CAN COMMUNICATION SYSTEM Front Camera Module Communication Stop Mode

DESCRIPTION

Detection Item Symptom Trouble Area
Front Camera Module Communication Stop Mode

Any of the following conditions are met:


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

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  • Communication stop history for "Front Camera Module" is indicated on the "Communication Bus Check (Detail)" screen of the GTS. (The Lost Communication Time value for "Front Camera Module" is 6 or more.)

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

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  • Forward recognition camera branch line or connector

  • Power source circuit of forward recognition camera

  • Forward recognition camera ground circuit

  • Forward recognition camera

WIRING DIAGRAM

B0071C7E57
*a No. 1 CAN Junction Connector
*b ECU-IG1 NO. 3
*c from IG1-NO. 1 Relay
*d Forward Recognition Camera

CAUTION / NOTICE / HINT

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.

Note


  • 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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  • Before measuring the resistance of the CAN bus, turn the ignition 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 ignition 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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  • After performing repairs, perform the DTC check procedure and confirm that the DTCs are not output again.

    DTC check procedure: Turn the ignition switch to ON and wait for 1 minute or more. Then operate the suspected malfunctioning system and drive the vehicle at 60 km/h (37 mph) or more for 5 minutes or more.

  • 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


  • Before disconnecting related connectors for inspection, push in on each connector body to check that the connector is not loose or disconnected.

  • When a connector is disconnected, check that the terminals and connector body are not cracked, deformed or corroded.

PROCEDURE


  1. CHECK FOR OPEN IN CAN BUS LINES (FORWARD RECOGNITION CAMERA BRANCH LINE)


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

    2. Disconnect the V6 forward recognition camera connector.

    3. B0070SEC01
      *a

      Front view of wire harness connector

      (to Forward Recognition Camera)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      V6-5 (CA1P) - V6-11 (CA1N) Cable disconnected from negative (-) battery terminal 54 to 69 Ω
      Result
      Result
      OK
      NG

    NG

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

    OK

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)


    1. B0070SEC02
      *a

      Front view of wire harness connector

      (to Forward Recognition Camera)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      V6-10 (GND) - 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
      V6-7 (IGB) - Body ground Ignition switch ON 11 to 14 V
      Result
      Result
      OK
      NG

    OK

    REPLACE FORWARD RECOGNITION CAMERA Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)