The PCM monitors initial cranking (RPM) signal to determine when the engine is being started. This information is used for starting enrichment. If this signal is intermittent or not available, hard starting or a no-start condition will result.
Home/Cadillac/Catera/Cadillac Catera I (1996-2001)/Repair manual/Theory & Operation/Ignition/crank Signal
Contents
Wiring diagrams Section: Theory & Operation- Introduction
- Mass Airflow (MAF) Sensor
- Speed Density
- Multi-Ram System Diagnosis
- 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
- Engine Coolant Temperature (ECT) Sensor
- Engine Coolant Level Switch
- Engine Oil Level Switch
- Engine Oil Pressure Switch
- Fuel Level Sensor
- Fuel Pump Feedback
- Fuel Tank Vapor Pressure Sensor
- Gear Switches
- Generator "L" Light Circuit
- Generator "F" Field Circuit
- Ignition/crank Signal
- Intake Air Temperature (IAT) Sensor
- Knock Sensor
- Manifold Absolute Pressure (MAP) Sensor
- Oxygen Sensor (O2S)
- Park/neutral Position (Pnp) Switch
- Power Steering Pressure (Psp) Switch
- RPM Reference Signal
- Throttle Position (Tp) Sensor
- Throttle Position Switch
- Transmission Fluid Temperature Sensor
- Transmission Range Switch
- Vehicle Speed Sensor (Vss)
- Output Signals
- A/c Compressor Clutch
- Air Injection System
- Canister Purge Control Solenoid
- Coil-Near-Plug (Cnp) Ignition
- Computer Controlled Coil Ignition (C(3)I)
- Cooling Fan Relay
- Digital EGR Valve
- EGR Control Solenoid
- Electronic Variable Orifice (Evo) Actuator
- Fuel Injectors
- Fuel Pump & Fuel Pump Relay
- Hot Light or Coolant Temperature (Temp) Light
- Idle Air Control (Iac) Valve
- Integrated Direct Ignition (Idi)
- 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
- Idle Air Control Valve
- Ignition System
- Catera Dis
- Ignition Timing Advance
- Emission Systems
- Air Pump (Electric)
- Check Valve
- Electric Air Pump Relay
- Three-Way Catalytic (Twc) Converter
- 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
- Positive Crankcase Ventilation (PCV)
- Self-Diagnostic System
- Miscellaneous Controls
- Electric Cooling Fan
- Hot Light or Coolant Temperature Light
- Torque Converter Clutch (Non-Electronic Transmission)
- Torque Converter Clutch (Electronic Transmission)
- Electronic Transmission
- A/c Compressor
- Abbreviations
- Accessory Drive Belts
- Adjustments
- Airbag
- Anti-Lock/traction Control
- Application
- Automatic HVAC System
- Automatic Trans
- Auxiliary Emission Control Systems
- Axle Shafts
- Basic Trouble Shooting
- Body Electrical
- Body, Cab Control Systems
- Brakes
- Cabin Air Filter
- Charging System
- Check Lists
- Computer Relearn
- Cooling Fan
- Cruise Control Systems
- Diagnostic Connector Locations
- Differentials & Drive Axles
- Door Locks & Anti-Theft Systems
- Drive Cycles
- Driveline/axles
- Driveshaft & Universal Joints
- DTC Index
- Electrical
- Electrical Component Locations
- Electronic Steering
- 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
- Manual HVAC System
- MAP Guidelines
- Mechanical
- Mechanical - Hydraulic
- Metric Conversions
- Mirrors
- Mode 6
- 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
- Timing Belt
- Traction Control Disable
- Transmission
- Wheel Alignment
- Windows
- Wiper/washer Systems
- Wiring Diagrams - Engine Performance