PRE-COLLISION SYSTEM(for Stereo Camera Type), Diagnostic DTC:U114B87

DTC Code DTC Name
U114B87 Lost Communication with Image Processing Module "A" (ch2) Missing Message

DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from
U114B87 Lost Communication with Image Processing Module "A" (ch2) Missing Message

    Detection condition:

  • 3 seconds or more elapsed after power switch is on (IG)


    Malfunction status:

  • A communication malfunction with the object recognition camera is detected

  • Local bus (Open or short)

  • Driving support ECU assembly

  • Object recognition camera

  • Driving support ECU assembly (Pre-collision system)

  • Driving support ECU assembly (Driving support computer)

WIRING DIAGRAM

B004Y6ME02
*a Object Recognition Camera
*b Driving Support ECU Assembly

CAUTION / NOTICE / HINT

Note


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

  • If the object recognition camera has been replaced with a new one, be sure to perform object recognition camera adjustment.

    Click here

PROCEDURE


  1. CHECK CAN BUS WIRE (DRIVING SUPPORT ECU ASSEMBLY MEIN WIRE)


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

    2. Disconnect the G67 driving support ECU assembly

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G67-15 (CA2P) - G67-14 (CA2N) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      G67-15 (CA2P) - G20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      G67-14 (CA2N) - G20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      G67-15 (CA2P) - G20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      G67-14 (CA2N) - G20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    RECONNECT CONNECTOR Click here

    OK

  2. CHECK OBJECT RECOGNITION CAMERA


    1. Temporarily replace the object recognition camera with a new one.

      Click here

    2. Clear the DTCs.

      Click here


      Body Electrical > Driving Support Computer > Clear DTCs
      Body Electrical > Pre-Collision System > Clear DTCs
      Chassis > Lane Control > Clear DTCs

    3. Check for DTCs.

      Click here


      Body Electrical > Driving Support Computer > Trouble Codes
      Body Electrical > Pre-Collision System > Trouble Codes
      Chassis > Lane Control > Trouble Codes
      OK
      DTC U114B87 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    END (OBJECT RECOGNITION CAMERA WAS DEFECTIVE)

    NG

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

  3. RECONNECT CONNECTOR


    1. Reconnect the G67 driving support ECU assembly

      Result
      Proceed to
      NEXT

    NEXT

  4. CHECK CAN BUS WIRE (OBJECT RECOGNITION CAMERA MEIN WIRE)


    1. Disconnect the N5 object recognition camera

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N5-4 (CA2P) - N5-3 (CA2N) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      N5-4 (CA2P) - G20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      N5-3 (CA2N) - G20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      N5-4 (CA2P) - G20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      N5-3 (CA2N) - G20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR

    OK

  5. CHECK OBJECT RECOGNITION CAMERA


    1. Temporarily replace the object recognition with a new one.

      Click here

    2. Clear the DTCs.

      Click here


      Body Electrical > Driving Support Computer > Clear DTCs
      Body Electrical > Pre-Collision System > Clear DTCs
      Chassis > Lane Control > Clear DTCs

    3. Check for DTCs.

      Click here


      Body Electrical > Driving Support Computer > Trouble Codes
      Body Electrical > Pre-Collision System > Trouble Codes
      Chassis > Lane Control > Trouble Codes
      OK
      DTC U114B87 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    END (OBJECT RECOGNITION CAMERA WAS DEFECTIVE)

    NG

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here