Starter No Load Test

TOOLS REQUIRED
^ J 35590 Current Clamp
^ J 39200 Digital Multi meter

NOTE: Never operate the starter motor more than 15 seconds at a time without pausing in order to allow it to cool for at least 2 minutes. Overheating will damage the starter motor.

IMPORTANT: Verify that the battery is in good condition. Refer to Battery Load Test. Battery Load Test

1. Disable the fuel system. Refer to Computers and Control Systems . Computers and Control Systems




2. Calculate the current draw.
2.1. Select the 200 amps or the 2000 amp scale on the J 35590.
2.2. Zero the current clamp.
2.3. Clamp the current clamp to the battery negative cable.
2.4. Crank the engine and observe the meter readings. The reading should be 330-360 amps.
^ If the amperage is over 360, an internal starter failure may be the cause.
^ If the amperage is under 330, a battery cable or connection may be the cause.