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Ford Historic (OBD I) Diagnostics
6
2. Perform the following:
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.
7) Turn key on engine off. Do not start engine.
Avoid cooling fan! It may turn on during test.
✓The test screen indicates the time
remaining. Do not touch vehicle or
tools during this time until the next
screen appears.
3. Toggle relays and solenoids.
✓Press the accelerator pedal fully to
turn ON relays and solenoids. Do
the same to turn them off. This can
be repeated as many times as
required to locate the fault.
4. Return to On Demand Test
Menu.
•Turn the ignition key off.
•Press BACK.
!
CAUTION
Time remaining: 2:35
Output Switch Test
Precedure runs less
than 3 minutes.
Relays & soleniods
are *Off*.
Depress release
throttle fully to
turn on.
Output Switch Test