2007 Acura TL BaseFACTORY OEM SERVICE PROCEDURE

Power Mirror Control Unit Input Test

NOTE: Before troubleshooting the DPMS, troubleshoot the multiplex integrated control system first using B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).
  1. Turn the ignition switch OFF.
  2. Remove the driver's dashboard lower cover (see DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTALLATION ).
  3. Disconnect the 26P connector (A) from the power mirror control unit (B).
    Fig 1: Identifying Power Mirror Control Unit 26P Connector
    G05462897Courtesy 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 connector still disconnected, make these input tests at the connector.
    • 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.
      WIRE TEST CONDITION REFERENCE

      Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
      25 BLK Under all conditions Check for continuity to ground:
      There should be continuity.
      • Poor ground (G501)
      • An open in the wire
      12 YEL/GRN Ignition switch ON (II) Measure the voltage to ground:
      There should be battery voltage.
      • Blown No. 20 (15 A) fuse in the under-dash fuse/relay box
      • A short to ground in the wire
      • An open in the wire
      13 WHT/RED Under all conditions Measure the voltage to ground:
      There should be battery voltage.
      • Blown No. 7 (7.5 A) fuse in the under-dash fuse/relay box
      • A short to ground in the wire
      • An open in the wire
      26 GRY/BLU Under all conditions Measure the voltage to ground:
      There should be battery voltage.
      • Blown No. 6 (7.5 A) fuse in the under-dash fuse/relay box
      • A short to ground in the wire
      • An open in the wire
      23 PUR Power seat control unit connector C(12P) disconnected Check for continuity between the No. 23 terminal and power seat control unit connector C (12P) No. 4 terminal: There should be continuity. An open in the wire
      Check for continuity between the No. 23 terminal and body ground: There should be no continuity. A short to ground in the wire
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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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