B2325
MULTIPLEX COMMUNICATION: LIN COMMUNICATION SYSTEM: B2325: LIN Communication Bus Malfunction
B2325 - LIN Communication Bus Malfunction
DESCRIPTION
The main body ECU (driver side junction block) intermittently monitors the LIN communication bus between the components related to the window and sliding roof. DTC B2325 is stored when a malfunction in the LIN communication bus between the components related to the window and sliding roof is detected consecutively 3 times.
HINT
* *1: for Power Window Control System (w/ Jam Protection Function)
* *2: w/ Sliding Roof System
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 How To Proceed With Troubleshooting
A -- Continue to next step.
3. SYSTEM CHECK
(a) Check the vehicle specifications.
Result
B -- CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - SLIDING ROOF DRIVE GEAR)
A -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (MASTER SWITCH - REGULATOR MOTOR LH)
(a) Disconnect the N2 power window regulator master switch assembly connector.
(b) Disconnect the N12 front power window regulator motor assembly LH connector.
(c) Measure the resistance and voltage according to the value(s) in the table below.
Standard Resistance:
Standard Voltage:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
5. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - EACH ECU)
(a) Disconnect the J2 main body ECU (driver side junction block) connector.
(b) Disconnect the N2 power window regulator master switch assembly connector.
(c) Disconnect the M11 front power window regulator motor assembly RH connector.
(d) w/ Sliding Roof System:
Disconnect the W3 sliding roof drive gear sub-assembly connector.
(e) Measure the resistance and voltage according to the value(s) in the tables below.
Standard Resistance:
HINT
*: w/ Sliding Roof System
Standard Voltage:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
6. SYSTEM CHECK
(a) Check the vehicle specifications.
Result
B -- CLEAR DTC
A -- Continue to next step.
7. CLEAR DTC
(a) Reconnect the J2 main body ECU (driver side junction block) connector.
(b) Reconnect the N2 power window regulator master switch assembly connector.
(c) Reconnect the M11 front power window regulator motor assembly RH connector.
(d) Disconnect the W3 sliding roof drive gear sub-assembly connector.
(e) 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 SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY
A -- Continue to next step.
9. CLEAR DTC
(a) w/ Sliding Roof System:
Reconnect the W3 sliding roof drive gear sub-assembly connector.
(b) Disconnect the N12 power window regulator motor assembly LH 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 LH Removal
A -- Continue to next step.
11. CLEAR DTC
(a) Reconnect the N12 power window regulator motor assembly LH connector.
(b) Disconnect the N2 power window regulator master switch assembly 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 POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY Removal
A -- Continue to next step.
13. CLEAR DTC
(a) Reconnect the N2 power window regulator master switch assembly connector.
(b) Disconnect the M11 power window regulator motor assembly RH 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 FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Removal
A -- REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK)
15. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - SLIDING ROOF DRIVE GEAR)
(a) Disconnect the J2 main body ECU (driver side junction block) connector.
(b) Disconnect the W3 sliding roof drive gear sub-assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
16. CHECK HARNESS AND CONNECTOR (SLIDING ROOF DRIVE GEAR - BATTERY AND BODY GROUND)
(a) Disconnect the W3 sliding roof drive gear sub-assembly connector.
(b) Measure the resistance and voltage according to the value (s) in the table below.
Standard Resistance:
Standard Voltage:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
17. REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY
(a) Temporarily replace the sliding roof drive gear sub-assembly with a new or normally functioning one .
(b) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.
18. CHECK DTC
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
Result
B -- REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK)
A -- END (SLIDING ROOF DRIVE GEAR IS DEFECTIVE)