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Home >> Toyota >> 2017 >> Sienna LE, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Wiper/Washer Systems >> Wiper System / Washer System (W/ Rain Sensor) - Diagnostics & Circuit Tests >> WIPER AND WASHER SYSTEM(w/ Rain Sensor) >> Problem Symptoms Table [12/2015 - ] >> Problem Symptoms Table [12/2015 - ]
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Problem Symptoms Table [12/2015 - ]

HINT: 

Use the table below to help determine the cause of the problem symptom. 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

Symptom Suspected Area See reference
Front wipers and washer do not operate WIP fuse -
Windshield wiper relay assembly Refer to REMOVAL [12/2015 - ]
Harness or connector -
Front wipers do not operate at all Power source circuit Refer to Power Source Circuit [12/2015 - ] 
Front wiper motor circuit Refer to Front Wiper Motor Circuit [12/2015 - ] 
Windshield wiper relay assembly Refer to REMOVAL [12/2015 - ]
Front wipers do not operate in AUTO Rain sensor tape*1 -
Wiper and washer switch circuit Refer to Wiper and Washer Switch Circuit [12/2015 - ] 
Rain sensor circuit Refer to Rain Sensor Circuit [12/2015 - ] 
Speed signal circuit Refer to Speed Signal Circuit [12/2015 - ] 
Windshield wiper relay assembly Refer to REMOVAL [12/2015 - ]
Front wipers do not operate in LO Wiper and washer switch circuit Refer to Wiper and Washer Switch Circuit [12/2015 - ] 
Front wiper motor circuit Refer to Front Wiper Motor Circuit [12/2015 - ] 
Windshield wiper relay assembly Refer to REMOVAL [12/2015 - ]
Front wipers do not operate in HI Wiper and washer switch circuit Refer to Wiper and Washer Switch Circuit [12/2015 - ] 
Front wiper motor circuit Refer to Front Wiper Motor Circuit [12/2015 - ] 
Windshield wiper relay assembly Refer to REMOVAL [12/2015 - ]
Front washer motor does not operate Windshield washer motor and pump assembly Refer to INSPECTION [12/2015 - ]
Windshield wiper switch assembly Refer to INSPECTION [12/2015 - ]
Harness or connector -
Washer fluid does not flow Washer hose and nozzle -
Front wipers do not operate when front washer switch is ON Wiper and washer switch circuit Refer to Wiper and Washer Switch Circuit [12/2015 - ] 
Windshield wiper relay assembly Refer to REMOVAL [12/2015 - ]
When the front wiper switch is OFF, the wiper blades do not park or park in the wrong position Front wiper arm installation position -
Windshield wiper motor assembly Refer to INSPECTION [12/2015 - ]

HINT: 

*1: Before inspecting the rain sensor, first check if the rain sensor tape is correctly installed.

REAR WIPER AND WASHER

Symptom Suspected Area See reference
Rear wiper and washer do not operate WASHER RR fuse -
Windshield wiper switch assembly Refer to INSPECTION [12/2015 - ]
Harness or connector -
Rear wiper does not operate in LO or HI Windshield wiper switch assembly Refer to INSPECTION [12/2015 - ]
Rear wiper motor assembly Refer to INSPECTION [12/2015 - ]
Harness or connector -
Rear washer motor does not operate Windshield wiper switch assembly Refer to INSPECTION [12/2015 - ]
Rear washer motor assembly Refer to INSPECTION [12/2015 - ]
Harness or connector -
Washer fluid does not flow Washer hose and nozzle -
When the rear wiper switch is OFF, the wiper blade does not park or parks in the wrong position Rear wiper arm installation position -
Rear wiper motor assembly Refer to INSPECTION [12/2015 - ]
WASHER FLUID LEVEL WARNING SYSTEM

Symptom Suspected Area See reference
Washer fluid level warning system does not operate Washer fluid level warning switch Refer to INSPECTION [12/2015 - ]
Combination meter assembly Refer to PROBLEM SYMPTOMS TABLE [12/2015 - 08/2016] Refer to PROBLEM SYMPTOMS TABLE [08/2016 - 11/2017] Refer to PROBLEM SYMPTOMS TABLE [11/2017 - ]