040307
Practice
Mock
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Electrical & Electronic
Battery, charging, starting, lighting, networks.
Q 1 / 50
electrical-electronic
L2
A customer reports a flat battery every Monday after the car sits over the weekend. Resting battery voltage is healthy when freshly charged. Which test is the most appropriate first diagnostic step?
A
Replace the battery on age alone, since a Monday-morning flat is almost always sulphation
B
Carry out a parasitic (key-off) current draw test with the vehicle in sleep mode
C
Replace the alternator as a precaution against a leaking diode feeding the bus when off
D
Carry out only a starter load test and condemn the battery if cranking voltage sags
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