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Home >> Acura >> 2014 >> TSX V6 >> Repair and Diagnosis >> Body & Frame >> Seats >> Driver Position Memory System (DPMS) (V6) >> Power Seat Control Unit Input Test/Replacement
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Power Seat Control Unit Input Test/Replacement

NOTE:
  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: Identifying 40P Connector And 18P Connector Of Power Seat Control Unit
    G06946946Courtesy 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 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.
    WIRE TEST CONDITION CHART

    Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
    A34 BLK/YEL Ignition switch ON (II) Measure the voltage to ground: There should be battery voltage.
    • Blown No. 2 (7.5 A) fuse in the driver's under-dash fuse/relay box
    • An open or high resistance in the wire
    A36 BLU Under all conditions Measure the voltage to ground: There should be battery voltage.
    • Blown No. 15 (10 A) fuse in the under-hood fuse/relay box
    • An open or high resistance in the wire
    B1 WHT Under all conditions Measure the voltage to ground: There should be battery voltage.
    • Blown No. 3-4 (DR F/B) (60 A) fuse in the under-hood fuse/relay box
    • Blown No. 21 (20 A) fuse in the driver's under-dash fuse/relay box
    • An open or high resistance in the wire
    B8 PUR Under all conditions Measure the voltage to ground: There should be battery voltage.
    • Blown No. 3-4 (DR F/B) (60 A) fuse in the under-hood fuse/relay box
    • Blown No. 19 (20 A) fuse in the driver's under-dash fuse/relay box
    • An open or high resistance in the wire
    A9 BLK/GRN Under all conditions Measure the voltage to ground: There should be less than 0.2 V.
    • Poor ground (G701)
    • An open or high resistance in the ground wire
    B4 BLK/YEL Under all conditions Measure the voltage to ground: There should be less than 0.2 V.
    • Poor ground (G701)
    • An open or high resistance in the ground wire
    B18 BLK Under all conditions Measure the voltage to ground: There should be less than 0.2 V.
    • Poor ground (G701)
    • An open or high resistance in the ground wire
    A26 BLK/BLU Shift lever in P position Measure the voltage to ground: There should be less than 0.2 V.
    • Poor ground (G101) or an open in the ground wire
    • Faulty transmission range switch
    • An open or high resistance in the wire
    Shift lever in any other position than P Measure the voltage to ground: There should be about 5 V.
    • Faulty transmission range switch
    • A short to ground in the wire
    A15 WHT/BLK Under all conditions Measure the voltage to ground: There should be about 5 V.
    • Faulty position sensor
    • A short to ground in the wire
    A10
    .
    A29    		 BLU/WHT
    .
    GRN/BLK    		 Run the recline motor Measure the voltage between terminals A10 (+) and A29 (-): There should be about 2.5 V average.
    • Faulty position sensor
    • An open or high resistance in the wire
    • A short to ground in the wire
    A31
    .
    A29    		 YEL/BLK
    .
    GRN/BLK    		 Run the slide motor Measure the voltage between terminals A31 (+) and A29 (-): There should be about 2.5 V average.
    • Faulty position sensor
    • An open or high resistance in the wire
    • A short to ground in the wire
    A12
    .
    A29    		 BLU/BLK
    .
    GRN/BLK    		 Run the front up-down motor Measure the voltage between terminals A12 (+) and A29 (-): There should be about 2.5 V average.
    • Faulty position sensor
    • An open or high resistance in the wire
    • A short to ground in the wire
    A13
    .
    A29    		 GRN/WHT
    .
    GRN/BLK    		 Run the rear up-down motor Measure the voltage between terminals A13 (+) and A29 (-): There should be about 2.5 V average.
    • Faulty position sensor
    • An open or high resistance in the wire
    • A short to ground in the wire
  6. Turn the ignition switch to LOCK (0)
  7. Disconnect the connectors from the power seat control unit, 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.
    WIRE TEST CONDITION CHART

    Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
    A39 BLK/WHT Under all conditions (disconnect the power window master switch 37P connector) Check for continuity between terminal A39 and power window master switch 37P connector terminal No. 33: There should be continuity. An open in the B-CAN wire
    Under all conditions (disconnect the immobilizer-keyless control unit 7P connector) Check for continuity between terminal A39 and immobilizer-keyless control unit 7P connector terminal No. 3: There should be continuity. An open in the B-CAN wire
    A40 YEL Under all conditions (disconnect the power window master switch 37P connector) Check for continuity between terminal A40 and power window master switch 37P connector terminal No. 35: There should be continuity. An open in the B-CAN wire
    Under all conditions (disconnect the immobilizer-keyless control unit 7P connector) Check for continuity between terminal A40 and immobilizer-keyless control unit 7P connector terminal No. 4: There should be continuity. An open in the B-CAN wire
    A1
    .
    A7    		 BLK/BRN
    .
    RED/WHT    		 Slide switch in FORWARD position Check for continuity between the terminals: There should be continuity.
    • Faulty driver's power seat adjustment switch
    • An open or high resistance in the wire
    A1
    .
    A24    		 BLK/BRN
    .
    ORN    		 Slide switch in BACKWARD position Check for continuity between the terminals: There should be continuity.
    • Faulty driver's power seat adjustment switch
    • An open or high resistance in the wire
    A1
    .
    A6    		 BLK/BRN
    .
    PNK    		 Recline switch in FORWARD position Check for continuity between the terminals: There should be continuity.
    • Faulty driver's power seat adjustment switch
    • An open or high resistance in the wire
    A1
    .
    A23    		 BLK/BRN
    .
    PUR    		 Recline switch in BACKWARD position Check for continuity between the terminals: There should be continuity.
    • Faulty driver's power seat adjustment switch
    • An open or high resistance in the wire
    A1
    .
    A5    		 BLK/BRN
    .
    LT GRN    		 Front up-down switch in UP position Check for continuity between the terminals: There should be continuity.
    • Faulty driver's power seat adjustment switch
    • An open or high resistance in the wire
    A1
    .
    A4    		 BLK/BRN
    .
    RED/BLK    		 Front up-down switch in DOWN position Check for continuity between the terminals: There should be continuity.
    • Faulty driver's power seat adjustment switch
    • An open or high resistance in the wire
    A1
    .
    A22    		 BLK/BRN
    .
    GRN/ORN    		 Rear up-down switch in UP position Check for continuity between the terminals: There should be continuity.
    • Faulty driver's power seat adjustment switch
    • An open or high resistance in the wire
    A1
    .
    A3    		 BLK/BRN
    .
    GRY    		 Rear up-down switch in DOWN position Check for continuity between the terminals: There should be continuity.
    • Faulty driver's power seat adjustment switch
    • An open or high resistance in the wire
    B7
    .
    B17    		 YEL
    .
    LT GRN    		 Under all conditions Connect terminals B1 and B7, and terminals B17 and B4: The seat should slide backward.
    • Faulty slide motor
    • An open or high resistance in the wire
    Connect terminals B1 and B17, and terminals B7 and B4: The seat should slide forward.
    B9
    .
    B11    		 RED
    .
    GRY    		 Under all conditions Connect terminals B1 and B9, and terminals B11 and B4: The seat should recline forward.
    • Faulty recline motor
    • An open or high resistance in the wire
    Connect terminals B1 and B11, and terminals B9 and B4: The seat should recline backward.
    B2
    .
    B10    		 GRN
    .
    BLU    		 Under all conditions Connect terminals B1 and B2, and terminals B10 and B4: The rear of seat should move up.
    • Faulty rear up-down motor
    • An open or high resistance in the wire
    Connect terminals B1 and B16, and terminals B6 and B4: The front of seat should move up.
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