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1982
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Marquis Colony Park
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Repair and Diagnosis
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Engine Performance
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Engine Control Systems
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MCU Engine Control System
MCU Engine Control System
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Description
Operation
Microprocessor Control Unit (MCU)
Engine Sensors
Coolant Temperature
Engine Load Sensor
Oxygen Sensor
Engine Speed
Knock Sensor
Self-Test Connector
Engine Controls
Notes
Thermactor Controls
Air/Fuel Controls
Canister Purge Solenoid
Throttle Kicker
Ignition Control
Diagnosis & Testing
Notes
Equipment Required
Preparation For Testing
Functional Test
Notes
Key On, Engine Off Test
Engine Running Test (4 and 6 Cylinder)
Engine Running Test (V8)
Non-Code Tests
Notes
Canister Purge Check (6 Cyl.)
Spark Retard Solenoid Check (6 Cyl.)
Cold Drive Complaint (4 and 6 Cyl.)
Closed or Light Throttle Drive Complaint (All)
Spark Knock Test (V8)
Instructions For Using Sub-Routine Tests
4 & 6 Cylinder (Exc. V6) Sub-Routines
V6 & V8 Sub-Routines