Chrysler 300M 2002 Service Manual page 291

8F - 22 STARTING
STARTING
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . 22
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - STARTING
SYSTEM TEST . . . . . . . . . . . . . . . . . . . . . . . 22
DIAGNOSIS AND TESTING - CONTROL
CIRCUIT TEST . . . . . . . . . . . . . . . . . . . . . . . . 25
DIAGNOSIS AND TESTING - FEED CIRCUIT
RESISTANCE TEST . . . . . . . . . . . . . . . . . . . . 27
SPECIFICATIONS
STARTER . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
SPECIFICATIONS - TORQUE
STARTER MOTOR
DESCRIPTION
DESCRIPTION - 2.7L
STARTING
DESCRIPTION
The starting system has (Fig. 1):
• Ignition switch
• Starter relay
• Transmission Range Sensor or Park/Neutral
Switch
• Wiring harness
• Battery
• Starter motor with an integral solenoid
• Powertrain Control Module (PCM)
OPERATION
These components form two separate circuits. A
high amperage circuit that feeds the starter motor up
to 300+ amps, and a control circuit that operates on
less than 20 amps.
The PCM controls a double start over-ride safety
that does not allow the starter to be engaged if the
engine is already running.
STARTING
TABLE OF CONTENTS
page
. . . . . . . . . . . . 28
. . . . . . . . . . . . . . . . . . . 28
DESCRIPTION - 3.5L
OPERATION
OPERATION - 2.7L
OPERATION - 3.5L
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 28
STARTER MOTOR RELAY
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . 29
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
DIAGNOSIS AND TESTING - STARTER RELAY . 29
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
STARTER SOLENOID
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . 30
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
DIAGNOSIS AND TESTING - STARTER
SOLENOID . . . . . . . . . . . . . . . . . . . . . . . . . . 30
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - STARTING
SYSTEM TEST
For circuit descriptions and diagrams, refer to the
Wiring Diagrams.
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER TO THE PASSIVE RESTRAINT SYS-
TEMS BEFORE ATTEMPTING STEERING WHEEL,
STEERING COLUMN, OR INSTRUMENT PANEL
COMPONENT DIAGNOSIS OR SERVICE. FAILURE
TO TAKE THE PROPER PRECAUTIONS COULD
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
INSPECTION
Before removing any unit from the starting system
for repair or diagnosis, perform the following inspec-
tions:
• Battery - Visually inspect the battery for indi-
cations of physical damage and loose or corroded
cable connections. Determine the state-of-charge and
cranking capacity of the battery. Charge or replace
the battery, if required. Refer to the Battery section
for more information.
• Ignition Switch - Visually inspect the ignition
switch for indications of physical damage and loose
or corroded wire harness connections.
. . . . . . . . . . . . . . . . . . . 28
. . . . . . . . . . . . . . . . . . . . 28
. . . . . . . . . . . . . . . . . . . . 28
LH
page