Filter
Top Products
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 6 – 21
Ford Enhanced (OBD II) Diagnostics
6
Quick Tests
The Quick Tests checks the integrity and performance of the EEC-V and PTEC
system. It is performed first in most diagnostic procedures and after servicing
to verify the repair.
Three Quick Tests are performed on all Ford vehicles.
❒ KOEO On Demand: Key On-Engine Off (KOEO) Self-Test.
❒ KOER On Demand: Key On-Engine Running (KOER) Self-Test.
❒ KOEO Output State.
Additional Quick Tests for OBD II 7.3L Powerstroke Diesel vehicles.
❒ KOEO Injector Buzz Test
❒ KOER Glow Plug Test
❒ KOER Cylinder Contribution Test
❒ KOER Switch Test.
Select Quick Test from the
Ford Func-
tion List
and press .
The list of available tests are displayed.
If testing a 7.3L powerstroke diesel,
more tests become available.
KOEO On Demand
The KOEO On Demand is a functional test of the computer modules and sys-
tem with the Key ON – Engine OFF (KOEO). It tests the inputs, outputs, and
sensor ranges. Any faults or DTCs will be retrieved by the scan tool.
✓ It is VERY IMPORTANT that each step be performed when prompted by
the scan tool. Failure to follow directions may set DTC(s).
Select KOEO On Demand from the
Quick Tests
screen and press .
Follow the instructions displayed on the tool.
1) Set Parking Brake.
2) Put Transmission In Park Or Neutral.
3) Turn A/C Off.
4) Start Engine — Let Idle Until Hot.
5) Turn Ign Key Off.
6) Wait 10 Seconds. Turn Key On-Engine Off. Do Not Start Engine
.
7) For a 7.3L Diesel, depress/hold throttle during test.
✓ For Gasoline engines, Do Not touch the throttle during test.
Press
to begin the test. The
Time Remaining will be displayed.