Motor Will Not Operate In Any Switch Position

Figure 1:

(1) Check for a blown fuse in the fuse block.

(a) If fuse is good, proceed to step No.2.

(b) If fuse is defective, replace and check motor operation in all switch positions.

(c) If motor is still inoperative and the fuse does not blow, proceed to step No.2.

(d) If replacement fuse blows, proceed to step No.5.

(2) Place switch in low speed position.

(3) Listen to motor. If you cannot hear it running, proceed to step No.4. If you hear it running, check motor output shaft. If output shaft is not turning, replace motor assembly. If it is turning, drive link to output shaft or linkage is not properly connected. Replace worn parts and/or properly connect drive link to the motor output shaft.

(4) Connect a voltmeter between motor terminal "L" and ground strap. If there is no voltage or very little voltage (less than one volt) present, move negative test lead from the ground strap to battery negative terminal.

(a) If an increase in voltage is noticed, the problem is a bad ground circuit. Make sure the motor mounting is free of paint and that nuts or bolts are tight.

(b) If there is still no indication of voltage, the problem is an open circuit in the wiring harness or wiper switch.

(c) If no noticeable increase (greater than 3 volts) in voltage is observed, the problem is a faulty motor assembly.

(5) Disconnect motor wiring connector and replace fuse.

(a) If fuse does not blow, motor is defective.

(b) If fuse blows, switch or wiring is at fault.