Table Of Contents - Dodge RAM TRUCK 1500 1995 Service Manual

IGNITION SYSTEMS 8 D - 1
IGNITION SYSTEMS
CONTENTS
page page
COMPONENT IDENTIFICATION/SYSTEM DIAGNOSTICS/SERVICE PROCEDURES I
OPERATION 1 IGNITION SWITCH 33
COMPONENT REMOVAL/INSTALLATION 22 SPECIFICATIONS 36
COMPONENT IDENTIFICATION/SYSTEM OPERATION
INDEX
page
Automatic Shutdown (ASD) Relay 2
Camshaft Position Sensor-3.9L V-6 or 5.2/5.9L V-8
Engines 2
Camshaft Position Sensor-8.OL V-10 Engine 3
Crankshaft Position Sensor-3.9L V-6 or 5.2/5.9L
V-8 Engines 3
Crankshaft Position Sensor-8.0L V-10 Engine . . . . 4
Distributors-3.9L V-6 or 5.2/5.9L V-8 Engines 5
Engine Coolant Temperature Sensor 7
GENERAL INFORMATION
Throughout this group, references are made to par­
ticular vehicle models by alphabetical designation or
by the particular vehicle nameplate. A chart showing
a breakdown of alphabetical designations is included
in the Introduction group at the beginning of this
manual.
All vehicles are equipped with either a 3.9L V-6 en­
gine, a 5.2L V-8 engine, two different 5.9L V-8 en­
gines, an 8.0L V-10 engine or a 5.9L Cummins in-line
6-cylinder diesel engine. Refer to Group 14, Fuel Sys­
tem for diesel fuel service procedures.
The 3.9L V-6 and 5.2L V-8 engines will be referred
to in this Ignition group as: Light Duty Cycle (LDC)
engines. The 5.9L V-8 gas powered engine will be re­
ferred to as either: Light Duty Cycle (LDC) or Heavy
Duty Cycle (HDC) engine. The 8.0L V-10 engine will
be referred to as: Heavy Duty Cycle (HDC) engine.
Either of the HDC gas powered engines can be eas­
ily identified by the use of an engine mounted air in­
jection pump. The 3.9L V-6 engine, the 5.2/5.9L V-8
LDC gas engines or the diesel engine will not use an
air injection pump.
This section of the group, Component Identifica­
tion/System Operation, will discuss ignition system
operation and will identify ignition system compo­
nents.
page
General Information 1
Ignition Coil Packs-8.0L V-10 Engine 6
Ignition Coil-3.9L V-6 or 5.2/5.9L V-8 Engines . . . . 5
Ignition Control Module-8.0L V-10 Engine 7
Intake Manifold Air Temperature Sensor 7
Manifold Absolute Pressure (MAP) Sensor 7
Oxygen Sensor (02S) 8
Powertrain Control Module (PCM) 7
For diagnostic procedures and adjustments, refer to
the Diagnostics/Service Procedures section of this
group.
For removal and installation of ignition system
components, refer to the Component Removal/Instal­
lation section of this group.
For other useful information, refer to On-Board Di­
agnostics in the General Diagnosis sections of Group
14, Fuel System in this manual.
For operation of the DRB Scan Tool, refer to the
appropriate Powertrain Diagnostic Procedures ser­
vice manual.
An Ignition specifications section is included at the
end of this group. A general Maintenance Schedule
(mileage or time intervals) for ignition related items
can be found in Group 0, Lubrication and Mainte­
nance. This schedule can also be found in the Owners
Manual.
IGNITION SYSTEMS
The ignition systems used on the 3.9L V-6, 5.2L V-8
and both of the 5.9L V-8 engines are basically iden­
tical with each engine using a mechanical distributor.
Similarities and differences between the systems will
be discussed.