B2325

MULTIPLEX COMMUNICATION: LIN COMMUNICATION SYSTEM: B2325: LIN Communication Bus Malfunction
B2325 - LIN Communication Bus Malfunction

DESCRIPTION

The main body ECU (instrument panel junction block assembly) monitors communication between all the ECUs connected to the door bus lines. When the main body ECU (instrument panel 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.





* *: w/ Sliding Roof System

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 (MAIN BODY ECU - EACH ECU)

(a) Disconnect the E8 and Q13* ECU connectors.

*: w/ Sliding Roof System





(b) Disconnect the I5, H9, J4 and K4 motor connectors.

(c) Disconnect the M1 switch connector.

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

Standard resistance:





Standard voltage:





*: w/ Sliding Roof System

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

2. CHECK DTC OUTPUT (POWER WINDOW REGULATOR MOTOR ASSEMBLY (for DRIVER SIDE))

(a) Reconnect the E8 and Q13* ECU connectors.

*: w/ Sliding Roof System

(b) Reconnect the H9, J4 and K4 motor connectors.

(c) Reconnect the M1 switch connector.

(d) Clear the DTC Initial Inspection and Diagnostic Overview.

(e) Recheck for DTCs.

Result:





B -- REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for DRIVER SIDE) Removal
A -- Continue to next step.

3. CHECK DTC OUTPUT (POWER WINDOW REGULATOR MOTOR ASSEMBLY (for FRONT PASSENGER SIDE))

(a) Reconnect the I5 motor connector.

(b) Disconnect the H9 motor connector.

(c) Clear the DTC Initial Inspection and Diagnostic Overview.

(d) Recheck for DTCs.

Result:





B -- REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for FRONT PASSENGER SIDE) Removal
A -- Continue to next step.

4. CHECK DTC OUTPUT (POWER WINDOW REGULATOR MOTOR ASSEMBLY (for REAR RH SIDE))

(a) Reconnect the H9 motor connector.

(b) Disconnect the J4 motor connector.

(c) Clear the DTC Initial Inspection and Diagnostic Overview.

(d) Recheck for DTCs.

Result:





B -- REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for REAR RH SIDE) Removal
A -- Continue to next step.

5. CHECK DTC OUTPUT (POWER WINDOW REGULATOR MOTOR ASSEMBLY (for REAR LH SIDE))

(a) Reconnect the J4 motor connector.

(b) Disconnect the K4 motor connector.

(c) Clear the DTC Initial Inspection and Diagnostic Overview.

(d) Recheck for DTCs.

Result:





B -- REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for REAR LH SIDE) Removal
A -- Continue to next step.

6. CHECK DTC OUTPUT (POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY)

(a) Reconnect the K4 motor connector.

(b) Disconnect the M1 switch connector.

(c) Clear the DTC Initial Inspection and Diagnostic Overview.

(d) Recheck for DTCs.

Result:





C -- REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY

B -- REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)
A -- Continue to next step.

7. CHECK DTC OUTPUT (SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY))

(a) Reconnect the M1 switch connector.

(b) Disconnect the Q13 ECU connector.

(c) Clear the DTC Initial Inspection and Diagnostic Overview.

(d) Recheck for DTCs.

Result:





B -- REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) Removal

A -- REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)