US639_2

DTC:
Bulletin:
SPN 639 FMI 2
GDC22-217
Date:
Description:
Applies to:
April 01, 2022
See below for fault code description(s)
US ARMY VEHICLES
General Information
These repair instructions are intended to address the following fault(s):
DTC
Description
Possible
Cause
SPN 639
FMI 2
J1939 Engine (EEC1) Electronic Engine Controller Loss of Communication or
Time Out - Data Erratic, Intermittent, or incorrect
J1939 Electronic Retarder Timeout or Invalid Signal (ERC1) - Data Erratic,
Intermittent, or incorrect
J1939 Electronic Engine Controller 2 Timeout or Invalid Message (EEC2) - Data
Erratic, Intermittent, or incorrect
Timeout or Invalid Data on XBR Message - Data Erratic, Intermittent, or incorrect
J1939 Transmission (ETC1) Electronic Transmission Controller, loss of
communication message or time out - Data Erratic, Intermittent, or incorrect
AUXIO CAN Message Timeout - Data Erratic, Intermittent, or incorrect
J1939 Engine (EEC3) Electronic Transmission Controller loss of communications
or time out - Data Erratic, Intermittent, or incorrect
J1939 Transmission (ETC2) Electronic Transmission Controller loss of
communications or time out - Data Erratic, Intermittent, or incorrect
J1939 Engine (EEC1) Electronic Engine Controller loss of communications
between EC-80 ECU and other devices - Data Erratic, Intermittent, or incorrect
J1939 Retarder (ERC1) Electronic Retarder Controller loss of communications or
time out - Data Erratic, Intermittent, or incorrect
J1939 Engine (EEC2) Electronic Engine Controller loss of communications or time
out - Data Erratic, Intermittent, or incorrect
J1939 Transmission Loss of Communications, ETC1 message - Data Erratic,
Intermittent, or incorrect
J1939 Engine Loss of Communications, EEC2 message - Data Erratic,
Intermittent, or incorrect
J1939 Transmission Loss of Communications, ETC2 message - Data Erratic,
Intermittent, or incorrect
Possible
(Observable)
Symptoms
N/A
N/A
Required Parts
Part Number
Description
Quantity
N/A
PTT, VOCOMII
1
© 2022 Mack Trucks, Inc. Information is subject to change without notice.
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DTC:
SPN 639 FMI 2
Bulletin:
Date:
GDC22-217
April 01, 2022
Repair Instructions
Please reference the following file(s):
•
•
IETM, WP File Name: T01425
IETM, WP Number: 468
Additional Resources
•
For support with a warrantable fault/fault code, please submit an SF368 Product Quality Deficiency Report
(PQDR) in the Product Data Reporting & Evaluation Program (PDERP) at https://www.pdrep.csd.disa.mil/
and CC or forward the PDREP generated .pdf copy of the SF368 to appropriate Mack Defense Warranty
Managers:
Margaret Baranowski
(484)-743-7127
[email protected]
William Beard
(610)-573-4954
[email protected]
•
For assistance with normal service or technical related questions, please contact our Contractor Logistics
Support (CLS) provider POCs:
Rich Rader
(910) 797-0903
[email protected]
Gil Esplana
(254) 404-5409
[email protected]
© 2022 Mack Trucks, Inc. Information is subject to change without notice.
Page 2/2