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Which symptom does a corroded earth strap produce?

  • A.Slow cranking with heat at the connection
  • B.No cranking at all, since the circuit is broken entirely and no current can reach the starter motor from the battery
  • C.Overcharging
  • D.A rapid clicking from the solenoid, which follows from the reduced voltage available at the hold-on winding

Answer: A

Resistance in the earth wastes voltage as heat and starves the motor, so cranking is slow and the strap gets warm. A completely broken strap does give no cranking, which makes the second option the extreme case of the same fault. Checking which component actually carries the load settles most questions of this kind at once. Reading the definition literally, rather than recalling a summary, avoids the usual confusion. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision.

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