Graco 16W873, ti23055a, 16W884, 16W881, 16W867, 16W887, 16W984 Control Board Malfunction Steps, Volts

Troubleshooting

Control Board Malfunction (Steps)

	STEP 1.
BEEP	Turn engine
	OFF and set
	meter to
	continuity.

-

	ti14938a
+	Pump
	On/Off
-	Switch

To Ground

To Engine

STEP 2.

12 -20 AC Turn engine ON. Set meter

Vto AC volts and connect wires

- to control

ti14939aboard.

	Control
-	Board		+
	J2	J1

Engine

Generator

To Clutch

Field

+

Clutch Test Points

J10

LED

D12

J2 J1

STEP 3.

10-12 DC Leave engine running and turn

Vswitch ON. Turn potentiometer to

		-	high and set
	ti14940a		meter to DC
			volts.
Clutch		-	+
Field
			Control
			Board
Pinion	Drive
Assembly	Housing

	Control	ti14943a
	Board
J3 J4		J5
		J9

On/Off Switch

WatchDog Transducer

Premium Display Board

Potentiometer

ti14942a

-

Clutch

Field

STEP 4.

1-3 ohms	Turn engine
	OFF and
-	unplug
	clutch wires.
	Set meter to
	Ohms.
+
	Control
	Board

STEP 5.
Turn engine	Control
ON and turn	Board J5
switch ON.

ti14941a

Clutch Test Points

26 332919C