Sensor Simulation; Connections; Simulation Test - Launch Sensorbox User Manual

LAUNCH

3.1 Connections

1. Firstly, power on the main unit (Connect one end of the power adaptor into
the power interface of X-431 PAD main unit, and the other end to the DC
12V power supply. Alternatively it can be also powered by cigarette lighter
cable and double clip power cord);
2. Plug one end of the sensor test cable (black) into the "COM" interface of the
sensorbox, then connect the other end to the test probe or electronic control
converting cable;
3. Connect one end of the sensor test cable (red) into the "VΩHz" interface of
the sensorbox, and then connect the other end to the test probe or
electronic control converting cable.
Note: Choose corresponding cables and test probes according to different
terminals.

3.2 Simulation test

Simulation test enables users to exactly judge if the sensor is good or not to
avoid replacing components blindly. For example, the trouble code indicates the
fault is in water temperature sensor itself. But we need to confirm whether the
fault results from water temperature sensor or the connections between ECU
and sensors, or ECU itself. In this case, we can make full use of simulation test
to input the signal of simulating water temperature sensor, instead of water
temperature sensor, to the microcomputer. If the engine works better and the
fault vanishes, the fault is in the water temperature sensor. If the fault still occurs,
input the signal to the corresponding terminals of ECU. Consequently, if the fault
disappears, the fault lies in the connection between water temperature sensor
and ECU, otherwise, the fault exists in ECU.
After all connections are properly made (refer to Chapter 3.1 for details), power
on and enter the function menu interface, then click "Sensor" to enter the test
selection screen. See Fig. 3-1.

3 Sensor Simulation

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X-431 PAD Sensorbox User's Manual