Dtc B15C2 Speed Signal Malfunction

Audio Visual Telematics. Land Cruiser. Urj200, 202 Grj200 Vdj200
Navigation Multi Info Display. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CLEAR DTC

CHECK DTC

CHECK VEHICLE SENSOR (OPERATION CHECK)

DTC 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*1 or telephone antenna assembly*2 receives and the SPD pulse received from the combination meter assembly becomes large.
  1. *1: w/o Roof Antenna
  2. *2: w/ Roof Antenna
HINT:
  1. 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.
  2. 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
  1. Meter / gauge system
  2. Multi-media module receiver assembly

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Navigation Multi Info Display.Navigation System. Dtc B15C2 Speed Signal Malfunction


INSPECTION 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
Go to step 3
OK

USE SIMULATION METHOD TO CHECK (Click here)

3.CHECK VEHICLE SENSOR (OPERATION CHECK)


    Land Cruiser. Urj200, 202 Grj200 Vdj200

  1. Enter the "Vehicle Sensors" screen. Refer to Check GPS & Vehicle Sensor in Operation Check (Click here).

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

    HINT:
    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 intelligent tester (Click here).


NG
GO TO METER / GAUGE SYSTEM (Click here)
OK

REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY (Click here)