LG LFC20770SB Service Manual page 53

No Checking flow
1-. Unscrew Ice Maker Kit.
5
2-. Check for loose connection in Ice
Maker Kit.
1-. Check continuity in marked wires:
4
(1) (3) (5)
(2) (4)
(2) (4)
(1) (3) (5)
Result & SVC Action
Result
Firmly plugged
Plug firmly, then check again. Problem
Loose
Result
Continuity in all wires
Not continuity in any wire
Check continuity as follow:
? ?
(1) : Black Black.
? ?
(2) : Blue Blue.
(3) : Yellow ? ?
Yellow.
(4) : White ? ?
White.
? ?
(5) : Red Red.
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SVC Action
Go to step 6
persist?
YES: go to step 2
NO: explain to customer.
SVC Action
Replace Ice Maker Kit
Replace Refrigerator Unit.