Spool Lock Coil Short To Battery

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3illingsEnterprises

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Joined
Jan 13, 2012
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Hi, I have have 753 Bobcat skid-steer loader, but we have been having some problems. We are getting a 18-05 code, which I looked up as a "Spool Lock Coil Short to Battery". That is kind of odd, because the wires run from the Spool Lock Coils to the Computer. So where exactly is this coming from? The reason I am even bringing this up, is because this unit has had a hard time holding a charge, and we were assuming that one of these coils must be draining the battery down when off. I checked connectors where they come out of the wiring harness, made sure they were all cleaned and attached, but the error code will not leave. Any more ideas? -- Abraham
 

Tazza

Moderator
Staff member
Joined
Dec 7, 2004
Messages
16,829
A bad alternator is the most common cause for a drained battery when left over night. If a diode goes bad it can drain the battery slowly.
As for the error, its possible the coil is bad causing this issue. They can crack and short out on the stem.
 

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