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Grand Cherokee Laredo, 4.7 N, AWD
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Engine Controls - Basic Diagnostic Procedures
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Engine Controls - Basic Diagnostic Procedures
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Introduction
Programming
Powertrain Control Module
Notes
Programming Powertrain Control Module
Updating Secret Key Data
Preliminary Inspection & Adjustments
Visual Inspection
Mechanical Inspection
Notes
Compression
Checking Engine Vacuum
Checking Engine Mechanical Systems
Fuel Systems
Notes
Fuel System Pressure Release
Fuel Pressure Test
Cherokee & Wrangler
Grand Cherokee
Fuel Pump Amperage Test
Cherokee
Grand Cherokee
Wrangler
Fuel Pump Volume Test
Fuel System Pressure Leak-Down Test
Cherokee & Wrangler
Grand Cherokee
Fuel Pump Control Circuit
Fuel Pump Relay
Ignition Systems
Checking Secondary Ignition (2.5L)
Camshaft Position Sensor
Crankshaft Position Sensor
No-Start Diagnosis
Engine Cranks But Does Not Start
Notes
Cherokee (2.5L)
Cherokee (4.0L)
Grand Cherokee
Wrangler (2.5L)
Wrangler (4.0L)
Engine Does Not Start & DRB Displays No Response
Notes
Cherokee
Grand Cherokee
Wrangler
Verification Tests
Test VER-1
Test VER-2
Summary