RM38N0EC _59 Vehicle Exterior _111846 WIPER / WASHER _0505202 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 relay assembly, it operates to spray washer fluid from the washer nozzle sub-assemblies.

WIRING DIAGRAM

0.74,0.292 1.354,0.49 0.615,0.198 10 false IGWS 0.719,0.771 1.333,0.969 0.615,0.198 10 false MPX1 0.792,1.208 1.25,1.406 0.458,0.198 10 false +WR 0.802,1.698 1.26,1.896 0.458,0.198 10 false -WR 0.792,2.177 1.25,2.375 0.458,0.198 10 false EWS 1.177,2.188 1.49,2.385 0.313,0.198 10 false A80 1.198,0.781 1.51,0.979 0.313,0.198 10 false A81 1.271,0.104 1.427,0.302 0.156,0.198 10 false 6 1.271,0.583 1.427,0.781 0.156,0.198 10 false 4 1.281,1.031 1.438,1.229 0.156,0.198 10 false 1 1.281,1.51 1.438,1.708 0.156,0.198 10 false 7 1.271,1.99 1.427,2.188 0.156,0.198 10 false 5 0.104,2.531 1.615,3.125 1.51,0.594 10 false Windshield Wiper Relay Assembly 1.813,1.594 1.969,1.792 0.156,0.198 10 false 2 3.323,1.604 3.479,1.802 0.156,0.198 10 false 1 1.833,1.969 2.146,2.167 0.313,0.198 10 false A39 2.125,1.969 3.74,2.948 1.615,0.979 10 false Windshield Washer Motor and Pump Assembly 3.688,0.771 4,0.969 0.313,0.198 10 false 4D 5.479,1.354 7.115,2.219 1.635,0.865 10 false Main Body ECU (Multiplex Network Body ECU) 5.521,0.781 6.135,0.979 0.615,0.198 10 false CXP1 3.729,0.573 3.885,0.781 0.156,0.208 10 false 5 2.802,0.292 4.188,0.573 1.385,0.281 10 false from IGP Relay 1.833,0.177 2.75,0.375 0.917,0.198 10 false WASHER 0.927,3.292 4.75,3.49 3.823,0.198 10 false : CXPI Communication Line 1.177,1.698 1.49,1.896 0.313,0.198 10 false A80 1.177,1.219 1.49,1.417 0.313,0.198 10 false A80 1.188,0.302 1.5,0.5 0.313,0.198 10 false A80 5.167,0.771 5.479,0.969 0.313,0.198 10 false MB 5.177,0.573 5.49,0.771 0.313,0.198 10 false 22 3.99,1.104 5.427,1.938 1.438,0.833 10 false Power Distribution Box Assembly

CAUTION / NOTICE / HINT

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

PROCEDURE

1.PERFORM ACTIVE TEST USING GTS

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

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click hereVehicle Exterior>WIPER / WASHER>WIPER AND WASHER SYSTEM>PROBLEM SYMPTOMS TABLE202111,999999,_59,_111846,_0505202,RM100000001ZLXJ,

2.INSPECT WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY

Remove the windshield washer motor and pump assembly.

Click hereVehicle Exterior>WIPER / WASHER>WASHER MOTOR>REMOVAL202111,999999,_59,_111846,_0500794,RM100000001Z3XC,

Inspect the windshield washer motor and pump assembly.

Click hereVehicle Exterior>WIPER / WASHER>WASHER MOTOR>INSPECTION202111,999999,_59,_111846,_0500794,RM100000001Z3XA,

Result:

Proceed to
OK
NG

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

REPLACE WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY

Click hereVehicle Exterior>WIPER / WASHER>WASHER MOTOR>REMOVAL202111,999999,_59,_111846,_0500794,RM100000001Z3XC,

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

Disconnect the A80 windshield wiper relay assembly connector.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
Click Location & Routing(A80)Location & Routingewd_type=routing;type=c;code=A80 Click Connector(A80)Instrument Panel>Engine Room Main Wire>Windshield Wiper Relay Assemblyewd_type=component;type=c;code=A80;pinno=6
A80-6 (IGWS) - Body ground	Ignition switch ON	11 to 14 V

Tester Connection

Condition

Specified Condition

Click Location & Routing(A80)Location & Routingewd_type=routing;type=c;code=A80

Click Connector(A80)Instrument Panel>Engine Room Main Wire>Windshield Wiper Relay Assemblyewd_type=component;type=c;code=A80;pinno=6

A80-6 (IGWS) - Body ground

Ignition switch ON

11 to 14 V

Result:

Proceed to
OK
NG

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

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
Click Location & Routing(A80)Location & Routingewd_type=routing;type=c;code=A80 Click Connector(A80)Instrument Panel>Engine Room Main Wire>Windshield Wiper Relay Assemblyewd_type=component;type=c;code=A80;pinno=5
A80-5 (EWS) - Body ground	Always	Below 1 Ω

Tester Connection

Condition

Specified Condition

Click Location & Routing(A80)Location & Routingewd_type=routing;type=c;code=A80

Click Connector(A80)Instrument Panel>Engine Room Main Wire>Windshield Wiper Relay Assemblyewd_type=component;type=c;code=A80;pinno=5

A80-5 (EWS) - Body ground

Always

Below 1 Ω

Result:

Proceed to
OK
NG

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

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
Click Location & Routing(A80,A39)Location & Routingewd_type=routing;type=c,c;code=A80,A39 Click Connector(A80)Instrument Panel>Engine Room Main Wire>Windshield Wiper Relay Assemblyewd_type=component;type=c;code=A80;pinno=1,7 Click Connector(A39)Engine Compartment>Engine Room Main Wire / Transmission Wire>Windshield Washer Motor and Pump Assemblyewd_type=component;type=c;code=A39;pinno=1,2
A80-1 (+WR) - A39-1	Always	Below 1 Ω
A80-7 (-WR) - A39-2	Always	Below 1 Ω
A80-1 (+WR) or A39-1 - Body ground	Always	10 kΩ or higher
A80-7 (-WR) or A39-2 - Body ground	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

REPLACE WINDSHIELD WIPER RELAY ASSEMBLY

Click hereVehicle Exterior>WIPER / WASHER>WIPER ECU>REMOVAL202111,202203,_59,_111846,_0500798,RM100000001Z3XT,202203,202303,_59,_111846,_0500798,RM1000000022I32,202303,202406,_59,_111846,_0500798,RM100000002B1O0,202406,999999,_59,_111846,_0500798,RM100000002MTOH,

REPAIR OR REPLACE HARNESS OR CONNECTOR