Ford Historic (OBD I) Diagnostics
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6
✓Perform the “Read KOEO Codes” on page 6-7 to retrieve the
DTC(s) set during wiggle test.
✓After making all repairs, perform “Erase Codes” on page 6-13 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. Record all measurments for reference.
✓Fuel injectors are NOT energized during this test.
✓On vehicles equipped with Integrated vehicle speed control
(IVSC), failure to disconnect the vacuum supply hose from the
speed control servo energizes the speed control solenoids.
From the On Demand Test Menu:
1. Select Output Sw Test.
•Use the
UP
or
DOWN
arrow
keys until Output Sw Test is
highlighted.
•Press
ENTER.
Wiggle Test
Output Sw Test
Cyl Balance Test
STAR Test Mode
Review Data
Print Data
Tool Setup
On Demand Test Menu
Output Sw Test