DodgeRam.info > TSB's > 18-019-01

TSB 18-019-01

Cold Idle Engine Warming

Visit Geno's Garage
for Truck accessories.
Geno's Garage Truck Accessories

Date: September 3, 2001

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

NOTE: THIS BULLETIN APPLIES TO ALL RAM TRUCKS BUILT AFTER DECEMBER 17,1997 AND EQUIPPED WITH THE 24-VALVE 5.9L CUMMINS DIESEL ENGINE.

Discussion:

This bulletin involves selectively erasing and reprogramming the Engine Control Module (ECM) with new software (Cal 55Tl8, 57Tl1, 56Tl3, 59T7b, and 59T8b.)

Symptom/Condition:

Extended idle operation, especially in cold weather, can lead to stuck valves and bent push-tubes due to insufficient cylinder heat. This allows varnishes/oils to condense on the exhaust valve stems, leading to stuck valves, and damaged valve train components. A new software feature, enabled or disabled through the DRB III (See instructions under Repair Procedure), reduces the chance of valve sticking and improves cab heat warm-up time.

Once enabled, idle speed will slowly ramp up from 800 rpm to 1200 rpm when all of the following conditions are met:

1. Intake Manifold Temperature less than 0°C (32°F) and,
2. Coolant Temp is less than 60°C (140°F) and,
3. The Transmission is in Neutral or Park and,
4. The Service Brake pedal is not depressed and,
5. Throttle = 0% and,
6. Vehicle Speed = 0 mph

Additionally, if Intake Manifold Temperature (IMT) is less than -9°C (15°F), and all of the parameters above are met, three of the cylinders will be shut off upon reaching 1200 rpm, creating a slight change in engine sound which is normal. This allows the engine to create increased heat in the cooling system, allowing more rapid engine warm up and cab heating.

Both features will automatically disable when one of the following occurs:

1. The Automatic Transmission is placed in gear (forward or reverse) or,
2. The Service Brake pedal is depressed or,
3. Throttle position is greater than 0% or,
4. Vehicle Speed is greater than 0 mph or,
5. Coolant Temperature is greater than 79°C (175°F).

Engine speed will return to normal operation at 800 rpm. If the engine continues to idle and coolant temperature is at or below 60°C (140°'F), the feature will reenable. In order to operate properly, the Accelerator Pedal Position Sensor (APPS) must stay at idle.

NOTE: ANY TYPE OF AFTERMARKET IDLE SPEED KICKER THAT ACTIVATES THE APPS WILL DISABLE THIS FEATURE.

Use of the 110V block heater will not allow the feature to function after an overnight soak. If the vehicle is left idling, without use of the block heater, 1200 rpm operation will begin when the intake temperature drops below O°C (32°F) and coolant is less than 60°C (140°F).

Diagnosis: 

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

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 2090 OR HIGHER (2090 ARRIVES IN DEALERSHIPS ON SEPTEMBER 3, 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: ONCE THE VEHICLE HAS BEEN REPROGRAMMED TO THE PROPER SOFTWARE LEVEL, YOU MUST USE THE DRB III TO ENABLE THE 3 CYLINDER IDLE FEATURE. TO DO SO FOLLOW THE INSTRUCTIONS BELOW.

7. Connect the DRB III to the vehicle without connecting to MDS2 and follow the menu structures it appears below.

8. MAIN MENU - 1998 - 2002 DIAGNOSTICS

9. 1998 - 2002 DIAGNOSTICS - ALL (EXCEPT BELOW)

10. SELECT SYSTEM - 1 ENGINE

11. CONTROLLER TYPE - 1 CUMMINS (ECM/ENGINE)

12. SELECT FUNCTION - 1 MISCELLANEOUS (Misc. is on second page)

13. 3.3 CYLINDER IDLE - Follow the instructions

The DRB III will indicate whether the feature is enabled or disabled.
14. Push 1 to Enable, 2 to Disable.

15. You are instructed to cycle the ignition to complete the repair.

16. Press Page Back to Exit.

NOTE: THE FOLLOWING STEPS ARE REQUIRED BY LAW.

17. 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.

18. 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

Policy:    Reimbursable within the provisions of the warranty.

Time Allowance:
Labor Operation No:    
08-19-47-90 Module, Powertrain --Reprogram 0.5 Hrs.

Failure Code:
FM Flash Module

Notes: 

Here is what is causing problems when you take your ETH to the dealer for this procedure:

In the DC computer system, TSB 18-019-01 only appears for the ETC engines (as a reflash to add the idle software and a procedure to enable it). In the DC computer system under the HO engine (ETH) the bulletin is not listed - probably because the software is already built into the ECM and no reflash is necessary. My dealership can't find a document that authorizes or details the procedure to enable the cold idle on the ETH engine, so they are reluctant to do it out of fear that DC may consider it to be an unauthorized modification and deny warranty coverage for a part failure - such as the injector pump or lift pump.

The procedure works for the ETH, but dealers don't have anything to tell them that it does, or that the procedure is OK to do to ETH engines.

Also: Because the BULLETIN DOES NOT APPLY TO ETH ENGINES, dealerships are NOT reimbursed by DC for performing the idle enable on the ETH. If you have your truck serviced regularly at a dealership, and you have them enable the idle while the truck is there for other service, they *may* do it for free while it is there. If you do not have your truck serviced there, it is unreasonable for you to expect the dealer to eat the cost of the technician's time and the use of the computer software - dealers have to pay DC for the software and computer hardware, and they have to pay the tech.

My dealer and I are tying to get reference information from DC to settle the issue. Since I don't have any DC technical contacts, I probably won't have any luck. Maybe my dealer can get some information, I'll let you know when we find something solid.

 


Thanks to Bob Bergevin for supplying this TSB information

  Top of Page  

  DodgeRam.info Home  

 

This page was edited on: May 3, 2004