User Manual

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• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Ford Historic Diagnostics
5
4) Turn Ign Key Off. Wait 10 Seconds.
5) KOEO: Turn Key On. Engine Off. Do Not Start Engine
.
6) KOER: Turn Key On. Engine On and let Idle.
Instructions are available for viewing. The
default is YES. If NO is selected, the test
will begin to initialize.
If YES is selected, the following instructions will appear.
❒ Gently tap and shake the sensor.
❒ Wiggle the sensor connectors.
❒ Twist and shake the wiring between the sensor and the PCM.
Press (17(5 to continue. The next instruction states: Beeper sounds and
message displayed while fault exists. Press
(17(5 to Test and the test will begin
to initialize.
After the 10-second initialization period,
the tool is ready for the Wiggle Test.
Locate the suspect sensor or circuit
according to the above instructions.
If a fault is detected, the tool will beep and
display a FAULT PRESENT message. A
DTC(s) will be stored in the PCM and in the
tool. When done, press
%$&. to return to
the Ford Function List.
Perform the “Read KOEO Codes” on page 5-1 to retrieve the DTC(s) set during
wiggle test. After making all repairs, perform “Erase Codes” on page 5-7 to clear
the memory.
OUTPUT SWITCH TEST (EEC-IV VEHICLES)
The Output Sw (Switch) Test, also known as the Output State Check, is used to
check the operation of the computer-controlled relays and solenoids on EEC-IV
vehicles. The user can troubleshoot circuits using a voltmeter to measure voltage
at the relays and solenoids in both energized and non-energized conditions. All
measurements should be recorded for reference.
✓ Fuel injectors are NOT energized during this test.
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