Ignition Systems; Four-Cylinder Engine Ignition System; Hei System Components - Jeep J-10 Series 1982 Technical & Service Manual

IGNITION
SYSTEMS
SECTION INDEX
Four-Cylinder Engine Ignition System
Six- ind Eight-Cylinder Engine Ignition System
Pige
1G-1
1G-11
FOUR-CYLINDER ENGINE
IGNITION SYSTEM
Page
Diagnosis 1G-4
General 1G-1
HEI System Components 1G-1
GENERAL
The four-cylinder engine High Energy Ignition (HEI)
System consists of the battery, the distributor with in
tegral electronic module, the ignition coil, the ignition
switch, the spark plugs, and the primary and secondary
wiring. Refer to Chapter ID—Batteries for battery
information.
LATCH
IG-1
Pigi
Vacuum Advance Control Systems 1G-30
Page
On-Vehicle Service 1G-4
Specifications 1G-9
Test Procedures 1G-9
IGNITION
COIL
CONNECTOR
VACUUM
ADVANCE
MECHANISM
81178A
HEI SYSTEM COMPONENTS
The High Energy Ignition System distributor com
bines all ignition components (except the ignition coil)
into one unit (figs. IG-1 and 1G-2). The external con
nections are for the ignition switch, tachometer, and
spark plugs. The ignition switch terminal at the coil has
full battery voltage applied when the ignition switch is
in the RUN and START positions. There is no ballast
resistor or resistance wire between the switch and
distributor.
The ignition coil (fig. 1G-3) is attached to the cylinder
block adjacent to the distributor.
The High Energy Ignition System functions basically
the same as a conventional ignition system, but the
electronic module and pickup coil replace the contact
points.
Fig. IG-1 HEI Distributor