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Cadillac
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1981
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Seville 4.1L Eng VIN 4
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Repair and Diagnosis
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Engine Performance
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Engine Control Systems
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DFI Control System
DFI Control System
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Description
Operation
Notes
Fuel Delivery
Air Induction
Data Sensors
Notes
Manifold Air Temperature (MAT)
Coolant Temperature Sensor (CTS)
Manifold Absolute Pressure (MAP)
Barometric Pressure Sensor (BARO)
Throttle Position Sensor (TPS)
Vehicle Speed Sensor
Oxygen Sensor
Engine Speed Sensor
Electronic Control Module (ECM)
Notes
Input/Output Devices
Central Processing Unit (CPU)
Power Supply
Memories
Electronic Spark Timing (Est)
Idle Speed Control (ISC)
Emission Controls
Closed Loop Fuel Control
Cruise Control
Diagnostic System
Notes
Engine Malfunction Test
Switch Tests
Engine Data Displays
Output Cycling Tests
Modulated Displacement (MD)
Catalytic Converter
Diagnosis & Testing
Notes
Entering Diagnostic Mode
Clearing Trouble Codes
Exiting Diagnostic Mode
Failure Code Determination
Diagnostic Procedure
Notes
Engine Malfunction Test Procedure
Switch Test Procedure
Engine Data Display Procedure
Output Cycling Tests Procedure
Performance Charts
Trouble Code Charts
Performance Chart
Maintenance
Removal & Installation
Electronic Control Module (ECM)
Removal & Installation
Programmable Read Only Memory (Prom)
Removal
Installation
Mpg Display
Removal & Installation
Throttle Position Sensor (TPS)
Notes
Removal
Installation
Idle Speed Control Actuator (ISC)
Removal & Installation
Manifold Absolute Pressure Sensor (Map) & Barometric Pressure Sensor (BARO)
Removal
Installation
Coolant Temperature Sensor (Cts)
Removal
Installation
Manifold Air Temperature Sensor (Mat)
Removal & Installation
Oxygen Sensor
Removal & Installation