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Engine Controls - Basic Testing - 3.4L/5.7L
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Engine Controls - Basic Testing - 3.4L/5.7L
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Introduction
Preliminary Inspection & Adjustments
Visual Inspection
Mechanical Inspection
Compression
Exhaust System Backpressure
Diagnosis
Pcm Replacement Check
No Start Diagnosis (A-3)
Notes
Definition
No Start - Engine Cranks Okay (3.4L With Dis)
Notes
General Inspection
Ignition System (3.4L VIN S)
Fuel System (3.4L VIN S)
No Start - Engine Cranks Okay (5.7L With OPTI-Spark)
General Inspection
Ignition System
Fuel System
Basic Fuel System Checks (A-7)
Notes
Fuel System Pressure Test
Fuel Pressure Relief
Fuel Pressure Check
Fuel Pump Relay
Fuel Pump Relay By-Pass Procedure
Field Service Mode Check
Basic Ignition System Checks (C-4)
Dis (3.4L)
Spark
Ignition Coil Power Source
Ignition Coil Resistance
Crankshaft Sensor Pick-Up Coil Short & Resistance Checks
Crankshaft Sensor Output Signal
Tach Pulse (RPM) Signal
OPTI-Spark (5.7L VIN P)
Spark
Ignition Coil Power Source
Ignition Coil Resistance
Tach Pulse (RPM Reference) Signal
Idle Speed & Ignition Timing
Diagnostic Circuit Check
Notes
A-1, Mil Inoperative
A-2, Mil On Steady Or Won't Flash Code 12
Notes
5.7L
Summary
Wiring Diagrams
3.4L PCM Wiring Diagram
5.7L PCM Wiring Diagram