Session 4 diagnostic tools review

An oscilloscope display is called a ___________.

• grid

• graticule

• division

• box

Setting the time base to 50 ms per division will allow the technician to view a waveform how long in duration?

• 50 ms

• 200 ms

• 400 ms

• 500 ms

The VCMM is hardwired to output voltage on which channel?

• 1

• 2

• 3

• 4

What test does IDS automatically perform when identifying the vehicle?

• DTC test

• Network test

• Relative compression test

• Compatibility test

A throttle position sensor signal is going to be observed. At what setting should the volts per division be to get the best look at the waveform? (TPS sensors range from 0 to 5 volts)

• 3.0 V/division

• 1.0 V/division

• 2.0 V/division

• 5.0 V/division

If a snap throttle test reading is too high - what would you be looking for?

• Plugged intake components

• Plugged exhaust components

• Broken exhaust valve

• Broken intake valve

The VCMM has the ability to perform fuel pressure testing when used with the correct equipment.

• True

• False

A good engine should produce approximately how much compression during a running (dynamic) compression test at idle?

• 150 to 200 PSI

• 100 to 150 PSI

• 60 to 90 PSI

• 30 to 60 PSI

What is the maximum voltage the VCMM can output in signal generation mode?

• 10 volts

• 20 volts

• 30 volts

• 40 volts

A thermal camera could help you diagnose a circuit that has excessive ___________. 

• Resistance

• Voltage

• Insulation

• Length