Scan Tool Data Definitions (FPCM)

WARNING: This page is about a different car, the 2007 GMC Sierra, 2007 GMC Cab & Chassis Sierra, 2007 Chevrolet Silverado, and 2007 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The Scan Tool Data Definitions contains a brief description of all the fuel pump control module (FPCM) parameters available on the scan tool.

Desired Fuel Rail Pressure: The scan tool displays the desired fuel rail pressure measured in kPa or psi.
Fuel Pump Command: The scan tool displays On or Off. This is the state of the fuel pump, as monitored by the FPCM.
Fuel Pump Signal Command: The scan tool displays %. This is the state of the fuel pump signal, as monitored by the FPCM.
Fuel Rail Pressure Sensor: The scan tool displays current fuel rail pressure measured in kPa or psi. This is the current pressure of the fuel rail, as monitored by the FPCM.
Fuel Rail Pressure Sensor: The scan tool displays the current fuel rail pressure measured in Volts. This is the current pressure of the fuel rail, as monitored by the FPCM.
Ignition 1 Signal: The scan tool displays the ignition 1 signal in volts, as monitored by the FPCM.
LT Fuel Pump Trim: The scan tool displays the long term fuel pump trim.
ST Fuel Pump Trim: The scan tool displays the short term fuel pump trim.