RM3660EC _57 Power Source / Network _080743 NETWORKING _0600578 LIN COMMUNICATION SYSTEM(except NR Series Engine) C

NETWORKING  LIN COMMUNICATION SYSTEM(except NR Series Engine)  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 DTC Output from
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

·

Power window regulator motor assembly (driver door)

·

Power window regulator motor assembly (front passenger door)

·

Power window regulator motor assembly (rear LH door)

·

Power window regulator motor assembly (rear RH door)

·

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

·

Wire harness or connector


Main Body

*: w/ Sliding Roof System


WIRING DIAGRAM

C496285E05
5.427,0.615 5.833,0.844 0.406,0.229 10 false LIN 5.427,2.125 5.833,2.354 0.406,0.229 10 false LIN2 5.427,2.479 5.833,2.708 0.406,0.229 10 false LIN1 1.281,2.479 1.688,2.708 0.406,0.229 10 false LIN2 5.427,4.229 5.833,4.458 0.406,0.229 10 false LIN 5.438,5.865 5.844,6.094 0.406,0.229 10 false LIN 5.438,7.5 5.844,7.729 0.406,0.229 10 false LIN 4.969,1.146 6.927,1.625 1.958,0.479 10 false Power Window Regulator Motor Assembly (Driver Door) 4.969,0.979 5.844,1.198 0.875,0.219 10 false L2 4.938,2.833 6.969,3.208 2.031,0.375 10 false Multiplex Network Master Switch Assembly 4.979,6.385 6.938,6.854 1.958,0.469 10 false Power Window Regulator Motor Assembly (Rear LH Door) 4.917,8 6.865,8.458 1.948,0.458 10 false Power Window Regulator Motor Assembly (Rear RH Door) 4.479,4.76 7.083,5.156 2.604,0.396 10 false Power Window Regulator Motor Assembly (Front Passenger Door) 0.49,4.281 1.656,4.885 1.167,0.604 10 false Main Body ECU (Multiplex Network Body ECU) 4.938,2.667 5.813,2.885 0.875,0.219 10 false L7 1.74,3.906 2.948,4.531 1.208,0.625 10 false Power Distribution Box Assembly 4.969,6.219 5.844,6.438 0.875,0.219 10 false N2 4.906,7.833 5.521,8.073 0.615,0.24 10 false M2 4.479,4.583 5.354,4.802 0.875,0.219 10 false K2 0.479,4.104 0.844,4.333 0.365,0.229 10 false MB 5.198,0.438 6.073,0.656 0.875,0.219 10 false 9 5.156,1.938 5.438,2.135 0.281,0.198 10 false 16 5.167,2.323 5.396,2.531 0.229,0.208 10 false 17 5.208,4.063 5.438,4.25 0.229,0.188 10 false 9 5.208,5.708 5.448,5.917 0.24,0.208 10 false 9 5.198,7.323 5.385,7.531 0.188,0.208 10 false 9 3,2.479 3.354,2.698 0.354,0.219 10 false 10G 3.031,2.281 3.344,2.5 0.313,0.219 10 false 11 1.677,2.323 2.552,2.542 0.875,0.219 10 false 15 0.635,8.531 2.625,8.813 1.99,0.281 10 false : LIN Communication Line 3,2.948 3.344,3.177 0.344,0.229 10 false 10E 3.021,2.729 3.385,2.927 0.365,0.198 10 false 15*1 1.99,5.865 2.396,6.094 0.406,0.229 10 false MPX1 2.49,5.719 2.729,5.927 0.24,0.208 10 false 7 0.938,6.25 1.396,6.448 0.458,0.198 10 false T12 0.948,6.438 3.177,6.833 2.229,0.396 10 false Sliding Roof ECU (Sliding Roof Drive Gear Sub-assembly)* 0.167,7.948 2.156,8.302 1.99,0.354 10 false *: w/ Sliding Roof System 1.208,3.365 1.615,3.594 0.406,0.229 10 false GND1 1.198,3.646 1.604,3.875 0.406,0.229 10 false GND2 1.677,3.26 2.552,3.479 0.875,0.219 10 false 13 1.688,3.531 2.563,3.75 0.875,0.219 10 false 14 3.01,3.365 3.323,3.594 0.313,0.229 10 false 10F 3.073,3.167 3.385,3.385 0.313,0.219 10 false 1

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 (except NR Series Engine)>REGISTRATION

·

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

Click hereVehicle Exterior>SLIDING ROOF / CONVERTIBLE>SLIDING ROOF SYSTEM (except NR Series Engine)>INITIALIZATION

*: w/ Sliding Roof System


·

Before replacing the main body ECU (multiplex network body ECU), refer to Registration.*

*: w/ Smart Entry and Start System




PROCEDURE

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

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


b.

Clear the DTCs.

Body Electrical > Main Body > Clear DTCs
50002 449

c.

After 10 seconds have elapsed, check if the same DTC is output again.

Body Electrical > Main Body > Trouble Codes
50001 449

Result:
Result Proceed to
DTC B232588 is output A
DTC B232588 is not output B



A

2.CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

B

REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (DRIVER DOOR)

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


2.CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY
a.

Disconnect the L7 multiplex network master switch assembly connector.


b.

Clear the DTCs.

Body Electrical > Main Body > Clear DTCs
50002 449

c.

After 10 seconds have elapsed, check if the same DTC is output again.

Body Electrical > Main Body > Trouble Codes
50001 449

Result:
Result Proceed to
DTC B232588 is output A
DTC B232588 is not output B



A

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

B

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

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


b.

Clear the DTCs.

Body Electrical > Main Body > Clear DTCs
50002 449

c.

After 10 seconds have elapsed, check if the same DTC is output again.

Body Electrical > Main Body > Trouble Codes
50001 449

Result:
Result Proceed to
DTC B232588 is output A
DTC B232588 is not output B



A

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

B

REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (FRONT PASSENGER DOOR)

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


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

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


b.

Clear the DTCs.

Body Electrical > Main Body > Clear DTCs
50002 449

c.

After 10 seconds have elapsed, check if the same DTC is output again.

Body Electrical > Main Body > Trouble Codes
50001 449

Result:
Result Proceed to
DTC B232588 is output A
DTC B232588 is not output B



A

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

B

REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (REAR RH DOOR)

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


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

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


b.

Clear the DTCs.

Body Electrical > Main Body > Clear DTCs
50002 449

c.

After 10 seconds have elapsed, check if the same DTC is output again.

Body Electrical > Main Body > Trouble Codes
50001 449

Result:
Result Proceed to
DTC B232588 is output A
DTC B232588 is not output B



A

6.SYSTEM CHECK

B

REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (REAR LH DOOR)

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


6.SYSTEM CHECK
a.

Check the vehicle specification.


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



A

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

B

8.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - EACH ECU)
7.CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)
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

c.

After 10 seconds have elapsed, check if the DTC is output.

Body Electrical > Main Body > Trouble Codes
50001 449

Result:
Result Proceed to
DTC B232588 is output A
DTC B232588 is not output B



A

8.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>DISASSEMBLY


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

Disconnect the 10G and 10E* power distribution box assembly assembly connector.

*: w/ Sliding Roof System



b.

Disconnect all connectors shown in the wiring diagram.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
10G-11 - Body ground Always 10 kΩ or higher
10G-11 - Other terminals Always 10 kΩ or higher
10E-15 - Body ground* Always 10 kΩ or higher
10E-15 - Other terminals* Always 10 kΩ or higher


*: w/ Sliding Roof System



Result:
Proceed to
OK
NG



OK

9.INSPECT POWER DISTRIBUTION BOX ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

9.INSPECT POWER DISTRIBUTION BOX ASSEMBLY
B666369C04
1.573,0.688 1.99,0.969 0.417,0.281 5.135,0.281 5.552,0.563 0.417,0.281 5.135,2.073 5.552,2.354 0.417,0.281 1.583,2.063 2,2.344 0.417,0.281 2.063,1.615 1.885,1.615 1.885,1.615 1.885,1.271 false 1.677,0.75 1.99,0.948 0.313,0.198 10 false MB 2.125,1.542 2.74,1.74 0.615,0.198 10 false LIN2 5.229,0.333 5.542,0.531 0.313,0.198 10 false 10G 5.219,2.125 5.531,2.323 0.313,0.198 10 false 10F 1.667,2.115 1.979,2.313 0.313,0.198 10 false 10E 0.177,0.156 0.49,0.354 0.313,0.198 10 false *a
*a Component without harness connected
(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.

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
10G-11 - 10F-1*1 Always 10 kΩ or higher
10G-11 or 10E-15 - 10F-1*2 Always 10 kΩ or higher
MB-15 (LIN2) - Other terminals Always 10 kΩ or higher


*1: w/o Sliding Roof System

*2: w/ Sliding Roof System



Result:
Proceed to
OK
NG



OK

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

NG

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

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


10.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 other than 10G and 10E.

B666370C04
2.063,0.354 2.417,0.563 0.354,0.208 2.167,1.979 2.51,2.198 0.344,0.219 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 4.458,2.458 5.146,2.854 0.688,0.396 10 false GND 2.104,0.375 2.792,0.771 0.688,0.396 10 false 10G 2.208,2 2.896,2.396 0.688,0.396 10 false 10E
*a Component with harness connected
(Power Distribution Box Assembly) 		*b Waveform



c.

Using a GTS, check the 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 Condition Tool Setting Specified Condition
10G-11 - Body ground Ignition switch ON 2 V/DIV., 200 ms/DIV. Pulse generation
(See waveform)
10E-15 - Body ground* Ignition switch ON 2 V/DIV., 200 ms/DIV. Pulse generation
(See waveform)


*: w/ Sliding Roof System



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


11.CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - 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 10 kΩ or higher
L7-16 (LIN2) - 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