Block 9 Quiz Electrical Diagnostics

Voltage drop across a starter cable should NOT exceed:

• 0.1V

• 0.5V

• 1.0V

• 1.5V

Alternator ripple voltage over ___ indicates diode failure:

• 0.1V

• 0.3V

• 0.5V

• 1.0V

Parasitic drain exceeding ___ requires diagnosis:

• 20mA

• 50mA

• 100mA

• 200mA

When testing circuit resistance, you should:

• Apply power

• Disconnect power

• Use highest range

• Measure under load

A fuse that blows immediately indicates:

• Short circuit

• Open circuit

• High resistance

• Corrosion

CAN bus dominant state voltage is:

• 0V

• 2.5V

• 3.5V

• 5.0V

Relay contact resistance should measure below:

• 0.1Ω

• 0.5Ω

• 1.0Ω

• 5.0Ω

Proper voltage drop test on ground circuit requires:

• Battery disconnected

• Meter in series

• Meter in parallel

• Circuit powered

LIN bus maximum speed is:

• 1 kbps

• 10 kbps

• 20 kbps

• 100 kbps

A bulb with 12V supply but 0A current has:

• Open circuit

• Short circuit

• High resistance

• Correct operation