RM3660EC _59 Vehicle Exterior _080767 WIPER / WASHER _0391512 WIPER AND WASHER SYSTEM(for Gasoline Model) C

WIPER / WASHER  WIPER AND WASHER SYSTEM(for Gasoline Model)  B2357  Lost Communication with Wiper Module  


DESCRIPTION

The main body ECU (multiplex network body ECU) and windshield wiper relay assembly communicate via CXPI communication. The main body ECU (multiplex network body ECU) stores this DTC if communication becomes abnormal.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory DTC Output from
B2357 Lost Communication with Wiper Module
Detection condition:

Battery voltage is 9.5 V or more


Malfunction Status:

Communication malfunction between the main body ECU (multiplex network body ECU) and windshield wiper relay assembly


Malfunction Time:

10 seconds or more


·

Windshield wiper relay assembly

·

Main body ECU (multiplex network body ECU)

·

Harness or connector

·

No. 1 integration relay


○ Main Body

WIRING DIAGRAM

E395640E12
0.313,3.646 3.677,3.844 3.365,0.198 10 false Windshield Wiper Relay Assembly 5.271,3.271 6.896,3.76 1.625,0.49 10 false Main Body ECU (Multiplex Network Body ECU) 0.958,4.365 4.323,4.563 3.365,0.198 10 false : CXPI Communication Line 5.375,2.188 5.99,2.385 0.615,0.198 10 false CXP1 5.385,1.031 6,1.229 0.615,0.198 10 false WPS 3.531,0.406 6.896,0.604 3.365,0.198 10 false from Battery 3.948,1.031 7.156,1.24 3.208,0.208 10 false WIPER 5.99,0.552 6.604,0.75 0.615,0.198 10 false IG 6.354,0.552 6.969,0.75 0.615,0.198 10 false B 2.74,1.417 6.104,1.615 3.365,0.198 10 false IG1 NO. 3 3.448,1.021 6.771,1.229 3.323,0.208 10 false 2 2.583,1.021 5.906,1.229 3.323,0.208 10 false 1 2.583,0.771 5.906,0.979 3.323,0.208 10 false 3 3.448,0.771 6.771,0.979 3.323,0.208 10 false 4 1.281,0.906 4.646,1.104 3.365,0.198 10 false +B 1.104,2.198 4.469,2.396 3.365,0.198 10 false MPX1 1.354,2.729 4.719,2.927 3.365,0.198 10 false E 1.26,3.26 4.625,3.458 3.365,0.198 10 false ES 5.042,1.146 5.656,1.344 0.615,0.198 10 false I85 5.042,2.188 5.656,2.385 0.615,0.198 10 false I84 5.094,1.969 5.708,2.167 0.615,0.198 10 false 5 5.052,0.927 5.667,1.125 0.615,0.198 10 false 21 1.573,0.885 2.188,1.083 0.615,0.198 10 false A55 1.583,3.26 2.198,3.458 0.615,0.198 10 false A56 1.656,3.031 2.271,3.229 0.615,0.198 10 false 5 1.656,0.667 2.271,0.865 0.615,0.198 10 false 8 1.583,2.729 2.198,2.927 0.615,0.198 10 false A55 1.656,2.51 2.271,2.708 0.615,0.198 10 false 3 1.573,2.198 2.188,2.396 0.615,0.198 10 false A56 1.667,1.979 2.281,2.177 0.615,0.198 10 false 4 2.583,1.833 5.948,2.031 3.365,0.198 10 false No. 1 Integration Relay 2.583,1.698 5.948,1.896 3.365,0.198 10 false 1A

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.*

*: w/ Smart Entry and Start System




PROCEDURE

1.CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER RELAY ASSEMBLY - MAIN BODY ECU (MUX NETWORK BODY ECU))
a.

Disconnect the A56 windshield wiper relay assembly connector.


b.

Disconnect the I84 main body ECU (multiplex network body ECU) connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
A56-4 (MPX1) - I84-5 (CXP1) Always Below 1 Ω
A56-4 (MPX1) or I84-5 (CXP1) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

2.CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
E395641C01
1.521,0.25 1.938,0.5 0.417,0.25 1.802,1.583 2.052,1.073 true 0.104,0.167 0.417,0.365 0.313,0.198 10 false *a 1.635,0.292 1.948,0.49 0.313,0.198 10 false I84 1.615,1.615 2.01,1.813 0.396,0.198 10 false CXP1
*a Component without harness connected
(Main Body ECU (Multiplex Network Body ECU)


a.

Check for voltage and pulses according to the value(s) in the table below.

Standard Voltage and Pulse:
Tester Connection Condition Specified Condition
I84-5 (CXP1) - Body ground Ignition switch ON Pulse generation
Ignition switch off Below 1 V



Result:
Proceed to
OK
NG



OK

3.PERFORM ACTIVE TEST USING GTS

NG

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL


3.PERFORM ACTIVE TEST USING GTS
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter following menus: Body Electrical / Main Body / Active Test.


e.

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
Wiper Power Relay Function to operate the IG1 NO. 3 relay OFF or ON -
Body Electrical > Main Body > Active Test
Tester Display
Wiper Power Relay
50004 123 76
OK:

IG1 NO. 3 relay operates normally.



Result:
Proceed to
OK
NG



OK

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

NG

9.INSPECT NO. 1 INTEGRATION RELAY
4.CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER RELAY ASSEMBLY - BODY GROUND)
a.

Disconnect the A55 windshield wiper relay assembly connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
A55-3 (E) - Body ground Always Below 1 Ω
A56-5 (ES) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

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

Standard Voltage:
Tester Connection Condition Specified Condition
A55-8 (+B) - Body ground Ignition switch ON 11 to 14 V
Less than approximately 60 seconds after ignition switch turned off 11 to 14 V
Approximately 60 seconds or more after ignition switch turned off Below 1 V



Result:
Proceed to
OK
NG



OK

REPLACE WINDSHIELD WIPER RELAY ASSEMBLY

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


NG

6.INSPECT NO. 1 INTEGRATION RELAY
7.CHECK HARNESS AND CONNECTOR (POWER SOURCE - NO. 1 INTEGRATION RELAY)
a.

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

Standard Voltage:
Tester Connection Condition Specified Condition
1A-4 - Body ground Always 11 to 14 V



Result:
Proceed to
OK
NG



OK

8.CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER RELAY ASSEMBLY - NO. 1 INTEGRATION RELAY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER RELAY ASSEMBLY - NO. 1 INTEGRATION RELAY)
a.

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

Standard Resistance:
Tester Connection Condition Specified Condition
A55-8 (+B) - 1A-3 Always Below 1 Ω
A55-8 (+B) or 1A-3 - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

10.CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))
a.

Disconnect the I85 main body ECU (multiplex network body ECU) connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
1A-2 - I85-21 (WPS) Always Below 1 Ω
1A-2 or I85-21 (WPS) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

11.CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - BODY GROUND)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

11.CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - BODY GROUND)
a.

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

Standard Resistance:
Tester Connection Condition Specified Condition
1A-1 - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR