Drive Motor and Wiring Harness

Check the drive motor windings and wiring harness by removing connector P6 from the motor controller. Check for resistance values as shown:

WINDING

RESISTANCE ()

CONTACTS

 

 

 

 

 

Main to FHOT

2 - 4

 

P6 - 2 (RD)

P6 - 4 (WH/BK)

 

 

 

 

 

AUX to FHOT

2 - 4

 

P6 - 1 (YL)

P6 - 4 (WH/BK)

 

 

 

 

 

MAIN to AUX

5 - 7

 

P6 - 2 (RD)

P6 - 1 (YL)

 

 

 

 

 

FTC to FHOT

less than .5

(short)

P6 - 5 (WH/RD)

P6 - 4 (WH/BK)

MAIN to Ground

infinite

P6 - 2 (RD)

Ground screw in top

 

 

 

 

AUX to Ground

infinite

P6 - 1 (YL)

Ground screw in top

If the winding measurements are much higher than shown in the preceding table, a problem exists in the motor winding or in the wiring harness between the motor controller and the motor. Check the resistance of the windings at the motor. Remove the connector at the motor and take measurements as shown:

WINDING

RESISTANCE ()

 

CONTACTS

 

 

 

 

 

 

Main to FHOT

2 - 4

 

RD

 

BK

 

 

 

 

 

 

AUX to FHOT

2 - 4

 

YL

 

BK

 

 

 

 

 

 

MAIN to AUX

5 - 7

 

RD

 

YL

 

 

 

 

 

 

FTC to FHOT

less than .5

(short)

WH

 

BK

 

 

 

 

 

MAIN to Ground

infinite

RD

 

GN/BK

 

 

 

 

 

AUX to Ground

infinite

YL

 

GN/BK

 

 

 

 

 

 

If the resistance is much higher than shown, replace the drive motor.

If the resistance at the drive motor is correct, there is a harness problem between the motor and the motor controller. Replace the wiring harness as necessary.

Automatic Temperature Control Test

This test checks the water inlet solenoids, the temperature sensor and the control board.

Check that the hot and cold water fill valves are working.

NOTE: This test MUST be done with the Automatic Temperature Control (ATC) selected.

If the fill valves are working properly:

Press NORMAL or HEAVY DUTY cycle.

Press the WATER TEMP selector to set the wash water temperature to WARM.

Press START

After water has been introduced into the tub, press STOP/CANCEL once.

Measure the water temperature. At the WARM setting, the ranges should be 90-110°F.

If the temperature is not within this range, check the Automatic Temperature Control Sensor:

Remove connector P13 from the control board.

Measure the resistance between P13-7 and P13-8 at the wiring harness connector. The resis tance should be between 74 Kand 24 K.

57

Page 61
Image 61
Whirlpool GVW9959K-0 manual Automatic Temperature Control Test, Drive Motor and Wiring Harness