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Blower Switch

Unplug connector on blower switch. Using a DVOM, check for continuity between common terminal (Blue/Yellow wire) and other specified terminals. See BLOWER SWITCH TESTING  table. Replace blower switch if readings are not as specified.

BLOWER SWITCH TESTING

Switch (1) Blue (1) Blue/Black (1) Blue/White Position
LO NC NC NC
2nd C NC NC
3rd C C C
HI NC C C
(1) Continuity (C), No Continuity (NC).