Troubleshooting control fuel injection

The shape of the output signal from the main sensor

Shows the shape of the output signal from the main sensor of the fuel system. These include: CMP (camshaft position sensor), MRS (crankshaft position sensor), mass air flow sensor, throttle position sensor, rear oxygen sensor, front oxygen sensor test pulse during rapid acceleration of the engine up to 4800 ^min-1 without Load enough warm engine. Picture output signal is a reference, the true values of the signals tend to have different values.

Air flow sensor (MAF), and throttle position (TPS)

When you press the accelerator pedal, the output of the air flow sensor (MAF) should be increased, and vice versa, must be reduced when the accelerator pedal is fully released.

Signal throttle position sensor (TPS) should be increased by pressing the accelerator pedal and shrink when it is released.

Front (FR) and rear (RR) oxygen sensors

The signals of both oxygen sensors can be increased immediately after pressing the accelerator pedal and can decrease when the pedal is released.

Pulse injection

Momentum increases when pressing the accelerator pedal, and decreases when it is released.