B2324

MULTIPLEX COMMUNICATION: LIN COMMUNICATION SYSTEM: B2324: Rear Door LH ECU Communication Stop
B2324 - Rear Door LH ECU Communication Stop

DESCRIPTION

This DTC is output when LIN communication between the rear power window regulator motor LH and main body ECU (driver side junction block) stops for 10 seconds or more.





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
When using the Techstream with the engine switch off to troubleshoot:

Connect the Techstream to the vehicle, and turn a courtesy switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins.

HINT
DTC B2325 is output when the communication between all of the following components and main body ECU (driver side junction block) 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.

OK:

DTC B2324 is not output.

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

OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting

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

(a) Disconnect the L11 ECU connector.





(b) Disconnect the O19 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 REAR POWER WINDOW REGULATOR MOTOR LH (BATTERY VOLTAGE AND GROUND)

(a) Disconnect the O19 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. REPLACE REAR POWER WINDOW REGULATOR MOTOR LH

(a) Temporarily replace the rear power window regulator motor LH 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.

OK:

DTC B2324 is not output.

NG -- REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK)

OK -- END (REAR POWER WINDOW REGULATOR MOTOR LH IS DEFECTIVE)