Troubleshooting with a Test Lamp
Special Tools
EL-35616-200 Test Light – Probe Kit
For equivalent regional tools, refer to
Special Tools .
Caution: Refer to
Test Probe Caution .
A test lamp can simply and quickly test a low impedance circuit
for voltage. A Digital Multimeter (DMM) should be used instead of a
test lamp in order to test for voltage in high impedance circuits.
While a test lamp shows whether voltage is present if the impedance
is low enough, a DMM indicates how much voltage is present. In
other words, if there is not enough current, the test lamp will not
illuminate even though voltage is present.
The EL-35616-200 kitis Micro-Pack compatible and
comprised of a 12 V light bulb with an attached pair of
leads.
To properly operate this tool use the following procedures.
When testing for voltage:
| 1. |
Attach one lead to
ground. |
| 2. |
Touch the other lead to
various points along the circuit where voltage should be
present. |
| 3. |
When the bulb illuminates,
there is voltage at the point being tested. |
When testing for ground:
| 1. |
Attach one lead to battery
positive voltage. |
| 2. |
Touch the other lead to
various points along the circuit where ground should be
present. |
| 3. |
When the bulb illuminates,
there is ground at the point being tested. |
|
