AUDIO AND VISUAL SYSTEM, Diagnostic DTC:B15C2

DTC Code DTC Name
B15C2 Speed Signal Malfunction

DESCRIPTION

The multi-media module receiver assembly receives a vehicle speed signal from the combination meter assembly and information from the navigation antenna, and then adjusts the vehicle position on the map. The multi-media module receiver assembly stores this DTC when the difference between the speed information that the navigation antenna assembly receives and the SPD pulse received from the combination meter assembly becomes large.

Tech Tips


  • A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter assembly. The signal is changed to a pulse signal at the transistor in the combination meter assembly. Each ECU controls the respective systems based on the pulse signal.

  • If a short occurs in any of the ECUs or in the wire harness connected to an ECU, all systems in the diagram below will not operate normally.

DTC Code DTC Detection Condition Trouble Area
B15C2 A difference between the GPS speed and SPD pulse is detected

  • Combination meter assembly

  • Multi-media module receiver assembly

  • Harness or connector

WIRING DIAGRAM

A01FQAAE37

INSPECTION PROCEDURE

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  2. CHECK DTC


    1. Recheck for DTCs and check if the same DTC is output again Click here.

      OK
      No DTCs are output.

    NG

    CHECK VEHICLE SENSOR (OPERATION CHECK) Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

  3. CHECK VEHICLE SENSOR (OPERATION CHECK)


    1. A01FV3YE01
      Text in Illustration
      *a Example

      Enter the "Vehicle Sensors" screen. Refer to Check Sensor Check*1 or GPS & Vehicle Sensor*2 in Operation Check Click here.


      • *1: for Korea

      • *2: except Korea

    2. While driving the vehicle, compare the "Speed" indicator to the reading on the speedometer. Check if these readings are almost equal.

      Tech Tips

      The combination meter assembly receives the vehicle speed signal from the skid control ECU via CAN communication. Therefore, perform the following inspection referring to values on the Data List of the skid control ECU because it is the source of the vehicle speed signal.

      OK
      Vehicle speed displayed on the "Vehicle Sensors" screen is almost the same as the actual vehicle speed measured using the GTS (See page Click here).

    NG

    GO TO METER / GAUGE SYSTEM Click here

    OK

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here