Engine Controls - Tests W/Codes - EEC-IV (4.0L): Description
WARNING: This page is about a different car, the 1995 Ford Explorer and 1995 Ford Aerostar. However, it is still accessible from the selected car via links, so may be relevant.
Following procedures are functional tests of EEC-IV system. These 5 basic test steps must be followed in sequence to avoid misdiagnosis.
- Visual Check
- Equipment Hookup
- KOEO (Key On Engine Off) SELF-TEST
- KOER (Key On Engine Running) SELF-TEST
- Continuous Monitor Mode (Wiggle Test)