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For 1990-2009 cars only
Makes 🢒 Saturn 🢒 2003 🢒 ION 🢒 Engine 🢒 Engine Controls - 2.2L (L61) 🢒 Scan Tool Output Controls

Engine Control Module Scan Tool Output Control

Scan Tool Output Control

Additional Menu Selection(s)

Description

Crankshaft Position Variation Learn

Psgr. Cars

Enables the engine control module (ECM) to learn the variations in the crankshaft position (CKP) system. The ECM will learn the variations once the following conditions are met:

    • Engine coolant temperature (ECT) is more than a specified value.
    • All instructions on the scan tool have been completed.
    • The accelerator pedal smoothly applied until the fuel cut-off, as specified on the scan tool, is achieved and then immediately released.

The ECM learns the variation values on the deceleration from fuel cut-off.

Cylinder Power Balance

Fuel System

Enables/Disables a cylinder by turning OFF the fuel injector to the cylinder. The fuel injector is normally enabled. The ECM disables the fuel injector when the following conditions are met:

    • All instructions on the scan tool are complete.
    • Stabilized engine speed
    • Fuel Injector selected

When the DISABLE is selected, the ECM turns the injector OFF for 15 seconds. During this period, the engine operates with a misfire.

EVAP Purge/Seal

Engine Output Controls/EVAP System

Activates both the purge solenoid and the vent solenoid to seal the system. The normal commanded state of both valves is NONE. Device control will be aborted and inhibited if FTP sensor exceeds 38 mm Hg (20 in H2O).

EVAP Purge Solenoid (PWM)

Engine Output Controls/EVAP System

Activates the purge solenoid in 10 percent increments from 0-100 percent. The normal commanded state is NONE. Device control will be aborted and inhibited if FTP sensor exceeds 38 mm Hg (20 in H2O).

EVAP Vent Solenoid

Engine Output Controls/EVAP System

Activates the vent solenoid. The normal commanded state is NONE. Device control will be aborted and inhibited if FTP sensor exceeds 38 mm Hg (20 in H2O).

Front 02 Sensor Heater

Engine Output Controls

Activates the front 02 sensor heater ON or OFF. The commanded states include NONE, ON, and OFF. The normal commanded state is NONE. On a cold engine with the key ON, engine OFF, the HO2S signals will continue to drop below bias when commanded ON. The heater will remain ON until cancelled by the scan tool.

Fuel Injector Balance

Fuel System

Enables fuel injector in order to verify proper fuel injector flow. The ECM will pulse the selected injector when the following conditions are met:

    • All instructions on the scan tool are complete.
    • Stabilized engine speed
    • Key ON, Engine OFF

The selected fuel injector can only be flowed/pulsed once per ignition cycle.

Fuel Pump

Engine Output Controls

Activates the fuel pump ON or OFF. The fuel pump will remain ON until cancelled by the scan tool and/or will be aborted and/or inhibited if vehicle speed is present.

Fuel Trim Reset

Fuel System

Activates the reset of fuel trim data in all fuel trim cells

Malfunction Indicator Lamp

Engine Output Controls

Activates the malfunction indicator lamp. The MIL will remain illuminated until cancelled by the scan tool.

Rear 02 Sensor Heater

Engine Output Controls

Activates the rear 02 sensor heater ON or OFF. The commanded states include NONE, ON, and OFF. The normal commanded state is NONE. On a cold engine, with the key ON, engine OFF, the HO2S signals will continue to drop below bias when commanded ON. The heater will remain ON until cancelled by the scan tool.