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BEFORE YOU BEGIN
•
Fix any known mechanical problems before performing
any test.
Make a thorough check before starting any test procedure.
Loose or damaged hoses, wiring or electrical connectors are
often responsible for poor engine performance, and in some
cases they may cause a "false" fault code.
Please read your vehicle's service manual for proper
connection of vacuum hoses, electrical wiring and wiring
harness connectors. Check the following areas:
a. All fluid levels - check the oil, power steering, trans-
mission (if applicable), coolant and other engine fluids.
b. Air cleaner and ducts - check for holes, rips, excessive
dirt in filter, and for disconnected ducts. You may wish to
check your owner's manual to determine when you should
change the air filter.
c. Belts - check for ripped, torn, brittle, loose or missing belts.
d. Mechanical linkage associated with sensors - Refer
to your vehicle's service manual for locations.
e. Rubber (vacuum/fuel) and steel hoses - check for leaks,
cracks, blockage or other damage; check for proper routing.
f. Spark plugs and wires - check for damaged, loose,
disconnected or missing spark plug wires.
g. Battery terminals - make sure battery terminals are
clean and tight; check for corrosion or broken connections.
Verify proper battery and charging system voltage.
h. Electrical connectors and wiring - make sure wire
insulation is in good condition and there are no exposed
wires. Make sure all cables are connected securely.
i. Verify that the engine is mechanically sound. If necessary,
perform a compression check, engine vacuum check,
timing check (if applicable), etc.
Preparing The Code Reader For Use
Installing the Battery
■ 2 - "AA" batteries are required to perform tests.
■ Batteries sold separately.
a. Remove the battery compartment cover from the back of
the Code Reader.
About the Ford Code Reader
BEFORE YOU BEGIN
17 Chapter 3
3
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