Detroit DD15 GHG14 (2014-16) Fault Code: SPN 3361 FMI 4 (ACM) Diesel Exhaust Fluid System Circuit Failed Low
DESCRIPTION:
Diesel Exhaust Fluid (DEF) system circuit low voltage signal or short to ground.
MONITORED PARAMETER:
DEF dosing unit voltage.
TYPICAL ENABLING CONDITIONS:
DEF dosing enabled then disabled.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Continuous when enabling conditions met.
TYPICAL DURATION:
50 seconds (max).
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate 25%
VERIFICATION:
Key cycle off five minutes after repair.
PROBABLE CAUSES:
1. DEF doser valve harness connector.
2. DEF metering unit failure.
3. Wiring between DEF doser valve harness and the ECM.
![International Truck ISIS - Oncommand Service Information Q4.2020 [04.2020]](https://www.ecuforcetruck.com/wp-content/uploads/2022/01/OnCommand-2020-1-300x300.png)
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