EEC IV Theory/Operation
- Description
- Operation
- Notes
- ECA Input Sensors
- A/C Compressor Clutch Signal
- Air Charge Temperature (ACT) Sensor (All Engines Except 1.9L MPFI Engine)
- Barometric Pressure (BP) Sensor (1.9 MPFI & 2.3L Turbo MPFI Engines)
- Brake On/Off (BOO) Switch (2.3L MPFI, 2.3L Turbo MPFI, 2.5L CFI, 3.0L MPFI, & 3.8L MPFI (FWD) Engines)
- Knock Sensor (KS) (2.3L MPFI, 2.3L Turbo MPFI, 3.0L MPFI Engines)
- EEC Power Relay (1.9L CFI, 1.9L MPFI, 2.3L MPFI, 3.8L MPFI (RWD), & 5.0L SEFI Engines)
- EGR Valve Position (EVP) Sensor (2.3L OHC MPFI, 2.5L CFI, 5.0L SEFI Engines)
- Engine Coolant Temperature (ECT) Sensor
- Idle Tracking Switch (ITS) (1.9L CFI & 2.5L CFI Engines)
- Manifold Absolute Pressure (MAP) Sensor
- Neutral Drive Switch (NDS) & Neutral Gear Switch (NGS)
- Heated Oxygen (HEGO) Sensor
- Profile Ignition Pick-Up (PIP)
- Power Steering Pressure Switch (PSPS) (2.3L MPFI, 2.5 CFI, 3.0L MPFI & 3.8L MPFI (FWD) Engines)
- Pressure Feedback Electronic (PFE) EGR Valve (1.9L CFI, 2.3L HSC MPFI, 3.0L MPFI & 3.8L MPFI Engine)
- Self-Test Input (STI)
- Throttle Position (TP) Sensor
- Vane Airflow (VAF) Meter (1.9L MPFI & 2.3L Turbo MPFI Engines)
- Mass Airflow (MAF) Sensor (5.0L MA/MPFI)
- ECA Output Controlled Items
- Diagnosis & Testing