LG LRE3085ST Service Manual page 67

CHECKING FLOW CHART BY FAILURE
Symptom
1. Door Lock System
Failure
2. F10
1. Check the Electric wiring
2. Check the Motor's Resistance
3. Check the Relay PCB (Door Lock Relay)
9-13
Check Point
CN13
6 5 4
CN 13 (④ ~ ⑤)
2 1
Resistance[Ω]
∞