P0501

P0501

DESCRIPTION
The vehicle speed sensor is a reed switch that is built into the speedometer. The sensor converts the transaxle gear revolutions into a pulse signal which is sent to the ECM.

FAILURE CONDITIONS
The ECM will set a code and the Malfunction Indicator Lamp (MIL) will turn on if there is no vehicle speed sensor output signal for 20 seconds during two driving cycles when the following conditions are met:

1. Engine speed is greater than 2200 RPM.
2. Engine load is greater than 3.0 millisecond.

This code indicates no speed signal being read by vehicle speed sensor or ECM.

Circuit Diagram:

Test Procedure Part 1:

Test Procedure Part 2: