Diagnosing Flash Code 49; Fmi 0— Turbo Compressor Out Temperature High; Egr Flow Too Low - Detroit Diesel Series 60 EGR Technician Manual

DDEC IV DIAGNOSTIC CODES
Failure Mode: SID 147, FMI 14 — EGR Flow Too Low
Indicates: EGR flow requested by DDEC and insufficient EGR flow detected.
SID 147, FMI 14 will be set by the ECM if, the signal from the Delta P sensor and EGR
temperature sensor indicate EGR flow is below a desired flow for a period greater than 50 seconds.
Response: The CEL will illuminate and a fault message will be generated.
Possible Causes:
Defective Delta P sensor
EGR cooler restriction
EGR valve leaks
EGR valve mechanical failure
Exhaust leaking at the S pipe
Leaking air lines from the VPOD to the actuators (insufficient air supply)
Leaking or low vehicle air supply to the VPODs
Plugged Delta P ports
VPOD mechanical failure
VNT vanes/actuator — mechanical failure

Diagnosing Flash Code 49

Failure Mode: FMI 0— Turbo Compressor Out Temperature High
Indicates: Turbocharger Compressor Inlet temperature or Turbocharger Compressor
Outlet temperature exceeds calibrated limits.
Response: Red Stop Lamp (RSL) will illuminate and fault message will be generated.
Probable Causes:
Restricted air filter
EGR valve stuck open
High exhaust back pressure
4-10
All information subject to change without notice. (Rev. June 2005)
7SE60 0506 Copyright © 2005 DETROIT DIESEL CORPORATION