Vehicle Speed Sensor (VSS)
Disconnect VSS electrical connector. Using DVOM measure resistance across sensor terminals. Resistance should be 190-250 ohms. Replace sensor if not within specification. Faults in VSS sensor or circuit should set a service code. See Quick Test procedure in TESTS W/CODES EEC-IV article. If no service code has been set, see CIRCUIT TEST DP in TESTS W/CODES EEC-IV article for additional sensor testing and specifications.