SERIES 60 EGR TECHNICIAN'S GUIDE
DDC Code #
(Flashed)
PID
SID
FMI
Description
83
73
-
0
Pump Pressure High
83
411
-
0
EGR Delta Pressure High
83
412
-
0
EGR Temperature High
85
190
-
0
Engine Overspeed
85
190
-
14
Engine Overspeed Signal
86
73
-
3
Pump Pressure Sensor Input Voltage High
86
108
-
3
Barometric Pressure Sensor Input Voltage High
87
73
-
4
Pump Pressure Sensor Input Voltage Low
87
108
-
4
Barometric Pressure Sensor Input Voltage Low
Table 4-1
Flash Codes, SAE Codes, Descriptions
LOGIC CODES (MECHANICAL FAILURES)
Logic codes indicate the detection of mechanical failures by the DDEC system. The response
will be a Flash Code.
Diagnosing Flash Code 39
Failure Mode
:
SID 146, FMI 7 — EGR Valve Not Responding
Indicates
:
EGR flow requested by DDEC and no EGR flow detected.
SID 146, FMI 7 will be set by the ECM if, the signal from the Delta P sensor and EGR
temperature sensor indicate EGR flow is below a minimum allowable flow when the ECM is in
“EGR Mode” for a period greater than 50 seconds.
Response
: The CEL will be illuminated and the system will be forced into “Boost Mode” (EGR is
Disabled) for the remainder of the ignition cycle.
Possible Causes
:
EGR valve mechanical failure (closed)
Plugged EGR cooler
Defective Delta P sensor
Plugged Delta P ports
VNT vanes stuck in an open position
Exhaust leaking at the S Pipe
Exhaust leaking at the EGR valve
Leaking air lines from the VPOD to the actuators (insufficient air supply)
Leaking or low vehicle air supply to the VPODs
VPOD mechanical failure
All information subject to change without notice.
(Rev. April 2004)
4-7
7SE60 0404
Copyright © 2004 DETROIT DIESEL CORPORATION
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