Chrysler Le Baron, Dodge Dynasty, Plymouth Acclaim. Manual — part 271
STARTER CONTROL CIRCUIT TESTS
The starter control circuit has:
• Starter solenoid
• Starter relay (Fig. 2)
• Neutral starting and back-up switch with auto-
matic transmissions
• Clutch pedal mounted starter interlock switch
with manual transmissions
• Ignition switch
• Battery
• All related wiring and connections
CAUTION: Before performing any starter tests, the
ignition system must be disabled.
• VEHICLES EQUIPPED WITH A CONVEN-
TIONAL DISTRIBUTOR: Disconnect coil wire from
distributor cap center tower. Secure wire to a good
ground to prevent engine from starting (Fig. 6).
• VEHICLES EQUIPPED WITH DIRECT IGNI-
TION SYSTEM: Unplug the coils electrical connector
(Fig. 7).
STARTER SOLENOID TEST
WARNING: CHECK TO ENSURE THAT THE TRANS-
MISSION IS IN PARK OR NEUTRAL WITH THE
PARKING BRAKE APPLIED
(1) Verify battery condition. Battery must be in
good condition with a full charge before performing
any starter tests. Refer to Battery Tests.
(2) Perform this starter solenoid test BEFORE per-
forming the starter relay test.
(3) Raise the vehicle.
(4) Perform a visual inspection of the starter/
starter solenoid for corrosion, loose connections or
faulty wiring.
(5) Lower the vehicle.
(6) Locate the starter relay as follows:
• On AC, AG, AJ and AY Bodies the relay is located
in the Power Distribution Center. This Center is
mounted near the front of the left front strut tower
(Fig. 13). The position of the starter relay within this
Center will be shown on the Center cover.
• On AA/AP Bodies the relay is located on the front
of the left front strut tower (Fig. 14).
(7) Remove the starter relay from the connector.
(8) Connect a remote starter switch or a jumper
wire between the battery positive post and terminal
87 on the starter relay connector. To decide the
starter relay terminal numbers, refer to the Starter
Relay Tests.
• If engine now cranks, starter/starter solenoid is
good. Go to the starter relay test.
• If engine does not crank with this test, or solenoid
chatters, check wiring and connectors from starter
Fig. 12 Test Positive Battery Cable Resistance
Fig. 13 Starter Relay Location—AC, AG, AJ, and AY
Bodies
Fig. 14 Starter Relay Location—AA/AP Body
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BATTERY/STARTING/CHARGING SYSTEMS DIAGNOSTICS
8A - 15
relay to starter solenoid for loose or corroded connec-
tions. Particularly at starter terminals.
• Repeat test. If engine still fails to crank properly,
trouble is within starter or starter mounted solenoid,
and it must be removed for repairs. Refer to Group
8B, Battery/Starter/Generator Service, Starter re-
placement.
STARTER RELAY TEST
WARNING: CHECK TO ENSURE THAT THE TRANS-
MISSION IS IN PARK OR NEUTRAL WITH THE
PARKING BRAKE APPLIED
(1) Verify battery condition. Battery must be in
good condition with a full charge before performing
any starter tests. Refer to Battery Tests.
(2) Perform the preceding starter solenoid tests
BEFORE performing starter relay tests. Refer to
Starter Solenoid Test.
(3) Locate and remove the starter relay. For
starter relay locations, refer to Starter Solenoid Test
(Fig. 13 or 14).
(4) After the starter relay has been located and re-
moved, refer to Starter Relay Tests (Fig. 15).
NEUTRAL STARTING AND BACK-UP SWITCH
AUTOMATIC TRANSMISSION ONLY
For electrical diagnostics, when checking starter
circuits, refer to Starter Relay Tests (Fig. 15).
For replacement of switch, refer to Group 21, Tran-
saxle, Neutral Starting and Switch Replacement.
STARTER INTERLOCK SWITCH—CLUTCH
PEDAL MOUNTED
MANUAL TRANSMISSION ONLY
For electrical diagnostics, refer to the Starter Relay
Tests.
For replacement and/or adjustment of the switch,
refer to Group 6, Manual Transaxle Clutch, Manual
Transaxle Starter Interlock Switch.
IGNITION SWITCH TEST
After testing the starter solenoid and relay, test ig-
nition switch and wiring. Refer to Group 8D, Ignition
Systems, or the Front Wheel Drive Car Wiring Dia-
grams Service Manual. Check all wiring for opens or
shorts, and all connectors for being loose or corroded.
BENCH TESTING STARTER SOLENOID
(1) Disconnect field coil wire from field coil termi-
nal (Fig. 16 or 17).
(2) Check for continuity between solenoid terminal
and field coil terminal with a continuity tester. Con-
tinuity should be detected (Fig. 18 or 19).
(3) Check for continuity between solenoid terminal
and solenoid housing (Fig. 20 or 21). Continuity
should be detected. If continuity is detected, solenoid
is good.
(4) If continuity is not detected in either test, sole-
noid has an open circuit and is defective. If equipped
with:
• BOSCH STARTER: Replace the solenoid.
• NIPPONDENSO STARTER: Replace the starter
assembly.
8A - 16
BATTERY/STARTING/CHARGING SYSTEMS DIAGNOSTICS
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Fig. 15 Starter Relay Tests
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BATTERY/STARTING/CHARGING SYSTEMS DIAGNOSTICS
8A - 17
Fig. 16 Field Coil Wire Terminal—Bosch
Fig. 17 Field Coil Wire Terminal—Nippondenso
Fig. 18 Continuity Test Between Solenoid Terminal
and Field Coil Terminal—Bosch
Fig. 19 Continuity Test Between Solenoid Terminal
and Field Coil Terminal—Nippondenso
Fig. 20 Continuity Test Between Solenoid Terminal
and Solenoid Case —Bosch
Fig. 21 Continuity Test Between Solenoid Terminal
and Solenoid Case —Nippondenso
8A - 18
BATTERY/STARTING/CHARGING SYSTEMS DIAGNOSTICS
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