5 - 4
MOTOR CONTROL UNIT
Power Supply
L
N
GND
Motor Connector
1
2
3
4
5
}
}
Motor
Windings
Tachometer
Serial Comm Link
Vcc
IN/OUT
GND
Connector Location
Door Switch
Test Points Reading
Door Closed 2 to 1 0 ohms
Door Open 2 to 1 Infinity
Heating Element Relay Solenoid
Test Points Reading
2 to 1 15 ohms
1 to 2 = 6 ohms
1 to 3 = 6 ohms
2 to 3 = 6 ohms