Dtc B2321 Driver Side Door Ecu Communication Stop

Communication System. Camry. Acv40 Gsv40
Multiplex Communication. Camry. Acv40 Gsv40

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CLEAR DTC

CHECK DTC OUTPUT

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

CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR MOTOR - BATTERY AND BODY GROUND)

REPLACE POWER WINDOW REGULATOR MOTOR (DRIVER SIDE)

CHECK DTC OUTPUT

DTC B2321 Driver Side Door ECU Communication Stop


DESCRIPTION

This DTC is output when LIN communication between the power window regulator motor (Driver side) and main body ECU (Instrument panel junction block) stops for more than 10 seconds.

DTC No.
DTC Detection Condition
Trouble Area
B2321
No communication between power window regulator motor (Driver side) and main body ECU (instrument panel junction block) for more than 10 seconds
  1. Power window regulator motor (Driver side)
  2. Main body ECU (Instrument panel junction block)
  3. Wire harness or connector

WIRING DIAGRAM


Camry. Acv40 Gsv40.Multiplex Communication.Lin Communication System. Dtc B2321 Driver Side Door Ecu Communication Stop


INSPECTION PROCEDURE

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

  1. Clear the DTC (CAMRY_ACV40 RM000002XHS00KX.html).


NEXT


2.CHECK DTC OUTPUT

  1. Recheck for DTC (CAMRY_ACV40 RM000002XHS00KX.html).

    Result:
    Result
    		Proceed to
    B2321 is output
    		A
    B2321 is not output
    		B


B
USE SIMULATION METHOD TO CHECK (CAMRY_ACV40 RM000000UZ104DX.html)
A


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


  1. Disconnect the E8 and I5*1 or H10*2 connectors.

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

    Camry. Acv40 Gsv40.Multiplex Communication.Lin Communication System. Dtc B2321 Driver Side Door Ecu Communication Stop

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E8-10 (LIN2) - I5-9 (LIN)*1
    E8-10 (LIN2) - H10-9 (LIN)*2
    		Always
    		Below 1 Ω
    E8-10 (LIN2) - Body ground
    		Always
    		10 kΩ or higher
    HINT:
    *1: for LHD
    *2: for RHD


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR MOTOR - BATTERY AND BODY GROUND)


    Camry. Acv40 Gsv40.Multiplex Communication.Lin Communication System. Dtc B2321 Driver Side Door Ecu Communication Stop

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    I5-1 (E) - Body ground*1
    H10-1 (E) - Body ground*2
    		Always
    		Below 1 Ω
    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    I5-2 (B) - Body ground*1
    H10-2 (B) - Body ground*2
    		Always
    		11 to 14 V
    HINT:
    *1: for LHD
    *2: for RHD


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.REPLACE POWER WINDOW REGULATOR MOTOR (DRIVER SIDE)

  1. Replace the power window regulator motor (Driver side) (CAMRY_ACV40 RM000002AC904JX.html).


NEXT


6.CHECK DTC OUTPUT

  1. Clear the DTC (CAMRY_ACV40 RM000002XHS00KX.html).

  1. Recheck for DTC.

    Result:
    Result
    		Proceed to
    B2321 is not output
    		A
    B2321 is output
    		B


B
REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)
A

END (POWER WINDOW REGULATOR MOTOR (DRIVER SIDE) IS DEFECTIVE)