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Power Seat 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 power seat (see FRONT SEAT REMOVAL/INSTALLATION ).
    NOTE: Be careful not to scratch the interior trim.
  3. Disconnect the connectors from the power seat control unit (A).
    NOTE: All connectors view are from wire side of female terminals.
    Fig 1: Identifying Power Seat Control Unit And Connector Terminals
    G05462896Courtesy 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 still disconnected, make these input tests at the connectors.
    • 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
      A8(1) BLU/BLK Under all conditions Check for continuity to ground: There should be continuity.
      • Poor ground (G501, G503, G601)
      • An open in the wire
      A20
      B7
      D1      		 BLK
      A9 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
      A10 GRY/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. 6 (7.5 A) fuse in the under-dash fuse/relay box
      • A short to ground in the wire
      • An open in the wire
      B3 WHT/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 under-dash fuse/relay box
      • A short to ground in the wire
      • An open in the wire
      D4 WHT/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 under-dash fuse/relay box
      • A short to ground in the wire
      • An open in the wire
      A14 PNK Under-dash fuse/relay box connector G (6P) disconnected Check for continuity between the A14 terminal and under-dash fuse/relay box connector G (6P) No. 1 terminal:
      There should be continuity.      		 An open in the wire
      Check for continuity between the A14 terminal and body ground:
      There should be no continuity.      		 A short to ground in the wire
      C4 PUR Power mirror control unit connector (26P) disconnected Check for continuity between the C4 terminal and power mirror control unit connector No. 23 terminal:
      There should be continuity end.      		 An open in the wire
      Check for continuity between the C4 terminal and body ground:
      There should be no continuity.      		 A short to ground in the wire
      (1) M/T
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