Power Window Motor: Testing and Inspection

Test Procedure






To test the current draw of a power window motor, remove the motor and drive assembly from the vehicle.


1. Connect an external power source (power-pac or a fully charged battery) to the motor with an ammeter such as Rotunda Digital Volt Ohm Meter 007-00001 or equivalent, in series.
2. Operate the motor and observe the current draw.
The current draw for the no-load test should not exceed 5 amps at 12.8 volts and should not fluctuate.
Reversal of the motor wire connections will reverse the direction of motor rotation.
Replace the motor if the current draw exceeds specification.