Ford Historic Self-Test Routines

 

After pressing

to continue, the scan tool prompts the PCM for the Cyl-

ENTER

 

inder ID. The PCM has 15 seconds to respond. If no ID was received, the tool

prompts the user to try again.

Once the ID is received, a Read KOER Self-Test begin. Follow all user prompts:

Work Steering Wheel

Pump Brake Pedal & Cycle OD (overdrive) Cancel Switch. Observe Screen for Prompt to Perform the next action.

Quickly Press And Release Throttle. One Time Only!

If no DTC is present, continue with the paragraph following the note below. If any DTC(s) are present, the Cyl Bal- anceTest stops and the tool displays the

 

screen to the right.

 

 

 

 

 

 

 

 

 

 

Select YES to review the DTC(s), then turn engine off. Record them and make

 

repairs before repeating the Cyl Balance Test.

 

 

 

 

 

 

 

 

In the next step, Do Not touch any vehi-

 

 

 

 

 

 

 

 

 

cle or tool keys while the test is running.

 

 

 

 

 

 

 

 

 

Allow engine to idle. Engine speed may

 

 

 

 

 

 

 

 

 

drop or become uneven — this is normal.

 

 

 

 

 

 

 

 

 

With no DTCs present, the tool prompts

 

 

 

 

 

 

 

 

 

the user to depress the Throttle Halfway

 

 

 

 

 

 

 

 

 

and release within the next 1.5 minutes.

 

 

 

 

 

 

 

 

6

Press

to continue. Do not move

 

 

 

 

 

 

 

 

the throttle.

 

 

 

 

 

 

 

 

 

 

If the throttle was moved, the tool displays an or m

 

ge indic ting hat the

 

test failed due to throttle movement. It prompts the us

 

to

 

te

he vehicle or

 

return to the Ford Function List.

CorectAllFaults

 

 

 

 

 

Rerun

 

Test

 

ab rt even

 

 

Noise from the Throttle Position Sensor may cau

 

the

 

 

 

 

though the throttle was not moved.

ViewFault

 

Codes?

 

 

If the engine operates properly, the

<YES>

 

st.

NO~

 

screen to the right displays. Press

ning

 

 

 

 

 

to continue.

 

 

 

 

 

If a problem exists with one or more cyl-

DontMov

 

 

Min.

 

 

inders, the tool displays a list of failed cyl-

st

Under

 

~

 

inder(s). Press

to continue.

Time

 

 

 

Refer to the applicable vehicle service

Fuly

Depress

And.

 

 

manual for cylinder numbering

 

 

sequence. Cylinder failure may be

 

ENTERcausedENTERby faultyENTERinjectors, sparks plugs, orCode90:Cylinders:BlanceestPassedStage1CompletedFiled1ROnceInNext1Presswiringelease. Remaining=4:45ENENTERTERhroThrottleTo.Cont.Min..~~.

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Page 70
Image 70
Actron 9640A manual Return to the Ford Function List