Jeep 200 Cherokee, Service Manual

Page: 342 / 2119

STARTING SYSTEMS
TABLE OF CONTENTS
page page
DESCRIPTION AND OPERATION
STARTING SYSTEM . . . . . . . . . . . . . . . . . . . . . . . 1
STARTER MOTOR. . . . . . . . . . . . . . . . . . . . . . . . . 2
STARTER RELAY . . . . . . . . . . . . . . . . . . . . . . . . . 3
DIAGNOSIS AND TESTING
STARTING SYSTEM . . . . . . . . . . . . . . . . . . . . . . . 4
STARTER MOTOR NOISE - 2.5L ENGINE . . . . . . 8
STARTER MOTOR. . . . . . . . . . . . . . . . . . . . . . . . . 9
STARTER RELAY . . . . . . . . . . . . . . . . . . . . . . . . 10
REMOVAL AND INSTALLATION
STARTER MOTOR. . . . . . . . . . . . . . . . . . . . . . . . 11
STARTER RELAY . . . . . . . . . . . . . . . . . . . . . . . . 13
CLEANING AND INSPECTION
STARTING SYSTEM . . . . . . . . . . . . . . . . . . . . . . 14
SPECIFICATIONS
STARTING SYSTEM . . . . . . . . . . . . . . . . . . . . . . 15
DESCRIPTION AND OPERATION
STARTING SYSTEM
DESCRIPTION
An electrically operated engine starting system is
standard factory-installed equipment on this model.
The starting system is designed to provide the vehi-
cle operator with a convenient, efficient and reliable
means of cranking and starting the internal combus-
tion engine used to power the vehicle and all of its
accessory systems. The starting system includes the
following major components:
•
Battery
•
Battery cables
•
Clutch pedal position switch (manual transmis-
sion)
•
Ignition switch
•
Park/neutral position switch (automatic trans-
mission)
•
Starter motor (including the integral starter
solenoid)
•
Starter relay.
The starting system consists of two separate cir-
cuits. A high-amperage feed circuit that feeds the
starter motor between 150 and 350 amperes of bat-
tery current, and a low-amperage control circuit that
operates on less than 20 amperes of battery current.
The starting system high-amperage feed circuit
includes the battery, the battery cables, the contact
disc portion of the starter solenoid, and the starter
motor. The following starting system feed circuit
components are covered in more detail in other areas
of this service manual:
•
The battery is located in the passenger side
front corner of the engine compartment, near the
upper radiator crossmember and provides the electri-
cal current needed to operate the starting system.
Refer to Battery in the index of this service manual
for the location of more information on the battery.
•
The battery cables connect the battery to the
electrical system of the vehicle and to the starting
system. Refer to Battery Cables in the index of this
service manual for the location of more information
on the battery cables.
The starting system low-amperage control circuit
includes the ignition switch, the clutch pedal position
switch (manual transmission), the park/neutral posi-
tion switch (automatic transmission), the starter
relay, the electromagnetic windings of the starter
solenoid, and the wire harnesses that connect these
components. The following starting system control
circuit components are covered in more detail in
other areas of this service manual:
•
The ignition switch is mounted on the bottom of
the steering column and actuates the starting system
when a properly coded ignition key is inserted in the
ignition lock cylinder on the right side of the steering
column and turned to the spring-loaded momentary
Start position. Refer to Ignition Switch and Key
Lock Cylinder in the index of this service manual
for the location of more information on the ignition
switch.
•
The clutch pedal position switch is integral to
the master cylinder of the clutch hydraulic linkage
assembly on models equipped with a manual trans-
mission. Refer to Clutch Hydraulic Linkage in the
index of this service manual for the location of more
information on the clutch pedal position switch.
•
On models with the 2.5L engine, the park/neu-
tral position switch is threaded into the left side of
the automatic transmission case and has a spring-
loaded plunger that is actuated by a cam integral to
the gearshift mechanism within the transmission.
The back up lamp switch is also integral to the park/
neutral position switch. On models with the 4.0L
XJ
STARTING SYSTEMS 8B - 1