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.
2007 Acura TL BaseFACTORY OEM SERVICE PROCEDURE
Driver Position Memory System (DPMS)
- Component Location Index
- System Description
- Circuit Diagram - Power Seat
- Circuit Diagram - Power Mirror
- General Troubleshooting Information
- System Input Test and Function Test
- Power Seat Control Unit Input Test
- Power Mirror Control Unit Input Test
- DTC Troubleshooting
- DTC B1802: Power Seat Control Unit Internal Error (EEPROM error)
- DTC B1805: Power Seat Control Unit Lost Communication with Gauge Control Module (VSP/NE signal)
- DTC B1806: Power Seat Control Unit Lost Communication with MICU (MICU Message)
- DTC B1807: Power Seat Control Unit Lost Communication with MICU (Door Switch Message)
- DTC B1808: Power Seat Control Unit Lost Communication with Gauge Control Module (A/T Message)
- DTC B1809: Power Seat Control Unit Lost Communication with Door Multiplex Control Unit (Memory Switch Message)
- DTC B1825: Power Seat Slide Motor Pulse Error
- DTC B1826: Power Seat Front Up-down Motor Pulse Error
- DTC B1827: Power Seat Rear Up-down Motor Pulse Error
- DTC B1828: Power Seat Recline Motor Pulse Error
- DTC B1829: A/T P Signal and VSS Signal Mismatch
- DTC B1830: Right Mirror Horizontal Sensor Malfunction
- DTC B1831: Right Mirror Vertical Sensor Malfunction
- DTC B1832: Left Mirror Horizontal Sensor Malfunction
- DTC B1833: Left Mirror Vertical Sensor Malfunction
- DTC B1834: M/T Harness Poor Ground
- DTC B1837: Power Seat Position Memory Recall Error
- DTC B1843: Power Seat Control Unit lost communication with other units (UART communication error)
- Driver's Power Seat Motor Test
- Driving Position Memory Switch Test/Replacement
- Power Seat Adjustment 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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