S10/T10 P/U 2WD V6-4.3L VIN W (1997)
Wiper Motor: Component Tests and General Diagnostics
Diagnostic Chart
Wiper Motor Bench Test
Fig. 3 Permanent Magnet Type Windshield Wiper Motor W/Pulse Wipers
WIPER MOTOR TEST
There are two ways to test the wiper motor. The first way is to set up a power supply and resistance framework as shown in the Image. This set of
voltages and resistances when applied to the different pins of the motor will cause the motor to run in its operating modes.
The second way to test the motor is by using J34660-A. Windshield wiper tester J34660-A is set up to duplicate the parameters in the Image. By
plugging the proper adapter into the motor, all of the modes of the wiper motor operation can be checked.
After choosing one of the above systems, test the motor. If a problem with the motor is discovered, replace the circuit board with a known good board.
If the motor does not operate properly, repair or replace the motor.
