CAN COMMUNICATION SYSTEM Front Television Camera Communication Stop Mode

DESCRIPTION

Detection Item Symptom Trouble Area
Front television Camera Communication Stop Mode

Either condition is met:


  • "Front Camera" is not displayed on the CAN Bus Check screen of the GTS.

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  • Communication system DTCs (DTCs that start with U) that correspond to "Front television Camera Communication Stop Mode" in "DTC Combination Table" are output.

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  • Front television camera assembly branch line or connector

  • Power source circuit of front television camera assembly

  • Front television camera assembly ground circuit

  • Front television camera assembly

WIRING DIAGRAM

B007XOOE43
*a No. 3 CAN Junction Connector
*b from Parking Assist ECU
*c to Parking Assist ECU
*d Front Television Camera Assembly

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.

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  • Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output.

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  • After performing repairs, perform the DTC check procedure and confirm that the DTCs are not output again.

  • DTC check procedure: Turn the engine switch on (IG) and wait for at least 5 seconds.

  • After the repair, perform the CAN bus check and check that all the ECUs and sensors connected to the CAN communication system are displayed.

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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. CHECK FOR OPEN IN CAN BUS LINES (FRONT TELEVISION CAMERA ASSEMBLY BRANCH WIRE)


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

    2. B007XSSC05
      *a

      Front view of wire harness connector

      (to Front Television Camera Assembly)

      Disconnect the p1 front television camera assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      p1-4 (CANH) - p1-1 (CANL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω
      Result
      Result
      OK
      NG

    NG

    REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (FRONT TELEVISION CAMERA ASSEMBLY)

    OK

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)


    1. B007XSSC06
      *a

      Front view of wire harness connector

      (to Front Television Camera Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      p1-5 (BGND) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω

    2. Reconnect the cable to the negative (-) battery terminal.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      p1-6 (BCB+) - Body ground Engine switch on (ACC) 5.5 to 7.05 V
      Result
      Result
      OK
      NG

    OK

    REPLACE FRONT TELEVISION CAMERA ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)