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Home >> Honda >> 2009 >> Odyssey EX >> Repair and Diagnosis (Single Page) >> Body & Frame >> Seats >> Driver Position Memory System (DPMS) >> Power Seat Control Unit Input Test
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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 to LOCK (0).
  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 connector views are from wire side of female terminals.
    Fig 1: Identifying Power Seat Control Unit
    G05526945Courtesy 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. Reconnect the connectors to the power seat control unit, and 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 CAVITY CHART

      Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
      A9
      .
      B4
      .
      B18      		 BRN Under all conditions Measure the voltage to ground:
      There should be less than 1 V.
      • Poor ground (G602)
      • An open in the wire
      A35 YEL Ignition switch ON (II) Measure the voltage to ground:
      There should be battery voltage.
      • Blown No. 21 (7.5 A) fuse in the driver's under-dash fuse/relay box
      • An open in the wire
      A37 WHT/RED 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 (7.5 A) fuse in the driver's under-dash fuse/relay box
      • An open in the wire
      B1 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 driver's under-dash fuse/relay box
      • An open in the wire
      B8 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 driver's under-dash fuse/relay box
      • An open in the wire
      A16 GRN Under all conditions Attach to ground:
      The driving position memory switch indicator 1 should come on.
      • Blown No. 7 (7.5 A) fuse in the driver's under-dash fuse/relay box
      • Faulty driving position memory switch
      • An open in the wire
      A17 RED Under all conditions Attach to ground:
      The driving position memory switch indicator 2 should come on.
      • Blown No. 7 (7.5 A) fuse in the driver's under-dash fuse/relay box
      • Faulty driving position memory switch
      • An open in the wire
      A18 BLU Press No. 1 button of the driving position memory switch Measure the voltage to ground:
      There should be less than 1 V.
      • Poor ground (G601)
      • Faulty driving position memory switch
      • An open in the wire
      A19 BLU/YEL Press No. 2 button of the driving position memory switch Measure the voltage to ground:
      There should be less than 1 V.
      • Poor ground (G601)
      • Faulty driving position memory switch An open in the wire
      A20 WHT Press the MEMO button of the driving position memory switch Measure the voltage to ground:
      There should be less than 1 V.
      • Poor ground (G601)
      • Faulty driving position memory switch
      • An open in the wire
      A31 BLU/BLK Shift lever in P position Measure the voltage to ground:
      There should be less than 1 V.
      • Faulty transmission range switch
      • An open in the wire
      A39 BLK Power mirror control unit connector (24P) and power seat control unit connector A (40P) disconnected Check for continuity between the A39 terminal and the power mirror control unit connector No. 13 terminal:
      There should be continuity.      		 An open in the wire
      Check for continuity between the A39 terminal and body ground:
      There should be no continuity.      		 A short to ground in the wire
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