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If a component part that is controlled by the EOC fails to operate the cause could be due to a defect in
the EOC, Oven Relay Board, wiring connections , or the non functioning component. Component parts
like elements, fan motors, lock motors, etc. can be tested with a simple continuity check using an ohm
meter. Verify the continuity of the component and the wiring circuit between the component to the relay
board first. Also verify continuity of the wiring harness and connectors between the EOC and Oven
Relay Board.
If the component and wiring connections are good, test the output signal voltage from the EOC to the
Relay board for the particular relay that turns on that component part. When testing the output signal
set your volt meter to read DC voltage. The output signal will be approximately 3.3 volts DCV.
GND (-) CIRCUIT ACCESS POINTS
Photo A
Using the
EOC SIGNAL VOLTAGE TEST MATRIx
it is possible to determine if the EOC is properly
signaling the relay board to turn on a particular component. If the proper signal is detected but the
relay does not close then the relay board is defective and must be replaced. If the proper signal is not
detected then the EOC is defective and must be replaced.
Photo B
BAKE RELAY SIGNAL VOLTAGE TEST
Oven Relay Board
ELECTRONIC OVEN CONTROL (ES630)
EOC Signal Voltage Test Matrix (ES630) - Dual Fuel Ranges
FREESTANDING ELECTRIC MODELS, and DUAL FUEL MODELS
FUNCTION
EOC
Test Points
Connector/Pin#
Relay Board
Test
Points
Connector/Pin #
Lower oven or Warmer Drawer
P9/Pin 7 → to GND J5/Pin 7 → to GND
L2 Out Relay
P11/Pin 4 → to GND J7/Pin 4 → to GND
Broil Relay
P11/Pin 1 → to
GND
J7/Pin 1 → to GND
Bake Relay
P11/ Pin 2 → to GND J7/Pin 2 → to GND
Convection Element Relay
P11/Pin 5 → to GND J7/Pin 5 → to GND
Lock Motor Relay
P11/Pin 6 → to GND J7/Pin 6 → to GND
Test for 3.3 VDC (+/- .5 volts) between
GND
on EOC circuit board and the
indicated connector pin when the specified function is activated.
RELAY BOARD CONNECTORS
J7
J5
When testing the signal voltage from the EOC the negative (-) lead of the test meter must connect the
GND circuit on the EOC circuit board. The easiest access point to the GND circuit is located just above
the left corner of the P11 connector. (Photo A).
Photo B demonstrates testing the Bake Relay signal voltage by measuring the voltage output between
connector J7 pin #2 (red wire) and the GND circuit on the EOC circuit board on a gas range.
