EEC IV Theory/Operation
- Description
- Operation
- Notes
- Inputs
- A/C Compressor Clutch Signal
- Air Charge Temperature (ACT) Sensor (All Exc. 1.9L EFI)
- Barometric Pressure (BP) Sensor (1.9 EFI & 2.3L EFI/Turbo)
- Brake On/Off (BOO) Switch (2.3L HSC/CFI, 2.5L HSC/CFI, 2.3L EFI, 2.3L EFI/Turbo & 3.0L EFI)
- Detonation (Knock) Sensor (2.3L EFI, 2.3L EFI/Turbo, & 3.0L EFI)
- EEC Power Relay (1.9L CFI, 2.3L HSC/CFI, 3.8L CFI, 1.9L EFI, 2.3L EFI & 5.0L SEFI)
- EGR Valve Position (EVP) Sensor (2.3L HSC/CFI, 2.5L HSC/CFI, 3.8L CFI, 2.3L EFI & 5.0L SEFI)
- Engine Coolant Temperature (ECT) Sensor
- Idle Tracking Switch (ITS) (1.9L CFI, 2.3L HSC/CFI, 2.5L HSC/CFI & 3.8L CFI)
- Manifold Absolute Pressure (MAP) Sensor (1.9L CFI, 2.3L HSC/CFI, 2.5L HSC/CFI, 2.3L EFI, 3.0L EFI, 3.8L CFI & 5.0L SEFI)
- Neutral Drive Switch (NDS) & Neutral Gear Switch (NGS)
- Heated Oxygen (HEGO) Sensor
- Profile Ignition Pick-Up (PIP)
- Power Steering Pressure Switch (PSPS) (2.3L HSC/CFI, 2.5 CFI, 2.3L EFI & 3.0L EFI Engines)
- Pressure Feedback Electronic (PFE) EGR Valve (1.9L CFI & 3.0L EFI Engine)
- Self-Test Input (SRI)
- Throttle Position Sensor (TPS)
- Vane Airflow (VAF) Meter (1.9L CFI, 1.9L EFI & 2.3L EFI/Turbo)
- Outputs
- A/C/Cooling Fan Controller & Wide Open Throttle A/C (WAC) Cut-Off
- Canister Purge Solenoid (CANP) (All Except 2.3L EFI, 2.3L EFI/Turbo, 2.3L CFI & 3.8L CFI)
- EGR Control (EGRC) Solenoid (2.3L EFI & 3.8L CFI)
- EGR Shut-Off (EGRSO) Solenoid (1.9L CFI, 1.9L EFI & 2.3L EFI/Turbo)
- EGR Vent (EGRV) Solenoid (2.3L EFI & 3.8L CFI)
- Exhaust Heat Control (EHC) Valve (3.8L CFI)
- Fuel Injectors
- Fuel Pump Relay
- Idle Speed Control (ISC) Motor (1.9L CFI, 2.3L HSC/CFI, 2.5 HSC/CFI & 3.8L CFI)
- Integrated Relay Controller Module (IRCM) (2.5L HSC/CFI, 2.3L EFI/Turbo & 3.0L EFI)
- Self-Test Output (STO)
- Shift Indicator Light (SIL) (1.9L CFI, 2.3L HSC/CFI, 2.5L HSC/CFI, 2.3L EFI/Turbo, & 5.0L SEFI Engines)
- Spark Output (SPOUT)
- Thermactor Air By-Pass (TAB) Solenoid (3.8L CFI & 5.0L SEFI)
- Thermactor Air Diverter (TAD) Solenoid (3.8L CFI & 5.0L SEFI)
- Throttle Air By-Pass Valve (1.9L EFI, 2.3L EFI, 2.3L EFI/Turbo, 3.0L EFI & 5.0L SEFI)