Ford Historic (OBD I) Diagnostics
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6
✓Follow the instructions step-by-step.
1) Set parking brake.
2) Transmission in park (P) or neutral (N).
3) Turn A/C off.
4) Start engine and let idle until hot.
5) Turn ignition key off.
6) Wait 10 seconds. Turn key on-engine off. Do not start engine.
Avoid cooling fan! It may turn on during test.
✓While waiting for the codes to
transmit, the PCM cycles the
following system components on
and off:
• Electric radiator cooling fan
•Fuel pump
• Check engine light or malfunction
indicator light (MIL) – Slow Codes
only.
• Idle speed control solenoid
3. When the test is complete.
•Turn ignition key off.
•Press
ENTER.
✓If no problems exist, Code 11 or
111 will be displayed.
!
CAUTION
Procedure runs less
than 3 minutes.
Working
Time Remaining: 2:35
Turn ignition
key off.
Press ENTER to cont.
Test Completed
1 of 1
ENG
Systen Pass Code.
No faults detected
during KOEO test.
KOEO
111