Symptom Related Diagnostic Procedures

Condition(s):
The engine does not crank
Possible Source(s):
- Battery.
- Starter motor.
- Relay.
- Ignition switch.
- Transmission range switch (automatic transmission).
- Clutch switch; manual transmission (USA only).

Action(s) to take:
- GO to Pinpoint Test A. A : the Engine Does Not Crank

Engine cranks slowly
Possible Source(s):
- Battery.
- Circuit.
- Starter motor.

Action(s) to take:
- GO to Pinpoint Test B. B : the Engine Cranks Slowly

Unusual starter motor noise
Possible Source(s):
- Starter motor.
- Flywheel ring gear.

Action(s) to take:
- INSPECT flywheel ring gear. INSPECT starter motor for alignment, cracked case. Make sure the mounting bolts are tightened. If necessary, INSTALL a new starter motor. Service and Repair

The starter spins but the engine does not crank
Possible Source(s):
- Starter motor.
- Flywheel ring gear.

Action(s) to take:
- INSPECT the flywheel ring gear for missing teeth. INSPECT starter motor pinion gear for missing teeth. CHECK starter motor for correct mounting. If concern persists, INSTALL a new starter motor. Service and Repair