Actron 9640 Quick Tests 7.3L Powerstroke Diesel Only, Koeo Inj. Buzz, Inj Buzz, Output State~

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.

Output State Option

`1)All Off

2)All But Fans/Inj [ 3)Low Speed Fan ~

All But Fans/Inj ? State: ON

<Change> Quit ~

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	Quick	Tests		?
	Tests screen, press ENTER.
		KOEO	On	Demand	]
	Perform the following:	` KOEO	Inj.	Buzz	[
		KOEO	Output State~

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.

Test In Progress Approximate

Time Left 3:00 Press BACK to Quit ~

Press the FUNC key to return to the

Ford Function List or BACK to return to the Quick Tests screen.

6 – 28 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •