Fuel Shut-Off Mode

WARNING: This page is about a different car, the 2005 Suzuki Swift +, 2005 Pontiac Wave, and 2005 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.

The engine control module (ECM) has the ability to completely turn OFF all of the injectors when certain conditions are met. These fuel shut-off modes allow the ECM to protect the engine from damage and also to improve the vehicles driveability.

The ECM will disable all of the injectors under the following conditions:

Ignition OFF-Prevents engine run-on
Ignition ON but no crank position (CKP) signal-Prevents flooding or backfiring
A high engine speed-Above the red line
A high vehicle speed-Above the rated tire speed
Closed throttle cast down-Reduces the emissions and increases engine braking.