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Engine Controls - Basic Diagnostic Procedures
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Engine Controls - Basic Diagnostic Procedures
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Introduction
Component Locations
Programming
Powertrain Control Module
Notes
Programming Powertrain Control Module
Updating Secret Key Data
Connector Identification
Preliminary Inspection & Adjustments
Visual Inspection
Mechanical Inspection
Notes
Cylinder Compression Pressure
Cylinder Combustion Pressure Leakage
Checking Engine Vacuum
Fuel Systems
Notes
Fuel System Pressure Release
Fuel Pressure Test
Notes
Grand Cherokee
Liberty & Wrangler
Fuel Pump Amperage Test
Fuel Pump Capacity Test
Notes
Grand Cherokee & Wrangler
Liberty
Fuel Pressure Leak Down Test
Notes
Grand Cherokee
Liberty & Wrangler
Fuel Pump Control Circuit
Fuel Pump Relay
Ignition Systems
Camshaft Position Sensor
Crankshaft Position Sensor
Ignition Coil
No-Start Diagnosis
Engine Cranks But Does Not Start
No Response From Pcm With A No-Start Condition
Notes
Grand Cherokee
Liberty
Wrangler
DRIVEABILITY Problems
Notes
Start & Stall Condition
Verification Tests
Powertrain Verification Test VER-1
Powertrain Verification Test VER-5
Summary