Dodge 2000 DURANGO Service Manual page 287

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DESCRIPTION AND OPERATION
IGNITION SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . 1
DISTRIBUTOR—5.2L/5.9L V-8 ENGINE . . . . . . . . 1
SPARK PLUGS . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SPARK PLUG CABLES . . . . . . . . . . . . . . . . . . . . . 2
IGNITION COIL (EXCEPT 4.7L ENGINE). . . . . . . . 2
IGNITION COIL—4.7L ENGINE. . . . . . . . . . . . . . . 3
CRANKSHAFT POSITION SENSOR—5.2/5.9L
V-8 ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
CRANKSHAFT POSITION SENSOR—4.7L
ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
CAMSHAFT POSITION SENSOR. . . . . . . . . . . . . . 4
CAMSHAFT POSITION SENSOR—4.7L
ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
IGNITION SWITCH AND KEY LOCK
CYLINDER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
DIAGNOSIS AND TESTING
DISTRIBUTOR CAP. . . . . . . . . . . . . . . . . . . . . . . . 6
DISTRIBUTOR ROTOR . . . . . . . . . . . . . . . . . . . . . 6
SPARK PLUG CABLES . . . . . . . . . . . . . . . . . . . . . 7
SPARK PLUG CONDITIONS . . . . . . . . . . . . . . . . . 8
IGNITION SWITCH AND KEY LOCK
CYLINDER . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
REMOVAL AND INSTALLATION
SPARK PLUG CABLES . . . . . . . . . . . . . . . . . . . . 11
DESCRIPTION AND OPERATION
IGNITION SYSTEM
DESCRIPTION
Two different ignition systems are used. One type
of system is for the 5.2L/5.9L V-8 engine. The other is
for the 4.7L V-8 engine.
The ignition systems used on 5.2L/5.9L V-8 engines
are basically identical using a conventional distribu-
tor and remotely mounted coil. The 4.7L V-8 engine
does not use a distributor and has 8 separate coils.
OPERATION
The ignition system is controlled by the Powertrain
Control Module (PCM) on all engines.
The ignition system consists of:
• Spark Plugs
IGNITION SYSTEM
TABLE OF CONTENTS
page
SPARK PLUGS . . . . . . . . . . . . . . . . . . . . . . . . . . 11
IGNITION COIL—3.9/5.2/5.9L ENGINES . . . . . . 12
IGNITION COIL—4.7L ENGINE. . . . . . . . . . . . . . 13
CRANKSHAFT POSITION SENSOR—3.9/5.2/
5.9L ENGINES . . . . . . . . . . . . . . . . . . . . . . . . . 14
CRANKSHAFT POSITION SENSOR—4.7L V-8
ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
CAMSHAFT POSITION SENSOR. . . . . . . . . . . . . 15
CAMSHAFT POSITION SENSOR—4.7L
ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
DISTRIBUTORS—3.9/5.2/5.9L ENGINES . . . . . . 16
IGNITION SWITCH AND KEY CYLINDER . . . . . . 17
COLUMN SHIFT INTERLOCK . . . . . . . . . . . . . . . 21
SPECIFICATIONS
IGNITION TIMING. . . . . . . . . . . . . . . . . . . . . . . . 21
ENGINE FIRING ORDER—5.2L/5.9L V-8
ENGINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
ENGINE FIRING ORDER—4.7L V-8 ENGINE . . . 21
SPARK PLUGS . . . . . . . . . . . . . . . . . . . . . . . . . . 22
SPARK PLUG CABLE RESISTANCE . . . . . . . . . . 22
IGNITION COIL RESISTANCE—EXCEPT 4.7L
ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
IGNITION COIL RESISTANCE—4.7L V-8
ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
TORQUE CHART . . . . . . . . . . . . . . . . . . . . . . . . . 22
• Ignition Coil(s)
• Secondary Ignition Cables (5.2L/5.9L engines)
• Distributor (contains rotor and camshaft position
sensor) (5.2L/5.9L engines)
• Powertrain Control Module (PCM)
• Crankshaft Position and Camshaft Position Sen-
sors
• The MAP, TPS, IAC and ECT also have an effect
on the control of the ignition system.
DISTRIBUTOR—5.2L/5.9L V-8 ENGINE
DESCRIPTION
The 5.2L/5.9L V-8 engine is equipped with a cam-
shaft driven mechanical distributor (Fig. 1) contain-
ing a shaft driven distributor rotor. All distributors
are equipped with an internal camshaft position (fuel
sync) sensor (Fig. 1).
IGNITION SYSTEM 8D - 1
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