RM38T0EC _57 Power Source / Network _104409 NETWORKING _0510092 LIN COMMUNICATION SYSTEM C

NETWORKING  LIN COMMUNICATION SYSTEM  B232588  Door LIN Bus off  


DESCRIPTION

If 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, DTC B232588 will be stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
B232588 Door LIN Bus off 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)

·

Power distribution box assembly

·

Multiplex network master switch assembly

·

Front power window regulator motor assembly (driver door)

·

Front power window regulator motor assembly (front passenger door)

·

Rear power window regulator motor assembly (rear RH door)

·

Rear power window regulator motor assembly (rear LH door)

·

Sliding roof ECU (sliding roof drive gear sub-assembly)*1, *2

·

Kick door control sensor assembly*3

·

Wire harness or connector



*1: w/ Sliding Roof System

*2: w/ Panoramic Moon Roof System

*3: w/ Power Back Door


WIRING DIAGRAM

C462587E01
1.083,1.042 1.458,1.229 0.375,0.188 10 false LIN2 0.24,3.396 1.396,3.938 1.156,0.542 10 false Main Body ECU (Multiplex Network Body ECU) 1.5,3.313 2.917,3.885 1.417,0.573 10 false Power Distribution Box Assembly 2.719,5.271 3.177,5.469 0.458,0.198 10 false MPX1 1.708,6.219 3.615,6.635 1.906,0.417 10 false Sliding Roof ECU (Sliding Roof Drive Gear Sub-assembly)*1,*2 0.146,9.156 2.042,9.375 1.896,0.219 10 false *1: w/ Sliding Roof System 0.604,9.521 2.5,9.74 1.896,0.219 10 false : LIN Communication Line 5,1.052 5.375,1.24 0.375,0.188 10 false LIN1 5,1.406 5.375,1.594 0.375,0.188 10 false LIN2 4.99,2.885 5.365,3.073 0.375,0.188 10 false LIN 4.719,3.521 6.635,3.917 1.917,0.396 10 false Front Power Window Regulator Motor Assembly (Driver Door) 5,4.542 5.375,4.729 0.375,0.188 10 false LIN 4.469,5.188 6.76,5.563 2.292,0.375 10 false Front Power Window Regulator Motor Assembly (Front Passenger Door) 5,6.198 5.375,6.385 0.375,0.188 10 false LIN 4.521,6.844 6.792,7.229 2.271,0.385 10 false Rear Power Window Regulator Motor Assembly (Rear RH Door) 5,7.865 5.375,8.052 0.375,0.188 10 false LIN 4.531,8.531 6.802,8.917 2.271,0.385 10 false Rear Power Window Regulator Motor Assembly (Rear LH Door) 1.563,0.844 1.76,1.021 0.198,0.177 10 false 15 1.531,1.052 1.781,1.229 0.25,0.177 10 false MB 2.75,0.844 2.948,1.021 0.198,0.177 10 false 17 2.75,1.052 3,1.229 0.25,0.177 10 false 8F 2.75,1.375 2.948,1.552 0.198,0.177 10 false 37 2.74,1.573 2.99,1.75 0.25,0.177 10 false 8B 4.75,0.896 4.948,1.073 0.198,0.177 10 false 17 4.74,1.26 4.938,1.438 0.198,0.177 10 false 16 4.781,1.698 5.156,1.885 0.375,0.188 10 false L7 4.802,2.729 5,2.906 0.198,0.177 10 false 9 4.708,3.365 5.083,3.552 0.375,0.188 10 false L2 4.823,4.385 5.021,4.563 0.198,0.177 10 false 9 4.479,5 4.854,5.188 0.375,0.188 10 false K2 4.813,6.031 5.01,6.208 0.198,0.177 10 false 9 4.531,6.656 4.906,6.844 0.375,0.188 10 false M2 4.833,7.719 5.031,7.896 0.198,0.177 10 false 9 4.531,8.344 4.906,8.531 0.375,0.188 10 false N2 3.229,5.125 3.427,5.302 0.198,0.177 10 false 7 1.719,6.042 2.51,6.229 0.792,0.188 10 false T12*1, f1*2 4.771,1.875 6.365,2.271 1.594,0.396 10 false Multiplex Network Master Switch Assembly 3.094,3.667 3.51,3.875 0.417,0.208 10 false *1, *2 1.531,2.167 1.781,2.344 0.25,0.177 10 false MB 1.552,1.969 1.75,2.146 0.198,0.177 10 false 13 2.74,2.167 2.99,2.344 0.25,0.177 10 false 8B 2.75,1.969 2.948,2.146 0.198,0.177 10 false 36 2.75,2.979 3,3.156 0.25,0.177 10 false 8C 2.76,2.771 2.958,2.948 0.198,0.177 10 false 41 1.01,2.146 1.479,2.333 0.469,0.188 10 false GND1 3.531,7.698 3.948,7.906 0.417,0.208 10 false *3 1.417,8.344 1.792,8.531 0.375,0.188 10 false R14 1.406,8.5 3.823,8.708 2.417,0.208 10 false Kick Door Control Sensor Assembly*3 2.219,9.156 4.594,9.396 2.375,0.24 10 false *2: w/ Panoramic Moon Roof System 4.76,9.156 6.656,9.375 1.896,0.219 10 false *3: w/ Power Back Door 3.24,7.698 3.438,7.875 0.198,0.177 10 false 1 2.896,7.865 3.271,8.052 0.375,0.188 10 false LIN

CAUTION / NOTICE / HINT

NOTICE:
·

When a power window regulator motor assembly is replaced or removed and reinstalled, it is necessary to perform initialization.

Click hereVehicle Exterior>WINDOW / GLASS>POWER WINDOW CONTROL SYSTEM (Production Date from 2023/04)>INITIALIZATION

·

When the sliding roof ECU (sliding roof drive gear sub-assembly) is replaced or removed and reinstalled, it is necessary to perform initialization.*1

Click hereVehicle Exterior>SLIDING ROOF / CONVERTIBLE>SLIDING ROOF SYSTEM (Production Date from 2023/04)>INITIALIZATION

*1: w/ Sliding Roof System


·

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



PROCEDURE

1.CLEAR DTC
a.

Disconnect the L2 front power window regulator motor assembly (driver door) connector.


b.

Clear the DTCs.

Body Electrical > Main Body > Clear DTCs
50002 449

Result:
Proceed to
NEXT



NEXT

2.CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY (DRIVER DOOR)
2.CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY (DRIVER DOOR)
a.

Wait for at least 10 seconds.


b.

Check for DTCs.

Body Electrical > Main Body > Trouble Codes
50001 449
Result:
Result Proceed to
B232588 is output A
B232588 is not output B




A

3.CLEAR DTC

B

REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY (DRIVER DOOR)

Click hereVehicle Exterior>WINDOW / GLASS>POWER WINDOW REGULATOR MOTOR (for Front Door)>REMOVAL


3.CLEAR DTC
a.

Disconnect the L7 multiplex network master switch assembly connector.


b.

Clear the DTCs.

Body Electrical > Main Body > Clear DTCs
50002 449

Result:
Proceed to
NEXT



NEXT

4.CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY
4.CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY
a.

Wait for at least 10 seconds.


b.

Check for DTCs.

Body Electrical > Main Body > Trouble Codes
50001 449
Result:
Result Proceed to
B232588 is output A
B232588 is not output B




A

5.CLEAR DTC

B

26.CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY (DRIVER DOOR))
5.CLEAR DTC
a.

Disconnect the K2 front power window regulator motor assembly (front passenger door) connector.


b.

Clear the DTCs.

Body Electrical > Main Body > Clear DTCs
50002 449

Result:
Proceed to
NEXT



NEXT

6.CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY (FRONT PASSENGER DOOR)
6.CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY (FRONT PASSENGER DOOR)
a.

Wait for at least 10 seconds.


b.

Check for DTCs.

Body Electrical > Main Body > Trouble Codes
50001 449
Result:
Result Proceed to
B232588 is output A
B232588 is not output B




A

7.CLEAR DTC

B

REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY (FRONT PASSENGER DOOR)

Click hereVehicle Exterior>WINDOW / GLASS>POWER WINDOW REGULATOR MOTOR (for Front Door)>REMOVAL


7.CLEAR DTC
a.

Disconnect the M2 rear power window regulator motor assembly (rear RH door) connector.


b.

Clear the DTCs.

Body Electrical > Main Body > Clear DTCs
50002 449

Result:
Proceed to
NEXT



NEXT

8.CHECK REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY (REAR RH DOOR)
8.CHECK REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY (REAR RH DOOR)
a.

Wait for at least 10 seconds.


b.

Check for DTCs.

Body Electrical > Main Body > Trouble Codes
50001 449
Result:
Result Proceed to
B232588 is output A
B232588 is not output B




A

9.CLEAR DTC

B

REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY (REAR RH DOOR)

Click hereVehicle Exterior>WINDOW / GLASS>POWER WINDOW REGULATOR MOTOR (for Rear Door)>REMOVAL


9.CLEAR DTC
a.

Disconnect the N2 rear power window regulator motor assembly (rear LH door) connector.


b.

Clear the DTCs.

Body Electrical > Main Body > Clear DTCs
50002 449

Result:
Proceed to
NEXT



NEXT

10.CHECK REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY (REAR LH DOOR)
10.CHECK REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY (REAR LH DOOR)
a.

Wait for at least 10 seconds.


b.

Check for DTCs.

Body Electrical > Main Body > Trouble Codes
50001 449
Result:
Result Proceed to
B232588 is output A
B232588 is not output B




A

11.CHECK VEHICLE TYPE

B

REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY (REAR LH DOOR)

Click hereVehicle Exterior>WINDOW / GLASS>POWER WINDOW REGULATOR MOTOR (for Rear Door)>REMOVAL


11.CHECK VEHICLE TYPE
a.

Check the vehicle specification.


Result:
Result Proceed to
w/ Power Back Door A
w/o Power Back Door B



A

12.CLEAR DTC

B

14.CHECK VEHICLE TYPE
12.CLEAR DTC
a.

Disconnect the R14 kick door control sensor assembly connector.


b.

Clear the DTCs.

Body Electrical > Main Body > Clear DTCs
50002 449

Result:
Proceed to
NEXT



NEXT

13.CHECK KICK DOOR CONTROL SENSOR ASSEMBLY
13.CHECK KICK DOOR CONTROL SENSOR ASSEMBLY
a.

Wait for at least 10 seconds.


b.

Check for DTCs.

Body Electrical > Main Body > Trouble Codes
50001 449
Result:
Result Proceed to
B232588 is output A
B232588 is not output B




A

14.CHECK VEHICLE TYPE

B

REPLACE KICK DOOR CONTROL SENSOR ASSEMBLY

Click hereVehicle Exterior>DOOR / HATCH>KICK SENSOR>REMOVAL


14.CHECK VEHICLE TYPE
a.

Check the vehicle specification.


Result:
Result Proceed to
w/ Sliding Roof System A
w/o Sliding Roof System B



A

15.CLEAR DTC

B

17.CHECK VEHICLE TYPE
15.CLEAR DTC
a.

Disconnect the T12 sliding roof ECU (sliding roof drive gear sub-assembly) connector.


b.

Clear the DTCs.

Body Electrical > Main Body > Clear DTCs
50002 449

Result:
Proceed to
NEXT



NEXT

16.CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)
16.CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)
a.

Wait for at least 10 seconds.


b.

Check for DTCs.

Body Electrical > Main Body > Trouble Codes
50001 449
Result:
Result Proceed to
B232588 is output A
B232588 is not output B




A

23.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - EACH ECU)

B

REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)

Click hereVehicle Exterior>SLIDING ROOF / CONVERTIBLE>SLIDING ROOF HOUSING (for Moon Roof)>REMOVAL


17.CHECK VEHICLE TYPE
a.

Check the vehicle specification.


Result:
Result Proceed to
w/ Panoramic Moon Roof System A
w/o Panoramic Moon Roof System B



A

18.CLEAR DTC

B

23.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - EACH ECU)
18.CLEAR DTC
a.

Disconnect the f1 sliding roof ECU (sliding roof drive gear sub-assembly) connector.


b.

Clear the DTCs.

Body Electrical > Main Body > Clear DTCs
50002 449

Result:
Proceed to
NEXT



NEXT

19.CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)
19.CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)
a.

Wait for at least 10 seconds.


b.

Check for DTCs.

Body Electrical > Main Body > Trouble Codes
50001 449
Result:
Result Proceed to
B232588 is output A
B232588 is not output B




A

20.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - EACH ECU)

B

REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)

Click hereVehicle Exterior>SLIDING ROOF / CONVERTIBLE>SLIDING ROOF HOUSING (for Moon Roof)>REMOVAL


20.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - EACH ECU)
a.

Disconnect the 8F power distribution box assembly connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
8F-17 - Body ground Always 10 kΩ or higher
8F-17 - Other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

21.INSPECT POWER DISTRIBUTION BOX ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

21.INSPECT POWER DISTRIBUTION BOX ASSEMBLY
a.

Remove the power distribution box assembly.

HINT:

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.

B583176C09
1.573,0.688 1.99,0.969 0.417,0.281 5.135,0.25 5.552,0.531 0.417,0.281 5.135,1.896 5.552,2.177 0.417,0.281 1.583,2.031 2,2.313 0.417,0.281 1.896,1.271 2.094,1.615 true 1.677,0.75 1.99,0.948 0.313,0.198 10 false MB 2.135,1.521 2.75,1.719 0.615,0.198 10 false LIN2 5.26,0.302 5.573,0.5 0.313,0.198 10 false 8F 5.26,1.948 5.573,2.146 0.313,0.198 10 false 8B 1.698,2.094 2.01,2.292 0.313,0.198 10 false 8C 0.156,0.135 0.469,0.333 0.313,0.198 10 false *a
*a Component without harness connected
(Power Distribution Box Assembly) 		- -



c.

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

HINT:

This inspection is to check the LIN communication line in the power distribution box assembly that connects the wire harness to the built-in main body ECU (multiplex network body ECU).


Standard Resistance:
Tester Connection Condition Specified Condition
8F-17 - 8B-36 Always 10 kΩ or higher
8F-17 - 8C-41 Always 10 kΩ or higher
MB-15 (LIN2) - Other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

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

NG

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

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


22.CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
a.

Install the main body ECU (multiplex network body ECU) to the power distribution box assembly.


b.

Connect all power distribution box assembly connectors.


c.

Using the GTS, check the waveform.

C462580C02
1.125,3.323 1.542,3.573 0.417,0.25 0.167,0.135 0.479,0.292 0.313,0.156 10 false *a 4.698,0.917 5.01,1.073 0.313,0.156 10 false *b 4.458,2.583 5.146,2.979 0.688,0.396 10 false GND 1.25,3.354 1.938,3.75 0.688,0.396 10 false 8F
*a Component with harness connected
(Power Distribution Box Assembly) 		*b Waveform


HINT:

This inspection is to check the LIN communication line in the power distribution box assembly that connects the wire harness to the built-in main body ECU (multiplex network body ECU).


OK:
Tester Connection Switch Condition Tool Setting Specified Condition
8F-17 - Body ground Ignition switch ON 2 V/DIV., 200 ms/DIV. Pulse generation
(See waveform)



Result:
Proceed to
OK
NG



OK

USE SIMULATION METHOD TO CHECK

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


NG

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

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


23.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - EACH ECU)
a.

Disconnect the 8B and 8F 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
8F-17 - Body ground Always 10 kΩ or higher
8F-17 - Other terminals Always 10 kΩ or higher
8B-37 - Body ground Always 10 kΩ or higher
8B-37 - Other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

24.INSPECT POWER DISTRIBUTION BOX ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

24.INSPECT POWER DISTRIBUTION BOX ASSEMBLY
a.

Remove the power distribution box assembly.

HINT:

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.

B583176C09
1.573,0.688 1.99,0.969 0.417,0.281 5.135,0.25 5.552,0.531 0.417,0.281 5.135,1.896 5.552,2.177 0.417,0.281 1.583,2.031 2,2.313 0.417,0.281 1.896,1.271 2.094,1.615 true 1.677,0.75 1.99,0.948 0.313,0.198 10 false MB 2.135,1.521 2.75,1.719 0.615,0.198 10 false LIN2 5.26,0.302 5.573,0.5 0.313,0.198 10 false 8F 5.26,1.948 5.573,2.146 0.313,0.198 10 false 8B 1.698,2.094 2.01,2.292 0.313,0.198 10 false 8C 0.156,0.135 0.469,0.333 0.313,0.198 10 false *a
*a Component without harness connected
(Power Distribution Box Assembly) 		- -



c.

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

HINT:

This inspection is to check the LIN communication line in the power distribution box assembly that connects the wire harness to the built-in main body ECU (multiplex network body ECU).


Standard Resistance:
Tester Connection Condition Specified Condition
8B-37 - 8B-36 Always 10 kΩ or higher
8B-37 - 8C-41 Always 10 kΩ or higher
8F-17 - 8B-36 Always 10 kΩ or higher
8F-17 - 8C-41 Always 10 kΩ or higher
MB-15 (LIN2) - Other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

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

NG

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

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


25.CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
a.

Install the main body ECU (multiplex network body ECU) to the power distribution box assembly.


b.

Connect all power distribution box assembly connectors.


c.

Using the GTS, check the waveform.

C462580C01
1.688,1.771 2.104,2.021 0.417,0.25 1.125,3.323 1.542,3.573 0.417,0.25 0.167,0.135 0.479,0.292 0.313,0.156 10 false *a 4.698,0.917 5.01,1.073 0.313,0.156 10 false *b 4.458,2.583 5.146,2.979 0.688,0.396 10 false GND 1.823,1.833 2.26,2.125 0.438,0.292 10 false 8B 1.25,3.354 1.938,3.75 0.688,0.396 10 false 8F
*a Component with harness connected
(Power Distribution Box Assembly) 		*b Waveform


HINT:

This inspection is to check the LIN communication line in the power distribution box assembly that connects the wire harness to the built-in main body ECU (multiplex network body ECU).


OK:
Tester Connection Switch Condition Tool Setting Specified Condition
8B-37 - Body ground Ignition switch ON 2 V/DIV., 200 ms/DIV. Pulse generation
(See waveform)
8F-17 - Body ground Ignition switch ON 2 V/DIV., 200 ms/DIV. Pulse generation
(See waveform)



Result:
Proceed to
OK
NG



OK

USE SIMULATION METHOD TO CHECK

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


NG

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

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


26.CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY (DRIVER DOOR))
a.

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

Standard Resistance:
Tester Connection Condition Specified Condition
L7-16 (LIN2) - Body ground Always Below 1 Ω
L7-16 (LIN2) - Other terminals Always Below 1 Ω


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