RM36D0EC _57 Power Source / Network _083091 NETWORKING _0677151 CXPI COMMUNICATION SYSTEM C

NETWORKING  CXPI COMMUNICATION SYSTEM  B235587  Power Distribution Box Missing Message  B235787  Wiper Module Missing Message  


DESCRIPTION

This DTC is stored when CXPI communication between the power distribution box assembly or windshield wiper relay assembly and main body ECU (multiplex network body ECU) stops for 10 seconds or more.

DTC No. Detection Item DTC Detection Condition Trouble Area
B235587 Power Distribution Box Missing Message No communication between power distribution box assembly and main body ECU (multiplex network body ECU) for 10 seconds or more
·

Main body ECU (multiplex network body ECU)

·

Power distribution box assembly


B235787 Wiper Module Missing Message No communication between windshield wiper relay assembly and main body ECU (multiplex network body ECU) for 10 seconds or more
·

Main body ECU (multiplex network body ECU)

·

Windshield wiper relay assembly

·

Harness or connector



WIRING DIAGRAM

C435690E06
0.781,8.49 2.729,8.719 1.948,0.229 10 false : CXPI Communication Line 3.167,8.188 6.177,8.396 3.01,0.208 10 false Power Distribution Box Assembly 6.552,3.74 7.094,4.146 0.542,0.406 10 false to Each Load 0.563,4.271 2.344,4.677 1.781,0.406 10 false Main Body ECU (Multiplex Network Body ECU) 2.063,3.375 2.479,3.573 0.417,0.198 10 false CXP1 3.354,3.344 3.594,3.521 0.24,0.177 10 false IC 3.698,4.229 4.073,4.385 0.375,0.156 10 false CPU 0.271,0.531 1.135,0.938 0.865,0.406 10 false from Auxiliary Battery 2.563,0.563 2.875,0.76 0.313,0.198 10 false 6J 2.542,1.073 2.854,1.271 0.313,0.198 10 false 6B 2.552,1.906 2.865,2.104 0.313,0.198 10 false 6C 1.365,0.365 2.406,0.552 1.042,0.188 10 false INP STD NO.1-1 0.063,1.885 1.51,2.854 1.448,0.969 10 false from Certification ECU (Smart Key ECU Assembly)*1 or Ignition Switch*2 2.552,5.979 2.865,6.177 0.313,0.198 10 false 6E 2.594,5.781 2.906,5.979 0.313,0.198 10 false 5 2.573,6.656 2.885,6.854 0.313,0.198 10 false 6B 2.552,7.063 2.865,7.26 0.313,0.198 10 false 6C 2.573,6.479 2.885,6.677 0.313,0.198 10 false 44 2.573,6.885 2.885,7.083 0.313,0.198 10 false 25 2.583,0.375 2.74,0.573 0.156,0.198 10 false 1 2.563,1.719 2.875,1.917 0.313,0.198 10 false 17 2.563,0.885 2.875,1.083 0.313,0.198 10 false 11 2.563,3.354 2.979,3.552 0.417,0.198 10 false A 2.563,3.167 2.979,3.365 0.417,0.198 10 false 22 2.552,7.49 2.865,7.688 0.313,0.198 10 false 6B 2.563,7.885 2.875,8.083 0.313,0.198 10 false 6C 2.583,7.729 2.896,7.927 0.313,0.198 10 false 41 2.583,7.313 2.896,7.51 0.313,0.198 10 false 36 0.26,1.01 1.385,1.729 1.125,0.719 10 false from Certification ECU (Smart Key ECU Assembly)*1 0.25,5.458 5.75,5.656 5.5,0.198 10 false *2: w/o Smart Entry and Start System 0.271,5.042 5.771,5.24 5.5,0.198 10 false *1: w/ Smart Entry and Start System

C434955E04
4.854,1.083 6.229,1.281 1.375,0.198 10 false from WIPER Relay 3.677,0.406 5.052,0.604 1.375,0.198 10 false WASHER 4.844,0.594 6.698,0.885 1.854,0.292 10 false from IGR Relay 2.031,1.188 3.406,1.385 1.375,0.198 10 false MPX1 2.625,0.583 3.24,0.792 0.615,0.208 10 false IGWS 2.792,1.073 3.406,1.281 0.615,0.208 10 false +B 2.646,1.625 3.26,1.833 0.615,0.208 10 false EWS 1.49,2.094 3.792,2.344 2.302,0.25 10 false Windshield Wiper Relay Assembly 0.854,3.469 2.75,3.74 1.896,0.271 10 false : CXPI Communication Line 1.719,0.958 2.115,1.146 0.396,0.188 10 false 4 3.208,0.385 3.604,0.573 0.396,0.188 10 false 6 3.198,0.865 3.594,1.052 0.396,0.188 10 false 8 3.188,1.396 3.583,1.583 0.396,0.188 10 false 5 1.677,1.156 2.073,1.344 0.396,0.188 10 false A6 3.156,1.615 3.552,1.802 0.396,0.188 10 false A5 3.167,1.083 3.563,1.271 0.396,0.188 10 false A5 3.167,0.594 3.563,0.781 0.396,0.188 10 false A5

CAUTION / NOTICE / HINT

NOTICE:
·

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

·

When disconnecting and reconnecting the auxiliary battery.

HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>AUTOMATIC LEARNING CHART


·

Some parts must be initialized and set when replacing or removing and installing parts.

Click hereGeneral>SETUP>WHEN REPLACING OR REMOVING/INSTALLING PARTS>WORK PROCEDURE



PROCEDURE

1.CLEAR DTC
a.

Clear the DTCs.

Click herePower Source / Network>NETWORKING>CXPI COMMUNICATION SYSTEM>DTC CHECK / CLEAR

Body Electrical > Main Body > Clear DTCs
50002 449

Result:
Proceed to
NEXT



NEXT

2.CHECK FOR DTC
2.CHECK FOR DTC
a.

Check for DTCs.

Click herePower Source / Network>NETWORKING>CXPI COMMUNICATION SYSTEM>DTC CHECK / CLEAR

Body Electrical > Main Body > Trouble Codes
50001 449

Result:
Result Proceed to
DTC B235587 and B235787 is output A
DTC B235587 is output B
DTC B235787 is output C
DTC is not output D



A

3.CHECK POWER DISTRIBUTION BOX ASSEMBLY

B

4.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY POWER SOURCE CIRCUIT)

C

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

D

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


3.CHECK POWER DISTRIBUTION BOX ASSEMBLY
a.

Remove the power distribution box assembly.

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


b.

Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.


c.

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

Standard Resistance
Tester Connection Condition Specified Condition
A-22 (CXP1) - 6E-5 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

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

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


4.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY POWER SOURCE CIRCUIT)
a.

Turn the ignition switch off.


b.

Disconnect the power distribution box assembly connectors.

C435689C07
1.875,0.073 2.292,0.323 0.417,0.25 5.156,0.083 5.573,0.333 0.417,0.25 0.104,0.083 0.417,0.24 0.313,0.156 10 false *a 2.01,0.135 2.323,0.292 0.313,0.156 10 false 6B 5.302,0.146 5.615,0.302 0.313,0.156 10 false 6C
*a Front view of wire harness connector
(to Power Distribution Box Assembly) 		- -



c.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
6B-11 - Body ground Ignition switch ON 11 to 14 V
6C-17 - Body ground Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

5.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - BODY GROUND)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - BODY GROUND)
a.

Disconnect the 6B and 6C power distribution box assembly connectors.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
6B-44 - Body ground Always Below 1 Ω
6B-36 - Body ground Always Below 1 Ω
6C-25 - Body ground Always Below 1 Ω
6C-41 - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

Disconnect the A5 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
A5-5 (EWS) - Body ground Always Below 1 Ω



c.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
A5-6 (IGWS) - Body ground Ignition switch ON 11 to 14 V
A5-8 (+B) - Body ground Ignition switch off 11 to 14 V



Result:
Proceed to
OK
NG



OK

7.CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER RELAY ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER RELAY ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY)
a.

Turn the ignition switch off.


b.

Disconnect the cable from the negative (-) auxiliary battery terminal.


c.

Disconnect the A6 windshield wiper relay assembly connector.


d.

Disconnect the 6E power distribution box assembly connector.


e.

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

Standard Resistance:
Tester Connection Condition Specified Condition
A6-4 (MPX1) - 6E-5 Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
A6-4 (MPX1) or 6E-5 - Body ground Cable disconnected from negative (-) auxiliary battery terminal 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