CAN COMMUNICATION SYSTEM (for LHD without Entry and Start System) Display and Navigation Assembly Communication Stop Mode

DESCRIPTION

Detection Item Symptom Trouble Area
Display and Navigation Assembly Communication Stop Mode

Either condition is met:


  • "Display and Navigation (AVN)" is not displayed on "Bus Check".

  • "Display and Navigation Assembly Communication Stop Mode" in "DTC Combination Table" applies.

  • Power source or inside display and navigation module display

  • Display and navigation module display branch wire or connector

  • Display and navigation module display (AVN)

WIRING DIAGRAM

A00O770E09

INSPECTION PROCEDURE

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. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL


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

      CAUTION:

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

      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.

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


    NEXT

  2. CHECK OPEN IN CAN BUS WIRE (DISPLAY AND NAVIGATION MODULE DISPLAY BRANCH WIRE)


    1. A00O9O6E01
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Display and Navigation Module Display [AVN])

      Disconnect the H4 display and navigation module display (AVN) connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      H4-21 (CANH) - H4-22 (CANL) Ignition switch off 54 to 69 Ω

    NG

    REPAIR OR REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY BRANCH WIRE OR CONNECTOR (CANH, CANL)

    OK

  3. CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION MODULE DISPLAY - BATTERY AND BODY GROUND)


    1. A00O9O6E02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Display and Navigation Module Display [AVN])

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H4-10 (GND1) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      H4-1 (+B1) - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY Click here