Chrysler 300M Service Manual page 287

LH
STARTING (Continued)
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.
• Transmission Range Sensor or Park/Neu-
tral Switch - Visually inspect the transmission
range sensor for indications of physical damage and
loose or corroded wire harness connections.
CONDITION
STARTER FAILS 1. BATTERY
TO ENGAGE. DISCHARGED OR
FAULTY.
2. STARTING CIRCUIT
WIRING FAULTY.
3. STARTER RELAY
FAULTY.
4. IGNITION SWITCH
FAULTY.
5. PARK/NEUTRAL
POSITION SWITCH
(AUTO TRANS) FAULTY
OR MIS-ADJUSTED.
6. CLUTCH INTERLOCK
SWITCH (MAN TRANS)
FAULTY.
7. STARTER SOLENOID
FAULTY.
8. STARTER ASSEMBLY
FAULTY.
9. FAULTY TEETH ON
RING GEAR.
10. PCM DOUBLE
START OVERRIDE
OUTPUT FAILURE.
STARTER 1. BATTERY
ENGAGES, DISCHARGED OR
FAILS TO TURN FAULTY.
ENGINE.
STARTING SYSTEM DIAGNOSIS
POSSIBLE CAUSE
• Starter Relay - Visually inspect the starter
relay for indications of physical damage and loose or
corroded wire harness connections.
• Starter Motor - Visually inspect the starter
motor for indications of physical damage and loose or
corroded wire harness connections.
• Starter Solenoid - Visually inspect the starter
solenoid for indications of physical damage and loose
or corroded wire harness connections.
• Wiring - Visually inspect the wire harness for
damage. Repair or replace any faulty wiring, as
required. Check for loose or corroded wire harness
connections at main engine ground and remote jump
post.
• Power Distribution Center (PDC) - Visually
inspect the B+ connections at the PDC for physical
damage and loose or corroded harness connections.
1. REFER TO THE BATTERY SECTION FOR MORE
INFORMATION. CHARGE OR REPLACE BATTERY, IF
REQUIRED.
2. REFER TO FEED CIRCUIT RESISTANCE TEST AND FEED
CIRCUIT TEST IN THIS SECTION.
3. REFER TO RELAY TEST, IN THIS SECTION. REPLACE
RELAY, IF NECESSARY.
4. REFER TO IGNITION SWITCH TEST, IN THE STEERING
SECTION OR 8 WIRING DIAGRAMS. REPLACE SWITCH, IF
NECESSARY.
5. REFER PARK/NEUTRAL POSITION SWITCH TEST, IN THE
TRANSAXLE. SECTION FOR MORE INFORMATION. REPLACE
SWITCH, IF NECESSARY.
6. REFER TO CLUTCH PEDAL POSITION SWITCH TEST, IN
THE CLUTCH. SECTION. REPLACE SWITCH, IF NECESSARY.
7. REFER TO SOLENOID TEST, IN THIS SECTION. REPLACE
STARTER ASSEMBLY, IF NECESSARY.
8. IF ALL OTHER STARTING SYSTEM COMPONENTS AND
CIRCUITS CHECK OK, REPLACE STARTER ASSEMBLY.
9. ROTATE FLYWHEEL 360°, AND INSPECT TEETH AND RING
GEAR REPLACED IF DAMAGED.
10. REFER TO PCM DIAGNOSTIC. CHECK FOR CONTINUITY
BETWEEN PCM AND TERMINAL 85. REPAIR OPEN CIRCUIT
AS REQUIRED. IF OK, PCM MAY BE DEFECTIVE.
1. REFER TO THE BATTERY SECTION FOR MORE
INFORMATION. CHARGE OR REPLACE BATTERY AS
NECESSARY.
STARTING 8F - 23
CORRECTION