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Fuel shut-off

Fuel shut-off


If any of the following criteria are fulfilled, fuel shut-off will take place:


• no power supply (+15 circuit)

• full throttle during starter motor cranking

• Engine speed over 6200 rpm.

• air mass/combustion exceeds 1300 mg/c

• immobilizer code faulty

• throttle turned by hand when engine running

• serious fault in throttle valve control

• a pedal position sensor fault if engine speed exceeds 2200 rpm

• ignition discharge module not supplied with current

• engine speed above 1800 rpm and throttle pedal fully released. For manual gearboxes this applies to 3rd, 4th and 5th gears. For cars with automatic transmission it applies to 2nd, 3rd ad 4th speeds. Injection is activated again at 1400 rpm.


Diagnostics

If TWICE does not send out ”Immobilizer OFF” after the ignition has been switched on or if the Trionic T7, TWICE or MIU control modules are replaced and the immobilization code is not programmed in TWICE, diagnostic trouble code P1460 will be generated and the engine cannot be started.