User's Manual

iSmartEV P03 User Manual
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cooling water temperature. When the cooling water temperature
sensor harness is disconnected and the ignition switch is turned
on, the voltage should be about 5V.
8.4 Precautions
1. The head of the multimeter test lead is metal. Do not touch it
with hands during measurement, otherwise it will not only affect
the measurement results, but also cause electric shock.
2. Before the measurement, calibrate the measuring range and
the jack inserted by the test lead, and then carry out the
measurement after there is no error.
3. If the measured value cannot be estimated before
measurement, the highest range shall be used for measurement
first, and then the appropriate range shall be selected according
to the measurement results.
4. It is strictly prohibited to switch the range when measuring high
voltage or large current to prevent arcing and burning the switch
contacts. To shift gears, the metal contacts must be disconnected
first.
5. It is strictly prohibited to measure the resistance when the
circuit under test is live to avoid damaging the instrument.
6. When measuring DC power, select appropriate gear. For
different components, the current is different. You can refer to the
marked parameters of components to switch gears. During
measurement, it is connected to the circuit in series, and then
measured one by one. The voltage of the branch can be
disconnected first. In particular, it is forbidden to connect the
multimeter in parallel in the circuit, which will not only damage the
multimeter but also cause casualties.