DTC B15C2: Speed Signal Malfunction [10/2014 - 10/2015]: Description
The navigation ECU sub-assembly receives a vehicle speed signal from the combination meter assembly and information from the navigation antenna assembly, and then adjusts the vehicle position.
The navigation ECU sub-assembly stores this DTC when the difference between the speed information that the navigation antenna assembly 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. The signal is changed to a pulse signal at the transistor in the combination meter assembly. Each ECU controls its respective systems based on this pulse signal.
- If a short occurs in any of the ECUs or in the wire harness connected to an ECU, all systems in the following diagram will not operate normally.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B15C2 | A difference between the GPS speed and SPD pulse is detected |
|