RM38T0EC _59 Vehicle Exterior _114146 WIPER / WASHER _0510034 WIPER AND WASHER SYSTEM J

WIPER / WASHER  WIPER AND WASHER SYSTEM  Washer Motor Circuit  


DESCRIPTION

When the windshield washer motor and pump assembly receives signals from the windshield wiper switch assembly, it operates to spray washer fluid from the washer nozzle sub-assemblies.

WIRING DIAGRAM

E434517E09
5.406,3.615 6.021,3.813 0.615,0.198 10 false CXPI 3.688,4.135 4.823,4.854 1.135,0.719 10 false Power Distribution Box Assembly 5.302,4.375 6.938,4.854 1.635,0.479 10 false Main Body ECU (Multiplex Network Body ECU) 5.063,3.625 5.677,3.823 0.615,0.198 10 false MB 3.302,3.615 3.917,3.813 0.615,0.198 10 false 8E 5.073,3.396 5.688,3.594 0.615,0.198 10 false 22 3.344,3.406 3.958,3.604 0.615,0.198 10 false 5 1.74,1.208 2.354,1.406 0.615,0.198 10 false A55 1.729,2.802 2.344,3 0.615,0.198 10 false A55 1.729,1.917 2.344,2.115 0.615,0.198 10 false A55 1.719,3.625 2.333,3.823 0.615,0.198 10 false A56 1.719,0.385 2.333,0.583 0.615,0.198 10 false A55 1.208,0.385 1.823,0.583 0.615,0.198 10 false IGWS 1.208,3.625 1.823,3.823 0.615,0.198 10 false MPX1 1.24,1.208 1.854,1.406 0.615,0.198 10 false +WR 1.271,1.917 1.885,2.115 0.615,0.198 10 false -WR 1.25,2.802 1.865,3 0.615,0.198 10 false EWS 0.844,5.323 2.573,5.573 1.729,0.25 10 false : CXPI Communication Line 1.802,2.583 2.417,2.781 0.615,0.198 10 false 5 1.802,1.698 2.417,1.896 0.615,0.198 10 false 7 1.792,0.99 2.406,1.188 0.615,0.198 10 false 1 1.802,3.406 2.073,3.583 0.271,0.177 10 false 4 1.792,0.177 2.406,0.375 0.615,0.198 10 false 6 2.417,0.521 3.073,0.719 0.656,0.198 10 false WASHER 3.865,1.802 4.479,2 0.615,0.198 10 false 1 2.677,1.802 3.292,2 0.615,0.198 10 false 2 3.667,1.802 4.281,2 0.615,0.198 10 false B 2.844,1.802 3.458,2 0.615,0.198 10 false SW 3.49,0.396 5.031,0.698 1.542,0.302 10 false from IGP-MAIN Relay 0.531,4.531 1.646,5.052 1.115,0.521 10 false Windshield Wiper Relay Assembly 2.594,2.177 3.208,2.375 0.615,0.198 10 false A35 2.583,2.344 4.188,2.833 1.604,0.49 10 false Windshield Washer Motor and Pump Assembly

CAUTION / NOTICE / HINT

NOTICE:
·

Inspect the fuses of circuits related to this system before performing the following procedure.

·

Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.*1

*1: w/ Smart Entry and Start System




PROCEDURE

1.PERFORM ACTIVE TEST USING GTS
a.

Perform the Active Test according to the display on the GTS.

Body Electrical > Main Body > Active Test
Tester Display Measurement Item Control Range Diagnostic Note
Front Washer Relay Function to operate the windshield washer motor and pump assembly (Front) OFF or ON -
Rear Washer Relay Function to operate the windshield washer motor and pump assembly (Rear) OFF or ON -
Body Electrical > Main Body > Active Test
Tester Display
Front Washer Relay
50004 449 71
Body Electrical > Main Body > Active Test
Tester Display
Rear Washer Relay
50004 449 76
OK:

Windshield washer motor and pump assembly operates normally.



Result:
Proceed to
OK
NG



OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click hereVehicle Exterior>WIPER / WASHER>WIPER AND WASHER SYSTEM>PROBLEM SYMPTOMS TABLE


NG

2.INSPECT WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY
2.INSPECT WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY

Click hereVehicle Exterior>WIPER / WASHER>WASHER MOTOR>INSPECTION

Result:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (POWER SOURCE - WINDSHIELD WIPER RELAY ASSEMBLY)

NG

REPLACE WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY

Click hereVehicle Exterior>WIPER / WASHER>WASHER MOTOR>REMOVAL


3.CHECK HARNESS AND CONNECTOR (POWER SOURCE - WINDSHIELD WIPER RELAY ASSEMBLY)
B627233C01
1.573,0.302 2.01,0.531 0.438,0.229 1.698,1.417 1.135,1.219 true 0.135,0.104 0.448,0.302 0.313,0.198 10 false *a 0.74,1.135 1.354,1.333 0.615,0.198 10 false IGWS 1.667,0.323 2.125,0.521 0.458,0.198 10 false A55
*a Front view of wire harness connector
(to Windshield Wiper Relay Assembly)


a.

Disconnect the windshield wiper relay assembly connector.


b.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:
Tester Connection Switch Condition Specified Condition
A55-6 (IGWS) - Body ground Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

4.CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER RELAY ASSEMBLY - BODY GROUND)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER RELAY ASSEMBLY - BODY GROUND)
a.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
A55-5 (EWS) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

5.CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER RELAY ASSEMBLY - WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER RELAY ASSEMBLY - WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY)
a.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
A55-1 (+WR) - A35-1 (B) Always Below 1 Ω
A55-7 (-WR) - A35-2 (SW) Always Below 1 Ω
A55-1 (+WR) or A35-1 (B) - Body ground Always 10 kΩ or higher
A55-7 (-WR) or A35-2 (SW) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE WINDSHIELD WIPER RELAY ASSEMBLY

Click hereVehicle Exterior>WIPER / WASHER>WIPER ECU>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR