For 1990-2009 cars only
Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptors
DTC P0500: Vehicle Speed Sensor MalfunctionDTC P0503: Vehicle Speed Sensor "A" Intermittent/Erratic/High
Circuit Description
The cruise control system uses the same vehicle speed signal that is sent to the engine control module (ECM). If DTC P0500 is detected, perform diagnostic in engine controls section.
Conditions for Running the DTC
The cruise control is in operation.
Conditions for Setting the DTC
P0500
The vehicle speed signal from the vehicle speed sensor is cut for 0.14 second or more while cruise control is in operation.
P0503
A momentary interruption and noise are detected when a rapid change of vehicle speed occurs while cruise control is in operation.
Action Taken When the DTC Sets
Cruise control is disabled.
Conditions for Clearing the DTC
The DTC will clear when conditions for setting the DTC have been repaired.
Diagnostic Aids
Perform the diagnostic procedure for DTC P0500 in the engine controls section.
