Actron 9640 - Manual (Page 110)

Ford Enhanced (OBD II) Diagnostics
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During the test, the engine will emit smoke, and the RPM varies with each check
(there is no audible difference in RPM if a bad/weak cylinder is detected).
Exhaust gases are harmful or FATAL. Always operate
vehicle in a well-ventilated area.
The KOER cylinder contribution test is done with the
engine running. Set the parking brake and place the
transmission in DRIVE (Automatic Transmissions only).
Do not over-rev engine. Observe all safety precautions.
Select KOER Cyl. Cont. from the Quick
Tests screen.
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. Start Engine — Let Idle.
When the vehicle has finished the test, the DTCs found display on the screen.
Use UP/DOWN arrow keys to view
Codes.
If no Codes are read, the System Pass
screen is displayed.
Press the FUNC key to return to the Ford Function List or BACK to return to
the Quick Tests screen.
KOER Switch
The KOER Switch is a functional test performed On-Demand with the engine
running. The test is designed to set DTCs if one or more switches fail to
transition from one state to another (i.e. - cycle ON/OFF). Upon initiating the
test, wait 5 seconds before beginning the driver-operated controls. This
eliminates the possibility of setting false DTCs with the cruise/speed control
switches.
Quick Tests ?
KOER On Demand ]
KOER Glow Plug
` Cyl. Cont. ~
Test In Progress
Approximate
Time Left 4:00
Press BACK to Quit ~