Perform the following checks:
| • | Battery -- Load test the battery. Refer to Battery Not Operating Properly . | 
| • | Wiring -- Inspect the wiring for damage. Inspect all connections to the starter motor, solenoid, battery, and all ground connections. Clean and tighten the connections as required. | 
| • | Engine -- Make sure the engine is not seized. | 
If the battery, the wiring and the engine are functioning properly and the engine continues to crank slowly, repair or replace the starter motor. Refer to Starter Motor Replacement .