AUDIO AND VISUAL SYSTEM (for Radio and Display Type without Intuitive Parking Assist System), Diagnostic DTC:B1532

DTC Code DTC Name
B1532 LVDS Signal Malfunction (from Extension Module)

DESCRIPTION

The stereo component tuner assembly and the radio and display receiver assembly are connected by an LVDS communication line.

This DTC is stored when an LVDS communication error occurs between the stereo component tuner assembly and the radio and display receiver assembly.

DTC No. DTC Detection Condition Trouble Area
B1532

When one of the conditions below is met:


  • Video signal (digital) is lost.

  • Stereo component tuner assembly is/was not connected while the ignition switch is/was ACC or ON.

  • Communication between the radio and display receiver assembly and stereo component tuner assembly is/was not possible when the engine is/was started.

  • Stereo component tuner assembly power source circuit

  • LVDS circuit between radio and display receiver assembly and stereo component tuner assembly

  • Stereo component tuner assembly

  • Radio and display receiver assembly

  • Navigation wire

Tech Tips

Even if no malfunction is present, this DTC may be stored depending on the battery condition or engine start voltage.

WIRING DIAGRAM

A01HOFZE01

INSPECTION PROCEDURE

Note

After replacing the stereo component tuner assembly of vehicles subscribed to pay-type satellite radio broadcasts, XM radio ID registration is necessary.

PROCEDURE


  1. CHECK NAVIGATION WIRE (STEREO COMPONENT TUNER ASSEMBLY POWER SOURCE)


    1. Disconnect the a2 stereo component tuner assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      a2-8 (GND2) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      a2-4 (+B2) - a2-8 (GND2) Always 11 to 14 V
      a2-3 (ACC2) - a2-8 (GND2) Ignition switch ACC 11 to 14 V

    NG

    CHECK NAVIGATION WIRE Click here

    OK

  2. REPLACE NAVIGATION WIRE


    1. Replace the navigation wire with a new or known good one Click here.

    2. Clear the DTCs Click here.

    3. Recheck for DTCs and check that no DTCs are output.

      OK
      No DTCs are output.

    NG

    REPLACE STEREO COMPONENT TUNER ASSEMBLY Click here

    OK

    END

  3. REPLACE STEREO COMPONENT TUNER ASSEMBLY


    1. Replace the stereo component tuner assembly with a new or known good one Click here.

    2. Clear the DTCs Click here.

    3. Recheck for DTCs and check that no DTCs are output.

      OK
      No DTCs are output.

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

    END

  4. CHECK NAVIGATION WIRE


    1. Disconnect the a3 radio and display receiver assembly connector.

    2. Disconnect the a2 stereo component tuner assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      a3-4 (+B2) - a2-4 (+B2) Always Below 1 Ω
      a3-3 (ACC2) - a2-3 (ACC2) Always Below 1 Ω
      a3-8 (GND2) - a2-8 (GND2) Always Below 1 Ω
      a3-4 (+B2) - Body ground Always 10 kΩ or higher
      a3-3 (ACC2) - Body ground Always 10 kΩ or higher
      a3-8 (GND2) - Body ground Always 10 kΩ or higher

    NG

    REPLACE NAVIGATION WIRE Click here

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here