CAN COMMUNICATION SYSTEM Radio Receiver Assembly Communication Stop Mode

DESCRIPTION

Detection Item Symptom Trouble Area
Radio Receiver Assembly Communication Stop Mode

Either condition is met:


  • Communication stop for "Display and Navigation (AVN1)" is indicated on the "Communication Bus Check" screen of the GTS.

    Click here

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

    Click here


  • Radio receiver assembly branch line or connector

  • Power source circuit of radio receiver assembly

  • Radio receiver assembly ground circuit

  • Radio receiver assembly

WIRING DIAGRAM

Figure 1. w/ Navigation System or Audio and Visual System with Parallel Parking Assist Function:

B003WM3E02

Figure 2. w/ Audio and Visual System w/o Parallel Parking Assist Function:

B003UBRE01

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.

    Click here

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

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

    Click here

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

    DTC check procedure: Turn the engine switch on (IG) and wait at least 31 seconds.

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

    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 VEHICLE TYPE


    1. Check vehicle type.

      Result
      Result Proceed to
      w/ Navigation System or Audio and Visual System with Parallel Parking Assist Function A
      w/ Audio and Visual System w/o Parallel Parking Assist Function B

    B

    CHECK FOR OPEN IN CAN BUS LINES (RADIO RECEIVER ASSEMBLY BRANCH LINE) Click here

    A

  2. CHECK FOR OPEN IN CAN BUS LINES (RADIO RECEIVER ASSEMBLY BRANCH LINE)


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

    2. B003V3ZC20
      *a

      Front view of wire harness connector

      (to Radio Receiver Assembly)

      Disconnect the K58 radio receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K58-1 (CANH) - K58-2 (CANL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω
      Result
      Result Proceed to
      OK (w/o Stop and Start System) A
      OK (w/ Stop and Start System) B
      NG C

    B

    CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) Click here

    C

    REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (RADIO RECEIVER ASSEMBLY)

    A

  3. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)


    1. B003V3ZC21
      *a

      Front view of wire harness connector

      (to Radio Receiver Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K58-12 (GND1) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω

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

    3. B003V3ZC22
      *a

      Front view of wire harness connector

      (to Radio Receiver Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      K58-15 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      K58-16 (ACC1) - Body ground Engine switch on (ACC) 11 to 14 V
      K58-17 (+B1) - Body ground Always 11 to 14 V
      Result
      Result
      OK
      NG

    OK

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

  4. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)


    1. B003V3ZC21
      *a

      Front view of wire harness connector

      (to Radio Receiver Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K58-12 (GND1) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω

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

    3. B003V3ZC22
      *a

      Front view of wire harness connector

      (to Radio Receiver Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      K58-15 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      K58-16 (ACC1) - Body ground Engine switch on (ACC) 11 to 14 V
      K58-17 (+B1) - Body ground Always 11 to 14 V
      Result
      Result Proceed to
      OK A
      NG (ACC1 or +B1 terminal) B
      NG (Except ACC1 or +B1 terminal) C

    A

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    B

    GO TO STOP AND START SYSTEM (FOR BACKUP BOOST CONVERTER CIRCUIT) Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

  5. CHECK FOR OPEN IN CAN BUS LINES (RADIO RECEIVER ASSEMBLY BRANCH LINE)


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

    2. B003U0TC01
      *a

      Front view of wire harness connector

      (to Radio Receiver Assembly)

      Disconnect the K72 radio receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K72-9 (CANH) - K72-10 (CANL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω
      Result
      Result Proceed to
      OK (w/o Stop and Start System) A
      OK (w/ Stop and Start System) B
      NG C

    B

    CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) Click here

    C

    REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (RADIO RECEIVER ASSEMBLY)

    A

  6. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)


    1. B003T4SC01
      *a

      Front view of wire harness connector

      (to Radio Receiver Assembly)

      Disconnect the K70 radio receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K70-7 (GND1) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω

    3. Reconnect the cable to the negative (-) battery terminal.

    4. B003VLYC12
      *a

      Front view of wire harness connector

      (to Radio Receiver Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      K70-3 (ACC1) - Body ground Engine switch on (ACC) 11 to 14 V
      K70-4 (+B1) - Body ground Always 11 to 14 V
      K72-1 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      Result
      Result
      OK
      NG

    OK

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

  7. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)


    1. B003T4SC01
      *a

      Front view of wire harness connector

      (to Radio Receiver Assembly)

      Disconnect the K70 radio receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K70-7 (GND1) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω

    3. Reconnect the cable to the negative (-) battery terminal.

    4. B003VLYC12
      *a

      Front view of wire harness connector

      (to Radio Receiver Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      K70-3 (ACC1) - Body ground Engine switch on (ACC) 11 to 14 V
      K70-4 (+B1) - Body ground Always 11 to 14 V
      K72-1 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      Result
      Result Proceed to
      OK A
      NG (ACC1 or +B1 terminal) B
      NG (Except ACC1 or +B1 terminal) C

    A

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    B

    GO TO STOP AND START SYSTEM (FOR BACKUP BOOST CONVERTER CIRCUIT) Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)