Power for PCM reference output signals (5 volts) and control devices (12 volts) is received from the battery (through ignition circuit when ignition switch is in ON position). Keep alive memory power is received directly from battery.
Home/Cadillac/DeVille Concours/Cadillac DeVille Concours (1994-1998)/Repair manual/Theory & Operation/Power Supply
Contents
Section: Theory & Operation- Introduction
- Terminology
- Mass Airflow (MAF)
- Speed Density
- Computerized Engine Controls
- Powertrain Control Module (PCM)
- Arithmetic Logic Unit (alu)
- Central Processing Unit (cpu)
- Power Supply
- Memories
- Input Devices
- A/c Request Signal
- A/c Pressure Sensor
- A/c Pressure Switches
- A/c Temperature Sensors
- Battery Voltage
- Brake Switch Feedback
- Camshaft Position Sensor
- Crankshaft Position (ckp) Sensor
- Engine Coolant Temperature (ECT) Sensor
- Fuel Pump Feedback
- Gear Switches
- Ignition/crank Signal
- Intake Air Temperature (IAT) Sensor
- Knock Sensor
- Manifold Absolute Pressure (MAP) Sensor
- Mass Airflow (MAF) Sensor
- Oil Temperature (engine) Sensor (corvette)
- Oxygen Sensor (O2S)
- Park/neutral Position (pnp) Switch
- Power Steering Pressure (psp) Switch
- RPM Reference Signal
- Throttle Position (tp) Sensor
- Throttle Position Switch
- Transmission Range Switch
- Vehicle Speed Sensor (vss)
- Output Signals
- A/c Compressor Clutch
- Canister Purge Control Solenoid
- Computer Controlled Coil Ignition (C(3)I)
- Cooling Fan Relay
- Digital EGR Valve
- Direct Ignition System (dis)
- EGR Control Solenoid
- Electronic Variable Orifice (evo) Actuator
- Fuel Injectors
- Fuel Pump & Fuel Pump Relay
- High Energy Ignition Electronic Spark Timing (hei-Est)
- Hot Light or Coolant Temperature (temp) Light
- Idle Speed Control (isc) Motor
- Linear EGR Valve
- Knock Sensor Operation
- Malfunction Indicator Light (MIL)
- Self-Diagnostics
- Serial Data
- Shift Light
- Shift Solenoids (electronically-Controlled Auto Transmission)
- Torque Converter Clutch
- Fuel Pump
- Fuel Pump Relay
- Fuel Pressure Regulator
- Fuel Control
- Open Loop
- Closed Loop
- Battery Voltage Correction
- Fuel Cut-Off
- Multiport Fuel Injection (mfi)
- Sequential Fuel Injection (sfi)
- Idle Speed
- Ignition System
- Ignition Timing Advance
- Emission Systems
- Exhaust Gas Recirculation (EGR)
- Digital EGR System
- Linear EGR System
- Negative Backpressure EGR Valve
- Evaporative Emission Control
- Carbon Canister
- Canister Purge Control Valve
- Tank Pressure Control Valve
- Except
- Self-Diagnostic System
- "hard Failures"
- "intermittent Failures"
- Miscellaneous Controls
- Electric Cooling Fan
- Electronic Variable Orifice (evo) Actuator (saturn)
- Hot Light or Coolant Temperature Light
- Torque Converter Clutch (non-Electronic Transmission)
- Torque Converter Clutch (electronic Transmission)
- Electronic Transmission
- Abbreviations
- Accessory Drive Belts
- Adjustments
- Airbag
- Anti-Lock/traction Control
- Application
- Automatic HVAC System
- Automatic Trans
- Axle Shafts
- Basic Trouble Shooting
- Body, Cab Control Systems
- Brakes
- Charging System
- Check Lists
- Computer Relearn
- Cooling Fan
- Cruise Control Systems
- Diagnostic Connector Locations
- Door Locks & Anti-Theft Systems
- Drive Cycles
- Driveline/axles
- DTC Index
- Electrical
- Electrical Component Locations
- Electronic Suspension
- Emission Applications
- Engine
- Engine Performance
- Fuses & Circuit Breakers
- Gauges & Instrument Panels
- General Servicing - All Makes
- Headlights
- Heated Glass/defoggers
- Identification
- Manual & Power Steering
- MAP Guidelines
- Mechanical
- Mechanical - Hydraulic
- Metric Conversions
- Mirrors
- Mode 6
- Passive Restraints
- Procedures
- Removal & Installation
- Reset Procedures
- Restraints
- Rpo Codes
- Seats
- Sensor Range Charts
- Specifications
- Starter
- Steering
- Steering Column
- Steering Column Switches
- Sun Roof/t-Top/convertible Top
- Suspension Front
- Suspension Rear
- Testing & Diagnostics
- Theory & Operation
- Traction Control Disable
- Transmission
- Wheel Alignment
- Windows
- Wiper/washer Systems
- Wiring Diagrams - Engine Performance