P1700

DTC P1700 Speed Sensor No.2 Circuit Malfunction (No.2 Vehicle Speed Sensor)





CIRCUIT DESCRIPTION
The No.2 vehicle speed sensor detects the rotation speed of the transmission output shaft and sends signals to the ECM. The ECM determines the vehicle speed based on these signals.
An AC voltage is generated in the No.2 vehicle speed sensor coil as the rotor mounted on the output shaft rotates, and this voltage is sent to the ECM.
The gear shift point and lock-up timing are controlled by the ECM based on the signals from this vehicle speed sensor and the throttle position sensor signal.
If the No.2 vehicle speed sensor malfunctions, the ECM uses input signals from the No.1 vehicle speed sensor as a back-up signal.





DETECTING CONDITION





HINT: Refer to the chart for the wave from between terminals SP2+ and SP2- when vehicle speed is approx. 60 km/h (37 mph).





WIRING DIAGRAM

Step 1:

Step 2:

INSPECTION PROCEDURE