CAN COMMUNICATION SYSTEM(for RHD) Audio Receiver Assembly Communication Stop Mode

DTC Code DTC Name
Audio Receiver Assembly Communication Stop Mode

DESCRIPTION

Detection Item

Symptom

Trouble Area

Audio Receiver Assembly Communication Stop Mode

Either condition is met:

  • "Display and Navigation (AVN1)" is not displayed on "CAN Bus Check".

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  • Communication system DTCs (DTCs that start with U) that are output correspond to "Audio Receiver Assembly Communication Stop Mode" in "DTC Combination Table".

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  • Power source or inside radio and display receiver assembly

  • Radio and display receiver assembly CAN branch wire or connector

  • Radio and display receiver assembly

  • Engine stop and start ECU*

*: w/ Stop and Start System

  • For vehicles with a radio and display type.

WIRING DIAGRAM

C277479E02

CAUTION / NOTICE / HINT

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, 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 battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work.

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

  • DTC check procedure: Turn the ignition switch to ON and wait at least 60 seconds.

  • After the repair, perform CAN Bus Check and check that all the ECUs and sensors connected to the CAN communication system are displayed.

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Tip:

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

  • 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 WIRE (RADIO AND DISPLAY RECEIVER ASSEMBLY CAN BRANCH WIRE)

    1. E140414C05

      *a

      Front view of wire harness connector

      (to Radio and Display Receiver Assembly)

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

    2. Disconnect the radio and display receiver assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G143-9 (CANH) - G143-10 (CANL)

      Cable disconnected from negative (-) battery terminal

      54 to 69 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY CAN BRANCH WIRE OR CONNECTOR (CANH, CANL)

    OK

  2. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - BATTERY AND BODY GROUND)

    1. C277477C02

      *a

      Front view of wire harness connector

      (to Radio and Display Receiver Assembly)

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

      Note:

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

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    2. Disconnect the radio and display receiver assembly connector.

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

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      G143-1 (IG) - Body ground

      Ignition switch ON

      11 to 14 V

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G141-7 (GND1) - Body ground

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - BATTERY)

    1. C277478C02

      *a

      Front view of wire harness connector

      (to Radio and Display Receiver Assembly)

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      G141-4 (+B1) - Body ground

      Always

      11 to 14 V

      G141-3 (ACC1) - Body ground

      Ignition switch ACC

      11 to 14 V

    Result

    Proceed to

    OK

    NG (w/o Stop and Start System)

    NG (w/ Stop and Start System)
    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

    Click hereClick here

    NG (w/o Stop and Start System)

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    NG (w/ Stop and Start System)

  4. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - ENGINE STOP AND START ECU)

    1. Disconnect the G87 engine stop and start ECU connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G141-4 (+B1) - G87-2 (BO1)

      Always

      Below 1 Ω

      G141-3 (ACC1) - G87-3 (ACO)

      Always

      Below 1 Ω

      G141-4 (+B1) - Body ground

      Always

      10 kΩ or higher

      G141-3 (ACC1) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE ENGINE STOP AND START ECU

    Click hereClick here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR