Main Control Board / Connectors & Pinouts - Whirlpool WTW9500E SERIES Service Manual

J2-12 Yel Fresh Fill Valve
J2-11 Brn Detergent Valve
J2-10 Blu Cold Valve
J2-9 Red Hot Valve
TROUBLESHOOTING TESTS
J2-8 Vlt Oxi Valve (not
on all models)
IMPORTANT: Whenever the washer is tilted for
J2-7 Gry Softener Valve
service or troubleshooting, drain water from the J2-6 Pre Wash (not
on all models)
basket, remove any load items in the basket,
J2-5 Open
MAIN CONTROL BOARD (FIGURE 1)
TROUBLESHOOTING TESTS
and, if equipped, remove bulk dispense drawer.
J2-4 Wht Neutral
J2-3 Open
IMPORTANT: Whenever the washer is tilted for
J2-2 Blk Thermistor
TEST #1: Main Control (ACU)
J2-1 Blk Rtn (VSS)
service or troubleshooting, drain water from the
basket, remove any load items in the basket,
This test checks for incoming and outgoing power
J18 User
and, if equipped, remove bulk dispense drawer.
to and from main control. This test assumes that
Interface
proper voltage is present at the outlet.
TEST #1: Main Control (ACU)
1. Unplug washer or disconnect power.
J6 Lid
2. Remove console to access main control. This test checks for incoming and outgoing power
Lock
to and from main control. This test assumes that
3. Verify that ALL connectors are inserted
proper voltage is present at the outlet.
J19 Basket
all the way into the main control.
1. Unplug washer or disconnect power. Light
4. Plug in washer or reconnect power.
(on some models)
2. Remove console to access main control.
5. With a voltmeter set to AC, connect black
J7 Rex
3. Verify that ALL connectors are inserted probe to J12-3 (Neutral) and red probe to J12-1 (L1).
Connector
all the way into the main control.
If 120VAC is present, go to step 6.
(on some models)
4. Plug in washer or reconnect power.
If 120VAC is not present, check the AC power
= Pin 1
5. With a voltmeter set to AC, connect black cord for continuity (See Figure 11, page 25.)
probe to J12-3 (Neutral) and red probe to J12-1 (L1).
If 120VAC is present, go to step 6.
If 120VAC is not present, check the AC power
Main Control (ACU)
cord for continuity (See Figure 11, page 25.)
MAIN CONTROL BOARD CONNECTORS AND PINOUTS (FIGURE 2)
Board Connectors
and Pinouts (Figure 2)
Main Control (ACU)
J1 Motor
J1-6 Shield HF Return
Board Connectors
J1-5
J1-4 Blk
and Pinouts (Figure 2)
J1-3 Brn
J1-2
J1-1 Red
J1 Motor
J1-6 Shield HF Return
J2 Valves & Thermistor
J1-5
J2-12 Yel
J1-4 Blk
J2-11 Brn
J1-3 Brn
J2-10 Blu
J1-2
J2-9 Red
J1-1 Red
J2-8 Vlt
J2 Valves & Thermistor
J2-7 Gry
J2-12 Yel
J2-6
J2-11 Brn
J2-10 Blu
J2-5
J2-9 Red
J2-4 Wht
J2-8 Vlt
J2-3
J2-2 Blk
J2-7 Gry
J2-1 Blk
J2-6
J2-5
J18 User
J2-4 Wht
Interface
J2-3
J2-2 Blk
J2-1 Blk
J6 Lid
Lock
J18 User
Interface
J19 Basket
Light
J6 Lid
FOR SERVICE TECHNICIAN'S USE ONLY
For Service Technician Use Only
Diagnostic LED
Open
VS3
VS1
Open
VS2
Open
Fresh Fill Valve
VS3
Detergent Valve
VS1
Cold Valve
Open
Hot Valve
VS2
Oxi Valve (not
on all models)
Softener Valve
Fresh Fill Valve
Pre Wash (not
Detergent Valve
on all models)
Cold Valve
Open
Hot Valve
Neutral
Oxi Valve (not
Open
on all models)
Thermistor
Softener Valve
Rtn (VSS)
Pre Wash (not
on all models)
Open
Neutral
Open
Thermistor
Rtn (VSS)
J6-6 Open
J6-5 Grn Lid Sw
J6-4 Blu Home Sw
6. Is the "Diagnostic LED" flashing or
J6-3 Blk Lock Motor
J6-2 Brn continuously 'ON' or 'OFF'? (See Figure 2 Lock Motor
J6-1 Wht Sw Out
below for LED location.)
Flashing: (+5VDC present and micro
operating) proceed to Key Activation &
6. Is the "Diagnostic LED" flashing or
Encoder Test, page 3.
continuously 'ON' or 'OFF'? (See Figure 2
ON: (+5VDC present but micro failure)
below for LED location.)
continue to step 9.
Flashing: (+5VDC present and micro
OFF: (+5VDC missing or micro failure)
operating) proceed to Key Activation &
proceed to step 7.
Encoder Test, page 3.
7. Check if console UI is affecting the main
ON: (+5VDC present but micro failure)
control DC supply.
continue to step 9.
a. Unplug washer or disconnect power, and
OFF: (+5VDC missing or micro failure)
wait for the diagnostic LED to turn off.
proceed to step 7.
b. Remove connector J18 from main control.
7. Check if console UI is affecting the main
control DC supply.
c. Plug in washer or reconnect power.
a. Unplug washer or disconnect power, and
d. Recheck the Diagnostic LED per step 6.
wait for the diagnostic LED to turn off.
If the diagnostic LED is now flashing, go
b. Remove connector J18 from main control.
to Test #4: Keys and Encoders, "None of the
indicators light up", step 4, page 17. If diagnostic
c. Plug in washer or reconnect power.
J1 Motor
LED is not flashing, continue to step 8.
d. Recheck the Diagnostic LED per step 6.
J12 Power Cord
8. Perform voltage checks inside header J18
If the diagnostic LED is now flashing, go
on the board – do not short pins together.
to Test #4: Keys and Encoders, "None of the
indicators light up", step 4, page 17. If diagnostic
J4 Pumps & Shifter
LED is not flashing, continue to step 8.
J4-7 Orn Shifter
8. Perform voltage checks inside header J18
J4-5 Lt Blu Recirc. Pump (not
on the board – do not short pins together.
on all models)
J4-3 Blu Drain Pump
J4 Pumps & Shifter
J4-7 Orn Shifter
J4-1 Wht Neutral
J4-5 Lt Blu Recirc. Pump (not
J5 Heater Element
on all models)
J5-2 Gry Neutral
J5-1 Blk L1
J4-3 Blu Drain Pump
J6 Lid Lock
J4-1 Wht Neutral
J6-7 Red Lock Sw
J6-6 Open
J5 Heater Element
J6-5 Grn Lid Sw
J5-2 Gry Neutral
J6-4 Blu Home Sw
J5-1 Blk L1
J6-3 Blk Lock Motor
J6-2 Brn Lock Motor
J6 Lid Lock
J6-1 Wht Sw Out
J6-7 Red Lock Sw
J6-6 Open
J6-5 Grn Lid Sw
J6-4 Blu Home Sw
J6-3 Blk Lock Motor
J6-2 Brn Lock Motor
J6-1 Wht Sw Out
Whirlpool & Maytag Direct Drive Top Load Washer
J18 User Interface
J18-3 Yel
J18-2 Blu
COMPONENT TESTING
J18-1 Blk
J19 Basket Light
J19-2 Blk
J19-1 Red
J5 Heater Element
DO NOT REMOVE OR DESTROY
J7 Relay Expnsion Brd.
J7-8 Yel
J7-7
J7-6 Orn
J7-5 Brn
J7-4 Vlt
J7 Relay Expnsion Brd.
J7-3 Tan
J7-8 Yel
J7-2 Lt Blu Data In
J7-7
J7-1
J7-6 Orn
J7-5 Brn
J12 Power Cord
J7-4 Vlt
J12-3 Wht
J7-3 Tan
J12-2 Grn
J7-2 Lt Blu Data In
J12-1 Blk
J7-1
J18 User Interface
J18-3 Yel
J12 Power Cord
J18-2 Blu
J12-3 Wht
J18-1 Blk
J12-2 Grn
J12-1 Blk
J19 Basket Light
J19-2 Blk
J18 User Interface
J19-1 Red
J18-3 Yel
J18-2 Blu
J18-1 Blk
J19 Basket Light
J19-2 Blk
J19-1 Red
Rtn (VSS)
Wide
5V
– LED
+LED
J4 Pumps
& Shifter
J2 Valves &
Thermistor
15VDC
Buzzer (not
on all models)
Clock
Data Out
Strobe
Rtn (VSS)
15VDC
Buzzer (not
5VDC (not
on all models)
on all models)
Clock
Data Out
Strobe
Neutral
Rtn (VSS)
Ground
L1
5VDC (not
on all models)
Rtn (VSS)
Wide
Neutral
5V
Ground
L1
– LED
+LED
Rtn (VSS)
Wide
5V
– LED
+LED
J4 Pumps
& Shifter
J4 Pumps
& Shifter
3-5
n