For 1990-2009 cars

Table 1: | Fuel Pump Flow Control Module Scan Tool Data Parameters
Table 2: | Fuel Pump Flow Control Module Scan Tool Output Controls

#### Fuel Pump Flow Control Module Scan Tool Data Parameters

Parameter | System State | Expected Value | Description
--- | --- | --- | ---
Operating Conditions: Ignition ON/Engine Idling at Normal Operating Temperature / Vehicle is in Park or Neutral
Desired Fuel Rail Pressure | -- | 306.8 kPa (44.5 psi) | This displays kPa (psi). This is the desired fuel rail pressure.
Fuel Pump Command | -- | On | The scan tool displays On or Off. This is the current state of the fuel pump command.
Fuel Pump Signal Command | -- | Varies | This displays %. This is the commanded fuel pump signal measured in percentage.
Fuel Rail Pressure Sensor | -- | 296.4-310.3 kPa (43-45 psi) | This displays kPa (psi). This is the current pressure at the fuel rail pressure sensor.
Fuel Rail Pressure Sensor | -- | 4.90-5.01 Volts | This displays Volts. This is the fuel rail pressure sensor voltage.
Ignition 1 Signal | -- | Varies | This displays Volts. This is the current ignition 1 signal.
LT Fuel Pump Trim | -- | Varies | This displays a numeric value. This is the long term (LT) fuel pump trim.
ST Fuel Pump Trim | -- | Varies | This displays a numeric value. This is the short term (ST) fuel pump trim.

#### Fuel Pump Flow Control Module Scan Tool Output Controls

Output Control | Description
--- | ---
Fuel Pressure Control | This output control is used to control the fuel pressure.
Fuel Pump | This output control is used to command the fuel pump ON and OFF.
Fuel Pump Trim Reset | This output control is used to reset the fuel pump trim.