B2325

MULTIPLEX COMMUNICATION: 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 output when a malfunction in the LIN communication bus between the components related to the door and sliding roof is detected consecutively 3 times.





HINT
*: w/ Sliding Roof System

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
When using the Techstream with the power 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 tester 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) Recheck for DTC Reading and Clearing Diagnostic Trouble Codes.

Result





B -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting
A -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - MASTER SWITCH ASSEMBLY)





(a) Disconnect the L11 ECU connector.

(b) Disconnect the N13 master switch connector.

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

Standard resistance:





Standard voltage:





NG -- CLEAR DTC

OK -- REPLACE MAIN BODY ECU

4. CLEAR DTC

(a) Reconnect the L11 ECU connector.

(b) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.

NEXT -- Continue to next step.

5. CHECK FOR DTC

(a) Disconnect the N13 master switch connector.

(b) Recheck for DTC Reading and Clearing Diagnostic Trouble Codes.

Result





B -- REPLACE MASTER SWITCH ASSEMBLY Removal
A -- Continue to next step.

6. CLEAR DTC

(a) Reconnect the N13 master switch connector.

(b) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.

NEXT -- Continue to next step.

7. CHECK FOR DTC

(a) Disconnect the N11 motor connector.

(b) Recheck for DTC Reading and Clearing Diagnostic Trouble Codes.

Result





B -- REPLACE FRONT POWER WINDOW REGULATOR MOTOR LH Removal
A -- Continue to next step.

8. CLEAR DTC

(a) Reconnect the N11 motor connector.

(b) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.

NEXT -- Continue to next step.

9. CHECK FOR DTC

(a) Disconnect the N3 motor connector.

(b) Recheck for DTC Reading and Clearing Diagnostic Trouble Codes.

Result





B -- REPLACE FRONT POWER WINDOW REGULATOR MOTOR RH Removal
A -- Continue to next step.

10. CLEAR DTC

(a) Reconnect the N3 motor connector.

(b) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.

NEXT -- Continue to next step.

11. CHECK FOR DTC

(a) Disconnect the O8 motor connector.

(b) Recheck for DTC Reading and Clearing Diagnostic Trouble Codes.

Result





B -- REPLACE REAR POWER WINDOW REGULATOR MOTOR RH Removal
A -- Continue to next step.

12. CLEAR DTC

(a) Reconnect the O8 motor connector.

(b) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.

NEXT -- Continue to next step.

13. CHECK FOR DTC

(a) Disconnect the O19 motor connector.

(b) Recheck for DTC Reading and Clearing Diagnostic Trouble Codes.

Result





C -- REPLACE REAR POWER WINDOW REGULATOR MOTOR LH Removal

B -- REPAIR OR REPLACE HARNESS OR CONNECTOR
A -- Continue to next step.

14. CLEAR DTC

(a) Reconnect the O19 motor connector.

(b) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.

NEXT -- Continue to next step.

15. CHECK FOR DTC

(a) Disconnect the X5 gear connector.

(b) Recheck for DTC Reading and Clearing Diagnostic Trouble Codes.

Result





B -- REPLACE SLIDING ROOF DRIVE GEAR Disassembly

A -- REPAIR OR REPLACE HARNESS OR CONNECTOR