Equus 3145 - Digital Ford Code Reader (1981 - 1995) - Manual (Page 29)

Retrieving Codes
KOEO TEST PROCEDURES (EEC-IV SYSTEMS)
Chapter 4 26
3. With Code Reader off, connect to the vehicle's test
connectors (see page 18 for test connector location).
■ Both the large and small connectors must be
connected.
4. If your vehicle is equipped with one of the following
configurations, perform the added procedures as described
below.
■ For 4.9L engines with standard transmission: press
and hold the clutch until all Codes are sent (Steps 4 to
10).
■ For 7.3L diesel engines: press and hold accelerator
until all codes are sent (Step 4 to 10).
■ For 2.3L turbo engines with octane switch: put switch
in premium position.
NOTE: Do not press throttle or brake, or move steering
wheel, during this test unless instructed.
5. Turn ignition on. DO NOT START THE ENGINE.
WARNING: Keep away from any potentially moving parts.
6. Press and release the ON/OFF
button to turn the Code Reader
"ON".
■ Three zeros should be
visible on the Code Reader
display at this time.
7. Press and release the
TEST/HOLD button to put the
Code Reader in Test Mode.
■ When the code reader is put in test mode it signals
the vehicle's computer to start performing the Self-
Test. The display will show a "Triangle" icon on the
lower right hand corner of the display to indicate that
the Code Reader is linked to the vehicle's computer
and is in test mode.
NOTE: As soon as the TEST/HOLD button is pressed
the vehicle's computer enters the Self Test mode.
Clicking sounds will be heard coming from the engine.
This is normal. It indicates that the vehicle's computer
is activating relays, solenoids, and other components
to check their operation.
4