6.7L Cummins Forum

Squid · #1 (**permalink**) 05-01-2009, 08:20 PM

I got this emailed to me and it doesn't look good for owners of 09 Dodge Ram pickups with the 6.7L Cummins(And probably other vehicles too).

From this TSB if you install anything that changes the paremeters of the ECM your truck won't start and then when you have it towed to the dealership and they fix it, it's not covered under warrenty. I'm not sure how this is legal but I'll leave that to Sema and their lawyers.

SUBJECT:
No Crank, No Start - Malfunction Indicator Lamp (MIL) With DTC U1601
MODELS:
2009 (DH/D1) Ram Trucks (2500/3500 Pick Up)
2009 (DC/DM) Cab Chassis (3500/4500/5500)
NOTE: This bulletin applies to 2009 vehicles equipped with a Cummins 6.7L diesel
engine (Sales code ETJ) built after March 04, 2009 (MDH0304XX)
programmed with bootloader software number 00 06 01 (or later). 2007 and
newer vehicles that have had the ECM replaced with the new bootloader
software will also be effected.
DISCUSSION:
This bulletin explains a Malfunction Indicator Lamp (MIL) illumination due to Diagnostic
Trouble Code (DTC); U1601 - ECU Application Software Code 1 Missing Or Corrupted.
If the Engine Control Module (ECM) does not have a calibration installed, or has an
unapproved calibration installed then the ECM will be in a Read Only Memory (ROM) boot
state. The ECM will have power but the lack of approved software will not allow the vehicle
to be started and driven. No further diagnostics of the ECM will be available at this time.
This code will be cleared and issue resolved when the ECM is updated with the correct
approved calibration. Refer to the DealerCONNECT > TechCONNECT > Service
Information for more detail.
DTC U1601 set outside of the dealership with a no crank, no start condition caused by
unauthorized (up-rate) software will
NOT be covered under the terms of the warranty.
DTC U1601 code may also be set when a legitimate flash is interrupted for any reason.
This bulletin also involves explanations of the effects that aftermarket “Up-rate Kits” have
on Cummins engine and emission systems.

NOTE: Replacement ECM's supplied by Mopar may also contain the secure
bootloader software, thus the conditions listed above may apply to 2007 and
newer vehicles if the ECM has been replaced.
NUMBER:
18-007-09

GROUP:
Vehicle Performance

DATE:
March 13, 2009

CAUTION: Some customers may come in requesting a software update because the
up-rate software does not recognize the secure bootloader software
(even though the controller may be up to date). This should serve as a
warning that the customer is attempting to tamper with the calibration in
the vehicle's ECM.
Up-Rate kits are numerous and may include aftermarket software downloads.
Engines that have had tampering will generate excess soot and may damage the
Turbocharger, Diesel Particulate Filter (DPF) and Oxygen Sensors (O2) and/or other
emission system(s), air handling or fuel control components.
Some of the changes caused by Up-Rate kits (but not limited to) :
·
Engine calibration, including emissions.

·
Governors, including engine speed and vehicle top speed.

·
Torque and horsepower (which may cause other drive line component damage).

·
Diagnostics, preventing MIL illumination.

·
Drivability and torque management control.

DIAGNOSIS PROCEDURE:
1. Refer to the detailed service information available in DealerCONNECT >
TechCONNECT under: Service Info > 28 - DTC-Based Diagnostics > MODULE,
Engine Control (ECM), 6.7L > Diagnosis and Testing > U1601 - ECU Application
Software Code 1 Missing Or Corrupted.
POLICY:
Information Only.

18-007-09 -2-

BIGBADDODGE · #2 (**permalink**) 05-11-2009, 12:49 PM

Well my friend bought an 09 about a month ago made homemade deletes for the DPF and EGR and we also put the edge on and intake and everything is good so far. Mine is an 07 with the same mods except mine was a kit i bought back in 07 and i have a new clutch and i have no problems either. Squid who emailed that to you?

Squid · #3 (**permalink**) 05-11-2009, 06:52 PM

The only way an owner will have problems is if you use a programmer such as the MP8, Smarty, etc that actually uploads changes to the ECM. Our Edge doesn't do that because the box under the hood intercepts the ECM signals and then sends out it's own so the ECM stays stock. Things like deletes won't have any effect on this either and not all 09 trucks have this boatloader installed, just trucks built after March 04, 2009 (MDH0304XX) and anyone that goes into the dealership now for a flash will probably have this boatloader installed and if they unknowingly own one of these programmers and upload the flash will fall victim to this no start situation.

John · #4 (**permalink**) 05-11-2009, 08:42 PM

Quote:

Originally Posted by Squid

The only way an owner will have problems is if you use a programmer such as the MP8, Smarty, etc that actually uploads changes to the ECM. Our Edge doesn't do that because the box under the hood intercepts the ECM signals and then sends out it's own so the ECM stays stock. Things like deletes won't have any effect on this either and not all 09 trucks have this boatloader installed, just trucks built after March 04, 2009 (MDH0304XX) and anyone that goes into the dealership now for a flash will probably have this boatloader installed and if they unknowingly own one of these programmers and upload the flash will fall victim to this no start situation.

Do you think they will do that on ANY vehicle..ie:2008s???

Squid · #5 (**permalink**) 05-11-2009, 09:04 PM

Quote:

Originally Posted by John

Do you think they will do that on ANY vehicle..ie:2008s???

This blurb from the TSB tells me yes but only if the boatloader software is upgraded.

Quote:

2007 and newer vehicles that have had the ECM replaced with the new bootloader
software will also be effected.

Vis-a'-vis · #6 (**permalink**) 05-12-2009, 06:24 AM

Since my Superchips programmer actually changes the program, it would be rendered useless if I had my ECM replaced...This is why I don't kick that sleeping dog

Squid · #7 (**permalink**) 05-12-2009, 07:24 AM

Quote:

Originally Posted by Vis-a'-vis

Since my Superchips programmer actually changes the program, it would be rendered useless if I had my ECM replaced...This is why I don't kick that sleeping dog

Amen to that!

BIGBADDODGE · #8 (**permalink**) 05-15-2009, 12:49 PM

So basically dont get any flashes or atleast im not

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode