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TSB 18-014-01

Performance Enhancement For Severe Cold Weather Environments

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Date: July 9, 2001

Models: 1998 1/2-2002 BR/BE Ram Trucks

NOTE: THIS BULLETIN APPLIES TO ALL RAM TRUCKS EQUIPPED WITH A 5.9L 24-VALVE CUMMINS DIESEL ENGINE WITH A 49-STATE EMISSIONS CALIBRATION AND AN AUTOMATIC TRANSMISSION.

Discussion:

This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software (59t7a)

Symptom/Condition:

Customer may experience hard starting and/or idle speed fluctuations.

Cummins 24-valve engines used with automatic transmissions can be severely effected by the use of sub-grade #1 diesel fuel when ambient temperatures are below 0°C (32°F), typically prevalent during the Winter months in Alaska, Northwestern Canada, and similar climates/temperatures elsewhere.

NOTE: THIS CHANGE WILL HAVE NO EFFECT ON PERFORMANCE DURING WARM WEATHER OR WHEN STANDARD GRADE DIESEL FUELS #1 OR #2 ARE USED.

NOTE: VEHICLES WITH 49-STATE CERTIFICATION CAN APPLY THIS CALIBRATION CHANGE IF NEEDED. THE CALIBRATION CAN BE CHANGED BACK TO THE ORIGINAL CALIBRATION IF DESIRED.

Diagnosis: 

1. Using the Diagnostic Scan Tool (DRBIIII) with the appropriate Diagnostic Procedures, verify all engine/transmission systems are functioning as designed. If other DTC's are present, record them on the repair order and repair as necessary before proceeding further with this bulletin.

2. If the condition above has been verified, perform the repair procedure.

Parts Required:
Qty. Part No. Description
1 04669020 Label, Authorized Software Update
1 04275086 Label, Authorized Modification

Equipment Required:
CH6000A Scan Tool   (DRB III)
CH7035 General Purpose Interface Bus Cable (GPIB)
CH7000/7001 J1962 Cable
  MDS2 (Mopar Diagnostic System)

NOTE: THE MDS2 AND DRB III ARE REQUIRED TO PERFORM PART OF THIS REPAIR. WHEN USING THE MDS2 AND THE DRB III, THE SYSTEM MUST BE OPERATING AT CIS CD 2086 OR HIGHER (2086 ARRIVES IN DEALERSHIPS ON JULY 9, 2001).

Repair Procedure: 

1. Log onto the MDS2 (Mopar Diagnostic System).

2. Connect the MDS2 and DRBIII to the vehicle and switch the ignition key to"ON".

NOTE: AUTO CONNECTION WILL OCCUR ONCE THE DRB III, MDS2, AND VEHICLE ESTABLISH COMMUNICATION. THE "CANNOT READ VIN FROM DRB III" MESSAGE (ON THE MDS2) WILL BE REPLACED BY THE VEHICLE VIN. PRESS THE "OK" BUTTON ON THE MDS2 TO REQUEST A L4DS2 SESSION FOR THE VEHICLE VIN INDICATED. PRESS THE "OK"BUTTON WHEN ASKED TO BEGIN SESSION.

3. Push the FLASH tab on the MDS2.

4. Select READ PART NUMBERS FROM VEHICLE and click SHOW UPDATES on the MDS2.

NOTE: A MESSAGE MAY APPEAR (AFTER STEP 3 OR 4) THAT INDICATES NO UPDATES ARE AVAILABLE. IF THIS OCCURS, MAKE SURE YOUR DIAGNOSTIC EQUIPMENT IS OPERATING AT THE LATEST SOFTWARE LEVEL AS LISTED EARLIER IN THIS BULLETIN. IF THE LATEST SOFTWARE IS INSTALLED, AND NO UPDATES ARE AVAILABLE ANOTHER VEHICLE CONDITION EXISTS THAT WILL REQUIRE FURTHER INVESTIGATION.

5. Select the new software part number with the light pen and click UPDATE CONTROLLER SOFTWARE.

6. The MDS2 and DRB III will prompt for any operator action needed during the remainder of the reprogramming process.

NOTE: DUE TO THE PCM REPROGRAMMING PROCEDURE, A DTC MAY BE SET IN OTHER MODULES (EATX, BCM, MIC, SKIM, ETC.) WITHIN THE VEHICLE, IF SO EQUIPPED. SOME DTC'S MAY CAUSE THE MIL TO ILLUMINATE. ALL DTC'S RELATE TO A LOSS OF COMMUNICATIONS WITH THE MODULE THAT IS BEING REPROGRAMMED. CHECK ALL MODULES, RECORD THE FAULTS, AND ERASE THESE FAULTS PRIOR TO RETURNING THE VEHICLE TO THE CUSTOMER. ERASE ANY FAULTS IN THE PCM ONLY AFTER ALL OTHER MODULES HAVE HAD THEIR FAULTS ERASED.

NOTE: THE FOLLOWING STEPS ARE REQUIRED BY LAW:

7. Type the necessary information on the "Authorized Software Update Label" p/n 04669020 (Fig. 1). Attach the label to the PCM and cover the label with the clear plastic overlay.

8. Type the necessary information on the "Authorized Modification Label" p/n 04275086 and attach the label near the VECI label (Fig. 2).

 
1 - POWERTRAIN CONTROL MODULE P/N (INSERT P/N) USED
2 - CHANGE AUTHORITY: TSB XX-XX-XX
3 - DEALER CODE: XXXXX
4 - DATE: XX-XX-XX

Notes: 

Policy:    Reimbursable within the provisions of the warranty.

Time Allowance:
Labor Operation No:    
08-19-41-94 Module, Powertrain --Reprogram 0.5 Hrs.

Failure Code:
FM Flash Module

 


Thanks to Bob Bergevin for supplying this TSB information

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This page was edited on: May 3, 2004