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:


  • "Display and Navigation (AVN1)" is not displayed on the CAN Bus Check screen of the GTS

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

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  • 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. V Bus (for LHD) (w/ Navigation System or Radio and Display Type with Parallel Parking Assist Function):

B003V97E02

Figure 2. V Bus (for LHD) (w/ Radio and Display Type without Parallel Parking Assist Function):

B003TY8E03

Figure 3. V Bus (for RHD) (w/ Navigation System or Radio and Display Type with Parallel Parking Assist Function):

B003UFZE01

Figure 4. V Bus (for RHD) (w/ Radio and Display Type without Parallel Parking Assist Function):

B003TDHE02

CAUTION / NOTICE / HINT

Note


  • 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, 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.

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  • 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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  • 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 30 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.

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

Tech Tips


  • Operating the engine switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.

  • 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 VEHICLE TYPE


    1. Check vehicle type.

      Result
      Result Proceed to
      w/ Navigation System or Radio and Display Type with Parallel Parking Assist Function A
      w/ Radio and Display Type without 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 LINE 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 LINE 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. B003T4SC02
      *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
      K70-1 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      K70-3 (ACC1) - Body ground Engine switch on (ACC) 11 to 14 V
      K70-4 (+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)

  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. B003T4SC02
      *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
      K70-1 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      K70-3 (ACC1) - Body ground Engine switch on (ACC) 11 to 14 V
      K70-4 (+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)