Dodge Durango

 Service Manual

Ignition System » 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 distributor 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 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 Sensors
• The MAP, TPS, IAC and ECT also have an effect on the control of the ignition system.

Ignition system

Distributor-5.2L/5.9L v-8 engine

Spark plugs

Spark plug cables

Ignition coil (except 4.7L engine)

Ignition coil-4.7L engine

Crankshaft position sensor-5.2/5.9L v-8 engine

Crankshaft position sensor-4.7L engine

Camshaft position sensor

Camshaft position sensor-4.7L engine

Ignition switch and key lock cylinder