Front Temperature Controls

The Temperature Valve Actuator Motor operates in response to a voltage signal form the Heater and A/C Controller's Temperature Control knob. The Temperature Valve Actuator Motor has operating voltage applied when the Ignition Switch is in RUN from HTR-A/C Fuse 12 through the BRN (141) wire. The motor is grounded through the BLK (150) wire to Ground 0201. The motor positions the Air Temperature Valve in a position consistent with the voltage signal from the Heater and A/C Controller. This signal is delivered to the actuator motor on the LT BLU (733) wire.

The Heater and A/C Controller is also powered from HTR-A/C Fuse 12 through the BRN (141) wire. It also is grounded through the BLK (150) wire to Ground G201. in the controller, current flows to ground through a rheostat. The wiper arm of the rheostat is moved by the Temperature Control knob to select a portion of the voltage dropped across the resistance. This voltage is delivered to the actuator motor to position the valve.