Actron 9640A manual Ford Historic SELF-TEST Routines, Read Koeo Codes

Section 6 – Ford Diagnostics

FORD HISTORIC SELF-TEST ROUTINES

Due to different processor calibrations, the Ford Function List for a particular vehicle may or may not appear as shown. Based on the vehicle information entered at the Vehicle Setup menu, the tool automatically recognizes the com- puter system installed.

If the function is not supported by the vehicle, than the scan tool does not display it.

✓Ford vehicles manufactured from 2000 to present automatically use Global OBD II Diagnostics.

✓Most Ford vehicles prior to 1996 use the EEC-IV system. Vehicles with Mazda-sourced engines use the Mazda Electronic Control System (MECS). Refer to “Appendix A - Data Link Connectors".

✓If the Scan Tool displays anErrorMessage, make sure the adapter cable

is securely attached and the ignition key is ON. Cycle the ignition key to OFF for 10 seconds, then ON. This may be required because the Ford system allows only one Self-Test function to be performed for each Key ON. Attempt the test selected again and if the problem remains, refer to “Error Messages” on page 8-2.

Manual Info

TheManualInfo function instructs the user what section of the manual to use. This section covers Ford Historic Self-Test Routines

Read KOEO Codes

TheReadKOEOCodes function activates the KOEO (Key On Engine Off) and 6 Continuous Memory self-tests which retrieves KOEO and Continuous Memory DTCs from the PCM.

•KOEODTCs are transmitted through the PCM data link when a trouble con- dition is active. KOEO codes remain until the trouble condition becomes inactive – usually when the fault is repaired.

•Continuous Memory DTCs are stored in vehicle’s memory at the time of occurrence during continuous self-test monitoring. They will remain there until the problem does not reoccur within 40 warm-up cycles, Fast KOEO codes have been read, or the Erase Codes function has been run. Contin- uous memory codes follow the KOEO codes in the data stream.

The DTCs are transmitted in two formats; both transmit the same information:

•Slow Codes are regular service codes that allow the user to identify the faults with an analog voltmeter or the check engine light. Slow codes are transmitted within 3 minutes.

•Fast Codes are transmitted within seconds and must be read with a diag- nostic tool. Retrieving Fast Codes erases Continuous Memory Codes, Slow Codes does not. Fast Codes do not apply to MECS vehicles.

Select Read KOEO Codes from the
Ford Function List and press	.

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