The timer motor in a dishwasher regulates the length of time power is routed to each component. If the timer motor malfunctions, it can cause issues such as the dishwasher sticking in a cycle, cycle times running too long, or the dishwasher failing to start at all.
Caution: Please read our safety information before attempting any testing or repairs.
Important Safety Notice: Before testing the timer motor, unplug the dishwasher or shut off the power at the fuse box or breaker panel to avoid an electrical shock hazard.
Tools and Materials Needed
- Screwdriver (Phillips and flat-head)
- Multimeter
- Safety gloves
- Labels or masking tape (for labeling wires)
Steps to Test the Timer Motor
Step 1: Safety First
- Turn Off Power: Ensure that the dishwasher is unplugged or the circuit breaker is turned off to prevent any electrical shock.
Step 2: Access the Control Panel
- Locate Screws on the Front: Start with the door closed and locate any screws on the front of the door that must be removed. Usually, there are one or two screws near the latch; do not remove the latch itself unless necessary.
- Open the Door: Open the dishwasher door and remove the screws near the top. Check for screws along the top of the door as well.
Step 3: Remove the Control Panel or Door Panel
- Remove Control Panel Screws: On some dishwashers, the control panel can be removed separately. Start with the screws labeled “B” and attempt to remove the control panel. If the control panel cannot be removed separately, proceed to the next step.
- Remove Door Panel Screws: If the entire door panel needs to be removed, remove the screws along both edges of the door. There may be several screws near the bottom of the door that secure the door to the door hinge mechanism; it should not be necessary to remove these screws.
- Lift the Panel Off: Carefully lift the panel off from the door. The panel may have wires connected, so check before lifting it out too far. If the panel does not lift out, check for other screws.
Step 4: Access the Timer Motor
- Remove Control Panel Cover: Remove the control panel cover to expose the door’s control components. It may be held in place with additional screws or clips.
- Locate the Timer Motor: The timer motor is typically found within the control panel assembly.
Step 5: Disconnect the Wires
- Label the Wires: Use labels or masking tape to mark the wires and their corresponding terminals for proper reconnection later.
- Remove Connectors: Firmly pull the connectors off the terminals. Do not pull on the wires. You may need to use needle-nose pliers to remove the connectors.
Step 6: Test for Continuity
- Set the Multimeter: Set your multimeter to the ohms setting (Ω) to test for continuity.
- Test the Terminals: Touch one probe to each terminal of the timer motor.
- Normal Reading: A functioning timer motor will show continuity (a low resistance reading).
- Faulty Timer Motor: If the multimeter shows no continuity (infinite resistance), the timer motor is faulty and needs to be replaced.
Steps to Replace the Timer Motor (if necessary)
Step 7: Replace the Timer Motor
- Remove the Old Timer Motor: If the timer motor is faulty, remove it by unscrewing any mounting screws and carefully disconnecting any remaining connections.
- Install the New Timer Motor: Install the new timer motor by connecting the wires to the correct terminals and securing it with mounting screws.
Step 8: Reassemble the Dishwasher
- Reattach the Control Panel Cover: Secure the control panel cover with screws or clips.
- Reattach the Door Panel: Replace the door panel by aligning it properly and securing it with screws along the edges.
- Close the Door: Ensure everything is properly aligned and close the dishwasher door.
Step 9: Test the Dishwasher
- Restore Power: Turn the power back on at the fuse box or breaker panel.
- Run a Test Cycle: Run a short test cycle to ensure the dishwasher operates correctly and the new timer motor functions properly.
Tips and Warnings
- Consult the Manual: Always refer to your dishwasher’s user manual for specific instructions related to your model.
- Use Genuine Parts: If the timer motor needs to be replaced, use genuine replacement parts for optimal performance and longevity.
- Seek Professional Help: If you are unsure about any step or if the problem persists, consider seeking help from a professional technician.
By following these steps, you can effectively test and, if necessary, replace the timer motor in your dishwasher, ensuring it operates correctly and efficiently. Regular maintenance and timely repairs will help extend the lifespan of your appliance.
