TELEMATICS SYSTEM, Diagnostic DTC:B1573 and 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.

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

  • Harness or connector

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

  • Harness or connector

WIRING DIAGRAM

E355983E01

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. E271865C14

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

    2. Disconnect the antenna connector from the wire harness.

    3. E350951C11

      *a

      Front view of wire harness connector

      (to No. 1 Amplifier Antenna Assembly)

      *b

      Front view of wire harness connector

      (to Wire Harness)

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      A-4 - 2

      Always

      Below 1 Ω

      A-4a - 2a

      Always

      Below 1 Ω

      A-4 or 2 - Body ground

      Always

      10 kΩ or higher

      A-4a or 2a - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE NO. 3 ANTENNA CORD SUB-ASSEMBLY

    Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (NO. 3 ANTENNA CORD SUB-ASSEMBLY - TELEMATICS TRANSCEIVER)

    1. E350974C01

      *a

      Front view of wire harness connector

      (to No. 3 Antenna Cord Sub-assembly)

      *b

      Front view of wire harness connector

      (to Telematics Transceiver)

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

    2. Disconnect the antenna connector from the telematics transceiver.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      M44-2 - M42-1 (ANT1)

      Always

      Below 1 Ω

      M44-2a - M42-1a

      Always

      Below 1 Ω

      M44-2 or M42-1 (ANT1) - Body ground

      Always

      10 kΩ or higher

      M44-2a or M42-1a - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. REPLACE TELEMATICS TRANSCEIVER

    1. Replace the telematics transceiver with a new one.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    PERFORM REGISTRATION

    Click here