TELEMATICS SYSTEM, Diagnostic DTC:B1572

DTC Code DTC Name
B1572 Microphone Error

DESCRIPTION

This DTC is stored when a microphone signal line is disconnected.

DTC No. DTC Detection Condition Trouble Area
B1572 Current at terminal MCVD exceeds the malfunction threshold for 20 seconds while the ignition switch is ON.

  • Telematics transceiver

  • Roof console box assembly (telephone microphone assembly)

  • Wire harness or connector

WIRING DIAGRAM

B000MMYE03

INSPECTION PROCEDURE

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.

      OK
      No DTCs are output.

    NG

    INSPECT TELEMATICS TRANSCEIVER Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

  2. INSPECT TELEMATICS TRANSCEIVER


    1. B000MQJE01
      Text in Illustration
      *a

      Component with harness connected

      (Telematics Transceiver)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      33 (MCVD) - Body ground Ignition switch ACC 4 to 6 V
      Standard Resistance
      Tester Connection Condition Specified Condition
      35 (MCI-) - Body ground Always Below 1 Ω

    NG

    REPLACE TELEMATICS TRANSCEIVER Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEVIER - ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY))


    1. Disconnect the I218 telematics transceiver connector.

    2. Disconnect the S7 roof console box assembly (telephone microphone assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I218-33 (MCVD) - S7-14 (MACC) Always Below 1 Ω
      I218-34 (MCI+) - S7-13 (MCO+) Always Below 1 Ω
      I218-35 (MCI-) - S7-12 (MCO-) Always Below 1 Ω
      I218-33 (MCVD) or S7-14 (MACC) - Body ground Always 10 kΩ or higher
      I218-34 (MCI+) or S7-13 (MCO+) - Body ground Always 10 kΩ or higher
      I218-35 (MCI-) or S7-12 (MCO-) - Body ground Always 10 kΩ or higher
      I218-32 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)


    1. B000H6GE58
      Text in Illustration
      *a

      Component without harness connected

      (Roof Console Box Assembly (Telephone Microphone Assembly))

      Remove the roof console box assembly (telephone microphone assembly) Click here.

      Standard Resistance
      Tester Connection Condition Specified Condition
      14 (MACC) - 12 (MCO-) Always Below 1 Ω

    NG

    REPLACE ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY) Click here

    OK

  5. REPLACE TELEMATICS TRANSCEIVER


    1. Replace the telematics transceiver with a new one Click here.


    NEXT

    PERFORM REGISTRATION Click here