CAN COMMUNICATION SYSTEM 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 "Bus Check" screen.

  • "Front Camera Module Communication Stop Mode" in "DTC Combination Table" applies.

  • Power source or inside of pre-crash safety city sensor

  • Pre-crash safety city sensor CAN branch wire or connector

  • Pre-crash safety city sensor

For vehicles with a pre-crash safety system.

WIRING DIAGRAM

A0052NUE03
*a No. 1 Junction Connector
*b ECU-IG NO.1
*c from IG1 Relay
*d Pre-crash Safety City Sensor

CAUTION / NOTICE / HINT

Note

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

Tech Tips

Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.

PROCEDURE


  1. PRECAUTION

    Note

    After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work Click here.


    NEXT

  2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL


    1. Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the CAN main wire and the CAN branch wire.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      Note

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


    NEXT

  3. CHECK FOR OPEN IN CAN BUS WIRE (PRE-CRASH SAFETY CITY SENSOR CAN BRANCH WIRE)


    1. A00583LE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Pre-crash Safety City Sensor)

      Disconnect the pre-crash safety city sensor connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      K14-5 (CA1P) - K14-11 (CA1N) Ignition switch off 54 to 69 Ω

    NG

    REPAIR OR REPLACE PRE-CRASH SAFETY CITY SENSOR CAN BRANCH WIRE OR CONNECTOR (CA1P, CA1N)

    OK

  4. CHECK HARNESS OR CONNECTOR (PRE-CRASH SAFETY CITY SENSOR - BATTERY AND BODY GROUND)


    1. A0052Q2E02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Pre-crash Safety City Sensor)

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

      Note

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

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      K14-7 (IG1) - Body ground Ignition switch ON 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K14-10 (GND) - Body ground Always Below 1 Ω

    OK

    REPLACE PRE-CRASH SAFETY CITY SENSOR Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR