WIPER AND WASHER SYSTEM PROBLEM SYMPTOMS TABLE

Tech Tips

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

Front Wiper and Washer System
Symptom	Suspected Area	See page
Front wipers do not operate at all	Windshield wiper switch assembly	Click here
	Windshield wiper motor assembly	Click here
	Windshield wiper relay assembly	Click here
	Harness or connector	-
Front wipers do not operate in AUTO	LIN communication system	Click here
	Windshield wiper switch assembly	Click here
	Rain sensor tape (Make sure there are no air bubbles.)	-
	Rain sensor	Click here
	Windshield wiper relay assembly	Click here
	Harness or connector	-
When the front wiper switch is in AUTO, the rain sensor sensitivity cannot be adjusted by the windshield wiper switch assembly adjusting ring	Windshield glass (Rain sensor sensing portion) is dirty	-
	Rain sensor tape (Make sure there are no air bubbles.)	-
	Rain sensor	Click here
	Windshield wiper switch assembly	Click here
	Windshield wiper relay assembly	Click here
	Harness or connector	-
When the front wipers operate in AUTO, the wiping interval does not change according to changes in the vehicle speed	Meter / gauge system	Click here
	Windshield wiper switch assembly	Click here
	Windshield wiper relay assembly	Click here
	Harness or connector	-
Front wipers do not operate in HI	Windshield wiper switch assembly	Click here
	Windshield wiper motor assembly	Click here
	Windshield wiper relay assembly	Click here
	Harness or connector	-
Front wipers do not operate in LO or MIST	Windshield wiper switch assembly	Click here
	Windshield wiper motor assembly	Click here
	Windshield wiper relay assembly	Click here
	Harness or connector	-
Front wipers do not operate when the washer fluid is sprayed with the washer switch on	Windshield wiper switch assembly	Click here
	Windshield wiper relay assembly	Click here
	Harness or connector	-
Only front washer does not operate	Windshield wiper switch assembly	Click here
	Windshield washer motor and pump assembly	Click here
	Windshield wiper relay assembly	Click here
	Harness or connector	-
Washer fluid does not flow (Washer motor is normal)	Washer fluid	-
Washer fluid does not flow (Washer motor is normal)	Washer hose and nozzle	-
Front wiper arms do not return to their original positions when wiper switch is turned off	Front wiper arm installation position	Click here
	Windshield wiper switch assembly	Click here
	Windshield wiper motor assembly	Click here
	Harness or connector	-

Rear Wiper and Washer System
Symptom	Suspected Area	See page
Rear wiper does not operate at all	Wiper and washer switch circuit	Click here
	Rear wiper motor assembly	Click here
	No. 2 multiplex network body ECU	Click here
	Harness or connector	-
Rear wiper does not operate in ON or INT	Wiper and washer switch circuit	Click here
	Rear wiper motor assembly	Click here
	No. 2 multiplex network body ECU	Click here
	Harness or connector	-
Rear wiper does not operate when the washer fluid is sprayed with the rear washer switch on	Wiper and washer switch circuit	Click here
	Rear wiper motor assembly	Click here
	No. 2 multiplex network body ECU	Click here
	Harness or connector	-
Only rear washer does not operate	Wiper and washer switch circuit	Click here
	Rear wiper motor assembly	Click here
	No. 2 multiplex network body ECU	Click here
	Harness or connector	-
Washer fluid does not flow (Washer motor is normal)	Washer fluid	-
Washer fluid does not flow (Washer motor is normal)	Washer hose and nozzle	-
Rear wiper arm does not return to its original position when wiper switch is turned off	Wiper and washer switch circuit	Click here
	Rear wiper motor assembly	Click here
	No. 2 multiplex network body ECU	Click here
	Harness or connector	-

Headlight Cleaner System
Symptom	Suspected Area	See page
Headlight cleaner system does not operate at all	Headlight cleaner switch circuit	Click here
	Headlight cleaner motor and relay circuit	Click here
	Headlight cleaner control relay	-

Washer Nozzle Heater System (w/ Washer Nozzle Heater System)
Symptom	Suspected Area	See page
Washer nozzle heater does not operate	Washer nozzle heater circuit	Click here