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 (w/ Auto Wiper System)
Symptom Suspected Area Link
Front wipers do not operate at all Perform Active Test (Wiper Motor LO and Wiper Motor HI)

Click here

Read Data List (Wiper Switch LO, Wiper Switch HI, Wiper Switch AUTO, Wiper Switch MIST, Wiper Stop Request, Ignition Switch and Remote Engine Starter Control)

Click here

Proceed to "Wiper Motor Power Source Circuit"

Click here

Front wiper motor and link assembly

Click here

Wire harness or connector (Windshield wiper switch assembly - Front wiper motor and link assembly) -
Windshield wiper switch assembly

Click here

Wiper motor wire

Click here

Front wiper motor and link assembly

Click here

Main body ECU (Multiplex network body ECU)

Click here

Wire harness or connector -
Front wipers do not operate in AUTO Read Data List (Wiper Switch AUTO, Wiper Stop Request, Wiping Mode Signal (Sensor to Wiper) and Wiping Mode Signal (Wiper to Sensor))

Click here

Wire harness or connector (Windshield wiper switch assembly - Front wiper motor and link assembly - Rain sensor) -
Windshield wiper switch assembly

Click here

Rain sensor tape (Check for air bubbles) -
Rain sensor

Click here

Main body ECU (Multiplex network body ECU)

Click here

Front wiper motor and link assembly

Click here

Front wipers do not operate in LO Read Data List (Wiper Switch LO)

Click here

Windshield wiper switch assembly

Click here

Front wiper motor and link assembly

Click here

Front wipers do not operate in HI Read Data List (Wiper Switch HI)

Click here

Front wiper motor and link assembly

Click here

Windshield wiper switch assembly

Click here

Front wiper motor and link assembly

Click here

Front wipers do not operate in MIST Read Data List (Wiper Switch MIST)

Click here

Windshield wiper switch assembly

Click here

Front wiper motor and link assembly

Click here

When the front wipers are operating in AUTO, the rain sensor sensitivity cannot be adjusted by the windshield wiper switch assembly adjustment switch Read Data List (Intermittent Time Volume, Switch AUTO, Vehicle Speed, Wiping Mode Signal (Sensor to Wiper) and Wiping Mode Signal (Wiper to Sensor))

Click here

Windshield wiper switch assembly

Click here

Rain sensor tape (Check for air bubbles) -
Rain sensor

Click here

Front wiper motor and link assembly

Click here

When the front wipers operate in AUTO, the wiper interval does not change according to changes in the vehicle speed Read Data List (Intermittent Time Volume, Vehicle Speed, Wiping Mode Signal (Sensor to Wiper) and Wiping Mode Signal (Wiper to Sensor))

Click here

Rain sensor tape (Check for air bubbles) -
Rain sensor

Click here

Main body ECU (Multiplex network body ECU)

Click here

Front wiper motor and link assembly

Click here

Front wipers do not operate in INT* Read Data List (Wiper Switch INT)

Click here

Windshield wiper switch assembly

Click here

Front wiper motor and link assembly

Click here

When the front wiper switch is in INT, the front wiper intermittent operation interval cannot be adjusted by the windshield wiper switch assembly adjustment switch Read Data List (Intermittent Time Volume)

Click here

Windshield wiper switch assembly

Click here

Front wiper motor and link assembly

Click here

When the front wiper switch is in INT, the front wiper intermittent operation interval does not change according to changes in the vehicle speed Read Data List (Vehicle Speed)

Click here

Main body ECU (Multiplex network body ECU)

Click here

Front wiper motor and link assembly

Click here

Front wipers continuously operate in AUTO Read Data List (Wiper Switch LO, Wiper Switch HI, Wiper Switch AUTO, Wiper Switch MIST and Wiper Switch INT)

Click here

Rain sensor

Click here

Windshield wiper switch assembly

Click here

Front wiper motor and link assembly

Click here

Front wipers continuously operate in LO Read Data List (Wiper Switch LO, Wiper Switch HI, Wiper Switch AUTO, Wiper Switch MIST and Wiper Switch INT)

Click here

Windshield wiper switch assembly

Click here

Front wiper motor and link assembly

Click here

Front wipers continuously operate in HI Read Data List (Wiper Switch LO, Wiper Switch HI, Wiper Switch AUTO, Wiper Switch MIST, Wiper Switch INT and Wiper Switch HI (Line))

Click here

Wire harness or connector (Windshield wiper switch assembly - Front wiper motor and link assembly) -
Windshield wiper switch assembly

Click here

Wiper motor wire

Click here

Front wiper motor and link assembly

Click here

Front wipers continuously operate in INT* Read Data List (Wiper Switch LO, Wiper Switch HI, Wiper Switch AUTO, Wiper Switch MIST and Wiper Switch INT)

Click here

Rain sensor tape (Check for air bubbles) -
Rain sensor

Click here

Windshield wiper switch assembly

Click here

Front wiper motor and link assembly

Click here

When the front wipers are operating in AUTO, the front wipers do not stop operating when the driver door or front passenger door is opened Main body ECU (Multiplex network body ECU)

Click here

Rain sensor

Click here

Front wiper motor and link assembly

Click here

"Wiper System Malfunction Visit Your Dealer" is displayed on the multi-information display Front wiper motor and link assembly

Click here

Main body ECU (Multiplex network body ECU)

Click here

Combination meter assembly

Click here

Front wipers do not move to the service position Read Data List (Wiper Switch MIST and Ignition Switch)

Click here

Front wiper motor and link assembly

Click here

When the setting of the customize setting "Auto Wiper" is changed, the operation of the wiper system does not change. Rain sensor

Click here

Washer motor and pump assembly does not operate Proceed to "Washer Motor Circuit"

Click here

Washer fluid does not flow (Washer motor and pump assembly is normal) Washer fluid -
Washer hose and nozzle -
Front wipers do not operate when the front washer switch is on Front wiper motor and link assembly

Click here

Windshield wiper switch assembly

Click here

When the front wiper switch is turned off, the front wipers do not move to the park position or stop in the wrong position Front wiper motor and link assembly

Click here

Windshield wiper switch assembly

Click here

Front wiper motor and link assembly

Click here


Front Wiper and Washer (w/o Auto Wiper System)
Symptom Suspected Area Link
Front wipers do not operate at all Perform Active Test (Wiper Motor LO and Wiper Motor HI)

Click here

Read Data List (Wiper Switch LO, Wiper Switch HI, Wiper Switch MIST, Wiper Stop Request, Ignition Switch and Remote Engine Starter Control)

Click here

Proceed to "Wiper Motor Power Source Circuit"

Click here

Front wiper motor and link assembly

Click here

Wire harness or connector (Windshield wiper switch assembly - Front wiper motor and link assembly) -
Windshield wiper switch assembly

Click here

Wiper motor wire

Click here

Front wiper motor and link assembly

Click here

Main body ECU (Multiplex network body ECU)

Click here

Wire harness or connector -
Front wipers do not operate in LO Read Data List (Wiper Switch LO)

Click here

Windshield wiper switch assembly

Click here

Front wiper motor and link assembly

Click here

Front wipers do not operate in HI Read Data List (Wiper Switch HI)

Click here

Front wiper motor and link assembly

Click here

Windshield wiper switch assembly

Click here

Front wiper motor and link assembly

Click here

Front wipers do not operate in MIST Read Data List (Wiper Switch MIST)

Click here

Windshield wiper switch assembly

Click here

Front wiper motor and link assembly

Click here

Front wipers do not operate in INT Read Data List (Wiper Switch INT)

Click here

Windshield wiper switch assembly

Click here

Front wiper motor and link assembly

Click here

When the front wiper switch is in INT, the front wiper intermittent operation interval cannot be adjusted by the windshield wiper switch assembly adjustment switch* Read Data List (Intermittent Time Volume)

Click here

Windshield wiper switch assembly

Click here

Front wiper motor and link assembly

Click here

When the front wiper switch is in INT, the front wiper intermittent operation interval does not change according to changes in the vehicle speed* Read Data List (Vehicle Speed)

Click here

Main body ECU (Multiplex network body ECU)

Click here

Front wiper motor and link assembly

Click here

Front wipers continuously operate in LO Read Data List (Wiper Switch LO, Wiper Switch HI, Wiper Switch MIST and Wiper Switch INT)

Click here

Windshield wiper switch assembly

Click here

Front wiper motor and link assembly

Click here

Front wipers continuously operate in HI Read Data List (Wiper Switch LO, Wiper Switch HI, Wiper Switch MIST, Wiper Switch INT and Wiper Switch HI (Line))

Click here

Wire harness or connector (Windshield wiper switch assembly - Front wiper motor and link assembly) -
Windshield wiper switch assembly

Click here

Wiper motor wire

Click here

Front wiper motor and link assembly

Click here

Front wipers continuously operate in INT Read Data List (Wiper Switch LO, Wiper Switch HI, Wiper Switch MIST and Wiper Switch INT)

Click here

Windshield wiper switch assembly

Click here

Front wiper motor and link assembly

Click here

"Wiper System Malfunction Visit Your Dealer" is displayed on the multi-information display Front wiper motor and link assembly

Click here

Main body ECU (Multiplex network body ECU)

Click here

Combination meter assembly

Click here

Front wipers do not move to the service position Read Data List (Wiper Switch MIST and Ignition Switch)

Click here

Front wiper motor and link assembly

Click here

Washer motor and pump assembly does not operate Proceed to "Washer motor circuit"

Click here

Washer fluid does not flow (Washer motor and pump assembly is normal) Washer fluid -
Washer hose and nozzle -
Front wipers do not operate when the front washer switch is on Front wiper motor and link assembly

Click here

Windshield wiper switch assembly

Click here

When the front wiper switch is turned off, the front wipers do not move to the park position or stop in the wrong position Front wiper motor and link assembly

Click here

Windshield wiper switch assembly

Click here

Front wiper motor and link assembly

Click here

Rear Wiper and Washer
Symptom Suspected Area Link
Rear wiper does not operate at all Windshield wiper switch assembly

Click here

Rear wiper motor and bracket assembly

Click here

Wire harness or connector (Windshield wiper switch assembly - Rear wiper motor and bracket assembly) -
Rear wiper does not operate in INT Windshield wiper switch assembly

Click here

Rear wiper motor and bracket assembly

Click here

Wire harness or connector (Windshield wiper switch assembly - Rear wiper motor and bracket assembly) -
Rear wiper does not operate in LO Windshield wiper switch assembly

Click here

Rear wiper motor and bracket assembly

Click here

Wire harness or connector (Windshield wiper switch assembly - Rear wiper motor and bracket assembly) -
Rear wiper continuously operate in INT Windshield wiper switch assembly

Click here

Rear wiper motor and bracket assembly

Click here

Wire harness or connector (Windshield wiper switch assembly - Rear wiper motor and bracket assembly) -
Rear wiper continuously operates in LO Windshield wiper switch assembly

Click here

Rear wiper motor and bracket assembly

Click here

Wire harness or connector (Windshield wiper switch assembly - Rear wiper motor and bracket assembly) -
Washer motor and pump assembly does not operate Proceed to "Washer motor circuit"

Click here

Windshield wiper switch assembly

Click here

Washer motor and pump assembly

Click here

Washer fluid does not flow (Washer motor and pump assembly is normal) Washer fluid -
Washer hose and nozzle -
Rear wiper does not operate when the rear washer switch is on Windshield wiper switch assembly

Click here

Wire harness or connector (Windshield wiper switch assembly - Rear wiper motor and bracket assembly) -
When the rear wiper switch is turned off, the rear wiper does not stop (park) or stops (parks) in the wrong position Rear wiper motor and bracket assembly

Click here

Windshield wiper switch assembly

Click here

Rear wiper motor and bracket assembly

Click here

Headlight Cleaner System (w/ Headlight Cleaner System)
Symptom Suspected Area Link
Headlight cleaner system does not operate when the front washer switch is operated (Washer motor and pump assembly is normal) Proceed to "Headlight Cleaner Motor and Relay Circuit"

Click here

Washer Fluid Level Warning System
Symptom Suspected Area Link
Washer fluid level warning message on the multi-information display does not operate Washer fluid -
Proceed to "Washer Fluid Level Warning Switch Circuit"

Click here

Washer Nozzle Heater System (w/ Washer Nozzle Heater)
Symptom Suspected Area Link
Washer nozzle heater does not operate Washer nozzle heater circuit

Click here