High Pressure Sensor -G65-

High Pressure Sensor -G65-

Where applicable, high pressure sensor -G65- -B- is used instead of A/C pressure switch -F129- -G65- transmits a square wave signal to the Climatronic control module -J255- at a rate which varies according to the refrigerant system pressure. - J255- processes the signal/pulse rate from -G65- as follows:
- Confirms refrigerant system pressure is sufficient for A/C compressor regulator valve -N280- to be energized, and that compressor output regulation via -N280- can begin.
- Where excessive or insufficient refrigerant system pressure is present (E.g.: insufficient air flow over condenser or when overcharged), A/C compressor regulator valve -N280- will idle compressor internally.
- When the refrigerant system pressure rises, the radiator fan(s) are switched to the second speed.

Where applicable, the signal generated by -G65- may also be input to the Motronic Engine Control Module (ECM). As the amount of torque needed to drive the A/C compressor varies according to the refrigerant system pressure, the ECM processes this signal in order to enhance engine performance.

NOTE: Always confirm system use of-G65- described above by referring to model specific Training (SSP) information, and confirm applicable wiring circuit using applicable "Engine" and "Climatronic" wiring diagrams.