RAM 2500 Truck 4WD L6-5.9L DSL Turbo VIN C (2004)
Engine Control Module: Customer Interest
Emissions - OBD Check/IM Test Failure
NUMBER: 18-030-10
GROUP: Vehicle Performance
DATE: October30, 2010
WHENEVER A 2004 -2005 MODULE IS REPROGRAMMED, THE DRBIII® MUST BE USED FOR FLASHING ECUs.
SUBJECT:
Flash: Smog Check On Board Diagnostic OBD Test OR Inspection And Maintenance Check Will Not Pass
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Engine Control Module (ECM) with new software.
MODELS:
2004
DR
Ram Truck (2500/3500 Pick Up 5.9L)
2005
DH
Ram Truck (2500/3500 Pick Up 5.9L)
NOTE:
This bulletin applies to 2004 & 2005 vehicles equipped with a 5.9L Cummins Diesel Engine (sales code ETH) with California emissions (sales
code NAE) built after December 7, 2003.
NOTE:
EPA or Federal certified vehicles from this period were not OBD regulated, and as a result are not subject to a Smog Check, therefore this bulletin
does not apply to EPA or Federal certified vehicles.
SYMPTOM/CONDITION:
The customer's vehicle may have difficulty passing a government mandated SMOG check because 2 or more of the OBD monitors may report as not
ready. This issue now affects RAM diesel vehicles due to recently mandated changes to SMOG check programs in some locations, including California.
NOTE:
The SMOG check is also known as an Inspection/Maintenance, or I/M, test.
DIAGNOSIS:
Using a Scan Tool (DRBIII(R)) with the appropriate Diagnostic Procedures available in TechCONNECT, verify all engine systems are functioning as
designed. If any DTC's are present record them on the repair order and repair as necessary before proceeding further with this bulletin.
Using the scantool, determine the current software level of the ECM. Record this number on the repair order. Is the software suffix level AJ for 2004
MY OR level AH for 2005 MY (or later)?
^
Yes >>> This bulletin does not apply. The latest revisions for California emissions readiness monitor is included in this calibration. Further diagnosis
is required.
^
No >>> If the above symptom/condition is experienced, Proceed to REPAIR PROCEDURE.
SPECIAL TOOLS / EQUIPMENT REQUIRED: