Automotive Diagnostics Quiz

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Tools, tests, and CAN basics

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Marco Vinicio Noroña Merchán

Ecuador

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Automotive Diagnostics Quiz


Automotive Diagnostics QuizVersion en ligne Tools, tests, and CAN basics par Marco Vinicio Noroña Merchán 1 What is the primary use of a scanner in cars? a To detect and diagnose faults using OBD1/OBD2 systems b To tune engine performance manually c To read only fuel level data d To replace car parts automatically 2 What does OBD stand for? a On-Board Diagnostics b Overboard Diagnostics c Overdrive Battery Diagnostics d On-Board Dialogs 3 Which vehicles use OBD1 versus OBD2? a OBD1 for all vehicles; OBD2 optional b OBD1 for vehicles pre-1994; OBD2 for vehicles after 1996 c OBD1 is for gasoline; OBD2 for diesel only d OBD2 for older cars; OBD1 for newer 4 Name one main function of a scanner tool. a Replace ECU software without prompts b Increase engine displacement c Read and clear diagnostic trouble codes (DTCs) d Fix mechanical wear automatically 5 What is a CAN Test Box used for? a A box of connections and a protocol detector for CAN networks b A replacement ECU programmer c A device for accelerating fuel injection d A battery charging tool 6 What device is used to visualize electrical waveforms in automotive circuits? a Fuel pressure gauge b OBD adapter c Multimeter d Oscilloscope 7 DC vs AC mode on an oscilloscope: which is true? a DC filters the DC component; AC shows only DC b DC shows the real waveform; AC filters the DC component c DC and AC are the same for automotive use d DC shows current; AC shows voltage only 8 What is a key safety tip when testing with an oscilloscope? a Always power the vehicle from a separate power supply b Ensure the probe grounds share the same circuit ground c Disconnect all sensors before testing d Ground the battery directly to earth 9 Which brands are examples of automotive multimar scanners? a Dell, HP, Asus b Bosch Home, Philips, Samsung c Nikon, Canon, Epson d G-Scan, AUTEL, LAUNCH 10 What leak-test pressure is recommended for the SDT103 detector? a 10–20 psi b 45–50 psi c 75–90 psi d 100–120 psi Explicación 1 Scanners interface with the vehicle's onboard computer to read fault codes and live data via OBD protocols. 2 OBD is the standard for retrieving diagnostic trouble codes from the vehicle's ECU. 3 OBD1 and OBD2 generations differ in connectors and protocols; OBD2 is the later standard. 4 Common scanner tasks include reading codes and clearing them, plus data display. 5 CAN Test Box helps interface with CAN networks and detect protocol details. 6 An oscilloscope displays voltage vs. time to analyze signals in circuits. 7 DC mode shows the actual signal; AC mode removes the steady DC offset. 8 Common-sense grounding avoids ground loops and false readings. 9 Multibrand scanners like G-Scan, AUTEL, and LAUNCH read many vehicle brands. 10 The guide recommends 45–50 psi to avoid damaging the cooling system during leak tests.

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Automotive Diagnostics Quiz

Test

À propos de cette activité

Créé par

Téléchargez la version pour jouer sur papier

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Automotive Diagnostics QuizVersion en ligne

par Marco Vinicio Noroña Merchán

What is the primary use of a scanner in cars?

What does OBD stand for?

Which vehicles use OBD1 versus OBD2?

Name one main function of a scanner tool.

What is a CAN Test Box used for?

What device is used to visualize electrical waveforms in automotive circuits?

DC vs AC mode on an oscilloscope: which is true?

What is a key safety tip when testing with an oscilloscope?

Which brands are examples of automotive multimar scanners?

What leak-test pressure is recommended for the SDT103 detector?

Explicación