I have a 1998 Detroit Diesel engine 60's series on a 1999 Freightliner Century class truck. I had to replace the starter (Delco Remy, 42MT with 39MT). After replacing the starter, the jake brakes do not engage (work) anymore and I get a check engine light on along with 2 dash errors saying something about "driver aux" being out. I don't have the exact error message right now. The mechanic triple checked the wiring and he swears everything was connected correctly, but something must have happened with the wiring, since Jake brakes worked before the starter replacement. This has happened before when I had a starter replaced by PETRO, but I do not know how they fixed it later on.
Jake Brakes don't work after Starter replacement
Discussion in 'Trucks [ Eighteen Wheelers ]' started by LupusDacicus, Dec 9, 2014.
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Never worked on Freightliners much. Some trucks have a breaker labeled "IGN AUX" which runs wipers, engine fan, and Jake brake. The old trucks used what was called a "Thermo Cutoff", a bad short would kill that thermo cutoff, or fuse, breaker... Check out your breaker box, might get lucky.
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