B2323

NETWORKING: LIN COMMUNICATION SYSTEM: B2323: Rear Door RH ECU Communication Stop
B2323 - Rear Door RH ECU Communication Stop

DESCRIPTION

This DTC is stored when LIN communication between the rear power window regulator motor assembly RH and main body ECU (multiplex network body ECU) stops for 10 seconds or more.

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:
* When using the Techstream with the ignition switch off to troubleshoot:
Connect the Techstream to the vehicle and turn a courtesy light switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins.
* Inspect the fuses and bulbs for circuits related to this system before performing the following inspection procedure.

HINT
When communication between the rear power window regulator motor assembly RH and main body ECU (multiplex network body ECU) stops, DTC B2325 is also stored.

PROCEDURE

1. CLEAR DTC

(a) Clear the DTCs Initial Inspection and Diagnostic Overview.

NEXT -- Continue to next step.

2. CHECK FOR DTC

(a) Check for DTCs Initial Inspection and Diagnostic Overview.

OK:

DTC B2323 is not output.

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

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

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

(a) Remove the main body ECU (multiplex network body ECU) from the driver side junction block assembly Removal.

(b) Disconnect the J2 rear power window regulator motor assembly RH 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 (REAR POWER WINDOW REGULATOR MOTOR RH - BATTERY AND BODY GROUND)

(a) Disconnect the J2 rear power window regulator motor assembly RH connector.

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

Standard Resistance:

Text in Illustration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

5. REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH

(a) Temporarily replace the rear power window regulator motor assembly RH with a new or normally functioning one Removal.

NEXT -- Continue to next step.

6. CLEAR DTC

(a) Clear the DTCs Initial Inspection and Diagnostic Overview.

NEXT -- Continue to next step.

7. CHECK FOR DTC

(a) Check for DTCs Initial Inspection and Diagnostic Overview.

OK:

DTC B2323 is not output.

NG -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Removal

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