RM38N0EC _59 Vehicle Exterior _111846 WIPER / WASHER _0505202 WIPER AND WASHER SYSTEM T

WIPER / WASHER  WIPER AND WASHER SYSTEM  PROBLEM SYMPTOMS TABLE  


NOTICE:

Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.


HINT:
·

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.



Front Wiper System (w/ Auto Wiper System)
Symptom Suspected Area Link
Front wipers do not operate at all Proceed to "Wiper and Washer Switch Circuit" Click here
Proceed to "Front Wiper Motor Circuit" Click here
Main body ECU (Multiplex network body ECU) Click here
Windshield wiper relay assembly Click here
Front wipers do not operate in AUTO Check customize parameters (Auto wiper) Click here
Rain sensor tape (Check for air bubbles) -
Proceed to "Wiper and Washer Switch Circuit" Click here
Rain sensor Click here
Front wipers do not operate in LO Proceed to "Wiper and Washer Switch Circuit" Click here
Proceed to "Front Wiper Motor Circuit" Click here
Windshield wiper relay assembly Click here
Front wipers do not operate in HI Proceed to "Wiper and Washer Switch Circuit" Click here
Proceed to "Front Wiper Motor Circuit" Click here
Windshield wiper relay assembly Click here
Front wipers do not operate in INT* Proceed to "Wiper and Washer Switch Circuit" Click here
Front wipers do not operate in MIST Proceed to "Wiper and Washer Switch Circuit" Click here
Windshield wiper relay assembly Click here
When the front wipers are operating in AUTO, the rain sensor sensitivity cannot be adjusted by the auto sensitivity adjustment switch (wiping interval does not change) Proceed to "Wiper and Washer Switch Circuit" Click here
When the front wipers are operating in AUTO, the wiper interval does not change according to changes in the vehicle speed Rain sensor Click here
Main body ECU (Multiplex network body ECU) Click here
When the front wipers are operating in INT, the front wiper intermittent operation interval cannot be adjusted by the auto sensitivity adjustment switch (wiping interval does not change)* Proceed to "Wiper and Washer Switch Circuit" Click here
When the front wipers are operating in INT, the front wiper intermittent operation interval does not change according to changes in the vehicle speed* Main body ECU (Multiplex network body ECU) Click here
Front wipers continuously operate in AUTO Proceed to "Wiper and Washer Switch Circuit" Click here
Front wipers continuously operate in LO Proceed to "Wiper and Washer Switch Circuit" Click here
Front wipers continuously operate in HI Proceed to "Wiper and Washer Switch Circuit" Click here
Front wipers continuously operate in INT* Proceed to "Wiper and Washer Switch Circuit" Click here
When the front wipers are operating in AUTO, they do not stop operating when the driver door or front passenger door is opened Proceed to "Front Door Courtesy Switch Circuit" Click here
Main body ECU (Multiplex network body ECU) Click here
When the customize setting "Auto Wiper" is changed, the operation of the wiper system does not change Rain sensor Click here
When the front wiper switch is turned off, the front wipers stop in the wrong position Proceed to "Front Wiper Motor Circuit" Click here
Check the automatic stop (park) position Click here
Windshield wiper relay assembly Click here

*: When the customize setting "Auto Wiper" is set to "Not Avl".


Front Wiper System (w/o Auto Wiper System)
Symptom Suspected Area Link
Front wipers do not operate at all Proceed to "Wiper and Washer Switch Circuit" Click here
Proceed to "Front Wiper Motor Circuit" Click here
Main body ECU (Multiplex network body ECU) Click here
Windshield wiper relay assembly Click here
Front wipers do not operate in LO Proceed to "Wiper and Washer Switch Circuit" Click here
Proceed to "Front Wiper Motor Circuit" Click here
Windshield wiper relay assembly Click here
Front wipers do not operate in HI Proceed to "Wiper and Washer Switch Circuit" Click here
Proceed to "Front Wiper Motor Circuit" Click here
Windshield wiper relay assembly Click here
Front wipers do not operate in INT Proceed to "Wiper and Washer Switch Circuit" Click here
Proceed to "Front Wiper Motor Circuit" Click here
Windshield wiper relay assembly Click here
Front wipers do not operate in MIST Proceed to "Wiper and Washer Switch Circuit" Click here
Windshield wiper relay assembly Click here
When the front wiper switch is in INT, the front wiper intermittent operation interval cannot be adjusted by the intermittent time adjustment switch Proceed to "Wiper and Washer Switch Circuit" Click here
Main body ECU (Multiplex network body ECU) Click here
When the front wipers are operating in INT, the front wiper intermittent operation interval does not change according to changes in the vehicle speed Main body ECU (Multiplex network body ECU) Click here
Front wipers continuously operate in LO Proceed to "Wiper and Washer Switch Circuit" Click here
Windshield wiper relay assembly Click here
Front wipers continuously operate in HI Proceed to "Wiper and Washer Switch Circuit" Click here
Windshield wiper relay assembly Click here
Front wipers continuously operate in INT Proceed to "Wiper and Washer Switch Circuit" Click here
Front wipers do not move to the service position (wiper operation is normal) Main body ECU (Multiplex network body ECU) 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 Proceed to "Front Wiper Motor Circuit" Click here
Check the automatic stop (park) position Click here
Windshield wiper relay assembly Click here

Rear Wiper System
Symptom Suspected Area Link
Rear wiper does not operate at all Proceed to "Wiper and Washer Switch Circuit" Click here
Proceed to "Rear Wiper Motor Circuit" Click here
Main body ECU (Multiplex network body ECU) Click here
Rear wiper does not operate in LO Proceed to "Wiper and Washer Switch Circuit" Click here
Proceed to "Rear Wiper Motor Circuit" Click here
Main body ECU (Multiplex network body ECU) Click here
Rear wiper does not operate in INT Proceed to "Wiper and Washer Switch Circuit" Click here
Proceed to "Rear Wiper Motor Circuit" Click here
Main body ECU (Multiplex network body ECU) Click here
Rear wiper continuously operates in LO Proceed to "Wiper and Washer Switch Circuit" Click here
Main body ECU (Multiplex network body ECU) Click here
Rear wiper continuously operates in INT Proceed to "Wiper and Washer Switch Circuit" Click here
Main body ECU (Multiplex network body ECU) Click here
When the back door is opened, the rear wiper does not stop operating Check customize settings Click here
Main body ECU (Multiplex network body ECU) Click here
When the rear washer is operated, the rear wiper does not operate Check customize settings Click here
When driving in reverse, the rear wiper does not operate Check customize settings Click here
When the rear wiper switch is turned off, the rear wiper does not move to the park position or stops in the wrong position Proceed to "Rear Wiper Motor Circuit" Click here
Check the automatic stop (park) position Click here

Washer System
Symptom Suspected Area Link
Windshield washer motor and pump assembly does not operate Proceed to "Wiper and Washer Switch Circuit" Click here
Proceed to "Washer Motor Circuit" Click here
Windshield wiper relay assembly Click here
Front washers do not operate Proceed to "Wiper and Washer Switch Circuit" Click here
Windshield wiper relay assembly Click here
Rear washer does not operate Proceed to "Wiper and Washer Switch Circuit" Click here
Windshield wiper relay assembly Click here
Washer fluid does not flow (Windshield washer motor and pump assembly is normal) Washer fluid -
Washer hose and nozzle -