WIPER AND WASHER SYSTEM PROBLEM SYMPTOMS TABLE

Note

If the main body ECU (multiplex network body ECU) is replaced, refer to Service Bulletin.

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.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Wiper and Washer (w/o Rain Sensor)
Symptom	Suspected Area	See page
Wipers do not operate at all	Windshield wiper switch assembly	Click here
	Windshield wiper motor assembly	Click here
	Harness or connector	-
Wipers do not operate in INT	Windshield wiper switch assembly	Click here
	Windshield wiper motor assembly	Click here
	Harness or connector	-
Wipers do not operate in LO or MIST	Windshield wiper switch assembly	Click here
	Windshield wiper motor assembly	Click here
	Harness or connector	-
Wipers do not operate in HI	Windshield wiper switch assembly	Click here
	Windshield wiper motor assembly	Click here
	Harness or connector	-
When the wiper switch is in INT position, the wiper operation timing does not change	CAN communication system (for LHD)	Click here
	CAN communication system (for RHD)	Click here
	Spiral with sensor cable sub-assembly	Click here
	Brake actuator assembly	Click here
	Windshield wiper switch assembly	Click here
	Harness or connector	-
Washer does not operate	Washer fluid	-
	Washer hose and/or washer nozzle sub-assembly	Click here
	Windshield wiper switch assembly	Click here
	Windshield washer motor and pump assembly	Click here
	Harness or connector	-
"Low Washer Fluid" is displayed on the multi-information display	Washer fluid	-
	Level warning switch assembly	Click here
	Combination meter assembly	Click here
	Harness or connector	-
Wipers do not operate when the washer switch is on	Windshield wiper switch assembly	Click here
Wipers do not operate when the washer switch is on	Harness or connector	-
When the wiper switch is off, the wiper blades do not park or park in the wrong position	Windshield wiper motor assembly (wiper arm installation position)	Click here
	Windshield wiper motor assembly	Click here
	Harness or connector	-

Wiper and Washer (w/ Rain Sensor)
Symptom	Suspected Area	See page
Front wipers do not operate at all	Windshield wiper switch assembly	Click here
	Windshield wiper motor assembly	Click here
	Harness or connector	-
Wipers do not operate in LO or MIST	Windshield wiper switch assembly	Click here
	Windshield wiper motor assembly	Click here
	Harness or connector	-
Wipers do not operate in HI	Windshield wiper switch assembly	Click here
	Windshield wiper motor assembly	Click here
	Harness or connector	-
Wipers do not operate in AUTO	Windshield wiper switch assembly	Click here
	LIN communication system	Click here
	Map light assembly	Click here
	Rain sensor	Click here
	Harness or connector	-
When the AUTO wiper ON/OFF switch is ON, the rain sensor sensitivity and wiper operation timing could not be adjusted by the auto sensitivity adjustment	Windshield wiper switch assembly	Click here
	LIN communication system	Click here
	CAN communication system (for LHD)	Click here
	CAN communication system (for RHD)	Click here
	Spiral with sensor cable sub-assembly	Click here
	Brake actuator assembly	Click here
	Harness or connector	-
When the AUTO wiper ON/OFF switch is ON, auto wiper indicator does not illuminate	Windshield wiper switch assembly	Click here
	Main body ECU (multiplex network body ECU)	Click here
	Cowl side junction block LH	Click here
	Lighting system	Click here
	Harness or connector	-
Washer does not operate	Washer fluid	-
	Washer hose and/or washer nozzle sub-assembly	Click here
	Windshield wiper switch assembly	Click here
	Windshield washer motor and pump assembly	Click here
	Harness or connector	-
"Low Washer Fluid" is displayed on the multi-information display	Washer fluid	-
	Level warning switch assembly	Click here
	Combination meter assembly	Click here
	Harness or connector	-
Wipers do not operate when the washer switch is on	Windshield wiper switch assembly	Click here
Wipers do not operate when the washer switch is on	Harness or connector	-
When the wiper switch is off, the wiper blades do not park or park in the wrong position	Windshield wiper motor assembly (wiper arm installation position)	Click here
	Windshield wiper motor assembly	Click here
	Harness or connector	-

Headlight Cleaner (w/ Headlight Cleaner)
Symptom	Suspected Area	See page
Headlight cleaner system does not operate when the headlight cleaner switch is operated	Headlight cleaner hose and/or headlight cleaner washer nozzle cover	-
	Integration control and panel assembly	Click here
	Headlight cleaner control relay	Click here
	Headlight cleaner motor and pump assembly	Click here
	Headlight washer actuator sub-assembly LH and/or RH	Click here
	Main body ECU (multiplex network body ECU)	Click here
	Cowl side junction block LH	Click here
	Harness or connector	-
Headlight cleaner system does not operate when the front washer switch is first operated	Windshield wiper switch assembly	Click here
	Headlight cleaner control relay	Click here
	Harness or connector	-