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Multimeter Ohms Test for Dishwasher

Testing Your Dishwasher Parts for Continuity Using a Multimeter
Scroll down to find the washer part you'd like to test.


Locate Your Dishwasher Heating Element

Unplug your dryer or turn off power source before attempting any repair or maintenance to avoid risk of electrical shock.
The heating element is located on the inside, bottom of your dishwasher with access through the kickplate or by removing the inner dishwasher door.

Testing Your Dishwasher Heating Element
Unplug your dishwasher or turn off power source to avoid risk of electrical shock. Since most dishwashers are wired directly to your electrical system, you will probably need to switch off the circuit breaker.
Locate the heating element in the dishwasher. You do not have to remove the heating element in order to test it, just be absolutely sure there is no power going to your dishwasher.
Look to see if the coil is damaged or blistering. If it is, then your heating element is bad and needs to be replaced. If it looks fine, continue by testing for continuity with a multimeter.
Set your multimeter to the lowest setting for Ohms of resistance. When using an analog multimeter, calibrate the meter by holding the probes together while adjusting the needle to read 0.
Touch one meter probe to one element terminal, while you touch the other probe to the other terminal.
If the heater is still operational, the multimeter should show a reading of 0 to 50 ohms of resistance.
If there is little or no change in the multimeter reading, then your heating element has burned out and will need to be replaced.

See Dishwasher Heaters for Home Appliance Repair


Locate Your Dishwasher Door Switch
Unplug your washer or turn off power source before attempting any repair or maintenance to avoid risk of electrical shock.
The dishwasher door switch is
either accessible through the the control panel or by removing the inner door of the dishwasher.

Testing Your Dishwasher Door Switch
Unplug your dishwasher or turn off power source to avoid risk of electrical shock. Since most dishwashers are wired directly to your electrical system, you will probably need to switch off the circuit breaker.
Locate the switch from the dishwasher.
There will more than likely be 2 micro switches in your dishwasher door. Label and disconnect the slip on wire connectors from the switch with a needle nose pliers without pulling the wires themselves.
Set your multimeter to the lowest setting for Ohms of resistance. When using an analog multimeter, calibrate the meter by holding the probes together while adjusting the needle to read 0.
Touch one meter probe to one switch terminal, while you touch the other probe to the other terminal. If there are 2 micro switches, test each switch separately. Test one and then the other.
Actuate the dishwasher switch.
If the multimeter shows a reading of 0 ohms of resistance, then the switch is good. If there are 2 switches, both should show a reading of 0 ohms of resistance
If there is little or no change in the multimeter reading, then your switch is bad and will need to be replaced. In the case of 2 switches, if one or both show little or no change in the multimeter reading, then your switch is bad and will need to be replaced.

See Dishwasher Door Switches for Home Appliance Repair


Locate Your Dishwasher Float Switch
Unplug your washer or turn off power source before attempting any repair or maintenance to avoid risk of electrical shock.
The float switch is located behind the dishwasher kickplate just below the float inside the dishwasher tub.

Testing Your Dishwasher Floater Switch
Unplug your dishwasher or turn off power source to avoid risk of electrical shock. Since most dishwashers are wired directly to your electrical system, you will probably need to switch off the circuit breaker.
Remove the switch from the dishwasher.
Label and disconnect the slip on wire connectors from the switch with a needle nose pliers without pulling the wires themselves.
Set your multimeter to the lowest setting for Ohms of resistance. When using an analog multimeter, calibrate the meter by holding the probes together while adjusting the needle to read 0.
Touch one meter probe to one switch terminal, while you touch the other probe to the other terminal.
Actuate the dishwasher switch.
If the multimeter shows a reading of 0 ohms of resistance, then the switch is good.
If there is little or no change in the multimeter reading, then your switch is bad and will need to be replaced.

See Dishwasher Door Switches for Home Appliance Repair


Locate Your Dishwasher Inlet Valve
Unplug your washer or turn off power source before attempting any repair or maintenance to avoid risk of electrical shock.
The inlet valve is accessible through the dishwasher kickplate. It should be in either the right or left corner. Go ahead and check that the hoses are securely connected to the valve and there are no kinks in the hoses which could restrict water flow.

Testing Your Dishwasher Water Inlet Valve
Unplug your dishwasher or turn off power source to avoid risk of electrical shock. Since most dishwashers are wired directly to your electrical system, you will probably need to switch off the circuit breaker.
You don't have to remove the water inlet valve from the dishwasher in order to test it, but be sure there is no power to your dishwasher before doing so.
Locate the water inlet valve in your dishwasher.
Label and disconnect the slip on wire connectors from the water inlet valve with a needle nose pliers without pulling the wires themselves.
Your inlet valve will either have 2 or 4 wires connected to it. 4 wires for valves with two solenoids
Set your multimeter to the lowest setting for Ohms of resistance. When using an analog multimeter, calibrate the meter by holding the probes together while adjusting the needle to read 0.
Touch one meter probe to one solenoid terminal, while you touch the other probe to the other terminal. Do this for each solenoid in the case there are 2.
If the multimeter shows a reading of 0 ohms of resistance, then the valve is good.
If there is little or no change in the multimeter reading, then your valve is bad and will need to be replaced. In the case of 2 solenoids, if either one shows this result, your valve is bad and will need to be replaced.

See Dishwasher Fill Valves for Home Appliance Repair


Locate Your Dishwasher Drain Valve

Unplug your washer or turn off power source before attempting any repair or maintenance to avoid risk of electrical shock.
This step will only apply to GE brands which include General Electric, Hotpoint, RCA or some Kenmore.The dishwasher drain valve is located behind the dishwasher kickplate usually near the motor. If not, find the hose running from either the motor or the dishwasher tub. The hose should lead to the drain valve.

Testing Your Dishwasher Drain Valve
Unplug your dishwasher or turn off power source to avoid risk of electrical shock. Since most dishwashers are wired directly to your electrical system, you will probably need to switch off the circuit breaker.
Before continuing, check to see how many wires your dishwasher motor has. If it has 2 or 3 wires, continue. If it has 4 wires, skip this test because you have a reversing motor and do not have a drain valve.
Locate the drain valve.
Label and disconnect the slip on wire connectors from the switch with a needle nose pliers without pulling the wires themselves.
Set your multimeter to the lowest setting for Ohms of resistance. When using an analog multimeter, calibrate the meter by holding the probes together while adjusting the needle to read 0.
Touch one meter probe to one valve terminal, while you touch the other probe to the other terminal.
If the multimeter shows a reading of 0 to 40 ohms of resistance, then the valve is good. These numbers are approximate. To get exact specs for your appliance, refer to your service manual.
If there is little or no change in the multimeter reading, then your valve is bad and will need to be replaced.

See Dishwasher Drain Valves for Home Appliance Repair


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Disclaimer: The information on these pages in no way guarantee the repair of your appliance. Attempt to repair your appliance at your own risk. If you do not feel comfortably capable attempting repairs of your appliance, call a qualified professional repairman. You can also contact us for technical support at 1-513-232-8500.


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