RM35X0E _57 Power Source / Network _078518 NETWORKING _0388279 LIN COMMUNICATION SYSTEM C

NETWORKING  LIN COMMUNICATION SYSTEM  B2325  LIN Communication Bus Malfunction  


DESCRIPTION

The main body ECU (multiplex network body ECU) intermittently monitors the LIN communication bus between the components related to the doors. DTC B2325 is stored when a malfunction in the LIN communication bus between the components related to the doors is detected consecutively 3 times.

DTC No. Detection Item DTC Detection Condition Trouble Area
B2325 LIN Communication Bus Malfunction The main body ECU (multiplex network body ECU) detects a communication error with an ECU connected to the door bus lines for 8 seconds or more.
·

Main body ECU (multiplex network body ECU)

·

Instrument panel junction block assembly

·

Multiplex network master switch assembly

·

Power window regulator motor assembly LH

·

Power window regulator motor assembly RH

·

Harness or connector



WIRING DIAGRAM

C405950E01
5.417,0.938 6.031,1.135 0.615,0.198 10 false LIN2 5.417,1.469 6.031,1.667 0.615,0.198 10 false GND1 1.427,2.104 2.042,2.302 0.615,0.198 10 false LIN2 1.427,1.781 2.042,1.979 0.615,0.198 10 false LIN1 1.521,3.615 2.135,3.813 0.615,0.198 10 false LIN 5.438,3.604 6.052,3.802 0.615,0.198 10 false LIN 4.021,4.094 7.094,4.583 3.073,0.49 10 false Power Window Regulator Motor Assembly RH*1, Power Window Regulator Motor Assembly LH*2 0.229,4.208 3.26,4.604 3.031,0.396 10 false Power Window Regulator Motor Assembly LH*1, Power Window Regulator Motor Assembly RH*2 0.458,2.594 2.115,3.042 1.656,0.448 10 false Multiplex Network Master Switch Assembly 5.375,2.208 6.563,3.219 1.188,1.01 10 false Main Body ECU (Multiplex Network Body ECU) 4.125,1.896 5.188,2.792 1.063,0.896 10 false Instrument Panel Junction Block Assembly 5.375,2.031 5.531,2.229 0.156,0.198 10 false A 4.021,3.885 4.813,4.115 0.792,0.229 10 false R7*1, R17*2 0.271,4.042 1.135,4.25 0.865,0.208 10 false R12*1, R2*2 0.479,2.417 1.313,2.615 0.833,0.198 10 false R11*1, R1*2 0.667,5.323 2.552,5.688 1.885,0.365 10 false : LIN Communication Line 4.063,0.938 4.375,1.135 0.313,0.198 10 false 3B 4.063,1.469 4.375,1.667 0.313,0.198 10 false 3B 4.063,0.74 4.677,0.938 0.615,0.198 10 false 17 5.135,0.75 5.448,0.948 0.313,0.198 10 false 16 5.135,1.354 5.448,1.552 0.313,0.198 10 false 11 4.094,1.271 4.25,1.469 0.156,0.198 10 false 3 1.865,1.938 2.177,2.135 0.313,0.198 10 false 11 1.865,1.604 2.177,1.802 0.313,0.198 10 false 5 1.865,3.448 2.021,3.646 0.156,0.198 10 false 9 5.208,3.438 5.365,3.635 0.156,0.198 10 false 9 2.49,5.333 3.354,5.542 0.865,0.208 10 false *1: for LHD 3.438,5.333 4.302,5.542 0.865,0.208 10 false *2: for RHD

CAUTION / NOTICE / HINT

NOTICE:
·

When using the GTS with the ignition switch off to troubleshoot:

Connect the GTS to the vehicle and turn a courtesy light switch on and off at intervals of 1.5 seconds until communication between the GTS and vehicle begins.

·

When the power window regulator motor assembly LH*1 or RH*2 is removed and reinstalled or replaced, the power window regulator motor assembly LH*1 or RH*2 must be initialized.

*1: for LHD

*2: for RHD


·

Recognition code registration is necessary when replacing the main body ECU (multiplex network body ECU).



PROCEDURE

1.CHECK FOR DTC
a.

Clear the DTCs.

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

Body Electrical > Main Body > Clear DTCs
50002 123

b.

Check for DTCs.

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

Body Electrical > Main Body > Trouble Codes
50001 123

Result:
Result Proceed to
DTC B2325 is not output A
DTC B2325 is output (for LHD) B
DTC B2325 is output (for RHD) C



A

USE SIMULATION METHOD TO CHECK

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


B

2.CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY LH

C

6.CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY RH
2.CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY LH
a.

Disconnect the R12 power window regulator motor assembly LH connector.


b.

Clear the DTCs.

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

Body Electrical > Main Body > Clear DTCs
50002 123

c.

Check for DTCs.

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

Body Electrical > Main Body > Trouble Codes
50001 123

Result:
Result Proceed to
DTC B2325 is output A
DTC B2321 is output B



A

3.CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

B

REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY LH

Click hereVehicle Exterior>WINDOW / GLASS>POWER WINDOW REGULATOR MOTOR>REMOVAL


3.CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY
a.

Disconnect the R11 multiplex network master switch assembly connector.


b.

Clear the DTCs.

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

Body Electrical > Main Body > Clear DTCs
50002 123

c.

Check for DTCs.

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

Body Electrical > Main Body > Trouble Codes
50001 123

Result:
Result Proceed to
DTC B2325 is output A
DTC B1206 and B2321 are output B



A

4.CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY RH

B

5.CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - POWER WINDOW REGULATOR MOTOR ASSEMBLY LH)
4.CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY RH
a.

Disconnect the R7 power window regulator motor assembly RH connector.


b.

Clear the DTCs.

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

Body Electrical > Main Body > Clear DTCs
50002 123

c.

Check for DTCs.

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

Body Electrical > Main Body > Trouble Codes
50001 123

Result:
Result Proceed to
DTC B2325 is output A
DTC B2322 is output B



A

9.CHECK HARNESS AND CONNECTOR (LIN Bus Circuit)

B

REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY RH

Click hereVehicle Exterior>WINDOW / GLASS>POWER WINDOW REGULATOR MOTOR>REMOVAL


5.CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - POWER WINDOW REGULATOR MOTOR ASSEMBLY LH)
a.

Disconnect the R11 multiplex network master switch assembly connector.


b.

Disconnect the R12 power window regulator motor assembly LH connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
R11-11 (LIN2) - R12-9 (LIN) Always Below 1 Ω
R11-11 (LIN2) or R12-9 (LIN) - Other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

Click hereVehicle Exterior>WINDOW / GLASS>POWER WINDOW MASTER SWITCH>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY RH
a.

Disconnect the R2 power window regulator motor assembly RH connector.


b.

Clear the DTCs.

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

Body Electrical > Main Body > Clear DTCs
50002 123

c.

Check for DTCs.

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

Body Electrical > Main Body > Trouble Codes
50001 123

Result:
Result Proceed to
DTC B2325 is output A
DTC B2321 is output B



A

7.CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

B

REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY RH

Click hereVehicle Exterior>WINDOW / GLASS>POWER WINDOW REGULATOR MOTOR>REMOVAL


7.CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY
a.

Disconnect the R1 multiplex network master switch assembly connector.


b.

Clear the DTCs.

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

Body Electrical > Main Body > Clear DTCs
50002 123

c.

Check for DTCs.

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

Body Electrical > Main Body > Trouble Codes
50001 123

Result:
Result Proceed to
DTC B2325 is output A
DTC B1206 and B2321 are output B



A

8.CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY LH

B

11.CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - POWER WINDOW REGULATOR MOTOR ASSEMBLY RH)
8.CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY LH
a.

Disconnect the R17 power window regulator motor assembly LH connector.


b.

Clear the DTCs.

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

Body Electrical > Main Body > Clear DTCs
50002 123

c.

Check for DTCs.

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

Body Electrical > Main Body > Trouble Codes
50001 123

Result:
Result Proceed to
DTC B2325 is output A
DTC B2322 is output B



A

9.CHECK HARNESS AND CONNECTOR (LIN Bus Circuit)

B

REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY LH

Click hereVehicle Exterior>WINDOW / GLASS>POWER WINDOW REGULATOR MOTOR>REMOVAL


9.CHECK HARNESS AND CONNECTOR (LIN Bus Circuit)
a.

Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

for LHD: Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for LHD)>REMOVAL

for RHD: Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for RHD)>REMOVAL



b.

Reconnect the instrument panel junction block assembly connectors.


c.

Disconnect the R12*1 or R17*2 power window regulator motor assembly LH connector.

*1: for LHD

*2: for RHD



d.

Disconnect the R7*1 or R2*2 power window regulator motor assembly RH connector.

*1: for LHD

*2: for RHD



e.

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

Standard Resistance:
Tester Connection Condition Specified Condition
A-16 (LIN2) - Body ground Always 10 kΩ or higher
A-16 (LIN2) - Other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

for LHD: Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for LHD)>REMOVAL

for RHD: Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for RHD)>REMOVAL


NG

10.CHECK HARNESS AND CONNECTOR (LIN Bus Circuit)
10.CHECK HARNESS AND CONNECTOR (LIN Bus Circuit)
a.

Disconnect the 3B instrument panel junction block assembly connector.


b.

Disconnect the R12*1 or R17*2 power window regulator motor assembly LH connector.

*1: for LHD

*2: for RHD



c.

Disconnect the R7*1 or R2*2 power window regulator motor assembly RH connector.

*1: for LHD

*2: for RHD



d.

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

Standard Resistance:
Tester Connection Condition Specified Condition
3B-17 - Body ground Always 10 kΩ or higher
3B-17 - Other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

for LHD: Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for LHD)>REMOVAL

for RHD: Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for RHD)>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

11.CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - POWER WINDOW REGULATOR MOTOR ASSEMBLY RH)
a.

Disconnect the R1 multiplex network master switch assembly connector.


b.

Disconnect the R2 power window regulator motor assembly RH connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
R1-11 (LIN2) - R2-9 (LIN) Always Below 1 Ω
R1-11 (LIN2) or R2-9 (LIN) - Other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

Click hereVehicle Exterior>WINDOW / GLASS>POWER WINDOW MASTER SWITCH>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR