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Ford OBD1 Systems
CODE RETRIEVAL PROCEDURES – KOEO TEST
33
1. Locate the vehicle's Data Link Connector (DLC).
Some DLCs have a plastic cover that must be removed before
connecting the Scan Tool.
2. Connect the Scan Tool (with the Ford
Connector Cable Adaptor attached) to
the vehicle's DLC. Connect the Scan
Tool to BOTH connectors. Press
POWER/LINK
to turn the Scan
Tool ON, then press ENTER
to
continue.
The Ford Menu displays.
3. Highlight KOEO Test, then press ENTER
.
The LCD display shows instructions to prepare the vehicle for
the KOEO Test.
4. Start and warm the engine to normal operating temperature. Press
ENTER
to continue.
5. Turn ignition key OFF and wait for the on screen prompt. If you wish
to exit the KOEO test at this time, press SYSTEM MENU
.
6. Turn the ignition ON. DO NOT start the engine. If your vehicle is
equipped with one of the following engine types, perform the added
procedures described below:
For 4.9L engines with standard transmission: Press and hold
the clutch until all codes are sent (steps 7 through 9).
For 7.3L diesel engines: Press and hold accelerator until all
codes are sent (steps 7 through 9).
For 2L turbo engines with octane switch: Put switch in
premium position.
7. Press ENTER
to continue.
8. A “One moment please KOEO test is in progress…” message
shows while codes are being retrieved.
When the ignition is turned "on", the vehicle's computer enters
the Self-Test mode. Clicking sounds will be heard. This
indicates the vehicle's computer is activating relays, solenoids,
and other components to check their operation.
WARNING: On some vehicles equipped with an Electric
Cooling Fan, the computer activates the cooling fan to check
its operation. To avoid injury, keep hands or any part of your
body a safe distance from the engine during this test.
If the Scan Tool fails to link to the vehicle's computer, a "Vehicle is
not responding" message shows.
- Verify the ignition is ON.
- Check the cable connections at the Scan Tool and at the
vehicle's DLC.
- Turn the ignition OFF, wait 10 seconds, then turn back ON to
reset the computer.
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