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Ford OBD1 Systems
ADDITIONAL TESTS FOR EEC-IV SYSTEMS - WIGGLE TEST
43
1985 & Newer - Vane Air Flow Sensor (VAF)
1986 & Newer - Pressure Feedback EGR Sensor (PFE)
1990 & Newer - Exhaust Gas Oxygen Sensor (EGO), Ignition
Diagnostic Monitor (IDM) (DIS or Dual Plug DIS only), Idle Tracking
Switch (ITS), Mass Air Flow Sensor (MAF)
Check your vehicle thoroughly before performing any test.
ALWAYS observe safety precautions whenever working on a
vehicle.
1. Locate the vehicle's Data Link Connector (DLC).
Some DLCs have a plastic cover that must be removed before
connecting the Scan Tool cable connector.
2. Connect the Scan Tool (with the Ford Connector Cable Adaptor
attached) to the vehicle's DLC. Connect the Scan Tool to BOTH
connectors. Press POWER/LINK
to turn the Scan Tool ON,
then press ENTER
to continue.
The Ford Menu displays.
3. Highlight Wiggle Test, then press ENTER
.
4. The message “Warm up engine to operating temperature” displays.
Start and warm the engine to normal operating temperature. Press
ENTER
to continue.
5. When prompted, turn ignition key OFF and wait for the on screen
prompt. If you wish to exit the KOEO test at this time, press SYSTEM
MENU
.
6. Select the desired Wiggle Test from the
menu displayed.
To perform the KOEO Wiggle Test:
- Highlight KOEO Wiggle Test.
- Turn ignition ON. DO NOT
START THE ENGINE.
- Press ENTER
to continue.
To perform the KOER Wiggle Test:
- Highlight KOER Wiggle Test.
- Turn the ignition ON and start the engine.
- Press ENTER
to continue.
7. A "One moment please test is in progress" message shows temporarily.
If the Scan Tool fails to link to the vehicle's computer, a "Vehicle is
not responding" message shows.
For KOEO Wiggle Test:
- Verify the ignition is ON.
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