I'm not sure how your model corresponds to ours, and I know you're asking about the refrigerator instead of the ice-maker, but I wanted to post a follow up for others working on the
ice-maker. Perhaps the rest of the refrigerator has the same type of tests?
I picked up an Electrolux service kit (5303918495) and got the icemaker working pretty easy; I did find one of the wires was
OCCASIONALLY getting caught in the travel path of ice mold and this would cause the icemaker to shutdown until I unplugged the refrigerator. Since it was only occasional, it was hard to spot until I was able to cycle it multiple times while in service mode. Test instructions that were included with the service kit would have been invaluable when I was in your position. Wish this stuff was included for the homeowners on benefit in the manual.
51, 52, and 63 being the main tests.
SERVICE MODE
Hold both the Freezer and Refrigerator (+) buttons for up to 10 seconds to get into Icemaker service mode. You will know you're in service mode when "48C" or "49C" is displayed.
From this point you can press the +/- buttons to cycle through the different tests. Press the on/off button to execute the tests.
Test 51C: Test mold thermistor(TH1). Value of "1" indicates thermistor is in range.
Test 52C: Suction Line Thermistor (TH3). Value of "1" indicates thermistor is in range.
Test 54C: Ice mold Heater test. Pres On/Off to toggle heater to ON state.(heater automatically turns off after 60Seconds) Heater should begin warming and display temperature increasing on display.
Test 55C: Water Fill Test. place small cup under water tube and press On/Off to do normal fill routine. (Once test executes on/off will no longer be lit. Scroll to another test and return to 55C to do a retest)
Test 57C: Evaporator Fan Test. When On, can airflo be felt at 3 holes on left Icemaker wall?
Test 58C: Bail arm switch test. Move ice mold to 6 0'clock position. raise and lower the bail arm to activate the lower left switch. The display should show "on" when depressed and have a tone. When not depressed, "off" is displayed and no tone is heard.
Test 59C: Fill Limit Switch test. Move ice mold to 6 0'clock position. press the right switch in the ice maker. The display should show "on" when depressed and have a tone. When not depressed, "off" is displayed and no tone is heard.
Test 60C: Freeze Limit Switch test. Move ice mold to 6 0'clock position. press the left switch in the ice maker. The display should show "on" when depressed and have a tone. When not depressed, "off" is displayed and no tone is heard.
Test 61C: Defrost Heater Test. Remove access panel and plastic cover for heater. Press On/Off on display to toggle heater to ON state. Verify the heater is warming.
Test 62C: EEV Test. Press On/Off to start test and wait for the result. Frige display will be flashing the test 69 and freezer display will be displaying the TH3 Temperature. P = [Pass] and F = [Fail]
Test 63C: Tests the ice maker travel and verify it hits both switches. Freezer display should show "1"
---------- If this information was helpful to someone, please reply so I know I didn't just type all that for nothing... LOL!

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Good Luck!