B2322

MULTIPLEX COMMUNICATION: LIN COMMUNICATION SYSTEM: B2322: Front Passenger Side Door ECU Communication Stop

DTC B2322 - Front Passenger Side Door ECU Communication Stop

DESCRIPTION

This DTC is output when LIN communication between the front power window regulator motor RH and main body ECU stops for 10 seconds or more.






WIRING DIAGRAM





INSPECTION PROCEDURE
NOTE: When using the intelligent tester or Techstream with the power switch OFF to troubleshoot:

Connect the intelligent tester or Techstream to the vehicle, and turn a courtesy switch on and off at 1.5 second intervals until communication between the tester and vehicle begins.
HINT: DTC B2325 is output when the communication between all of the following components and main body ECU stops.

PROCEDURE

1. CLEAR DTC
(a) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.
2. CHECK FOR DTC
(a) Recheck for DTC Reading and Clearing Diagnostic Trouble Codes.

Result:





B -- USE SIMULATION METHOD TO CHECK
A -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - POWER WINDOW REGULATOR MOTOR)





(a) Disconnect the L11 ECU connector.
(b) Disconnect the N3 motor connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR MOTOR - BATTERY AND BODY GROUND)





(a) Disconnect the N3 motor connector.
(b) 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.
5. CHECK FRONT POWER WINDOW REGULATOR MOTOR RH (OPERATION)
(a) Temporarily replace the front power window regulator motor assembly RH with a new or normally functioning one Removal.
(b) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.
6. CHECK FOR DTC
(a) Recheck for DTC Reading and Clearing Diagnostic Trouble Codes.

Result:





B -- REPLACE MAIN BODY ECU
A -- END (FRONT POWER WINDOW REGULATOR MOTOR IS DEFECTIVE)