DFI Theory/Operation
- Description
- Notes
- System Operation
- Fuel Delivery Operation
- Air Induction Operation
- Electronic Control Module (ECM) Operation
- Input/Output Devices
- Central Processing Unit (CPU)
- Power Supply
- Memories
- DFI/ECM System Control Schematic
- BCM Module
- Climate Control/Driver Information Center
- Input Data Sensors Operation
- Coolant Temperature Sensor (Cts)
- Crank Signal
- Cruise Control
- Engine Speed (Distributor Reference Signal)
- Gear Switches
- Manifold Absolute Pressure (Map) Sensor
- Manifold Air Temperature (Mat) Sensor
- Oxygen Sensor
- Park/Neutral Safety Switch
- Power Steering Pressure Switch (PSPS)
- Throttle Position Sensor (TPS)
- Throttle Switch
- Transmission Temperature Sensor
- Vehicle Speed Sensor (VSS)
- A/C Relay
- Cruise Control Solenoids
- Electronic Spark Timing (Est)
- Fuel Injectors
- Fuel Pump Relay
- Idle Speed Control (ISC)
- Viscous Converter Clutch System (VCC)
- Closed Loop Fuel Control Operation
- Emission Controls Operation
- "Service Soon" & "Service Now" Telltale Operation
- BCM/ECM Computer System Status Lights Operation
- "Off" Status Indicator
- "Auto" Status Indicator
- "Econ" Status Indicator
- "C" Status Indicator
- "F" Status Indicator
- "E" Status Indicator
- "Front Defog" Status Indicator
- "Rear Defog" Status Indicator
- "Lo" Status Indicator
- "Norm" Status Indicator
- "Hi" Status Indicator