Blower Motor Malfunction

BLOWER MOTOR MALFUNCTION

TEST DESCRIPTION

Steps 1 - 10:

The numbers below refer to the step numbers on the diagnostic table.
3. Test the Low, Med 1, Med 2 and High blower motor control circuits for an open, short to voltage, short to ground or high resistance. The High speed blower motor control circuit is spliced to the Blower motor resistor circuit. This circuit should be checked also.
7. Check the connection by removing and securely reinstalling before replacement of the HVAC control is considered.