA1P) - B13-6 (CA1N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

    4. Connect the B13 millimeter wave radar sensor assembly connector.

    5. Connect the cable to the negative (-) battery terminal.

      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. 8 CAN JUNCTION CONNECTOR - MILLIMETER WAVE RADAR SENSOR ASSEMBLY)

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


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

    2. B0057RAC93
      *a

      Front view of harness connector

      (to Driving Support ECU Assembly)

      Disconnect the I159 driving support ECU assembly connector.

    3. B0059JWC05
      *a

      Front view of harness connector

      (to No. 8 CAN Junction Connector)
      *b to Driving Support ECU Assembly

      Disconnect the I165 No. 8 CAN junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I165-1 (CA1P) - I159-8 (CA1P) Cable disconnected from negative (-) battery terminal Below 1 Ω
      I165-7 (CA1N) - I159-9 (CA1N) Cable disconnected from negative (-) battery terminal Below 1 Ω

    5. Connect the I165 No. 8 CAN junction connector.

    6. Connect the I159 driving support ECU assembly connector.

    7. Connect the cable to the negative (-) battery terminal.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NO. 8 CAN JUNCTION CONNECTOR

    NG

    REPAIR OR REPLACE CAN BUS MAIN LINE OR CONNECTOR (NO. 8 CAN JUNCTION CONNECTOR - DRIVING SUPPORT ECU ASSEMBLY)

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


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

    2. B0057YTC03
      *a

      Front view of harness connector

      (to Forward Recognition Camera)

      Disconnect the T17 forward recognition camera connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T17-6 (CANH) - T17-12 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

    4. Connect the T17 forward recognition camera connector.

    5. Connect the cable to the negative (-) battery terminal.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FORWARD RECOGNITION CAMERA Click here

    NG

  9. CHECK FOR SHORT BETWEEN CAN BUS LINES (NO. 8 CAN JUNCTION CONNECTOR)


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

    2. B0059JWC06
      *a

      Front view of harness connector

      (to No. 8 CAN Junction Connector)
      *b to Forward Recognition Camera
      *c to Millimeter Wave Radar Sensor Assembly
      *d to Driving Support ECU Assembly
      *e Headlight ECU Sub-assembly LH
      *f Headlight ECU Sub-assembly RH

      Disconnect the I165 No. 8 CAN junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      I165-2 (CANH) - I165-8 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Forward Recognition Camera
      I165-5 (CA1P) - I165-11 (CA1N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Millimeter Wave Radar Sensor Assembly
      I165-1 (CA1P) - I165-7 (CA1N) Cable disconnected from negative (-) battery terminal 200 Ω or higher Driving Support ECU Assembly
      I165-3(LCH) - I165-9(LCL) Cable disconnected from negative (-) battery terminal 200 Ω or higher Headlight ECU Sub-assembly LH*
      I165-4(LCH) - I165-10(LCL) Cable disconnected from negative (-) battery terminal 200 Ω or higher Headlight ECU Sub-assembly RH*
      *: w/ Adaptive High Beam System

    4. Connect the I165 No. 8 CAN junction connector.

    5. Connect the cable to the negative (-) battery terminal.

      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
      NG (Headlight ECU Sub-assembly LH Branch Line) E
      NG (Headlight ECU Sub-assembly RH Branch Line) F

    A

    REPLACE NO. 8 CAN JUNCTION CONNECTOR

    B

    REPAIR OR REPLACE CAN BUS MAIN LINE OR CONNECTOR (NO. 8 CAN JUNCTION CONNECTOR - FORWARD RECOGNITION CAMERA)

    D

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

    E

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

    F

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

    C

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


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

    2. B00592DC69
      *a

      Front view of harness connector

      (to Millimeter Wave Radar Sensor Assembly)

      Disconnect the B13 millimeter wave radar sensor assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B13-5 (CA1P) - B13-6 (CA1N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

    4. Connect the B13 millimeter wave radar sensor assembly connector.

    5. Connect the cable to the negative (-) battery terminal.

      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. 8 CAN JUNCTION CONNECTOR - MILLIMETER WAVE RADAR SENSOR ASSEMBLY)

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


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

    2. B0057RAC94
      *a

      Front view of harness connector

      (to Driving Support ECU Assembly)

      Disconnect the I159 driving support ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I159-8 (CA1P) - I159-9 (CA1N) Cable disconnected from negative (-) battery terminal 54 to 69 Ω

    4. Connect the I159 driving support ECU assembly connector.

    5. Connect the cable to the negative (-) battery terminal.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE CAN BUS BRANCH LINE OR CONNECTOR (NO. 8 CAN JUNCTION CONNECTOR - DRIVING SUPPORT ECU ASSEMBLY)

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


    1. B0059JLC28
      *a

      Front view of harness connector

      (to Headlight ECU Sub-assembly LH)

      Disconnect the A19 headlight ECU sub-assembly LH.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A19-22 (LCH) - A19-21 (LCL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω

    3. Connect the A19 headlight ECU sub-assembly LH.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here

    NG

    REPAIR OR REPLACE CAN BUS BRANCH LINE OR CONNECTOR (NO. 8 CAN JUNCTION CONNECTOR - HEADLIGHT ECU SUB-ASSEMBLY LH)

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


    1. B0059JLC29
      *a

      Front view of harness connector

      (to Headlight ECU Sub-assembly RH)

      Disconnect the A20 headlight ECU sub-assembly RH.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A20-22 (LCH) - A20-21 (LCL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω

    3. Connect the A20 headlight ECU sub-assembly RH.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH Click here

    NG

    REPAIR OR REPLACE CAN BUS BRANCH LINE OR CONNECTOR (NO. 8 CAN JUNCTION CONNECTOR - HEADLIGHT ECU SUB-ASSEMBLY RH)

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


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

    2. B0059WHC02
      *a

      Front view of harness connector

      (to Forward Recognition Camera)

      Disconnect the T17 forward recognition camera connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T17-6 (CANH) - Body ground Cable disconnected from negative (-) battery terminal 200 Ω or higher
      T17-12 (CANL) - Body ground Cable disconnected from negative (-) battery terminal 200 Ω or higher
      T17-6 (CANH) - +B Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      T17-12 (CANL) - +B Cable disconnected from negative (-) battery terminal 6 kΩ or higher

    4. Connect the T17 forward recognition camera connector.

    5. Connect the cable to the negative (-) battery terminal.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FORWARD RECOGNITION CAMERA Click here

    NG

  15. CHECK FOR SHORT IN CAN BUS LINE (NO. 8 CAN JUNCTION CONNECTOR)


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

    2. B0059JWC06
      *a

      Front view of harness connector

      (to No. 8 CAN Junction Connector)
      *b to Forward Recognition Camera
      *c to Millimeter Wave Radar Sensor Assembly
      *d to Driving Support ECU Assembly
      *e Headlight ECU Sub-assembly LH
      *f Headlight ECU Sub-assembly RH

      Disconnect the I165 No. 8 CAN junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      I165-2 (CANH) - Body ground Cable disconnected from negative (-) battery terminal 200 Ω or higher Forward Recognition Camera
      I165-8 (CANL) - Body ground
      I165-2 (CANH) - +B 6 kΩ or higher
      I165-8 (CANL) - +B
      I165-5 (CA1P) - Body ground Cable disconnected from negative (-) battery terminal 200 Ω or higher Millimeter Wave Radar Sensor Assembly
      I165-11 (CA1N) - Body ground
      I165-5 (CA1P) - +B 6 kΩ or higher
      I165-11 (CA1N) - +B
      I165-1 (CA1P) - Body ground Cable disconnected from negative (-) battery terminal 200 Ω or higher Driving Support ECU Assembly
      I165-7 (CA1N) - Body ground
      I165-1 (CA1P) - +B 6 kΩ or higher
      I165-7 (CA1N) - +B
      I165-3(LCH) - Body ground Cable disconnected from negative (-) battery terminal 200 Ω or higher Headlight ECU Sub-assembly LH*
      I165-9(LCL) - Body ground
      I165-3(LCH) - +B 6 kΩ or higher
      I165-9(LCL) - +B
      I165-4(LCH) - Body ground Cable disconnected from negative (-) battery terminal 200 Ω or higher Headlight ECU Sub-assembly RH*
      I165-10(LCL) - Body ground
      I165-4(LCH) - +B 6 kΩ or higher
      I165-10(LCL) - +B
      *: w/ Adaptive High Beam System

    4. Connect the I165 No. 8 CAN junction connector.

    5. Connect the cable to the negative (-) battery terminal.

      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
      NG (Headlight ECU Sub-assembly LH Branch Line) E
      NG (Headlight ECU Sub-assembly RH Branch Line) F

    A

    REPLACE NO. 8 CAN JUNCTION CONNECTOR

    B

    REPAIR OR REPLACE CAN BUS MAIN LINE OR CONNECTOR (NO. 8 CAN JUNCTION CONNECTOR - FORWARD RECOGNITION CAMERA)

    D

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

    E

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

    F

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

    C

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


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

    2. B00592DC70
      *a

      Front view of harness connector

      (to Millimeter Wave Radar Sensor Assembly)

      Disconnect the B13 millimeter wave radar sensor assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B13-5 (CA1P) - Body ground Cable disconnected from negative (-) battery terminal 200 Ω or higher
      B13-6 (CA1N) - Body ground Cable disconnected from negative (-) battery terminal 200 Ω or higher
      B13-5 (CA1P) - +B Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      B13-6 (CA1N) - +B Cable disconnected from negative (-) battery terminal 6 kΩ or higher

    4. Connect the B13 millimeter wave radar sensor assembly connector.

    5. Connect the cable to the negative (-) battery terminal.

      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. 8 CAN JUNCTION CONNECTOR - MILLIMETER WAVE RADAR SENSOR ASSEMBLY)

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


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

    2. B0057RAC94
      *a

      Front view of harness connector

      (to Driving Support ECU Assembly)

      Disconnect the I159 driving support ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I159-8 (CA1P) - Body ground Cable disconnected from negative (-) battery terminal 200 Ω or higher
      I159-9 (CA1N) - Body ground Cable disconnected from negative (-) battery terminal 200 Ω or higher
      I159-8 (CA1P) - +B Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      I159-9 (CA1N) - +B Cable disconnected from negative (-) battery terminal 6 kΩ or higher

    4. Connect the I159 driving support ECU assembly connector.

    5. Connect the cable to the negative (-) battery terminal.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE CAN BUS BRANCH LINE OR CONNECTOR (NO. 8 CAN JUNCTION CONNECTOR - DRIVING SUPPORT ECU ASSEMBLY)

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


    1. B0059JLC30
      *a

      Front view of harness connector

      (to Headlight ECU Sub-assembly LH)

      Disconnect the A19 headlight ECU sub-assembly LH.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A19-22 (LCH) - Body ground Cable disconnected from negative (-) battery terminal 200 Ω or higher
      A19-21 (LCL) - Body ground Cable disconnected from negative (-) battery terminal 200 Ω or higher
      A19-22 (LCH) - +B Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      A19-21(LCL) - +B Cable disconnected from negative (-) battery terminal 6 kΩ or higher

    3. Connect the A19 headlight ECU sub-assembly LH.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here

    NG

    REPAIR OR REPLACE CAN BUS BRANCH LINE OR CONNECTOR (NO. 8 CAN JUNCTION CONNECTOR - HEADLIGHT ECU SUB-ASSEMBLY LH)

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


    1. B0059JLC31
      *a

      Front view of harness connector

      (to Headlight ECU Sub-assembly RH)

      Disconnect the A20 headlight ECU sub-assembly RH.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A20-22 (LCH) - Body ground Cable disconnected from negative (-) battery terminal 200 Ω or higher
      A20-21 (LCL) - Body ground Cable disconnected from negative (-) battery terminal 200 Ω or higher
      A20-22 (LCH) - +B Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      A20-21 (LCL) - +B Cable disconnected from negative (-) battery terminal 6 kΩ or higher

    3. Connect the A20 headlight ECU sub-assembly RH.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH Click here

    NG

    REPAIR OR REPLACE CAN BUS BRANCH LINE OR CONNECTOR (NO. 8 CAN JUNCTION CONNECTOR - HEADLIGHT ECU SUB-ASSEMBLY RH)