Scan Tool Data Definitions - PCM

PCM - Engine Data 1 - ECT: The scan tool displays -40 to 215°C (-40 to 420°F). The output of the engine coolant temperature sensor.

PCM - Engine Data 2 - ECT: The scan tool displays -40 to 215°C (-40 to 420°F). The output of the engine coolant temperature sensor.

PCM - Engine Data 2 - Commanded A/C: The scan tool displays On or Off. On is displayed when the PCM has energized the A/C clutch relay.

PCM - Engine Data 2 - A/C High Side Pressure: The scan tool displays 0 to 5 Volts. The output of the A/C pressure sensor.

PCM - Engine Data 2 - A/C Press. Out Of Range: The scan tool displays Yes or No. Yes is displayed when the system pressure exceeds 2968 kPa (430 psi).

PCM - Output Driver Data - A/C Relay: The scan tool displays OK or Fault. Fault is displayed when an open or short is detected in the A/C CLU relay ground circuit.

PCM - Engine Output Controls - A/C Relay: The scan tool displays Off or On selections. This command allows you to turn the A/C relay OFF and ON.