Diagnostic Aids

WARNING: This page is about a different car, the 2002 Mercury Villager. However, it is still accessible from the selected car via links, so may be relevant.

Ensure speedometer is functioning properly before performing this test. If speedometer does not function properly, repair speedometer as necessary. See ANALOG INSTRUMENT PANELS - VILLAGER article in ACCESSORIES & EQUIPMENT. Perform this test when directed by QUICK TEST. This test is intended to diagnose the following:

Vehicle Speed Sensor (VSS).
Harness circuit; VSS.
PCM.

For DTC P0500, connect scan tool to Data Link Connector (DLC). Drive vehicle. Using scan tool, access VSS PID from PID/DATA MONITOR & RECORD menu. Ensure VSS PID reading agrees with speedometer.

Fig 1: Identifying Vehicle Speed Sensor Harness Connector Terminals

Courtesy of FORD MOTOR CO.

Fig 2: Identifying Analog Instrument Cluster Harness Connector C266a Terminals

Courtesy of FORD MOTOR CO.

Fig 3: Identifying Analog Instrument Cluster Harness Connector C266b Terminals

Courtesy of FORD MOTOR CO.

Fig 4: Identifying Electronic Instrument Cluster Harness Connector C267a Terminals

Courtesy of FORD MOTOR CO.