SERVICE MANUAL
TROUBLE SHOOTING (ELECTRIC)
PROBLEM
PROBABLE CAUSE
SOLUTION
Wiper will not operate.
1.
No voltage to wiper motor
1.
Check for open circuit or
blown fuse
2.
Binds in wiper arm,
2.
Eliminate binds.
shafts or linkage.
3.
Link rod loose from
3.
Secure rod end clip.
drive lever.
4.
Faulty switch.
4.
Replace switch.
5.
Faulty motor assembly.
5.
Replace motor.
Damaged gear teeth.
1.
Wiper blades striking
1.
Adjust wiper arm park
windshield molding
position.
during operation.
2.
Binding in connecting
2.
Correct linkage.
links.
3.
Operator stopping blades
3.
Caution operator.
manually when wiper is
operating.
4.
Drive arm not held when
4.
Hold drive arm in vise or by
drive arm nut is tightened
hand when tightening nut
Wiper will not shut off.
Faulty switch.
Replace switch.
Wiper continually shutting off.
1.
Binding condition in wiper arm shafts,
1.
Eliminate binds.
connecting links or drive gear and shaft.
2.
Faulty harness connections.
2.
Correct wiring harness
connectors and terminals.
3.
Faulty motor assembly.
3.
Replace motor.
Wiper operates at one
1.
Faulty switch.
1.
Replace switch.
speed only.
2.
Faulty connection.
2.
Correct wiring.
Wiper motor speed excessive
Faulty motor assembly.
Replace motor.
under light load but stalls
under heavy load.
Wiper motor noisy.
Faulty motor assembly.
Replace motor.
CTS-4061 - Chapter I
PRINTED IN UNITED STATES OF AMERICA
Page 7
