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TSB 18-022-00

2001 Model Year Engine Spark Knock

NOTE: THIS BULLETIN HAS PROBABLY BEEN SUPERSEDED BY TSB 18-006-01

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Date: Dec 01, 2000

Models: 2001 BR/BE Ram Truck with gas engine

2001 (BR/BE) Ram Truck
2001 (DN) Durango

NOTE: THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH A GASOLINE ENGINE. SEE THE TABLE BELOW FOR SPECIFIC APPLICATION

VEHICLE ENGINE TRANSMISSION EMISSIONS CD RELEASE
BR/BE 3.9L A4 / M5 Fed and Calif Use 2072
BR/BE 5.2L A4 / M5 Fed and Calif Use 2072
DN R/T 5.9L A4 Fed and Calif Use 2072
      
Legend: A3 = 3 spd auto A4 = 4 spd auto M5 = 5 spd manual  

NOTE: The following emission packages are not approved and are excluded from this bulletin. The PCM calibration of any excluded vehicle is not to be reprogrammed for a spark knock complaint. Before attempting a reprogramming session inspect the type of vehicle and engine for possible exclusion.

VEHICLE TYPE ENG / TRANS / EMISS
BR/BE ALL 5.9L Heavy Duty (EMM)
BR/BE ALL 8.0L (EWA)

Discussion:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software (calibration level 01Cal1ED and 01Cal13)

Symptoms:
Some vehicle engines may exhibit a light-to-moderate spark knock condition during acceleration (under load).

Diagnosis: 

1. Verify that the following NOTE(S) have been reviewed and completed as necessary.

2. Verify that the engine coolant contains the correct mixture of a quality antifreeze to water. The coolant mixture should consist of 44% to 68% antifreeze.

3. If the only condition seen is the light-to-moderate engine spark knock, perform the Repair Procedure.

NOTE: WHEN PULLING A HEAVY LOAD OR DRIVING A FULLY LOADED VEHICLE USE A PREMIUM UNLEADED FUEL TO HELP MINIMIZE SPARK KNOCK.

NOTE: WHENEVER A POWERTRAIN CONTROL MODULE IS REPLACED DUE TO FAILURE, THE SOFTWARE OF THE REPLACEMENT CONTROLLER MUST BE VERIFIED FOR THE LATEST REVISION LEVEL. USE THE FLASH PROCEDURE TO UPDATE REPLACED CONTROLLERS AS NECESSARY.

Parts Required:

1    04669020 Label,   Authorized Software Update
1    04275086 Label,   Authorized Modification

Equipment Required:

  CH6000              Scan Tool   (DRB III)
  CH7035             General Purpose Interface Bus Cable (GPIB)
  CH7000/7001    J1962 Cable
                            MDS2

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 2064 OR HIGHER (SEE TABLE ON PAGE ONE).

Repair: 

1.    Log onto the MDS2 system.

2.    Connect the MDS2 (Mopar Diagnostic System) and DRB III (Scan Tool) 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 MDS2 SESSION FOR THE VEHICLE VIN INDICATED. PRESS THE "OK" BUTTON WHEN ASKED TO BEGIN SESSION.

3. Select 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 (TCM, 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 (Figure 1). Attach the label to the JTEC PCM and cover the label with the clear plastic overlay.

 8.  Type or print the following information on the Authorized Modification Label and attach the label near the VECI label (Fig 2).

Notes: 

Policy:    Reimbursable within the provisions of the warranty.

Time Allowance:
Labor Operation No:  08-19-44-92 (Reprogram PCM) ...................................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