Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC B2312: Driver Side Master Switch ON Stuck; DTC B2315: Passenger Side P/W Switch ON Stuck [06/2016 - ]: Procedure
- CHECK DTC OUTPUT
- Clear the DTCs (Refer to DTC CHECK / CLEAR [06/2016 - ] ).
- Check the DTCs (Refer to DTC CHECK / CLEAR [06/2016 - ]
).RESULT
Result Proceed to DTC B2312 is output A DTC B2315 is output B
Result:
A
REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY
(Refer to REMOVAL [06/2016 - ] )
Result:
B
See step 2
- READ VALUE USING TECHSTREAM
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Enter the following menus: Body Electrical / Master Switch / Data List.
- According to the display on the Techstream, read the Data List.MASTER SWITCH
Tester Display Measurement Item/Range Normal Condition Diagnostic Note P Door P/W Auto SW Front passenger side power window auto switch signal / ON or OFF ON: Front passenger side power window auto up/down switch operated
OFF: Front passenger side power window switch not operated- P Door P/W Up SW Front passenger side power window manual up signal / ON or OFF ON: Front passenger side power window manual up switch operated
OFF: Front passenger side power window switch not operated- P Door P/W Down SW Front passenger side power window manual down signal / ON or OFF ON: Front passenger side power window manual down switch operated
OFF: Front passenger side power window switch not operated- OK
The Techstream display changes normally when master switch is operated.
Result:
NG
REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY
(Refer to REMOVAL [06/2016 - ] )
Result:
OK
See step 3
- CHECK HARNESS AND CONNECTOR (POWER WINDOW MASTER SWITCH ASSEMBLY - POWER WINDOW REGULATOR SWITCH ASSEMBLY)
- Disconnect the E8 power window regulator master switch assembly connector.
- Disconnect the F6 power window regulator switch assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open)
Tester Connection Condition Specified Condition E8-2 (UART) - F6-2 (UART) Always Below 1 Ω Standard Resistance (Check for Short)
Tester Connection Condition Specified Condition E8-2 (UART) - Body ground Always 10 kΩ or higher
Result:
OK
REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY
(Refer to REMOVAL [06/2016 - ] )
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
NO RELATED
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.