Operation CHARM: Car repair manuals for everyone.

Heater Option Only

On non-A/C equipped vehicles, the air distribution is selected by turning the mode switch. Moving the mode switch mechanically moves the mode door. A mode cable connects the mode switch to the mode door. The mode door position determines the air flow to the desired air outlet. With the manually operated heating and ventilation module, the operator can select either the defrost, vent or heat modes.