850 T-5R L5-2.3L Turbo VIN 58 B5234T5 (1995)
A/C Signal: Description and Operation
A/C Pressure Sensor
PURPOSE
The A/C pressure sensor supplies the ECM with a linear signal regarding pressure in the A/C high-pressure circuit. The ECM uses this signal to
control:
^ Starting of the engine cooling fan (high and low speed).
^ Switch-out of the A/C compressor if system pressure becomes excessive.
LOCATION
Installed in the A/C high-pressure circuit.
OPERATION
The sensor receives a 5 VDC signal from the ECM. The sensor returns an equal or lower voltage signal to the ECM (indicating system pressure).
Low pressure returns a low voltage signal, high pressure returns a high voltage signal.
