Actron 9640 User Manual page 108

Ford Enhanced (OBD II) Diagnostics
The Output State Options are
displayed. The fourth option is "High
Speed Fan." Select an option and press
ENTER.
Listen for devices turn on and off.
After a brief Command Sent screen, an
Output State screen is displayed for the
duration of the test. Select CHANGE to
toggle the state to On/Off or QUIT to
return to the Quick Tests screen.
Quick Tests (7.3L Powerstroke Diesel Only)
These additional Quick Tests are available when testing a truck equipped with
a 7.3L Powerstroke Diesel engine.
KOEO Inj. Buzz
The KOEO Inj. Buzz is a functional test performed on demand with the ignition
key ON and Engine OFF. The test determines if the injector circuits and
solenoids are operating electrically correct and without faults.
All injectors are buzzed initially (audible feedback of solenoids energizing the
valves) for approximately 2 seconds. Then each injector will buzz individually
6
for approximately 1 second, in numerical order (1 – 8).
Select KOEO Inj. Buzz from the Quick
Tests screen, press ENTER.
Perform the following:
1) Set Parking Brake.
2) Transmission In Park Or Neutral.
3) Turn A/C Off.
4) Start Engine — Let Idle Until Hot.
5) Turn Ign Key Off.
6) Wait 10 Seconds. Turn Key On-Engine Off. (Do Not Start).
Press ENTER to start the test. Listen for
one long buzz and then 8 short equal
buzzes as each fuel injector is
energized.
Press the FUNC key to return to the
Ford Function List or BACK to return to the Quick Tests screen.
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Output State Option
` 1)All Off
2)All But Fans/Inj [
3)Low Speed Fan
All But Fans/Inj ?
State: ON
<Change>
Quick Tests
KOEO On Demand
` KOEO Inj. Buzz
KOEO Output State ~
Test In Progress
Approximate
Time Left
Press BACK to Quit ~
~
Quit ~
?
]
[
3:00