2012 Acura RLFACTORY OEM SERVICE PROCEDURE

Power Seat Control Unit Input Test/Replacement

NOTE:
  • SRS components are located in this area. Review the SRS component locations (see COMPONENT LOCATION INDEX ), and the precautions and procedures (see PRECAUTIONS AND PROCEDURES ) before doing repairs or servicing.
  • Power Seat Control Unit appears as "MEMORY SEAT CONTROL UNIT" on HDS display screen.
  1. Turn the ignition switch to LOCK (0).
  2. Remove the driver's seat (see FRONT SEAT REMOVAL/INSTALLATION ).
    NOTE: Be careful not to scratch the interior trim.
  3. Disconnect the 40P connector (A) and 18P connector (B) from the power seat control unit (C).
    Fig 1: Disconnecting 40P Connector And 18P Connector From Power Seat Control Unit
    G07363714Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Inspect the connector and socket terminals to be sure they are all making good contact.
    • If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
    • If the terminals look OK, go to step 5.
  5. With the power seat control unit connectors still disconnected, disconnect power tilt/telescopic steering control unit connector A, and do the following input tests.
    • If any test indicates a problem, find and correct the cause, then recheck the system.
    • If all the input tests prove OK, go to step 6.
    TEST CONDITION AND WIRE REFERENCE CHART

    Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
    A39 BLK Under all conditions Check for continuity between the terminal A39 and power tilt/telescopic steering control unit connector A (16P) terminal No. 11. There should be continuity. An open or high resistance in the wire
  6. Reconnect the connectors and do the following input tests.
    • If any test indicates a problem, find and correct the cause, then recheck the system.
    • If all the input tests prove OK, the control unit must be faulty; replace it.
    TEST CONDITION AND WIRE REFERENCE CHART

    Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
    A9 BLK In all ignition switch positions Measure the voltage to ground: There should be less than 0.2 V.
    • Poor ground(G601)
    • An open or high resistance in the ground wire
    B4 BLK
    B18 BLK
    A35 BLK/YEL Ignition switch ON (II) Measure the voltage to ground: There should be battery voltage.
    • Blown No. 21 (10 A) fuse in the driver's under-dash fuse/relay box
    • An open or high resistance in the wire
    A37 BLU Under all conditions Measure the voltage to ground: There should be battery voltage.
    • Blown No. 15 (40 A) fuse in the under-hood fuse/relay box
    • Blown No. 7 (10 A) fuse in the driver's under-dash fuse/relay box
    • An open or high resistance in the wire
    B1 RED Under all conditions Measure the voltage to ground: There should be battery voltage.
    • Blown No. 20 (40 A) fuse in the under-hood fuse/relay box
    • Blown No. 16 (20 A) fuse in the driver's under-dash fuse/relay box
    • An open or high resistance in the wire
    B8 BLU Under all conditions Measure the voltage to ground: There should be battery voltage.
    • Blown No. 20 (40 A) fuse in the under-hood fuse/relay box
    • Blown No. 14 (20 A) fuse in the driver's under-dash fuse/relay box
    • An open or high resistance in the wire
    A31 BLK/BLU Shift lever in P Measure the voltage to ground: There should be less than 0.2 V.
    • Faulty transmission range switch
    • Poor ground (G101) or an open in the ground wire
    • An open or high resistance in the wire
    Shift lever out Off Measure the voltage to ground: There should be at least 5 V. A short to ground in the wire
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

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.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.