Wiper troubleshooting

[cyclezen]

Thought I'd post this for reference, in case it comes in handy for someone.

Problem: Motor doesn't stop when switch is turned off
Possible cause: defective switch; defective wiper motor

Problem: Blades stop anywhere when switch is turned off
Possible cause: Open circuit between switch and motor; defective switch; defective wiper motor

Problem: Motor runs slowly in all speeds
Possible cause: wiper linkage damaged or binding; defective wiper motor

Problem: Motor runs in high but not low; motor runs in low but not high
Possible cause: Open circuit between switch and motor; defective wiper motor

Problem: Wipers won't come on in delay mode
Possible cause: Open circuit between switch and motor; defective governor

Problem: Wipers won't stop running in delay mode
Possible cause: Open circuit between switch and motor; poor ground at wiper motor; loose or damaged connector at governor

Problem: motor will not run
Possible cause: Open circuit between switch and motor;defective switch; poor ground at wiper motor; defective wiper motor