Maytag MDB8951AW* Electrical Diagnostics, or death, power to dishwasher before servicing, 1 2 3

Models: MDB7751AW* ADB3500AW MDB8751AW* MDBM755AW* MDB8951AW*

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or death, power to dishwasher before servicing.

or death, power to dishwasher before servicing.

16026394

Resistance Check Points and Values

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Disp. WM

 

 

 

 

 

 

 

 

 

 

 

Thermistor (thru harness only with

 

 

 

 

 

(2K**)

 

Water Valve

 

 

 

 

 

 

 

 

 

 

connector unplugged)***

 

 

 

 

 

 

 

(1.1K**)

 

 

 

 

 

 

 

 

 

 

10K* +/- 3% @ 77oF

 

 

 

 

*Vent WM

 

 

 

(float switch

 

 

 

Drain Motor

 

 

 

 

 

 

 

 

o

F

 

 

 

(1.2K**)

 

 

 

must be closed)

 

 

 

 

(25**)

 

 

 

 

 

2.4K* +/- 6.5% @ 140

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin # 1

2

3

4

5

6

7

8

Pin # 1

2

3

4

Stake Lug

11 10

9

8

7

6

5

4

3

2

1

OR

 

RD RD AQ PU

 

BK

PU

 

TN AQ

 

WH WH

 

YL

 

GY

BU BK BK

 

RD

 

 

 

J5

 

 

 

 

 

J6

 

 

 

 

 

 

 

 

 

 

 

BK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Circuit Board

5

Electrical Diagnostics

WARNING! disconnectTo avoid risk of electrical shock, personal injury,

1

2

3

Use the "Manual Function Test" as described on the electrical schematic sheet to

check components before opening the door to perform continuity testing or replacing parts.

To check continuity from ends of power leads to control board through door switches Resistance Check Points and Values

(A white plastic latch must be inserted in the latch assembly for this test.)

>With one ohm meter lead connected to the white (neutral) power lead, you should have continuity at stake lugs 10 & 11.

>With one ohm meter lead connected to the black (line) power lead, you should have continuity at stake lugs 3 & 4, and pin # 8 on connector J5.

Perform the resistance checks on the component(s) in question at the locations shown on the chart.

*Select Models Only.

**Nominal value for ohms of electrical resistance of component only. These values will vary slightly due to the additional resistance of the wire harness. Greater variation can occur if the component is still warm from being energized during testing.

***A resistor in the control board wired in parallel will result in an approximate reading of 4.0 k ohms with connector J5 plugged in.

Wash Motor (3 - 4**)

Heater

(14.5 - 16.5**)

(High limit t'stat must

be closed)

Always remove power to the unit

before performing any resistance or
continuity checks.

July 2005 ©2005 Maytag Services

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Maytag MDB8951AW*, MDBM755AW* Electrical Diagnostics, or death, power to dishwasher before servicing, Circuit Board, 1 2 3