B2325
NETWORKING: LIN COMMUNICATION SYSTEM: B2325: LIN Communication Bus Malfunction
B2325 - LIN Communication Bus Malfunction
DESCRIPTION
The main body ECU intermittently monitors the LIN communication bus between the components related to the door and sliding roof. DTC B2325 is stored when a malfunction in the LIN communication bus between the components related to the door and sliding roof is detected consecutively 3 times.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
When using the Techstream with the ignition switch off to troubleshoot:
Connect the Techstream to the vehicle, and turn a courtesy switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins.
HINT
When DTC B2325 and a LIN communication stop DTC are output simultaneously, first perform the troubleshooting for the LIN communication stop DTC. Then perform the troubleshooting for DTC B2325.
PROCEDURE
1. CLEAR DTC
(a) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.
2. CHECK FOR DTC
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
Result
B -- USE SIMULATION METHOD TO CHECK
A -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH)
(a) Disconnect the H8 multiplex network master switch assembly connector.
(b) Disconnect the H1 front power window regulator motor assembly LH connector.
(c) Measure the resistance and voltage according to the value(s) in the tables below.
Standard Resistance (Check for Open):
Standard Resistance (Check for Short):
Standard Voltage:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - EACH ECU)
Text in Illustration
(a) Disconnect the 2D and 2H instrument panel junction block assembly connectors.
(b) Disconnect the H8 multiplex network master switch assembly connector.
(c) Disconnect the J7 rear power window regulator motor assembly LH connector.
(d) Disconnect the G1 front power window regulator motor assembly RH connector.
(e) Disconnect the I7 rear power window regulator motor assembly RH connector.
(f) Measure the resistance and voltage according to the value(s) in the tables below.
Standard Resistance (Check for Open):
Standard Resistance (Check for Short):
Standard Voltage:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
5. CLEAR DTC
(a) Reconnect the 2D instrument panel junction block assembly connector.
(b) Disconnect the H8 multiplex network master switch assembly connector.
(c) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.
6. CHECK FOR DTC
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
Result
B -- REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY
A -- Continue to next step.
7. CLEAR DTC
(a) Reconnect the H8 multiplex network master switch assembly connector.
(b) Disconnect the H1 front power window regulator motor assembly LH connector.
(c) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.
8. CHECK FOR DTC
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
Result
B -- REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH
A -- Continue to next step.
9. CLEAR DTC
(a) Reconnect the H1 front power window regulator motor assembly LH connector.
(b) Disconnect the G1 front power window regulator motor assembly RH connector.
(c) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.
10. CHECK FOR DTC
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
Result
B -- REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH
A -- Continue to next step.
11. CLEAR DTC
(a) Reconnect the G1 front power window regulator motor assembly RH connector.
(b) Disconnect the I7 rear power window regulator motor assembly RH connector.
(c) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.
12. CHECK FOR DTC
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
Result
B -- REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH
A -- Continue to next step.
13. CLEAR DTC
(a) Reconnect the I7 rear power window regulator motor assembly RH connector.
(b) Disconnect the J7 rear power window regulator motor assembly LH connector.
(c) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.
14. CHECK FOR DTC
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
Result
B -- REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH
A -- Continue to next step.
15. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
Text in Illustration
(a) Remove the instrument panel junction block assembly Removal.
(b) Remove the main body ECU from the instrument panel junction block assembly Removal.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open):
Standard Resistance (Check for Short):
NG -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Removal
OK -- REPLACE MAIN BODY ECU Removal
16. REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY
(a) Replace the multiplex network master switch assembly with a normally functioning part Removal.
(b) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.
17. RECONFIRM DTC OUTPUT
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
Result
B -- INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
A -- END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY MALFUNCTION)
18. REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH
(a) Replace the front power window regulator motor assembly LH with a normally functioning part Removal.
(b) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.
19. RECONFIRM DTC OUTPUT
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
Result
B -- INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
A -- END (FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH MALFUNCTION)
20. REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH
(a) Replace the front power window regulator motor assembly RH with a normally functioning part Removal.
(b) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.
21. RECONFIRM DTC OUTPUT
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
Result
B -- INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
A -- END (FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH MALFUNCTION)
22. REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH
(a) Replace the rear power window regulator motor assembly LH with a normally functioning part Removal.
(b) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.
23. RECONFIRM DTC OUTPUT
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
Result
B -- INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
A -- END (REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH MALFUNCTION)
24. REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH
(a) Replace the rear power window regulator motor assembly RH with a normally functioning part Removal.
(b) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.
25. RECONFIRM DTC OUTPUT
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
Result
B -- INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
A -- END (REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH MALFUNCTION)
26. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
Text in Illustration
(a) Remove the instrument panel junction block assembly Removal.
(b) Remove the main body ECU from the instrument panel junction block assembly Removal.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open):
Standard Resistance (Check for Short):
NG -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Removal
OK -- REPLACE MAIN BODY ECU Removal