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.
2012 Acura RLFACTORY OEM SERVICE PROCEDURE
Power Windows
- Component Location Index
- System Description
- Resetting the Power Window Control Unit
- Circuit Diagram
- DTC Troubleshooting
- DTC B1132: Left Rear Power Window Motor A-Phase Pulse Signal Input Error
- DTC B1133: Left Rear Power Window Motor B-Phase Pulse Signal Input Error
- DTC B1134: Right Rear Power Window Motor A-Phase Pulse Signal Input Error
- DTC B1135: Right Rear Power Window Motor B-Phase Pulse Signal Input Error
- DTC B1136: Internal Right Rear Power Window Sub Switch Malfunction; DTC B1148: Internal Left Rear Power Window Sub Switch Malfunction
- DTC B1147: Left Rear Window Position Data Error; DTC B1149: Right Rear Window Position Data Error
- DTC B2175: Driver's Power Window Motor A-Phase Pulse Signal Input Error
- DTC B2176: Driver's Power Window Motor B-Phase Pulse Signal Input Error
- DTC B2177: Assistant's Power Window Motor A-Phase Pulse Signal Input Error
- DTC B2178: Assistant's Power Window Motor B-Phase Pulse Signal Input Error
- DTC B2187: UART Communication Error1 (Driver's MPCS Unit From DR Door ECU)
- DTC B2188: UART Communication Error2 (Driver's MPCS Unit From Other Node)
- DTC B2189: Driver's Window Position Data Error
- DTC B2190: Assistant's Window Position Data Error
- DTC B2191: Assistant Door ECU Internal Error (EEPROM Error)
- Driver's MPCS Unit Input Test/Replacement
- Front Passenger's MPCS Unit Input Test/Replacement
- Left Rear Power Window Switch Input Test
- Right Rear Power Window Switch Input Test
- Power Window Motor Test
- Power Window Master Switch Replacement
- Passenger's Power Window Switch Test/Replacement
Factory Service Tools
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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.
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