User's Manual

iSmartEV P03 User Manual
www.newsmartsafe.com
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3. Insert one end of the black multimeter test lead into the "COM"
end and one end of the red multimeter test lead into the "V/Ω"
end.
4. Connect the red and black test leads to the tested point.
5. Tap Start, and the reading will be directly displayed on the
screen.
8.3 Detection Examples
Detection of knock sensor
(1) Detection of knock sensor resistance
Turn the ignition switch to the "OFF" position, disconnect the lead
connector of the knock sensor, and detect the resistance between
the knock sensor connecting terminal and the housing via
resistance measurement, which should be ∞ (non-conductive). If
it is 0Ω (conductive), the knock sensor must be replaced. For
magnetostrictive knock sensor, the resistance measurement can
also be used to detect the coil resistance. The resistance value
shall meet the specified value (Refer to the maintenance manual
of the corresponding model for specific data). Otherwise, the
knock sensor must be replaced.