Pinpoint Test D: The Engine Cranks Slowly

WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.

D1 CHECK THE BATTERY
- Check the battery condition and charge. Refer to BATTERY, MOUNTING AND CABLES article.
- Is the battery OK?
1. YES : Go to D2.
2. NO : CHARGE or INSTALL a new battery as required. TEST the system for normal operation.
D2 CHECK THE VOLTAGE TO THE STARTER
- Key in OFF position.
- Measure the voltage between starter motor solenoid positive terminal and ground.
  
  Fig 1: Checking Voltage To Starter
  Courtesy of FORD MOTOR CO.
- Is the voltage 10 volts or greater?
1. YES : Go to D3.
2. NO : REPAIR circuit 2037 (RD). CLEAN and TIGHTEN the connections at the battery terminals. TEST the system for normal operation.
D3 CHECK MOTOR GROUND CIRCUIT
- Carry out the Motor Ground Circuit Test. Refer to the component tests in this article.
- Is the ground OK?
1. YES : INSTALL a new starter motor. TEST the system for normal operation.
2. NO : REPAIR the ground circuit as necessary. TEST the system for normal operation.