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:


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

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

  • Lane departure warning camera branch line or connector

  • Power source circuit of lane departure warning camera

  • Lane departure warning camera ground circuit

  • Lane departure warning camera

WIRING DIAGRAM

A005CQ5E31
*a No. 4 CAN Junction Connector
*b from IG1 NO. 1 Relay
*c ECU-IG1 NO. 2
*d Lane Departure Warning Camera

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) and wait at least 15 seconds, turn the lane departure alert switch on and wait at least 52 seconds and then drive the vehicle at a speed of 1 km/h (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.

  • 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 (LANE DEPARTURE WARNING CAMERA BRANCH LINE)


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

    2. A005D1PE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Lane Departure Warning Camera)

      Disconnect the U13 lane departure warning camera connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      U13-6 (CA1P) - U13-12 (CA1N) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω

    NG

    REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (LANE DEPARTURE WARNING CAMERA)

    OK

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)


    1. A005AKOE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Lane Departure Warning Camera)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      U13-11 (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 Condition
      U13-7 (IGB) - Body ground Power switch switch on (IG) 11 to 14 V

    OK

    REPLACE LANE DEPARTURE WARNING CAMERA Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)