Flow of Diagnosis

1. Verity the vehicle owner's concern by operating the starter system to duplicate the condition.

WARNING:
^ WHEN SERVICING STARTER MOTOR OR PERFORMING OTHER UNDERHOOD WORK IN THE VICINITY OF THE STARTER, BE AWARE THAT THE HEAVY GAUGE BATTERY INPUT LEAD AT THE STARTER SOLENOID IS "ELECTRICALLY HOT" AT ALL TIMES. A PROTECTIVE CAP OR BOOT IS PROVIDED OVER THIS TERMINAL THAT MUST BE REPLACED AFTER SERVICING. BE SURE TO DISCONNECT BATTERY GROUND CABLE BEFORE SERVICING STARTER.
^ WHEN WORKING IN AREA OF THE STARTER MOTOR, BE CAREFUL TO AVOID TOUCHING HOT EXHAUST COMPONENTS.

CAUTION: When disconnecting the plastic hardshell connector of the engine control sensor wiring at the solenoid S-terminal, grasp the plastic connector and pull lead off. DO NOT pull separately on lead wire.

NOTE: A starter motor solenoid terminal cover is provided over this terminal that must be replaced after servicing. Be sure to disconnect battery before servicing starter motor.

2. Inspect to determine if any of the mechanical and electrical concerns apply:

VISUAL INSPECTION CHART

Mechanical
^ Starter motor mounting misaligned.
^ Flywheel ring gear tooth damage.

Electrical
^ Connections loose, damaged or shorting.
^ Damaged battery.

3. If the concerns remain after the inspection, determine the symptoms and go to the Symptom Chart. Symptom Related Diagnostic Procedures