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c) Activating Components, Current Draw
Testing and Calculated Resistance in
Power Probe Hook Mode:
Activating Electrical Components
in Power Probe Hook Mode
is one of the main features that make the Hook very useful. The
Power Switch (+) and (–) behave differently according to the
Switch Preferences. Notice the Power Switch Settings on the
preference line (see section III-a), for Power Switch Behaviors
(see section III-d).
On 12 volt systems the incidence of arcing is low for ease of
operation. Arc Detect has been disabled in all modes. Arc de-
tect is functional in Power Probe mode only when the source
voltage exceeds 16V. Arc detect can interfere with the function
of some devices. When using the HOOK on vehicles with 24V
and above source voltage. It may be necessary to use Power
Plus mode when the devices you are powering are electrically
very noisy as on some motors or horns. Use caution and follow
instructions on how to properly power up a circuit. Because of
the danger present with higher voltages to the vehicle and you,
it is recommended to use Power Plus mode for powering up in
these higher voltage systems when possible.
Current Draw Testing and Calculated Resistance
are dy-
namic tests that are performed by activating circuits or electrical
components with the vehicle’s battery power through the Hook
and measuring the Amps and Ohms. Since the measurements
are made while under power you are getting a true indication as
to its real operating integrity.
To test the current draw and calculated resistance of an
electrical component in Power Probe Hook Mode:
1. Contact the probe tip to the positive terminal of an electric
component that is properly grounded.
2. Press and hold (+). The Hook supplies power to activate it.
During activation the Hook displays the AMMETER and OHM
METER simultaneously.
3. Read the Current Draw displayed as AMP on the screen.
4. Read the Calculated Resistance displayed as OHM on the
screen.
5. If the display shows CIR BREAKR TRIP when you attempt
to activate the electrical component, you will need to
increase the trip point by adjusting it in the Circuit Breaker
preferences. (See section: III-c)
NOTE: The same measurments also can be taken on a battery
(+) referenced circuits by pressing the (-) button.
Starter
Motor
Solenoid
clicks when
Activated
Press & Hold
the (+) Power
button
M
A P
0
2
0
5
5
1
H
O M 2
Load Activated
Ground
Battery Volts
Battery Volts
Press
Power
Switch
Ground
IV
Continued