TELEMATICS SYSTEM(for ERA-GLONASS), Diagnostic DTC:B1573, B15CB

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

DESCRIPTION

These DTCs are stored when a malfunction occurs in the telephone antenna assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area
B1573 Short in Telephone Antenna Circuit

Telephone antenna assembly impedance (Ω) is lower than the malfunction threshold for 20 seconds when the ignition switch is ON.

(Short circuit)

  • Telematics transceiver

  • No. 1 amplifier antenna assembly

  • No. 3 antenna cord sub-assembly

  • No. 2 antenna cord sub-assembly

  • Antenna cord sub-assembly
B15CB Telephone Antenna Disconnected

Telephone antenna assembly impedance (Ω) is higher than the malfunction threshold for 20 seconds when the ignition switch is ON.

(Open circuit)

  • Telematics transceiver

  • No. 1 amplifier antenna assembly

  • No. 3 antenna cord sub-assembly

  • No. 2 antenna cord sub-assembly

  • Antenna cord sub-assembly

WIRING DIAGRAM

B003KX2E04

CAUTION / NOTICE / HINT

Note

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Registration for Telematics System.

Click here

PROCEDURE


  1. CHECK DTC


    1. Turn the ignition switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON and wait for 20 seconds.

    4. Turn the GTS on.

    5. Check for DTCs and check that no DTCs are output.

      Click here


      Body Electrical > Telematics > Trouble Codes
      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  2. INSPECT NO. 1 AMPLIFIER ANTENNA ASSEMBLY


    1. Remove the No. 1 amplifier antenna assembly.

      Click here

    2. B003NWOC25
      *a

      Component without harness connected

      (No. 1 Amplifier Antenna Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      4 - 4a Always 4 to 11 kΩ
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE NO. 1 AMPLIFIER ANTENNA ASSEMBLY Click here

    OK

  3. INSPECT NO. 3 ANTENNA CORD SUB-ASSEMBLY


    1. B003NMCC01
      *a

      Front view of wire harness connector

      (to No. 1 Amplifier Antenna Assembly)
      *b

      Front view of wire harness connector

      (to No. 2 Antenna Cord Sub-assembly)

      Disconnect the antenna connector from the No. 1 amplifier antenna assembly.

    2. Disconnect the antenna connector from the No. 2 antenna cord sub-assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-4 - B-1 Always Below 1 Ω
      A-4a - B-1a Always Below 1 Ω
      A-4 or B-1 - Body ground Always 10 kΩ or higher
      A-4a or B-1a - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE NO. 3 ANTENNA CORD SUB-ASSEMBLY Click here

    OK

  4. INSPECT NO. 2 ANTENNA CORD SUB-ASSEMBLY


    1. B003J9VC01
      *a

      Front view of wire harness connector

      (to No. 3 Antenna Cord Sub-assembly)
      *b

      Front view of wire harness connector

      (to Antenna Cord Sub-assembly)

      Disconnect the antenna connector from the No. 3 antenna cord sub-assembly.

    2. Disconnect the antenna connector from the antenna cord sub-assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C-1 - D-6 Always Below 1 Ω
      C-1a - D-6a Always Below 1 Ω
      C-1 or D-6 - Body ground Always 10 kΩ or higher
      C-1a or D-6a - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY Click here

    OK

  5. INSPECT ANTENNA CORD SUB-ASSEMBLY


    1. Disconnect the antenna connector from the No. 2 antenna cord sub-assembly.

    2. Disconnect the antenna connector from the telematics transceiver.

    3. B003QT1C04
      *a

      Front view of wire harness connector

      (to No. 2 Antenna Cord Sub-assembly)
      *b

      Front view of wire harness connector

      (to Telematics Transceiver)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E-6 - F-1 (ANT1) Always Below 1 Ω
      E-6a - F-1a (ANT1G) Always Below 1 Ω
      E-6 or F-1 (ANT1) - Body ground Always 10 kΩ or higher
      E-6a or F-1a (ANT1G) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE ANTENNA CORD SUB-ASSEMBLY Click here

    OK

  6. REPLACE TELEMATICS TRANSCEIVER


    1. Replace the telematics transceiver with a new one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM REGISTRATION Click here