B2327
NETWORKING: LIN COMMUNICATION SYSTEM: B2327, B2328: Lost Communication with Back Door Power Window ECU (Abnormal Power Supply)
B2328 - Back Door Power Window ECU Communication Malfunction
DESCRIPTION
* DTC B2327 is stored when LIN communication between the multiplex network door ECU (back door P/W) and back door power window regulator motor assembly stops for 10 seconds or more.
* DTC B2328 is stored when a malfunction in the LIN communication bus between the multiplex network door ECU (back door P/W) and back door power window regulator motor assembly is detected consecutively 3 times.
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.
PROCEDURE
1. CLEAR DTC
(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.
2. CHECK FOR DTC
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC B2327 or B2328 is not output.
NG -- CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK DOOR ECU - BACK DOOR POWER WINDOW REGULATOR MOTOR)
OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting
3. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK DOOR ECU - BACK DOOR POWER WINDOW REGULATOR MOTOR)
(a) Disconnect the W10 multiplex network door ECU (back door P/W) connector.
(b) Disconnect the W9 back door power window regulator motor assembly 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. REPLACE BACK DOOR POWER WINDOW REGULATOR MOTOR ASSEMBLY
(a) Temporarily replace the back door power window regulator motor assembly with a new or normally functioning one Removal.
NEXT -- Continue to next step.
5. CLEAR DTC
(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.
6. CHECK FOR DTC
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC B2327 or B2328 is not output.
NG -- REPLACE MULTIPLEX NETWORK DOOR ECU Removal
OK -- END (BACK DOOR POWER WINDOW REGULATOR MOTOR IS DEFECTIVE)