diatools V200 PRO - 3.6 Testing Trailer Lights and Connections

12
Automotive Circuit Probe & Breaker Finder Kit
Figure 12
3.6 Testing Trailer Lights and Connections
While the circuit probe in DC Voltage mode, contact the probe tip to the positive terminal
of the component, the green LED should light up, indicating continuity to ground. While
obseing the green LED. Quickly press the power switch button forward and release, if the
green LED went out and the red LED comes on, you may proceed with fuher
activation. (Figure12) If the green LED went o at that instant or if the circuit breaker
tripped, the circuit probe has been overloaded. This could happen for the following
reasons:
(1) The contact you are probing is a direct ground
(2) The component you are testing is sho-circuited
(3) The component is a ve high current component (i.e., staer motor).
If the circuit breaker is tripped, reset it by waiting for it to cool down (15 sec.)
WARNING: Haphazardly applying voltage to ceain circuits can cause damage to a
vehicle's electronic components. Therefore, it is strongly advised to use the
vehicle manufacturer's diagram and diagnosing procedure while testing.
NOTE: When powering up components, you can increase the life of power switch if you rst
press the switch, then contact the tip to the component. The arcing will take place
at the tip instead of the contacts of the switch.