B2312

WINDSHIELD / WINDOWGLASS: POWER WINDOW CONTROL SYSTEM: B2312: Driver Side Door Master Switch Malfunction

DTC B2312 - Driver Side Door Master Switch Malfunction

DESCRIPTION

The portion of the power window control system that is located in the driver door consists of a power window master switch, regulator, and a motor with an integrated ECU. The driver door power window regulator motor is controlled by the ECU when the power window master switch is operated (models with jam protection).
When the ECU determines that the power window master switch is stuck, DTC B2312 is set.
NOTICE: The power window control system uses a serial communication protocol (LIN) to communicate with the main body ECU. Inspect the communication function by following HOW TO PROCEED WITH TROUBLESHOOTING. Troubleshoot the power window control system after confirming that the communication system is functioning properly.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY




(a) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPLACE POWER WINDOW REGULATOR MASTER SWITCH
OK -- Continue to next step.
2. CHECK WIRE HARNESS (WINDOW REGULATOR MASTER SWITCH - WINDOW REGULATOR MOTOR)




(a) Disconnect the M1 and I5 connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE DRIVER SIDE POWER WINDOW REGULATOR MOTOR ASSEMBLY