CAN COMMUNICATION SYSTEM(for RHD) Front Camera Module Communication Stop Mode

DESCRIPTION

Detection Item Symptom Trouble Area
Front Camera Module Communication Stop Mode

Either condition is met:


  • Communication stop for "Front Camera Module" is indicated on the "Communication Bus Check" screen of the GTS.

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

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  • Power source circuit of forward recognition camera

  • Forward recognition camera ground circuit

  • Forward recognition camera CAN branch wire or connector

  • Forward recognition camera

WIRING DIAGRAM

B002CYBE03
*a No. 5 CAN Junction Connector
*b from LH-IG1 RLY1 Relay
*c Forward Recognition Camera

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), wait at least 60 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 as normal.

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  • Inspect the fuses for circuits related to this system before performing the following procedure.

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 WIRE (FORWARD RECOGNITION CAMERA)


    1. B002CLWC39
      *a

      Front view of wire harness connector

      (to Forward Recognition Camera)

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

    2. Disconnect the forward recognition camera connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W6-5 (CA1P) - W6-11 (CA1N) Cable disconnected from negative (-) battery terminal 54 to 69 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (FORWARD RECOGNITION CAMERA)

    OK

  2. CHECK HARNESS AND CONNECTOR (FORWARD RECOGNITION CAMERA - BATTERY AND BODY GROUND)


    1. B002CLWC40
      *a

      Front view of wire harness connector

      (to Forward Recognition Camera)

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

      Note

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      W6-7 (IGB) - Body ground Engine switch on (IG) 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      W6-10 (GND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FORWARD RECOGNITION CAMERA Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR