BLOCKING SYSTEM, Diagnostic DTC:B1573, B15CB

DTC Code DTC Name
B1573 Short in Telephone Antenna Circuit
B15CB Telematics Transceiver Antenna Disconnected

DESCRIPTION

These DTCs are stored when a malfunction occurs in the instrument panel integration antenna assembly (telephone antenna) circuit.

DTC No. DTC Detection Condition Trouble Area
B1573 There is a short circuit in the instrument panel integration antenna assembly between the telephone transceiver assembly and telephone antenna, or at the points where it connects to the telephone transceiver assembly and instrument panel integration antenna assembly.

  • Telephone transceiver assembly

  • Instrument panel integration antenna assembly (telephone antenna)
B15CB There is an open circuit in the instrument panel integration antenna assembly between the telephone transceiver assembly and telephone antenna, or at the points where it connects to the telephone transceiver assembly and instrument panel integration antenna assembly.

INSPECTION PROCEDURE

Note


  • When replacing the telephone transceiver assembly or instrument panel integration antenna assembly, refer to the Service Bulletin.

  • When the telephone transceiver assembly is replaced, it is necessary to set the contract mode.

PROCEDURE


  1. CHECK CONNECTION OF CONNECTOR


    1. Turn the power switch off.

    2. Check that the connectors are properly connected to the telephone transceiver assembly and instrument panel integration antenna assembly (telephone antenna connector).

      OK
      Connectors are properly connected.

    NG

    CONNECT CONNECTOR CORRECTLY

    OK

  2. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  3. CHECK DTC OUTPUT


    1. Check for DTCs Click here.

      OK
      DTC B1573 and B15CB is not output.

    NG

    CHECK CONNECTOR CONDITION Click here

    OK

    END

  4. CHECK CONNECTOR CONDITION


    1. Turn the power switch off.

    2. Disconnect the telephone transceiver assembly (telephone antenna) connector.

      A003W12E06
      Text in Illustration
      *1 Telephone antenna - -
      *a

      Component without harness connected

      (Telephone Transceiver Assembly)

      		 - -

    3. Check that the connector pins are not bent.

      OK
      Connector pins are not bent.

    NG

    REPAIR OR REPLACE INSTRUMENT PANEL INTEGRATION ANTENNA ASSEMBLY

    OK

  5. CHECK INSTRUMENT PANEL INTEGRATION ANTENNA ASSEMBLY (TELEPHONE ANTENNA)


    1. A003XNRE02
      Text in Illustration
      *1 Core wire
      *2 Shield
      *a

      Component without harness connected

      (Instrument Panel Integration Antenna Assembly (Telephone Antenna))

      Disconnect the instrument panel integration antenna assembly (telephone antenna) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Core wire - Shield Always 4 to 11 kΩ

    NG

    REPLACE INSTRUMENT PANEL INTEGRATION ANTENNA ASSEMBLY

    OK

  6. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  7. CHECK DTC OUTPUT


    1. Wiggle the instrument panel integration antenna assembly (telephone antenna).

    2. Check for DTCs Click here.

      OK
      DTC B1573 and B15CB is not output.

    NG

    REPLACE INSTRUMENT PANEL INTEGRATION ANTENNA ASSEMBLY Click here

    OK

    END

  8. REPLACE INSTRUMENT PANEL INTEGRATION ANTENNA ASSEMBLY


    1. Temporarily replace the instrument panel integration antenna assembly with a new or known good one.

      Tech Tips

      Refer to the Service Bulletin.


    NEXT

  9. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  10. CHECK DTC OUTPUT


    1. Check for DTCs Click here.

      OK
      DTC B1573 and B15CB is not output.

    NG

    REPLACE TELEPHONE TRANSCEIVER ASSEMBLY

    OK

    END (INSTRUMENT PANEL INTEGRATION ANTENNA ASSEMBLY WAS DEFECTIVE)