Dtc B2325 Lin Communication Bus Malfunction


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CLEAR DTC

CHECK FOR DTC

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - MULTIPLEX NETWORK 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

CLEAR DTC

CHECK FOR DTC

CLEAR DTC

CHECK FOR DTC

DTC B2325 LIN Communication Bus Malfunction


DESCRIPTION

The main body ECU (multiplex network body ECU) intermittently monitors the LIN communication bus between the components related to the doors, double lock door control relay assembly*1 and sliding roof drive gear sub-assembly*2. DTC B2325 is stored when a malfunction in the LIN communication bus between the components related to the doors, double lock door control relay assembly*1 and sliding roof drive gear sub-assembly*2 is detected consecutively 3 times.
  1. *1: w/ Double Locking System
  2. *2: w/ Sliding Roof System

DTC Code
DTC Detection Condition
Trouble Area
B2325
The main body ECU (multiplex network body ECU) detects a malfunction in the LIN communication bus between components related to the doors, double lock door control relay assembly*2 and sliding roof drive gear sub-assembly*3 consecutively 3 times.
  1. Multiplex network master switch assembly
  2. Front power window regulator motor assembly LH
  3. Front power window regulator motor assembly RH
  4. Rear power window regulator motor assembly LH*1
  5. Rear power window regulator motor assembly RH*1
  6. Double lock door control relay*2
  7. Sliding roof drive gear sub-assembly*3
  8. Main body ECU (multiplex network body ECU)
  9. Harness or connector
  1. *1: for 5 Door
  2. *2: w/ Double Locking System
  3. *3: w/ Sliding Roof System

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.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 light 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 troubleshooting for the LIN communication stop DTC. Then perform troubleshooting for DTC B2325.
1.CLEAR DTC

  1. Clear the DTCs (LandCruiser RM000002S8D045X.html).


NEXT


2.CHECK FOR DTC

  1. Check for DTCs (LandCruiser RM000002S8D045X.html).

    OK:
    DTC B2325 is not output.


NG
Go to step 3
OK

USE SIMULATION METHOD TO CHECK (LandCruiser RM000003YMJ00XX.html)

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

  1. Remove the main body ECU (multiplex network body ECU) from the driver side junction block assembly (LandCruiser RM000003WBO05FX.html).

  1. Disconnect the K4*1 or J9*2 multiplex network master switch assembly connector.

    1. *1: for LHD
    2. *2: for RHD

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    for LHD:
    Tester Connection
    		Condition
    		Specified Condition
    A-16 (LIN2) - K4-17 (LIN1)
    		Always
    		Below 1 Ω
    A-16 (LIN2) or K4-17 (LIN1) - Body ground
    		Always
    		10 kΩ or higher
    for RHD:
    Tester Connection
    		Condition
    		Specified Condition
    A-16 (LIN2) - J9-17 (LIN1)
    		Always
    		Below 1 Ω
    A-16 (LIN2) or J9-17 (LIN1) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CLEAR DTC
  1. *1: for LHD
  2. *2: for RHD

  1. Install the main body ECU (multiplex network body ECU) to the driver side junction block assembly (LandCruiser RM000003WBM05CX.html).

  1. Reconnect the K4*1 or J9*2 multiplex network master switch assembly connector.

  1. Disconnect the K7*1 or J7*2 front power window regulator motor assembly connector.

  1. Clear the DTCs (LandCruiser RM000002S8D045X.html).


NEXT


5.CHECK FOR DTC

  1. Check for DTCs (LandCruiser RM000002S8D045X.html).

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


B
REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY (LandCruiser RM0000011QF0H4X.html)
A


6.CLEAR DTC
  1. *1: for LHD
  2. *2: for RHD

  1. Connect the K7*1 or J7*2 front power window regulator motor assembly connector.

  1. Disconnect the K4*1 or J9*2 multiplex network master switch assembly connector.

  1. Clear the DTCs (LandCruiser RM000002S8D045X.html).


NEXT


7.CHECK FOR DTC

  1. Check for DTCs (LandCruiser RM000002S8D045X.html).

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


B
REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY (LandCruiser RM000002STU0ARX.html)
A


8.CLEAR DTC
  1. *1: for LHD
  2. *2: for RHD

  1. Connect the K4*1 or J9*2 multiplex network master switch assembly connector.

  1. Disconnect the K7*1 or J7*2 front power window regulator motor assembly connector.

  1. Clear the DTCs (LandCruiser RM000002S8D045X.html).


NEXT


9.CHECK FOR DTC

  1. Check for DTCs (LandCruiser RM000002S8D045X.html).

    Result
    Result
    		Proceed to
    DTC B2325 is output (for 5 Door)
    		A
    DTC B2325 is output (for 3 Door, w/ Double Locking System)
    		B
    DTC B2325 is output (for 3 Door, w/o Double Locking System, w/ Sliding Roof System)
    		C
    DTC B2325 is output (for 3 Door, w/o Double Locking System, w/o Sliding Roof System)
    		D
    DTC B2325 is not output
    		E


B
Go to step 18

C
Go to step 20

D
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (LandCruiser RM000003WBO05FX.html)

E
OTHERS FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY (LandCruiser RM0000011QF0H4X.html)
A


10.CLEAR DTC

  1. Connect the K7*1 or J7*2 front power window regulator motor assembly connector.

    1. *1: for LHD
    2. *2: for RHD

  1. Disconnect the L4 rear power window regulator motor assembly RH connector.

  1. Clear the DTCs (LandCruiser RM000002S8D045X.html).


NEXT


11.CHECK FOR DTC

  1. Check for DTCs (LandCruiser RM000002S8D045X.html).

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


B
REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH (LandCruiser RM0000011RX0CAX.html)
A


12.CLEAR DTC

  1. Connect the L4 rear power window regulator motor assembly RH connector.

  1. Disconnect the M4 rear power window regulator motor assembly LH connector.

  1. Clear the DTCs (LandCruiser RM000002S8D045X.html).


NEXT


13.CHECK FOR DTC

  1. Check for DTCs (LandCruiser RM000002S8D045X.html).

    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
CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (LandCruiser RM000003WBO05FX.html)

D
REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH (LandCruiser RM0000011RX0CAX.html)
A


14.CLEAR DTC

  1. Connect the M4 rear power window regulator motor assembly LH connector.

  1. Disconnect the G49 double lock door control relay assembly connector.

  1. Clear the DTCs (LandCruiser RM000002S8D045X.html).


NEXT


15.CHECK FOR DTC

  1. Check for DTCs (LandCruiser RM000002S8D045X.html).

    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
    		C


B
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (LandCruiser RM000003WBO05FX.html)

C
REPLACE DOUBLE LOCK DOOR CONTROL RELAY ASSEMBLY (LandCruiser RM000003CM800GX.html)
A


16.CLEAR DTC

  1. w/ Double Locking System:

    1. Connect the G49 double lock door control relay assembly connector.

  1. w/o Double Locking System:

    1. Connect the M4 rear power window regulator motor assembly LH connector.

  1. Disconnect the W2 sliding roof drive gear sub-assembly connector.

  1. Clear the DTCs (LandCruiser RM000002S8D045X.html).


NEXT


17.CHECK FOR DTC

  1. Check for DTCs (LandCruiser RM000002S8D045X.html).

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


B
REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (LandCruiser RM000002LPC02UX.html)
A

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (LandCruiser RM000003WBO05FX.html)

18.CLEAR DTC

  1. Connect the K7*1 or J7*2 front power window regulator motor assembly connector.

    1. *1: for LHD
    2. *2: for RHD

  1. Disconnect the G49 double lock door control relay assembly connector.

  1. Clear the DTCs (LandCruiser RM000002S8D045X.html).


NEXT


19.CHECK FOR DTC

  1. Check for DTCs (LandCruiser RM000002S8D045X.html).

    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
    		C


B
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (LandCruiser RM000003WBO05FX.html)

C
REPLACE DOUBLE LOCK DOOR CONTROL RELAY ASSEMBLY (LandCruiser RM000003CM800GX.html)
A


20.CLEAR DTC

  1. w/ Double Locking System:

    1. Connect the G49 double lock door control relay assembly connector.

  1. w/o Double Locking System:

    1. Connect the K7*1 or J7*2 front power window regulator motor assembly connector.

      1. *1: for LHD
      2. *2: for RHD

  1. Disconnect the W2 sliding roof drive gear sub-assembly connector.

  1. Clear the DTCs (LandCruiser RM000002S8D045X.html).


NEXT


21.CHECK FOR DTC

  1. Check for DTCs (LandCruiser RM000002S8D045X.html).

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


B
REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (LandCruiser RM000002LPC02UX.html)
A

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (LandCruiser RM000003WBO05FX.html)