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Is the connection loose?
Reconnect
Yes
No
CON4
Yes
0 V
pin1 To
pin14
Close
12 V
pin1 To
pin14
Open
Door
Result
Test Point
Is the voltage between pin 1
and 14 of CON4 like as below?
pin1 BL/WH
Pin14
No
Aoltage of Door S/W Signal
Voltage of Door S/W Signal
CON4
No
Yes
Is the voltage between
pin2 and pin3 of
Refrigerator LED
Module Housing?
0 V
pin2 To pin3
Close
12 V
pin2 To pin3
Open
Door
Result
Test Point
Check the harness
open or short
Replace R LED Module
(Position No:409D)
Pin3 WH
Pin2 BK
Replace
MAIN PWB
(Position No:
500A)