Blower Motor Circuit

BLOWER MOTOR CIRCUIT

CIRCUIT DESCRIPTION




The blower motor is operated by signals from the A/C amplifier. Blower motor speed signals are determined by changes in the duty ratio*.
The blower motor control controls the blower motor speed. The blower motor control reads the signal from the A/C amplifier and controls rotation and speed.

HINT: *: The duty ratio is the ratio of the blower motor ON time (A) to the total of the blower motor ON and OFF time (A+B).

Wiring Diagram:

Step 1-2:

Step 3-4:

Step 5-6:

Step 7-9:

Step 10:

Step 11:

INSPECTION PROCEDURE