Which testing tool is used for quick testing for power and grounds?
Conventional test light.
Why can’t a conventional test light be used on electronic components?
Test lights increase amperage in a connected circuit, which can fry computers.
Which testing tool is safe to use on all electrical circuits?
Digital voltmeter (DVOM).
What are 2 reasons for measuring voltage in a circuit with a DVOM?
- To see if voltage exists in the circuit.
- To measure the actual voltage value an electrical component is receiving or generating.
What are 2 reasons for measuring resistance in a circuit with a DVOM?
- To see if components are working properly.
- To check for a broken wire.
When would you measured amperage in a circuit with a DVOM?
For testing component function.
What is the function of an “amp clamp”?
Plugs into multimeter to measure high amperage without frying internal fuses.
What are the 4 functions of a scan tool?
- Retrieve and erase data codes.
- Monitor data stream information.
- Perform function tests.
- Record and store data on test rides.
What is an advantage of a generic scan tool?
It can be used to interface with multiple brands.
What is an advantage of a manufacturer’s scan tool?
It allows full proprietary access to vehicle’s systems.
What is a data link connector (DLC)?
The terminal connection for diagnostic tools.
What are the 3 types of fault code?
Pending code, current code, and history code.
