Frequently
asked questions

During the HP pump test, the SSTAG 500 GO takes control of the pump, that is, physically disconnects it from the gasoline controller. It reads the control pulses from the ECU at that time and controls it itself based on them. You could say that it copies the original control signal.

So if the pressure drops or rises significantly during this test, it could mean that:

The HP pump is incorrectly connected,
or the “High pressure pump normally closed” setting is set incorrectly.
[this setting is set automatically already at the beginning of autocalibration],
or if you read the pump pulses correctly before the switchover, and after the switchover they disappeared, it is likely that you need to adjust the “Signal Gain” and/or “LO Detection Threshold” settings from the “Gasoline High Pressure Pump” group,
or the built-in hardware emulation is insufficient in a given car and the gasoline controller simply disables the control of the HP pump. In this case, the Stag-HPPE module should be used.

The operation of this test is graphically shown in the “Basic setup procedure” manual.

During the high-pressure sensor test, the Stag 500 GO disconnects the sensor from the gasoline controller and “copies” its voltage and puts it out at the emulation output connected to the ECU.Utwórz stronę

Thus, during the test, we expect no visible changes in both the voltage read and the pressure read from the OBD.

On the other hand, if during the test the voltage read from the sensor suddenly rises to 5V, the likely cause will be the reverse connection of the emulation (the yellow wire should be connected to the sensor and the green wire to the ECU).

The operation of this test is graphically shown in the “Basic setup procedure” manual.