diatools V200 PRO - 3.3 Signal Circuit Testing; 3.4 Activating Components in Your Hand

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Automotive Circuit Probe & Breaker Finder Kit
If the resistance value is greater than 100KΩ, the LCD will show “0L”.
There is also another way to prove continuity of connections to ground or batte.Power up
the connection using the power switch. If the circuit breaker trips, you have a good solid low
resistance connection.
Note: You can use the probe tip to pierce the plastic insulation on a wire. This means that
you can test the circuit without disconnecting anything.
Figure 10
If the LCD readings are abnormal, there is a problem with this sensor.
3.3 Signal Circuit Testing
Once you extract a DTC from the vehicle and realize that troubleshooting begins with some
kind of sensor circuit, there is a quick test you can peorm to verify the code. Testing your
sensor is easy while using the tool.
For example, you suspect there is a problem with your M.A.P. sensor circuit, then follow the
procedure below to test this sensor:
◆ Set the tool in AC Voltage mode, using the probe tip and the auxilia ground lead.
◆ Connect vacuum pump to MAP sensor.
◆ Contact the probe tip to the MAP sensor positive terminal and obsee the LCD readings
which should be a sine wave in normal condition.
◆ Apply vacuum.
◆ Release vacuum and obsee the LCD readings. (Figure 10)
3.4 Activating Components in Your Hand
While the circuit probe is in DC voltage mode, by using the probe tip in connection with
the auxilia ground lead, components can be activated right in your hand, thereby
testing their functions.
Connect the auxilia ground lead to the negative terminal or ground side of the compo-
nent being tested. Then contact the probe tip to the positive terminal of the component,
Max 12.4 Freq Hz
Min 0.2 43.0K