RAM 3500 HD Truck 2WD L6-6.7L DSL Turbo (2008)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
Engine Controls - MIL ON/DTC P2262 Set
NUMBER: 09-002-09
GROUP: Engine
DATE: May 23, 2009
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 11-001-08 and 11-002-08 BOTH DATED MAY21, 2008. THIS ISA
COMPLETE REVISION AND NO ASTERISKS HAVE BEEN USED TO HIGHLIGHT REVISIONS.
THE wiTECH DIAGNOSTIC APPLICATION IS THE PREFERRED METHOD FOR FLASHING ECUs.
HELP USING THE wiTECH DIAGNOSTIC APPLICATION FOR FLASHING AN ECU IS AVAILABLE BY SELECTING "HELP" THEN "HELP
CONTENTS" AT THE TOP OF THE wiTECH DIAGNOSTIC APPLICATION WINDOW.
THE wiTECH SOFTWARE LEVEL MUST BE AT RELEASE 9.05 OR HIGHER TO PERFORM THIS PROCEDURE.
StarMOBILE DESKTOP CLIENT, StarMOBILE STANDALONE MODE OR StarSCAN MAY ALSO BE USED TO PERFORM THIS
PROCEDURE.
SUBJECT:
MIL Illumination Due to DIG P2262 - Revised Diagnosis and Repair Procedures
OVERVIEW:
This bulletin discusses revised diagnostic and repair procedures for DTC P2262 - Turbocharger Boost Pressure Not Detected - Mechanical. Recent PGM
calibration updates have improved the robustness to this DIG through updated diagnostic strategies. As a result, many events which have no adverse
affects on drivability, emissions, or reliability will no longer set the P2262 fault.
MODELS:
2007 - 2009
(DH/D1)
Ram Truck (2500/3500)
NOTE:
This bulletin applies to vehicle equipped with a Cummins 6.7L engine (sales code ETJ).
DISCUSSION:
Malfunction Indicator Lamp (MIL) illumination due to Diagnostic Trouble Code (DTC):
P2262 - Turbocharger Boost Pressure Not Detected - Mechanical.
As a result of recent PCM calibration updates, the proper repair for some P2262 faults is to just update the calibration, while others will require cleaning
or replacing the turbocharger. Scan Tool software update 9.05 (and later) includes a P2262 diagnosis test for this purpose. This diagnostic test uses
Freeze Frame data stored in the PCM and a dynamic turbocharger response test to determine the correct repair for each truck with DTC P2262.
The new P2262 diagnosis test must be used prior to performing any of the following:
^
Clearing codes.
^
Updating the PCM.
^
Beginning the turbocharger repair.
The test must be used with the key in the run position with the engine off, and with coolant temperature between 50°F and 180° F. The time required to
run this test will vary with the calibration level of the truck, from a few seconds up to a couple minutes. This is normal operation for the test.
NOTE:
The P2262 diagnosis test MUST NOT be used after the repair is complete, as this test CANNOT be used to confirm the repair. Test results will be
inaccurate.
