B2312

WINDSHIELD / WINDOW GLASS: POWER WINDOW CONTROL SYSTEM (w/ Jam Protection Function): B2312: Power Window Switch Malfunction
B2312 - Power Window Switch Malfunction

DESCRIPTION

The power window regulator sub-assembly consists of the motor, regulator and ECU. The power window regulator motor is driven by operating the power window switch. This DTC is output when the ECU built into the regulator motor determines that the power window switch is stuck.

NOTICE:
* When the power window regulator motor is reinstalled or replaced, the power window control system must be initialized.
* After a door glass or a door glass run has been replaced, the jam protection function may operate unexpectedly when the AUTO UP function is used. In such cases, the AUTO UP function can be resumed by repeating the following operation at least 5 times:
(a) Close the power window by fully pulling up the power window switch and holding it in the AUTO UP position.
(b) Open the power window by fully pushing down the power window switch.

Master Switch





Driver Side Motor





Front Passenger Side Motor





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK LIN COMMUNICATION SYSTEM

(a) Check for LIN communication system DTCs related to the power window control system Initial Inspection and Diagnostic Overview.

OK:

LIN communication system DTCs are not output.

NG -- GO TO LIN COMMUNICATION SYSTEM Initial Inspection and Diagnostic Overview
OK -- Continue to next step.

2. CHECK DTC

(a) Check where DTC B2312 is output from.

Result





C -- READ VALUE USING TECHSTREAM (FRONT PASSENGER SIDE MOTOR)

B -- READ VALUE USING TECHSTREAM (DRIVER SIDE MOTOR)
A -- Continue to next step.

3. READ VALUE USING TECHSTREAM (MASTER SWITCH)

(a) Use the Data List to check if the master switch is functioning properly.

Master Switch





OK:

The Techstream display changes normally when master switch is operated.

NG -- REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY Removal

OK -- END (DUE TO KEEPING SWITCH OPERATED FOR 20 SECONDS OR MORE)

4. READ VALUE USING TECHSTREAM (DRIVER SIDE MOTOR)

(a) Use the Data List to check if the driver side motor is functioning properly.

D-Door Motor





OK:

The Techstream display changes normally when master switch is operated.

NG -- CHECK HARNESS AND CONNECTOR (MASTER SWITCH - DRIVER SIDE MOTOR)

OK -- END (DUE TO KEEPING SWITCH OPERATED FOR 20 SECONDS OR MORE)

5. CHECK HARNESS AND CONNECTOR (MASTER SWITCH - DRIVER SIDE MOTOR)

(a) Disconnect the N2 master switch connector.





(b) Disconnect the N12 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 -- REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Removal

6. READ VALUE USING TECHSTREAM (FRONT PASSENGER SIDE MOTOR)

(a) Use the Data List to check if the front passenger side motor is functioning properly.

P-Door Motor





OK:

The Techstream display changes normally when master switch is operated.

NG -- INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY

OK -- END (DUE TO KEEPING SWITCH OPERATED FOR 20 SECONDS OR MORE)

7. INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY

(a) Remove the power window regulator switch assembly Removal.





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

Standard Resistance:





NG -- REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY Removal
OK -- Continue to next step.

8. CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR SWITCH - FRONT PASSENGER SIDE MOTOR)

(a) Disconnect the M10 switch connector.





(b) Disconnect the M11 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 -- REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Removal