The Connection of x431 gds
If you have cars, you must know the car Professional Diagnostic Tools very much. If not there are some introduction about x431 gds.
1. Firstly power on the main unit (connect the main unit module and the DC 12V power supply via the power adapter, or powered via cigarette Lighter cable and the two clamps battery cable);
2. Connect the sensor test cable (black) to the "COM" interface on the sensor module by one end, then connect the test probe or electric control convertor cable by the other end;
3. Connect the sensor test cable (red) to the "V Ω Hz" interface on the sensor module by one end, then connect the test probe or electric control convertor cable by the other end;
Notice: choose related cables and test probes according to different terminal.
With simulation function users can exactly judge if the sensor is good or not, which can decrease replacing components blindly. For example, the trouble code indicates the fault is in water temperature sensor itself. But we need also make sure the fault is in water temperature sensor or in the connection between ECU and sensors or in ECU itself. So at this time, the signal of simulating water temperature sensor, instead of water temperature sensor, input signal to the microcomputer by simulation function. If the engine work better and the fault symptom disappears, so the fault is in the water temperature sensor. If the fault symptom still ccurs, import the signal by ECU port. Now, if the fault symptom disappears, the fault is in the connection between water temperature sensor and ECU; if the fault symptom still occurs, the fault is in ECU.
After connected each harness of sensor (refer to Chapter 3.1 for the detailed info), power on then enter into the function menu interface, click "Sensor simulation" to display the main testing menu as shown on Figure 3-1.
It is very convenient for users to simulate special waveform or fault wave with hand-draw waveform unction. Users only can draw the shape of wave form which needs to be simulated in left drawing zone, and setting some parameters such as waveform high level, waveform lower level, and period of waveform, then click [Start], X431 GDS can output a waveform which users want to
It is ok to draw a periodic integrated waveform (when it is outputted, the system will consider the waveform in the draw section as a periodic one). Users should be drawing a wave in drawing zone so that sampling more point for reduce tolerance. Users don’t need to consider the crest &bottom level and period in the draw section. Only need to set the crest & bottom level and period in the right parameter setting section.