Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Diagnostic Trouble Code Description:
Vehicle Speed Sensor Circuit Intermittent
Possible Sensor Faults
ECM
Possible Related Diagnostic Trouble Codes
DTC P0502 or P0503
Circuit / System Description
The vehicle speed information is provided to the engine control module?(ECM) by the vehicle speed sensor?(VSS). The VSS is a permanent magnet generator that is mounted to the transmission and produces a pulsing voltage. The AC voltage amplitude and frequency increases with vehicle speed. The ECM converts the pulsing voltage into km/h (mph). The ECM supplies the VSS signal to the following components:
The instrument panel for speedometer and odometer operation
