Operation CHARM: Car repair manuals for everyone.

Blower Motor Circuit

Blower Motor Circuit

DESCRIPTION




The blower motor is operated by signals from the air conditioning amplifier. Blower motor speed signals are transmitted by changes in the duty ratio.

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

The blower motor controller controls the blower motor speed.

Wiring Diagram:






Step 1:




Step 1(Continued)-3:




Step 4-5:




Step 5(Continued)-6:




INSPECTION PROCEDURE