Ford OBD1 Systems
ADDITIONAL TESTS FOR EEC-IV SYSTEMS - CYLINDER BALANCE TEST
82 OBD1
5.
When prompted, turn off all vehicle
accessories, turn ignition key OFF and
wait for the on screen prompt. If you wish
to exit the Cylinder Balance test at this
time, press the
button.
6.
When instructed by the message on the
Scan Tool's display, start the engine and
press the ENTER
button.
A "One moment please preparation for
test is in progress..." message shows
temporarily on the Scan Tool's LCD
display.
7.
When prompted by the message on the
Scan Tool's display, lightly press the
accelerator pedal half way and release to
activate the cylinder balance test.
For 1986 models ONLY: Fully press
accelerator once and release.
The computer is now in Cylinder
Balance Test mode, and will start
cutting fuel to each cylinder in
sequence to determine if all the
cylinders are contributing equally. It
may take up to five minutes before
the test results are transmitted to
the Scan Tool.
8.
If the vehicle's computer fails to enter
Cylinder Balance Test mode, do the
following:
Lightly press the accelerator pedal
again as described in step 7 above.
9.
After the Cylinder Balance Test is
completed, the test results are sent to the
Scan Tool.
The computer compares the power
contribution that each cylinder makes
to engine operation.
10.
If all cylinders are contributing equally, the
computer determines that power
distribution is normal and a “System Pass”
message will display.
Summary of Contents for 31403
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