fresh food side not cooling

Hello
See technical service link below and go to page #318 for more diagnostics. Here are a few things to verify .Matt Ace technician
1) Access Forced Operation Mode and turn on the defrost heater. You should hear the relay(s) click when activated. Verify the 12v supply to the relays and the defrost heater(s).
2. Verify the continuity of the bimetal and/or thermal fuse in the defrost circuit.
3. Check the wiring harness for poor connections.
4. Check the operation of the defrost circuit, especially the defrost sensors and bimetal elements. Verify the defrost heater is not turning off to early .
5. Check the freezer defrost sensor feedback line by measuring the voltage level at the Main PC Board and comparing it to the sensor table.