CAN COMMUNICATION SYSTEM(w/ Central Gateway ECU) Front Camera Module Communication Stop Mode

DESCRIPTION

Detection Item Symptom Trouble Area
Front Camera Module Communication Stop Mode

Either condition is met:


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

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

  • Forward recognition camera branch line or connector

  • Power source circuit of forward recognition camera

  • Forward recognition camera ground circuit

  • Forward recognition camera

WIRING DIAGRAM

A0004XOE05

CAUTION / NOTICE / HINT

Note


  • Before measuring the resistance of the CAN bus, turn the power 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 (-) auxiliary battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.

  • After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work Click here.

  • 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 Click here.

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

  • DTC check procedure: Turn the power switch on (IG), turn the LDA main switch on, wait at least 52 seconds and then drive the vehicle at a speed of 1 km/h (or 1 mph) or more for 7 seconds 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 Click here.

Tech Tips


  • Operating the power 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 (FORWARD RECOGNITION CAMERA BRANCH LINE)


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

    2. A0003RRE04
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Forward Recognition Camera)

      Disconnect the T12 forward recognition camera connector.

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

      Standard Resistance
      Tester Connection Condition Specified Value
      T12-5 (CA1P) - T12-11 (CA1N) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω

    NG

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

    OK

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)


    1. A0008NAE05
      Text in Illustration
      *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 Value
      T12-10 (GND) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω

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

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

      Standard Voltage
      Tester Connection Condition Specified Value
      T12-7 (IGB) - Body ground Power switch on (IG) 11 to 14 V

    OK

    REPLACE FORWARD RECOGNITION CAMERA Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)