Actron 9640A manual Do not over-rev engine. Observe all saf ty precautions

Ford Enhanced (OBD II) Diagnostics

When the vehicle has finished the test,

the DTCs found display on the screen.

DTCs

Found:

2

If no codes are read, the System Pass

screen is displayed.

Write

DownCodes

Use

arrow keys to view

For

Reference.

~

SelectUP/DOWNKOER Cyl. Cont. from the

Codes.

Press the

key to return to the Ford

unc ion List or BACKto return to

FUNC

the Quick Tests screen.

KOER Cyl. Cont.

TheKOERCyl.Cont. is an on-demand test pe form

d with the

ngine running,

the A/C OFF and engine oil temperature above 76.6C (170°F). This test deter-

mines that all cylinders are contributing equally to engine performance.

The PCM first tests the cylinders in numeric

d

(1 – 8) for a bad/weak cyl-

inder. If all cylinders check good, a 4 cylinder te t is th

xe

uted (if a weak

cylinder is detected in the 8 cylinder test, the four cylinder test will not be

started).

During the test, the engine will emit smoke, and he

PM varies with

ach check

(there is no audible difference in RPM if a bad/w

ak cyli

det

cted).

Exhaust gases are harmful or FATAL. Always operate

vehicle in a well-ventilated a ea.

The KOER cylinder contribution t st is

one ith the

engine running. Set the pa king brake and place the

transmission in DRIVE (AutomaticUse[ToViewransm ssionsDTCsonly).

Do not over-rev engine. Observe all saf ty precautions.

Quick Tests screen.

6

sition from one state to another (i.e. - cycleQuickON/OFF)Tests. Up n ini iating the

est,

Perform the following:

GlowPlug

]

1) Set Parking Brake.

• • • • • • • • • •UP/DOWN• • • • • • • • • • • • • • • • • • • • • • • • • •PressBACKtoQuitTApproximate•imeLeft4:00estIn• • • • • • •Switch• •Progress• • • • • • • • • • 6 – 25

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 d splay

he screen.

Use

arrow keys to view

Codes.

If no Codes are read, the System Pass

screen is displayed.

Press the

key to return to the

FUNC

BACK

Ford Function List or

to return

to the Quick Tests screen.

KOER Switch

The KOER Switch is a functional test perform

d On-Demand with he engine

running. The test is designed to set DTCs if one

more

itches fail to

ran-

wait 5 seconds before beginning the driver-op

ated con rols. This elim nates

the possibility of setting false DTCs with the`KOERcrui e/speedCyl.nContl switches.

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