1993 Mercury Sable How to Retrieve a Code

The 1993 Mercury Sable was equipped from the factory with the fourth version of Ford's Electronic Engine Control (EEC-4) computer control system. Unlike the earlier EEC-3 system, the EEC-4 system featured an on-board computer diagnostic and data stream that could be accessed with the use of an automotive scan tool. Inexpensive scan tools and code readers are available at most auto parts stores, and the average do-it-yourself mechanic can retrieve codes from the Sable in just a few minutes. Other People Are Reading How to Check Fault Codes on a Mercury Sable How to Troubleshoot a Mercury Sable Things You'll Need Automotive scan tool Show More Instructions 1
Locate the EEC-4 diagnostic connector under the hood. In the 1993 Sable this is on the passenger's side of the engine compartment between the strut tower and the firewall. The EEC-4 connector is a two-part connector that is snapped into a dust cover marked with the word "Diagnostic" on top.
2 Plug the Ford adapter of the scan tool into both parts of the diagnostic connector. Turn the ignition key to the "Run" position. Run the self diagnostics by selecting "Self-Test" from the main menu displayed on the scan tool's screen then selecting "KOEO." Turn the ignition key on and off three times within five seconds to start the Key-On-Engine-Off (KOEO) program. The program may take a few minutes to complete.
3 Read the stored codes after the on-board computer completes the KOEO program by selecting "Read Codes" from the main menu then selecting "KOEO Codes" on the next menu. Write the codes and their descriptions down and consult a service manual for your 1993 Sable for instructions on how to perform the necessary diagnostic procedures for each code.