How to replace Wire Harness Assembly part # W11027902 on your Whirlpool Dishwasher

Introduction

This tutorial provides step-by-step instructions on how to replace the wiring harness assembly (part # W11027902) in your Whirlpool dishwasher. The same instructions apply to various Whirlpool brand dishwashers, including KitchenAid, Maytag, and Jenn-Air. Replacing a damaged wiring harness can restore the functionality of your dishwasher and is a manageable repair for DIY enthusiasts.

Chapter 1: Where to Purchase

• You can purchase the wiring harness assembly from parts.com.
• Ensure you have the correct part for your model; you may need to check the model number on your dishwasher.

Chapter 2: Reasons for Replacement

• The wiring harness connects the dishwasher's electrical components to the main control board, including:
  • Pump motor
  • Thermostat
  • Heating element
  • Water valve
• If any part of the wiring harness is damaged, the entire harness must be replaced as individual sections are not sold separately.

Chapter 3: How to Remove the Old Wiring Harness

1. Disconnect Power:

   • Unplug the dishwasher if it has a power cord.
   • If hardwired, turn off the power at the breaker.

2. Disconnect Drain Hose:

   • Disconnect the drain hose from the sink plumbing or garbage disposal.
   • Feed the drain tube and power cord through the cabinet holes.

3. Turn Off Water Supply:

   • Shut off the water supply valve.

4. Remove Access Panel:

   • Remove the access panel at the bottom of the dishwasher by undoing the retainers. Place a towel or pan below to catch any leaking water.

5. Disconnect Water Supply Line:

   • Remove the water supply line from underneath the dishwasher.

6. Prepare Dishwasher for Removal:

   • Open the dishwasher door and remove the screw securing it to the countertop.
   • If side-mounted, remove screws from the cabinet.
   • Lower the dishwasher's leveling legs if needed.

7. Slide Out the Dishwasher:

   • Carefully slide the dishwasher out from under the countertop, ensuring the power cable and drain tube are fed through.

8. Remove Front Panel:

   • Open the door and remove 10 screws around the perimeter using a T-15 torque bit.
   • Support the panel, close the door gently, and disconnect the electrical connector by pressing the locking tab.
   • Lift the front panel away from the hinges.

9. Disconnect Electrical Connectors:

   • Take a picture of the wiring for reference.
   • Remove the connector brace by prying on the locking tabs, then disconnect the electrical connectors.

10. Disconnect Other Components:

    • Disconnect the door latch, detergent dispenser, and ground wire.
    • Flip the dishwasher onto its back on a soft surface.
    • Remove any remaining electrical connectors from the pump, water valve, and other components.

Chapter 4: Locating Model Tag

• Before purchasing a new wiring harness assembly, locate the model tag on your dishwasher.
• Use this model number to ensure you order the correct part.

Chapter 5: How to Install the New Wiring Harness

1. Install Wiring Harness:

   • Align the control brace with the slots on the control board.
   • Position the new wiring harness so the control board connectors are at the top.

2. Reconnect Electrical Connectors:

   • Reference the earlier photo and reconnect the wiring harness to the control board.
   • Reinstall the connector box and secure it in place.

3. Reconnect Components:

   • Follow the wiring sequence carefully and reconnect all electrical connections including the door latch, detergent dispenser, and ground wires.

4. Reinstall the Dishwasher:

   • Flip the dishwasher back upright.
   • Align the front panel with the door hinges and reconnect the electrical connector.
   • Secure the front panel with screws.

5. Position the Dishwasher:

   • Align the water line with the inlet valve and tape it down.
   • Feed the drain tube and power cord through the cabinet holes.
   • Push the dishwasher back into place and secure it with mounting screws.

6. Reconnect Water and Power:

   • Reconnect the water line to the inlet valve.
   • Reinstall the access panel and reconnect the drain tube.
   • Plug in the dishwasher or reconnect the wires if hardwired.

7. Test the Dishwasher:

   • Restore power and turn on the water supply valve.
   • Run a test cycle to ensure everything is working and check for leaks.

Conclusion

Replacing the wiring harness assembly in your Whirlpool dishwasher can be a straightforward process with the right steps. By following this guide, you can successfully remove the old harness and install a new one. If you encounter any issues during the process, consider seeking help or consulting a professional. Remember to always turn off power and water supplies before performing any repairs.