Checking Starter Operation

Procedure

1. If the starter does not turn, first check the battery per ELECT-15. If the battery is confirmed good, test the starter as follows:

Caution: Testing the starter while it is installed in the vehicle is not recommended. The engine will rotate during the test. Do not apply a jumper to the starter terminals while you are positioned beneath the vehicle.

a. Raise the vehicle on jack stands. Confirm the transmission is in Neutral (not in any gear). b. Make up two heavy-gauge jumper wires (minimum 12 AWG) approximately 3 feet in length. c. Connect one jumper to the small terminal on the starter solenoid — this is the signal terminal, not the large terminal that connects to the starter motor. d. Connect the other jumper to the large positive terminal on the starter. Ensure the free end of this jumper does not contact any metal on the car — this wire is connected directly to the battery positive. e. Move clear of the vehicle. Momentarily touch the ends of the two jumpers together to test the starter. f. If the starter operates normally, the problem is in the ignition switch or wiring between the ignition switch and the starter solenoid — see ELECT-17. g. If the starter does not operate, the starter itself is faulty. Remove the starter and have it tested at a service center or auto parts store. The most common cause of failure is the solenoid (also called the Bendix). The solenoid can be replaced separately, though the cost difference between a new solenoid and a complete replacement starter is typically small.