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 switch 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 9 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.

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Part 2 Of 2:

TEST PROCEDURE




TROUBLESHOOTING PROCEDURES

TROUBLESHOOTING HINTS
If there is an open or short circuit in the vehicle speed sensor signal circuit, the engine may stall when the vehicle is decelerated to a stop.