Sealey PP100 - Manual (Page 3)

Original Language Version PP100 issue: 2 - 06/03/12
4.2 continuity testing
4.2.1 While the probe is in resistance mode, continuity
can be tested on wires and components attached
to or disconnected from the vehicle’s electrical
system by utilizing the probe tip when connected
with a chassis earth or the auxiliary earth lead
(fig.9).
4.2.2 Where continuity is present the LcD screen will
display ‘0.0Ω’ and the green LED will illuminate.
if the audible indicator is turned on a low pitched
tone will emit.
4.2.3 in any other instance the LcD screen will display
the resistance value (fig.10). For any resistance
value greater than 2MΩ the LCD screen will
display ‘oL’.
4.2.4 Another method to check for continuity of
connections to earth or the battery is to use the
power switch. if the circuit breaker trips, there
is a good, low-resistance connection.
3.4.3 resistance - With the tool in this mode,
contacting the probe tip to a component, the LcD
display will show the resistance between the
probe tip and the auxiliary ground lead (fig.6).
3.4.4 Audible indicator on/off - With the tool in this
mode, press and hold the mode button to change
the function of the audible indicator (fig.7).
fig.6
fig.7
4. testinG proceDures
4.1 voltage and polarity test
4.1.1 With the tool set in voltage mode, when the probe
tip contacts a PositiVE circuit, the red LED will
light and the LcD screen will display the voltage
to the nearest 0.1V. if the audible indicator is
activated, a high pitched tone will emit (fig.8a).
4.1.2 When the probe tip contacts a nEGAtiVE circuit,
the green LED will light and the LcD screen will
display the voltage to the nearest 0.1V. if the
audible indicator is activated, a low pitched tone
will emit (fig.8b).
4.1.3 if the probe tip contacts an oPEn circuit, neither
LED will function.
fig.8a fig.8b
fig.9
fig.10