| DTC Code | DTC Name |
|---|---|
| B2325 | LIN Communication Bus Malfunction |
DESCRIPTION
The main body ECU (multiplex network body ECU) monitors communication between all the ECUs connected to the door bus lines. When the main body ECU (multiplex network body ECU) detects errors in communication with all the ECUs connected to the door bus lines at 2.6-second intervals and 3 times in a row, DTC B2325 will be stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B2325 | LIN Communication Bus Malfunction | Main body ECU (multiplex network body ECU) detects errors in communication with the ECUs connected to the door bus lines 3 times in a row. |
|
*1: for Models with Jam Protection Function on 4 Windows
*2: w/ Roof Sunshade System
*3: w/ Double Locking System
WIRING DIAGRAM
for Models with Jam Protection Function on 4 Windows
for LHD
for RHD
for Models with Jam Protection Function on Driver Door Window Only
CAUTION / NOTICE / HINT
Note
Inspect the fuses for circuits related to this system before performing the following procedure.
When a door window regulator assembly is replaced or removed and reinstalled, it requires initialization.
for Models with Jam Protection Function on 4 Windows: Click here
for Models with Jam Protection Function on Driver Door Window Only: Click here
When the roof sunshade ECU (sliding roof drive gear assembly) is replaced or removed and reinstalled, it requires initialization (w/ Roof Sunshade System).
Before performing the inspection, check that DTC B1206, B1249, B1273, B2321, B2322, B2323 or B2324 is not output.
PROCEDURE
SYSTEM CHECK
Check the vehicle specifications.
| Result | ||||||
|---|---|---|---|---|---|---|
|
| B |
|
INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here |
| A |
|
CHECK HARNESS AND CONNECTOR (FRONT DOOR WINDOW REGULATOR ASSEMBLY (for Driver Door) - POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY)
for LHD
Disconnect the H12 power window regulator master switch assembly connector.
Disconnect the H14 front door window regulator assembly (for driver door) connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
for RHD
Disconnect the G3 power window regulator master switch assembly connector.
Disconnect the G5 front door window regulator assembly (for driver door) connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
INSPECT POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY
| *a | Component without harness connected (Power Window Regulator Master Switch Assembly) |
Remove the power window regulator master switch assembly.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| NG |
|
REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY Click here |
| OK |
|
INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
Remove the instrument panel junction block assembly.
for LHD: Click here
for RHD: Click here
| *a | Component without harness connected (Instrument Panel Junction Block Assembly) |
- | - |
Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
Measure the resistance according to the value(s) in the table below.
Tech Tips
This inspection is to check the LIN communication line in the instrument panel junction block assembly that connects the wire harness to the built-in main body ECU (multiplex network body ECU).
| Standard Resistance | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| NG |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY for LHD: Click here |
| OK |
|
CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - EACH ECU)
for LHD
Disconnect the H12 power window regulator master switch assembly connector.
Disconnect the G13 front door window regulator assembly (for front passenger door) connector.
Disconnect the a1 roof sunshade ECU (sliding roof drive gear assembly) connector.*
Disconnect the K3 rear door window regulator assembly (for LH door) connector.
Disconnect the J3 rear door window regulator assembly (for RH door) connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
*: w/ Roof Sunshade System
for RHD
Disconnect the G3 power window regulator master switch assembly connector.
Disconnect the H4 front door window regulator assembly (for front passenger door) connector.
Disconnect the a1 roof sunshade ECU (sliding roof drive gear assembly) connector.*1
Disconnect the E107 double lock door control relay assembly connector.*2
Disconnect the K3 rear door window regulator assembly (for LH door) connector.
Disconnect the J3 rear door window regulator assembly (for RH door) connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
*1: w/ Roof Sunshade System
*2: w/ Double Locking System
| Result | |||
|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK DTC OUTPUT (REAR DOOR WINDOW REGULATOR ASSEMBLY (for LH Door))
for LHD
Reconnect the H12 power window regulator master switch assembly connector.
Reconnect the 3C and 3E instrument panel junction block assembly connector.
Reconnect the H14 front door window regulator assembly (for driver door) connector.
Reconnect the G13 front door window regulator assembly (for front passenger door) connector.
Reconnect the J3 rear door window regulator assembly (for RH door) connector.
Reconnect the a1 roof sunshade ECU (sliding roof drive gear assembly) connector.*
*: w/ Roof Sunshade System
Clear the DTCs.
After 10 seconds have elapsed, check if the same DTC is output again.
for RHD
Reconnect the G3 power window regulator master switch assembly connector.
Reconnect the 3C and 3E instrument panel junction block assembly connector.
Reconnect the G5 front door window regulator assembly (for driver door) connector.
Reconnect the H4 front door window regulator assembly (for front passenger door) connector.
Reconnect the J3 rear door window regulator assembly (for RH door) connector.
Reconnect the a1 roof sunshade ECU (sliding roof drive gear assembly) connector.*1
*1: w/ Roof Sunshade System
Reconnect the E107 double lock door control relay assembly connector.*2
*2: w/ Double Locking System
Clear the DTCs.
After 10 seconds have elapsed, check if the same DTC is output again.
| Result | ||||||
|---|---|---|---|---|---|---|
|
| B |
|
REPLACE REAR DOOR WINDOW REGULATOR ASSEMBLY (for LH Door) Click here |
| A |
|
CHECK DTC OUTPUT (POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY)
for LHD
Reconnect the K3 rear door window regulator assembly (for LH door) connector.
Disconnect the H12 power window regulator master switch assembly connector.
Clear the DTCs.
After 10 seconds have elapsed, check if the same DTC is output again.
for RHD
Reconnect the K3 rear door window regulator assembly (for LH door) connector.
Disconnect the G3 power window regulator master switch assembly connector.
Clear the DTCs.
After 10 seconds have elapsed, check if the same DTC is output again.
| Result | ||||||
|---|---|---|---|---|---|---|
|
| B |
|
REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY Click here |
| A |
|
CHECK DTC OUTPUT (REAR DOOR WINDOW REGULATOR ASSEMBLY (for RH Door))
for LHD
Reconnect the H12 power window regulator master switch assembly connector.
Disconnect the J3 rear door window regulator assembly (for RH door) connector.
Clear the DTCs.
After 10 seconds have elapsed, check if the same DTC is output again.
for RHD
Reconnect the G3 power window regulator master switch assembly connector.
Disconnect the J3 rear door window regulator assembly (for RH door) connector.
Clear the DTCs.
After 10 seconds have elapsed, check if the same DTC is output again.
| Result | ||||||
|---|---|---|---|---|---|---|
|
| B |
|
REPLACE REAR DOOR WINDOW REGULATOR ASSEMBLY (for RH Door) Click here |
| A |
|
CHECK DTC OUTPUT (FRONT DOOR WINDOW REGULATOR ASSEMBLY (for Driver Door))
for LHD
Reconnect the J3 rear door window regulator assembly (for RH door) connector.
Disconnect the H14 front door window regulator assembly (for driver door) connector.
Clear the DTCs.
After 10 seconds have elapsed, check if the same DTC is output again.
for RHD
Reconnect the J3 rear door window regulator assembly (for RH door) connector.
Disconnect the G5 front door window regulator assembly (for driver door) connector.
Clear the DTCs.
After 10 seconds have elapsed, check if the same DTC is output again.
| Result | ||||||
|---|---|---|---|---|---|---|
|
| B |
|
REPLACE FRONT DOOR WINDOW REGULATOR ASSEMBLY (for Driver Door) Click here |
| A |
|
CHECK DTC OUTPUT (FRONT DOOR WINDOW REGULATOR ASSEMBLY (for Front Passenger Door))
for LHD
Reconnect the H14 front door window regulator assembly (for driver door) connector.
Disconnect the G13 front door window regulator assembly (for front passenger door) connector.
Clear the DTCs.
After 10 seconds have elapsed, check if the same DTC is output again.
for RHD
Reconnect the G5 front door window regulator assembly (for driver door) connector.
Disconnect the H4 front door window regulator assembly (for front passenger door) connector.
Clear the DTCs.
After 10 seconds have elapsed, check if the same DTC is output again.
| Result | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
| B |
|
CHECK DTC OUTPUT (DOUBLE LOCK DOOR CONTROL RELAY ASSEMBLY) Click here |
| C |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) for LHD: Click here |
| D |
|
REPLACE FRONT DOOR WINDOW REGULATOR ASSEMBLY (for Front Passenger Door) Click here |
| A |
|
CHECK DTC OUTPUT (ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY))
for LHD
Reconnect the G13 front door window regulator assembly (for front passenger door) connector.
Disconnect the a1 roof sunshade ECU (sliding roof drive gear assembly) connector.
Clear the DTCs.
After 10 seconds have elapsed, check if the same DTC is output again.
for RHD
Reconnect the H4 front door window regulator assembly (for front passenger door) connector.
Disconnect the a1 roof sunshade ECU (sliding roof drive gear assembly) connector.
Clear the DTCs.
After 10 seconds have elapsed, check if the same DTC is output again.
| Result | ||||||||
|---|---|---|---|---|---|---|---|---|
|
| B |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) for LHD: Click here |
| C |
|
REPLACE ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) Click here |
| A |
|
CHECK DTC OUTPUT (DOUBLE LOCK DOOR CONTROL RELAY ASSEMBLY)
Reconnect the a1 roof sunshade ECU (sliding roof drive gear assembly) connector.
Disconnect the E107 double lock door control relay assembly connector.
Clear the DTCs.
After 10 seconds have elapsed, check if the same DTC is output again.
| Result | ||||||
|---|---|---|---|---|---|---|
|
| A |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here |
| B |
|
REPLACE DOUBLE LOCK DOOR CONTROL RELAY ASSEMBLY Click here |
CHECK DTC OUTPUT (DOUBLE LOCK DOOR CONTROL RELAY ASSEMBLY)
Reconnect the H4 front door window regulator assembly (for front passenger door) connector.
Disconnect the E107 double lock door control relay assembly connector.
Clear the DTCs.
After 10 seconds have elapsed, check if the same DTC is output again.
| Result | ||||||
|---|---|---|---|---|---|---|
|
| A |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here |
| B |
|
REPLACE DOUBLE LOCK DOOR CONTROL RELAY ASSEMBLY Click here |
INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
Remove the instrument panel junction block assembly.
for LHD: Click here
for RHD: Click here
| *a | Component without harness connected (Instrument Panel Junction Block Assembly) |
- | - |
Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
Measure the resistance according to the value(s) in the table below.
Tech Tips
This inspection is to check the LIN communication line in the instrument panel junction block assembly that connects the wire harness to the built-in main body ECU (multiplex network body ECU).
| Standard Resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| NG |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY for LHD: Click here |
| OK |
|
CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - EACH ECU)
for LHD
Disconnect the H14 front door window regulator assembly (for driver door) connector.
Disconnect the a1 roof sunshade ECU (sliding roof drive gear assembly) connector.*
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
*: w/ Roof Sunshade System
for RHD
Disconnect the G5 front door window regulator assembly (for driver door) connector.
Disconnect the a1 roof sunshade ECU (sliding roof drive gear assembly) connector.*1
Disconnect the E107 double lock door control relay assembly connector.*2
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
*1: w/ Roof Sunshade System
*2: w/ Double Locking System
| Result | |||
|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK DTC OUTPUT (FRONT DOOR WINDOW REGULATOR ASSEMBLY (for Driver Door))
for LHD
Reconnect the 3C instrument panel junction block assembly connector.
Reconnect the a1 roof sunshade ECU (sliding roof drive gear assembly) connector.*
*: w/ Roof Sunshade System
Clear the DTCs.
After 10 seconds have elapsed, check if the same DTC is output again.
for RHD
Reconnect the 3C instrument panel junction block assembly connector.
Reconnect the a1 roof sunshade ECU (sliding roof drive gear assembly) connector.*1
*1: w/ Roof Sunshade System
Reconnect the E107 double lock door control relay assembly connector.*2
*2: w/ Double Locking System
Clear the DTCs.
After 10 seconds have elapsed, check if the same DTC is output again.
| Result | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
| B |
|
CHECK DTC OUTPUT (DOUBLE LOCK DOOR CONTROL RELAY ASSEMBLY) Click here |
| C |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) for LHD: Click here |
| D |
|
REPLACE FRONT DOOR WINDOW REGULATOR ASSEMBLY (for Driver Door) Click here |
| A |
|
CHECK DTC OUTPUT (ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY))
for LHD
Reconnect the H14 front door window regulator assembly (for driver door) connector.
Disconnect the a1 roof sunshade ECU (sliding roof drive gear assembly) connector.
Clear the DTCs.
After 10 seconds have elapsed, check if the same DTC is output again.
for RHD
Reconnect the G5 front door window regulator assembly (for driver door) connector.
Disconnect the a1 roof sunshade ECU (sliding roof drive gear assembly) connector.
Clear the DTCs.
After 10 seconds have elapsed, check if the same DTC is output again.
| Result | ||||||||
|---|---|---|---|---|---|---|---|---|
|
| B |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) for LHD: Click here |
| C |
|
REPLACE ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) Click here |
| A |
|
CHECK DTC OUTPUT (DOUBLE LOCK DOOR CONTROL RELAY ASSEMBLY)
Reconnect the a1 roof sunshade ECU (sliding roof drive gear assembly) connector.
Disconnect the E107 double lock door control relay assembly connector.
Clear the DTCs.
After 10 seconds have elapsed, check if the same DTC is output again.
| Result | ||||||
|---|---|---|---|---|---|---|
|
| A |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here |
| B |
|
REPLACE DOUBLE LOCK DOOR CONTROL RELAY ASSEMBLY Click here |
CHECK DTC OUTPUT (DOUBLE LOCK DOOR CONTROL RELAY ASSEMBLY)
Reconnect the G5 front door window regulator assembly (for driver door) connector.
Disconnect the E107 double lock door control relay assembly connector.
Clear the DTCs.
After 10 seconds have elapsed, check if the same DTC is output again.
| Result | ||||||
|---|---|---|---|---|---|---|
|
| A |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here |
| B |
|
REPLACE DOUBLE LOCK DOOR CONTROL RELAY ASSEMBLY Click here |