Troubleshooting Tests; Main Control Connectors & Pinouts; Main Control Board Connectors/Pinouts - Whirlpool WTW4800XQ Technical Manual

TROUBLESHOOTING TESTS

TEST #1: Main Control
This test checks for incoming and outgoing supplies
to and from the main control. This test assumes
that proper voltage is present at the outlet.
1. Unplug washer or disconnect power.
2. Remove console to access main control.
3. Verify that ALL connectors are inserted
all the way into the main control.
4. Plug in washer or reconnect power.
5. With a voltmeter set to AC, connect black
probe to J7-3 (Neutral) and red probe to J7-1 (L1).
Main Control Board Connectors and Pinouts (Figure 3)
J2
J2-5
J2-4 BLK
J2-3 GRY -5VDC (CIRCUIT GND)
J2-2 PNK RPM INPUT
J2-1 BLU

J3
J3-10 BLK
J3-9 BLK
J3-8
J3-7
J3-6
J3-5 BLU
J3-4 RED HOT VALVE (L1)
J3-3
J3-2
J3-1 WHT NEUTRAL

J4
J4-3 BLU
J4-2
J4-1 BLU

J7
J7-3 BLK
J7-2 GRN CHASSIS GROUND
J7-1 BLK
J4-Pressure Switch *
Diagnostic
LED
J7-Power
Cord
J7
J16-PSC Motor/Drain
= represents pin-1
PAGE 12
FOR SERVICE TECHNICIAN'S USE ONLY
OPEN
+13VDC
SHIFTER POSITION INPUT
TEMP THERMISTOR INPUT (HYBRID)
TEMP THERMISTOR GND (HYBRID)
OPEN
OPEN
OPEN
COLD VALVE (L1)
OPEN
OPEN
PRESS SWITCH INPUT
OPEN
-5VDC (CIRCUIT GND)
NEUTRAL
L1
J16
 If 120VAC is present, go to step 6.
 If 120VAC is not present, check the AC
power cord for continuity (See Figures 9 or 10).
6. Is the "Diagnostic LED" ON or OFF? (See
Figure 3 below for LED location.)
 ON: (+5VDC present) continue to step 7.
 OFF: (+5VDC missing) proceed to step 8.
7. With a voltmeter set to DC, connect black
probe to J2-3 (Circuit Gnd) and red probe to
J2-4 (+13VDC).
 If +13VDC is present, main control
supplies are good.
 If +13VDC is not present, go to step 8.
J10

J11

J15

J16

J2-Shifter
J11
J10
J4
J2
J15
J15-Lid Lock
J10-6 RED ROW 4
J10-5 RED ROW 5
J10-4 RED COLUMN 0
J10-3 RED COLUMN 1
J10-2 RED COLUMN 2
J10-1 RED COLUMN 3
J11-6 BLK ROW 2
J11-5 BLK ROW 3
J11-4 BLK COLUMN 0
J11-3 BLK COLUMN 1
J11-2 BLK COLUMN 2
J11-1 BLK COLUMN 3
J15-4 RED LOCK SWITCH
J15-3 WHT NEUTRAL
J15-2 BLU LID SWITCH INPUT
J15-1 YEL LOCK SWITCH SOLENOID (L1)
J16-7 ORN MOTOR CCW WINDING (L1)
J16-6 RED MOTOR CW WINDING (L1)
J16-5 WHT MOTOR (NEUTRAL)
J16-4 OPEN
J16-3 LT BLU DRAIN PUMP MOTOR (L1)
J16-2 W/ BLU SHIFTER MOTOR (NEUTRAL)
J16-1 BRN SHIFTER MOTOR (L1)
J11-Rotary Encoders
J10-Rotary
Encoders *
J3-Temperature
Sensor/Valves
J3
* Not available on all models
DO NOT REMOVE OR DESTROY