B2325
NETWORKING: LIN COMMUNICATION SYSTEM: B2325: LIN Communication Bus Malfunction
B2325 - LIN Communication Bus Malfunction
DESCRIPTION
The main body ECU (driver side junction block assembly) monitors communication between all the ECUs connected to the door bus lines. When the main body ECU (driver side junction block assembly) 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.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
* When the sliding roof ECU (sliding roof drive gear sub-assembly) is replaced or removed and reinstalled, it requires initialization Programming and Relearning.
* When a power window regulator motor assembly is replaced or removed and reinstalled, it requires initialization Programming and Relearning.
* When using the Techstream to troubleshoot with the ignition switch off:
Connect the Techstream to the DLC3, and turn the courtesy switch on and off at 1.5-second intervals until communication between the Techstream and vehicle begins.
PROCEDURE
1. CHECK HARNESS AND CONNECTOR (MASTER SWITCH - DRIVER SIDE POWER WINDOW REGULATOR MOTOR)
(a) Disconnect the I6 switch connector.
(b) Disconnect the I4 motor connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - EACH ECU)
(a) Disconnect the D48 and P4 ECU connectors.
Text in Illustration
(b) Disconnect the H4, J2 and K2 motor connectors.
(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.
3. CHECK DTC OUTPUT (POWER WINDOW REGULATOR MOTOR ASSEMBLY (for DRIVER SIDE))
(a) Reconnect the D48 and P4 ECU connectors.
(b) Reconnect the H4, J2 and K2 motor connectors.
(c) Reconnect the I6 switch connector.
(d) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
(e) Recheck for DTCs.
Result:
B -- REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for DRIVER SIDE) Removal
A -- Continue to next step.
4. CHECK DTC OUTPUT (POWER WINDOW REGULATOR MOTOR ASSEMBLY (for FRONT PASSENGER SIDE))
(a) Reconnect the I4 motor connector.
(b) Disconnect the H4 motor connector.
(c) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
(d) Recheck for DTCs.
Result:
B -- REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for FRONT PASSENGER SIDE) Removal
A -- Continue to next step.
5. CHECK DTC OUTPUT (POWER WINDOW REGULATOR MOTOR ASSEMBLY (for REAR RH SIDE))
(a) Reconnect the H4 motor connector.
(b) Disconnect the J2 motor connector.
(c) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
(d) Recheck for DTCs.
Result:
B -- REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for REAR RH SIDE) Removal
A -- Continue to next step.
6. CHECK DTC OUTPUT (POWER WINDOW REGULATOR MOTOR ASSEMBLY (for REAR LH SIDE))
(a) Reconnect the J2 motor connector.
(b) Disconnect the K2 motor connector.
(c) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
(d) Recheck for DTCs.
Result:
B -- REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for REAR LH SIDE) Removal
A -- Continue to next step.
7. CHECK DTC OUTPUT (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY)
(a) Reconnect the K2 motor connector.
(b) Disconnect the I6 switch connector.
(c) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
(d) Recheck for DTCs.
Result:
B -- REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Removal
A -- Continue to next step.
8. CHECK DTC OUTPUT (SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY))
(a) Reconnect the I6 switch connector.
(b) Disconnect the P4 ECU connector.
(c) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
(d) Recheck for DTCs.
Result:
B -- REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) Removal
A -- REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Removal