S15/T15 4WD P/U V6-262 4.3L VIN W CPI (1992)
A/C Signal: Description and Operation
A/C "ON" Signal
NOTE: Because different models and engine applications vary in wire colors, circuit numbers, and pin numbers, the above image is a typical example.
Refer to COMPUTERS AND CONTROL SYSTEMS/SCHEMATIC AND ROUTING DIAGRAMS for specific schematic applications.
PURPOSE:
This signal indicates that the A/C control switch is turned "ON" and the pressure switch is closed. The control module uses this signal to adjust the idle
speed for improved idle and engine performance.