On-Vehicle Testing: Notes

The starter is required to produce a large torque and high rotating speed, but these starter characteristics vary with the capacity of the battery. It is therefore important to use a battery with the specified capacity whenever testing the starter.

The starter should be checked for the following 3 items:

• No-load test: Measure the maximum rotating speed and current under a no-load state.
• Load test: Measure the magnitude of current needed to generate the specified torque and rotating speed.
• Stall test: Measure the torque and current when the armature id locked.