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Home >> Honda >> 2014 >> Crosstour EX, 2.4L Eng >> Repair and Diagnosis >> Body & Frame >> Seats >> Driver Position Memory System (DPMS) (4-CYL) >> System Input Test and Function Test
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System Input Test and Function Test

  1. Connect the HDS to the data link connector (DLC).
  2. Turn the ignition switch to ON (II).
  3. From the BODY ELECTRICAL SYSTEM SELECT menu, select POWER SEAT/POWER MIRROR, then DTCs.
  4. Exit the DTC mode, and select DATA LIST from the POWER SEAT/POWER MIRROR TEST MODE MENU.
  5. Test each input and monitor each output under the Data List Indication shown below:
    • If the data list indication is correct, continue to the next switch. If all switches are OK, go to step 6.
    • If the data list indication is not correct, do the appropriate test at the control unit and terminal indicated in the table.
      • Voltage drop tests should be done with the ignition switch in ON (II) and all connectors connected and the meter negative test lead attached to a good body ground, unless specified otherwise.
      • Continuity tests should be done with the ignition switch in LOCK (0) and indicated terminals disconnected.
    Data List Input/Command Condition: Data List Indication Control Unit/Terminal Number/Test (If applicable) Possible cause if desired result is not obtained
    Ignition Switch for Power Seat Control Ignition switch ON (II): ON
    Ignition switch OFF: OFF    		 Power seat control unit/B27 Ignition switch ON (II): 12 V
    • Blown No. B2 (7.5 A) fuse in the driver's under-dash fuse/relay box
    • Faulty driver's under-dash fuse/relay box
    • Faulty power seat control unit
    • An open or high resistance in the wire
    Mirror Select Switch LEFT Mirror select switch in LEFT position: ON
    Select switch in CENTER or RIGHT position: OFF    		 Power mirror control unit/11 Mirror Select switch LEFT: 0 V CENTER or RIGHT: 5 V
    Mirror Select Switch RIGHT Mirror select switch in RIGHT position: ON
    Select switch in CENTER or LEFT position: OFF    		 Power mirror control unit/5 Mirror Select switch RIGHT: 0 V CENTER or LEFT: 5 V
    Mirror Select Switch CENTER Mirror select switch in CENTER position: ON
    Select switch in RIGHT or LEFT position: OFF    		 Power mirror control unit/5, 11 Mirror Select switch CENTER: 5 V each RIGHT or [LEFT]: 11 (5 V) [11 (0 V)]
    Mirror LEFT Switch Mirror select switch in LEFT, then RIGHT Mirror left switch pressed: ON
    Mirror switch released: OFF    		 Power mirror control unit/3, 12, 4, 11, 5 Mirror Select switch LEFT, left switch pressed: 3 (12 V), 12 (12 V), 4 (5 V), 11 (0V), 5 (5V) Mirror Select switch RIGHT, left switch pressed: 3 (12 V), 12 (5 V), 4 (12 V), 11 (5 V), 5 (0V)
    Mirror RIGHT Switch Mirror select switch in LEFT, then RIGHT Mirror right switch pressed: ON
    Mirror switch released: OFF    		 Power mirror control unit/3, 12, 4, 11, 5 Mirror Select switch LEFT, right switch pressed: 3 (0 V), 12 (0 V), 4 (5 V), 11 (12V), 5 (5V) Mirror Select switch RIGHT, right switch pressed: 3 (0 V), 12 (5 V), 4 (0V), 11 (5 V), 5 (12 V)
    Mirror UP Switch Mirror select switch in LEFT, then RIGHT Mirror up switch pressed: ON
    Mirror switch released: OFF    		 Power mirror control unit/3, 12, 4, 11, 5 Mirror Select switch LEFT, up switch pressed: 3 (12 V), 12 (0 V), 4 (5V), 11 (0V), 5 (5V) Mirror Select switch RIGHT, up switch pressed: 3 (12 V), 12 (5 V), 4 (0V), 11 (5V), 5 (0V)
    Mirror DOWN Switch Mirror select switch in LEFT, then RIGHT Mirror down switch pressed: ON
    Mirror switch released: OFF    		 Power mirror control unit/3, 12, 4, 11, 5 Mirror Select switch LEFT, down switch pressed: 3 (0 V), 12 (12 V), 4 (5V), 11 (12V), 5 (5V) Mirror Select switch RIGHT, down switch pressed: 3 (0 V), 12 (5V), 4 (12V), 11 (5V), 5 (12V)
    Slide Switch Forward Slide switch forward: ON
    Switch released: OFF    		 Power seat control unit/B20, B14
    Slide switch forward: 0 V
    Switch released: 5 V
    Slide Switch Backward Slide switch backward: ON
    Switch released: OFF    		 Power seat control unit/B20, B37
    Slide switch backward: 0 V
    Switch released: 5 V
    Recline Switch Forward Recline switch forward: ON
    Switch released: OFF    		 Power seat control unit/B20, B15
    Recline switch forward: 0 V
    Switch released: 5 V
    Recline Switch Backward Recline switch backward: ON
    Switch released: OFF    		 Power seat control unit/B20, B38
    Recline switch backward: 0 V
    Switch released: 5 V
    Front Up-Down Switch Up Front up-down switch up: ON
    Switch released: OFF    		 Power seat control unit/B20, B16
    Front up-down switch up: 0 V
    Switch released: 5 V
    Front Up-Down Switch Down Front up-down switch down: ON
    Switch released: OFF    		 Power seat control unit/B20, B17
    Front up-down switch down: 0 V
    Switch released: 5 V
    Rear Up-Down Switch Up Rear up-down switch up: ON
    Switch released: OFF    		 Power seat control unit/B20, B39
    Rear up-down switch up: 0 V
    Switch released: 5 V
    Rear Up-Down Switch Down Rear up-down switch down: ON
    Switch released: OFF    		 Power seat control unit/B20, B18
    Rear up-down switch down: 0 V
    Switch released: 5 V
    ATP Switch Transmission range switch P position: ON
    Any other position than P: OFF    		 Power seat control unit/B35
    Transmission range switch P: 0 V
    • Faulty transmission range switch
    • Faulty power seat control unit
    • An open or high resistance in the wire
    Slide Sensor Seat moving forward or backward: ON
    Seat not moving: OFF    		 Power seat control unit/B10
    Pulses as seat moves: 2.5 V average
    • Faulty slide position sensor
    • Faulty power seat control unit
    • An open or high resistance in the wire
    Front Up-Down Sensor Seat front moving up/down: ON
    Seat not moving: OFF    		 Power seat control unit/B9
    Pulses as seat moves: 2.5 V average
    • Faulty front up-down position sensor
    • Faulty power seat control unit
    • An open or high resistance in the wire
    Recline Sensor Seat back moving forward or backward: ON
    Seat not moving: OFF    		 Power seat control unit/B11
    Pulses as seat moves: 2.5 V average
    • Faulty recline position sensor
    • Faulty power seat control unit
    • An open or high resistance in the wire
    Rear Up-Down Sensor Seat rear moving up/down: ON
    Seat not moving: OFF    		 Power seat control unit/B8
    Pulses as seat moves: 2.5 V average
    • Faulty rear up-down sensor
    • Faulty power seat control unit
    • An open or high resistance in the wire
    Left Power Mirror Horizontal Sensor Left mirror moves left/right: NORMAL Left mirror stopped: ABNORMAL Power mirror control unit/6, 9 Left mirror moving from full left to full right: 6 (at least 5 V), 9 (about 0.5 V to 4.5 V)
    • Faulty mirror position sensor
    • Faulty power mirror control unit
    • An open or high resistance in the wire
    Left Power Mirror Vertical Sensor Left mirror moves up/down: NORMAL Left mirror stopped: ABNORMAL Power mirror control unit/6, 8 Left mirror moving from full down to full up: 6 (at least 5 V), 8 (about 0.5 V to 4.5 V)
    • Faulty mirror position sensor
    • Faulty power mirror control unit
    • An open or high resistance in the wire
    Right Power Mirror Horizontal Sensor Right mirror moves left/right: NORMAL Right mirror stopped: ABNORMAL Power mirror control unit/6, 17 Right mirror moving from full left to full right: 6 (at least 5 V), 17 (about 0.5 V to 4.5 V)
    • Faulty mirror position sensor
    • Faulty power mirror control unit
    • An open or high resistance in the wire
    Right Power Mirror Vertical Sensor Right mirror moves up/down: NORMAL Right mirror stopped: ABNORMAL Power mirror control unit/6, 18 Right mirror moving from full down to full up: 6 (at least 5 V), 18 (about 0.5 V to 4.5 V)
    • Faulty mirror position sensor
    • Faulty power mirror control unit
    • An open or high resistance in the wire
    DPMS SET Switch Driving position memory switch SET button pushed: ON
    Switch released: OFF    		 Door multiplex control unit/20 Driving position memory switch SET button pushed: 20 (about less than 1 V) SET button released: 20 (at least 5 V)
    • Faulty driving position memory switch
    • Faulty door multiplex control unit
    • An open or high resistance in the wire
    • A short to ground in the wire
    DPMS POSITION 1 Switch Driving position memory switch POSITION 1 button pushed: ON
    Switch released: OFF    		 Door multiplex control unit/22 Driving position memory switch POSITION 1 button pushed: 22 (about less than 1 V) POSITION 1 button released: 22 (at least 5 V)
    • Faulty driving position memory switch
    • Faulty door multiplex control unit
    • An open or high resistance in the wire
    • A short to ground in the wire
    DPMS POSITION 2 Switch Driving position memory switch POSITION 2 button pushed: ON
    Switch released: OFF    		 Door multiplex control unit/23 Driving position memory switch POSITION 2 button pushed: 23 (about less than 1 V) POSITION 2 button released: 23 (at least 5 V)
    • Faulty driving position memory switch
    • Faulty door multiplex control unit
    • An open or high resistance in the wire
    • A short to ground in the wire
  6. Exit the DATA LIST and select FUNCTION TEST.
  7. Do each of the function tests listed in the table. The appropriate output should occur.
    • If the function operates normally, go to the next function test. If all function tests operate normally, the system is OK.
    • If the function does not occur, do the appropriate test at the control unit and terminal indicated in the table.
      • Voltage drop tests should be done with the ignition switch in ON (II) and all connectors connected.
      • Continuity tests should be done with the ignition switch in LOCK (0) and indicated terminals disconnected.
      • Jumper tests should be done according to the instructions indicated.
    • If the test indicates that the component operates normally, but the function will not operate by doing the function test or the normal use of the component, the control unit that operates that function must be faulty; replace it.
    • If the test indicates that the component does not operate normally, check for an open or short in the harnesses between the component and the control unit. If the harness is OK, replace the component.
    Function Test Component and Operation Control Unit/Terminal Number/Test (If applicable) Possible cause if desired result is not obtained
    Power Seat: Slide Motor-Full Forward Seat slides forward Power seat control unit/A1, B12, A2, A10
    Disconnect power seat control unit connectors A and B.
    Connect A1 to A10 and A2 to B12; driver's seat should slide forward.
    • Faulty slide motor
    • An open or high resistance in the wire
    • A short to ground in the wire
    Power Seat: Slide Motor-Full Backward Seat slides backward Power seat control unit/A1, B12, A2, A10
    Disconnect power seat control unit connectors A and B.
    Connect A1 to A2 and A10 to B12; driver's seat should slide backward.
    • Faulty slide motor
    • An open or high resistance in the wire
    • A short to ground in the wire
    Power Seat: Front Up-Down Motor-Full Up Front of seat moves up Power seat control unit/A1, B12, A3, A11
    Disconnect power seat control unit connectors A and B.
    Connect A1 to A11 and A3 to B12; front of driver's seat should move up.
    • Faulty front up-down motor
    • An open or high resistance in the wire
    • A short to ground in the wire
    Power Seat: Front Up-Down Motor-Full Down Front of seat moves down Power seat control unit/A1, B12, A3, A11
    Disconnect power seat control unit connectors A and B.
    Connect A1 to A3 and A11 to B12; front of driver's seat should move down.
    • Faulty front up-down motor
    • An open or high resistance in the wire
    • A short to ground in the wire
    Power Seat: Rear Up-Down Motor-Full Up Rear of seat moves up Power seat control unit/A1, B12, A7, A17
    Disconnect power seat control unit connectors A and B.
    Connect A1 to A7 and A17 to B12; rear of driver's seat should move up.
    • Faulty rear up-down motor
    • An open or high resistance in the wire
    • A short to ground in the wire
    Power Seat: Rear Up-Down Motor-Full Down Rear of seat moves down Power seat control unit/A1, B12, A7, A17
    Disconnect power seat control unit connectors A and B.
    Connect A1 to A17 and A7 to B12; rear of driver's seat should move down.
    • Faulty rear up-down motor
    • An open or high resistance in the wire
    • A short to ground in the wire
    Power Seat: Recline Motor-Full Forward Seat back moves forward Power seat control unit/A1, B12, A16, A18
    Disconnect power seat control unit connectors A and B.
    Connect A1 to A18 and A16 to B12; driver's seat back should move forward.
    • Faulty recline motor
    • An open or high resistance in the wire
    • A short to ground in the wire
    Power Seat: Recline Motor-Full Backward Seat back moves backward Power seat control unit/A1, B12, A16, A18
    Disconnect power seat control unit connectors A and B.
    Connect A1 to A16 and A18 to B12; driver's seat back
    should move backward.
    • Faulty recline motor
    • An open or high resistance in the wire
    • A short to ground in the wire
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