METER / GAUGE SYSTEM, Diagnostic DTC:B1321

DTC Code DTC Name
B1321 Lost Communication with EMV

DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area Memory
B1321 Lost Communication with EMV

  • DTC Detection Condition: IG+ voltage 9.5 to 11.5 V or higher

  • Malfunction Status: Lost communication with radio receiver assembly

  • Malfunction Duration: 30 seconds or more

  • Harness or connector

  • Radio receiver assembly

  • Combination meter assembly

  • No. 4 CAN junction connector

 DTC stored

WIRING DIAGRAM

B000VINE02
*a Combination Meter Assembly
*b No. 4 CAN Junction Connector
*c Radio Receiver Assembly
*d Local Bus Communication Line

CAUTION / NOTICE / HINT

Note


  • 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

  • When disconnecting the cable from the negative (-) battery terminal while performing repairs, some systems need to be initialized after the cable is reconnected.

    Click here

  • When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

  • The following malfunctions may occur if a radio receiver assembly from another vehicle is installed to this vehicle. Therefore, when replacing the radio receiver assembly, be sure to replace it with new one.


    • Communication malfunction DTC is output

    • Does not operate normally

Tech Tips


  • B1321 will not continue to output when clear DTC is performed even if the malfunction continues.

  • Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed.

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PROCEDURE


  1. CHECK FOR DTC (NAVIGATION SYSTEM)


    1. Check if navigation system DTCs are output.

      Click here


      Body Electrical > Navigation System > Trouble Codes
      Result
      Result Proceed to
      Navigation system DTCs are not output. A
      Navigation system DTCs are output. B

    B

    GO TO NAVIGATION SYSTEM Click here

    A

  2. CHECK HARNESS AND CONNECTOR (NO. 4 CAN JUNCTION CONNECTOR - RADIO RECEVER ASSEMBLY)

    B000Z4FC49
    *a

    Rear view of wire harness connector

    (to No. 4 CAN Junction Connector)

    1. Disconnect the No. 4 CAN junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P116-4 - P116-15 Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (RADIO RECEVER ASSEMBLY - NO. 4 CAN JUNCTION CONNECTOR) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (NO. 4 CAN JUNCTION CONNECTOR - COMBINATION METER ASSEMBLY)

    B000Z4FC49
    *a

    Rear view of wire harness connector

    (to No. 4 CAN Junction Connector)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P116-1 - P116-12 Cable disconnected from negative (-) battery terminal 200 Ω or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NO. 4 CAN JUNCTION CONNECTOR

    NG

  4. CHECK HARNESS AND CONNECTOR (NO. 4 CAN JUNCTION CONNECTOR - COMBINATION METER ASSEMBLY)

    B000XL4C10
    *a

    Front view of wire harness connector

    (to Combination Meter Assembly Connector)

    1. Disconnect the combination meter assembly connector.

    2. Reconnect the P116 No. 4 CAN junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P26-10(TX+) - P26-9(TX-) Cable disconnected from negative (-) battery terminal 54 to 69 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. CHECK HARNESS AND CONNECTOR (RADIO RECEVER ASSEMBLY - NO. 4 CAN JUNCTION CONNECTOR)

    B000ZB3C07
    *a

    Front view of wire harness connector

    (to Radio Recever Assembly Connector)

    1. Disconnect the radio recever assembly connector.

    2. Reconnect the P116 No. 4 CAN junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P46-5(CNH1) - P46-6(CNL1) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR