Driving Position Memory System Input Test and Function Test (2013-18)

1. Connect the HDS to the data link connector (DLC) - Refer to: How to Troubleshoot the Fuel and Emissions Systems (2013-15), or How to Troubleshoot the A/T System (2013-15), or How to Troubleshoot the Fuel and Emissions Systems (2016-18), or How to Troubleshoot the A/T System (2016-18) .

2. Press the engine start/stop button to select the ON mode.

3. From the BODY ELECTRICAL SYSTEM SELECTION menu, select POWER SEAT/POWER MIRROR, then DTCs.

If DTCs are found, troubleshoot the DTCs using B-CAN System Diagnosis Test Mode A - Refer to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks (2013-15), & Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks (2016-18), .
If no DTCs are found, go to step 4.

4. Exit the DTC mode, and select the DATA LIST from the POWER SEAT/POWER MIRROR TEST MODE MENU

5. Test each input and monitor each output under the condition shown below:

If the data list indication is correct, continue to the next switch. If all switches are OK, go to step 7.
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 vehicle ignition in the ON mode, 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 vehicle ignition in the OFF mode, and indicated terminals disconnected.

Data List Input/Command	Condition: Data List Indication	Control Unit/Terminal Number/Test (If applicable)	Possible cause if desired resultis not obtained
Slide SwitchForward	Slide switch forward: ONSwitch released: OFF	Power seat control unit/B14, B20Slide switch forward: 0 VSwitch released: 5 V	Faulty control unit Faulty switch An open or high resistance in the wire A short in the wire
Slide Switch Backward	Slide switch backward: ONSwitch released: OFF	Power seat control unit/B20, B37Slide switch backward: 0 VSwitch released: 5 V	Faulty control unit Faulty switch An open or high resistance in the wire A short in the wire
Recline Switch Forward	Recline switch forward: ONSwitch released: OFF	Power seat control unit/B15, B20Recline switch forward: 0 VSwitch released: 5 V	Faulty control unit Faulty switch An open or high resistance in the wire A short in the wire
Recline Switch Backward	Recline switch backward: ONSwitch released: OFF	Power seat control unit/B20, B38Recline switch backward: 0 VSwitch released: 5 V	Faulty control unit Faulty switch An open or high resistance in the wire A short in the wire
Front Up-Down Switch Up	Front up-down switch up: ONSwitch released: OFF	Power seat control unit/B16, B20Front up-down switch up: 0 VSwitch released: 5 V	Faulty control unit Faulty switch An open or high resistance in the wire A short in the wire

Data List Input/Command	Condition: Data List Indication	Control Unit/Terminal Number/Test (If applicable)	Possible cause if desired resultis not obtained
Front Up-Down Switch Down	Front up-down switch down: ONSwitch released: OFF	Power seat control unit/B17, B20Front up-down switch down: 0 VSwitch released: 5 V	Faulty control unit Faulty switch An open or high resistance in the wire A short in the wire
Rear Up-Down Switch Up	Rear up-down switch up: ONSwitch released: OFF	Power seat control unit/B20, B39Rear up-down switch up: 0 VSwitch released: 5 V	Faulty control unit Faulty switch An open or high resistance in the wire A short in the wire
Rear Up-Down Switch Down	Rear up-down switch down: ONSwitch released: OFF	Power seat control unit/B18, B20Rear up-down switch down: 0 VSwitch released: 5 V	Faulty control unit Faulty switch An open or high resistance in the wire A short in the wire
Ignition Switch for Power Seat Control	Vehicle ignition ON mode: ONVehicle ignition OFF mode: OFF	Power seat control unit/B27Vehicle ignition ON mode: 12VVehicle ignition OFF mode: 0V	Blown No. B5 (7.5 A) fuse in the under-dash fuse/relay box Faulty control unit An open or high resistance in the wire A short in the wire
ATP Switch	Transmission range switch P position: ONAny other position than P: OFF	Power seat control unit/B35Transmission range switch P: 0 VAny other position than P: 12 V	Faulty control unit Faulty transmission range switch An open or high resistance in the wire A short in the wire
Slide Sensor	Seat moving forward or backward: ONSeat not moving: OFF	Power seat control unit/B10Pulses as seat moves: 2.5 V average	Faulty control unit Faulty sensor An open or high resistance in the wire A short in the wire
Front Up-Down Sensor	Seat front moving up/down: ONSeat not moving: OFF	Power seat control unit/B9Pulses as seat moves: 2.5 V average	Faulty control unit Faulty sensor An open or high resistance in the wire A short in the wire
Recline Sensor	Seat-back moving forward or backward: ONSeat not moving: OFF	Power seat control unit/B11Pulses as seat moves: 2.5 V average	Faulty control unit Faulty sensor An open or high resistance in the wire A short in the wire
Rear Up-Down Sensor	Seat rear moving up/down: ONSeat not moving: OFF	Power seat control unit/B8Pulses as seat moves: 2.5 V average	Faulty control unit Faulty sensor An open or high resistance in the wire A short in the wire

6. Exit the DATA LIST and select FUNCTIONAL TESTS

7. Do each of the function tests listed in the table shown. 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 vehicle ignition in the ON mode, and all connectors connected.
- Continuity tests should be done with the vehicle ignition in the OFF mode, 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 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 resultis not obtained
Power Seat:Slide Motor-Full Forward	Seat slides forward	Power seat control unit/A1, A9, A10, A2Disconnect power seat control unit connectors A and B.Connect A1 to A10 and A2 to A9; driver's seat should slide forward.	Faulty motor An open or high resistance in the wire A short in the wire
Power Seat:Slide Motor-Full Backward	Seat slides backward	Power seat control unit/A1, A9, A10, A2Disconnect power seat control unit connectors A and B.Connect A1 to A2 and A10 to A9; driver's seat should slide backward.	Faulty motor An open or high resistance in the wire A short in the wire
Power Seat:Front Up-Down Motor-Full Up	Front of seat moves up	Power seat control unit/A1, A9, A11, A3Disconnect power seat control unit connectors A and B.Connect A1 to A11 and A3 to A9; front of driver's seat should move up.	Faulty motor An open or high resistance in the wire A short in the wire
Power Seat:Front Up-Down Motor-Full Down	Front of seat moves down	Power seat control unit/A1, A9, A11, A3Disconnect power seat control unit connectors A and B.Connect A1 to A3 and A11 to A9; front of driver's seat should move down.	Faulty motor An open or high resistance in the wire A short in the wire
Power Seat:Rear Up-Down Motor-Full Up	Rear of seat moves up	Power seat control unit/A8, A5, A7, A17Disconnect power seat control unit connectors A and B.Connect A8 to A7 and A17 to A5; rear of driver's seat should move up.	Faulty motor An open or high resistance in the wire A short in the wire
Power Seat:Rear Up-DownMotor-Full Down	Rear of seat moves down	Power seat control unit/A8, A5, A7, A17Disconnect power seat control unit connectors A and B.Connect A8 to A17 and A7 to A5; rear of driver's seat should move down.	Faulty motor An open or high resistance in the wire A short in the wire

Function Test	Component and Operation	Control Unit/Terminal Number/Test (If applicable)	Possible cause if desired resultis not obtained
Power Seat:Recline Motor-Full Forward	Seat-back moves forward	Power seat control unit/A8, A5, A18, A16Disconnect power seat control unit connectors A and B.Connect A8 to A18 and A16 to A5; driver's seat-back should move forward.	Faulty motor An open or high resistance in the wire A short in the wire
Power Seat:Recline Motor-Full Backward	Seat-back moves backward	Power seat control unit/A8, A5, A18, A16Disconnect power seat control unit connectors A and B.Connect A8 to A16 and A18 to A5; driver's seat-back should move backward.	Faulty motor An open or high resistance in the wire A short in the wire