Dtc B2325 Lin Communication Bus Malfunction

Power Source Network. Land Cruiser. Urj200, 202 Grj200 Vdj200
Networking. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CLEAR DTC

CHECK FOR DTC

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

CLEAR DTC

CHECK FOR DTC

CLEAR DTC

CHECK FOR DTC

CLEAR DTC

CHECK FOR DTC

CLEAR DTC

CHECK FOR DTC

CLEAR DTC

CHECK FOR DTC

CLEAR DTC

CHECK FOR DTC

CLEAR DTC

CHECK FOR DTC

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - FRONT POWER WINDOW REGULATOR MOTOR)

CLEAR DTC

CHECK FOR DTC

CLEAR DTC

CHECK FOR DTC

DTC B2325 LIN Communication Bus Malfunction


DESCRIPTION

The main body ECU (cowl side junction block LH) intermittently monitors the LIN communication bus between the components related to the door, double lock control relay*2 and sliding roof*1. DTC B2325 is stored when a malfunction in the LIN communication bus between the components related to the doors, double lock control relay*2 and sliding roof*1 is detected consecutively 3 times.
HINT:
*1: w/ Sliding Roof System
*2: w/ Double Locking System

DTC Code
DTC Detection Condition
Trouble Area
B2325
The main body ECU (cowl side junction block LH) detects a malfunction in the LIN communication bus between components related to the doors and sliding roof consecutively 3 times.
  1. for Models with jam protection function on 4 windows
    1. Master switch
    2. Front power window regulator motor LH
    3. Front power window regulator motor RH
    4. Rear power window regulator motor LH
    5. Rear power window regulator motor RH
    6. Sliding roof ECU*1
    7. Double lock door control relay*2
    8. Main body ECU (cowl side junction block LH)
    9. Harness or connector
  1. for Models with jam protection function on driver door window only
    1. Front power window regulator motor LH (for LHD)
    2. Front power window regulator motor RH (for RHD)
    3. Double lock door control relay*2
    4. Main body ECU (cowl side junction block LH)
    5. Harness or connector

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System. Dtc B2325 Lin Communication Bus Malfunction


Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System. Dtc B2325 Lin Communication Bus Malfunction


INSPECTION PROCEDURE

NOTICE:
When using the intelligent tester with the ignition switch off to troubleshoot:
Connect the intelligent tester to the vehicle, and turn a courtesy switch on and off at 1.5 second intervals until communication between the intelligent 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.
1.CLEAR DTC

  1. Clear the DTC (Click here).


NEXT


2.CHECK FOR DTC

  1. Recheck for DTCs (Click here).

    Result
    Result
    		Proceed to
    DTC B2325 is output (for Models with Jam Protection Function on 4 Windows)
    		A
    DTC B2325 is output (for Models with Jam Protection Function on Driver Door Window Only)
    		B
    DTC B2325 is not output
    		C


B
Go to step 18

C
USE SIMULATION METHOD TO CHECK (Click here)
A


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


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System. Dtc B2325 Lin Communication Bus Malfunction

  1. Disconnect the E3 ECU connector.

  1. Disconnect the I11*1 or I22*2 switch connector.

    HINT:
    *1: for LHD
    *2: for RHD

  1. Measure the resistance and voltage according to the value(s) in the tables below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E3-10 (LIN2) - I11-17 (LIN1)*1 or I22-17 (LIN1)*2
    		Always
    		Below 1 Ω
    E3-10 (LIN2) - Body ground
    		Always
    		10 kΩ or higher
    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    E3-10 (LIN2) - Body ground
    		Always
    		Below 1 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CLEAR DTC

  1. Reconnect the E3 ECU connector.

  1. Disconnect the I11*1 or I22*2 switch connector.

    HINT:
    *1: for LHD
    *2: for RHD

  1. Clear the DTC (Click here).


NEXT


5.CHECK FOR DTC

  1. Recheck for DTCs (Click here).

    Result
    Result
    		Proceed to
    DTC B2325 is output
    		A
    DTC B2325 is not output
    		B


B
REPLACE MASTER SWITCH
A


6.CLEAR DTC

  1. Reconnect the I11*1 or I22*2 switch connector.

    HINT:
    *1: for LHD
    *2: for RHD

  1. Disconnect the I12 motor connector.

  1. Clear the DTC (Click here).


NEXT


7.CHECK FOR DTC

  1. Recheck for DTCs (Click here).

    Result
    Result
    		Proceed to
    DTC B2325 is output
    		A
    DTC B2325 is not output
    		B


B
REPLACE FRONT POWER WINDOW REGULATOR MOTOR LH (Click here)
A


8.CLEAR DTC

  1. Reconnect the I12 motor connector.

  1. Disconnect the I4 motor connector.

  1. Clear the DTC (Click here).


NEXT


9.CHECK FOR DTC

  1. Recheck for DTCs (Click here).

    Result
    Result
    		Proceed to
    DTC B2325 is output
    		A
    DTC B2325 is not output
    		B


B
REPLACE FRONT POWER WINDOW REGULATOR MOTOR RH (Click here)
A


10.CLEAR DTC

  1. Reconnect the I4 motor connector.

  1. Disconnect the J4 motor connector.

  1. Clear the DTC (Click here).


NEXT


11.CHECK FOR DTC

  1. Recheck for DTCs (Click here).

    Result
    Result
    		Proceed to
    DTC B2325 is output
    		A
    DTC B2325 is not output
    		B


B
REPLACE REAR POWER WINDOW REGULATOR MOTOR LH (Click here)
A


12.CLEAR DTC

  1. Reconnect the J4 motor connector.

  1. Disconnect the J11 motor connector.

  1. Clear the DTC (Click here).


NEXT


13.CHECK FOR DTC

  1. Recheck for DTCs (Click here).

    Result
    Result
    		Proceed to
    DTC B2325 is output (w/ Double Locking System)
    		A
    DTC B2325 is output (w/o Double Locking System, w/ Sliding Roof System)
    		B
    DTC B2325 is output (w/o Double Locking System, w/o Sliding Roof System)
    		C
    DTC B2325 is not output
    		D


B
Go to step 16

C
REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

D
REPLACE REAR POWER WINDOW REGULATOR MOTOR RH (Click here)
A


14.CLEAR DTC

  1. Reconnect the J11 motor connector.

  1. Disconnect the E86 relay connector.

  1. Clear the DTC (Click here).


NEXT


15.CHECK FOR DTC

  1. Recheck for DTC (Click here).

    Result
    Result
    		Proceed to
    DTC B2325 is output (w/ Sliding Roof System)
    		A
    DTC B2325 is output (w/o Sliding Roof System)
    		B
    DTC B2325 is not output (for LHD)
    		C
    DTC B2325 is not output (for RHD)
    		D


B
REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

C
REPLACE DOUBLE LOCK DOOR CONTROL RELAY (Click here)

D
REPLACE DOUBLE LOCK DOOR CONTROL RELAY (Click here)
A


16.CLEAR DTC

  1. Reconnect the E86 relay connector.

  1. Disconnect the R5 ECU connector.

  1. Clear the DTC (Click here).


NEXT


17.CHECK FOR DTC

  1. Recheck for DTCs (Click here).

    Result
    Result
    		Proceed to
    DTC B2325 is output
    		A
    DTC B2325 is not output
    		B


B
REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (Click here)
A

REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

18.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - FRONT POWER WINDOW REGULATOR MOTOR)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System. Dtc B2325 Lin Communication Bus Malfunction

  1. Disconnect the E3 ECU connector.

  1. Disconnect the I12*1 or I4*2 motor connector.

    HINT:
    *1: for LHD
    *2: for RHD

  1. Measure the resistance and voltage according to the value(s) in the tables below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E3-10 (LIN2) - I12-9 (LIN)*1 or I4-9 (LIN)*2
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


19.CLEAR DTC

  1. Reconnect the E3 ECU connector.

  1. Disconnect the I12*1 or I4*2 motor connector.

    HINT:
    *1: for LHD
    *2: for RHD

  1. Clear the DTC (Click here).


NEXT


20.CHECK FOR DTC

  1. Recheck for DTCs (Click here).

    Result
    Result
    		Proceed to
    DTC B2325 is output
    		A
    DTC B2325 is not output (for LHD)
    		B
    DTC B2325 is not output (for RHD)
    		C


B
REPLACE FRONT POWER WINDOW REGULATOR MOTOR LH (Click here)

C
REPLACE FRONT POWER WINDOW REGULATOR MOTOR RH (Click here)
A


21.CLEAR DTC

  1. Reconnect the I12*1 or I4*2 motor connector.

    HINT:
    *1: for LHD
    *2: for RHD

  1. Disconnect the E86 relay connector.

  1. Clear the DTC (Click here).


NEXT


22.CHECK FOR DTC

  1. Recheck for DTCs (Click here).

    Result
    Result
    		Proceed to
    DTC B2325 is output
    		A
    DTC B2325 is not output (for LHD)
    		B
    DTC B2325 is not output (for RHD)
    		C


B
REPLACE DOUBLE LOCK DOOR CONTROL RELAY (Click here)

C
REPLACE DOUBLE LOCK DOOR CONTROL RELAY (Click here)
A

REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)