B15C2

NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: B15C2: Speed Signal Malfunction
B15C2 - Speed Signal Malfunction

DESCRIPTION

The navigation receiver assembly receives a vehicle speed signal from the combination meter assembly and information about the navigation antenna, and then adjusts the vehicle position.

The navigation receiver assembly stores this DTC when the difference between the speed information that the navigation antenna receives and the SPD pulse received from the combination meter assembly becomes large.

HINT
* A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter assembly. This signal is changed to a pulse signal at the transistor in the combination meter assembly. Each ECU controls its respective systems based on the pulse signal.
* If a short occurs in any of the ECUs or in a wire harness connected to an ECU, all systems related to the components in the diagram below will not operate normally.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK VEHICLE SENSOR (OPERATION CHECK)

(a) Enter "GPS & Vehicle Sensor" (Vehicle Sensors) Operation Check.





(b) While driving the vehicle, compare the "SPD" indicator to the reading on the speedometer. Check if these readings are equal or almost equal.

OK:

The readings are equal or almost equal.

NG -- GO TO METER / GAUGE SYSTEM How To Proceed With Troubleshooting

OK -- REPLACE NAVIGATION RECEIVER ASSEMBLY Removal