Motor Current Draw Test

NOTE: The windshield wiper motor tests are performed with the wiper motor removed from the vehicle and linkage disconnected.

Fig. 26 Wiper Motor Current Draw Test:

1. Connect the positive (red) lead from the Rotunda Starting and Charging Tester 078-00005 or equivalent to the common (C) terminal on the motor connector.
2. Connect the green lead from the tester to the battery positive post.
3. Connect a jumper wire from the battery negative post to the low speed terminal on the motor connector and read the current draw.
4. Move the jumper wire from the low speed terminal to the high speed terminal and read the high speed current draw.
5. In either case, the current draw should not exceed 3.5 amperes. If the current draw does exceed 3.5 amperes, check the output arm and windlatch mechanism for binding or damage before replacing the motor.