GM Volt Forum banner

1 - 10 of 10 Posts

·
Registered
Joined
·
3 Posts
Discussion Starter · #1 ·
Hello from sunny Portugal.

I bought a used Ampera here 3 weeks ago. A couple of days ago after driving over some very rough road in the middle of roadworks I returned home to find the car wouldn't charge and the message 'Service high voltage charging system' was displayed. My old Autel scanner read some codes but the message returns after clearing. Volt forums indicate that DTC P1FFF is 'locked' and can only be cleared by reflashing the HPCM2 module - assuming it's a false fault which seems to be fairly common.

There is little consumer protection here and caveat emptor definitely applies!

I took the car to the main Opel dealer in the state where I live and after 6 hours of dossing in the nearby shopping mall was told they 'didn't have the equipment to do it' and hadn't looked at the car. I was told to take it to the main dealer in Lisbon - more than 3 hours away.

I know I can register for tis2web and get an hourly/daily subscription, and hardware is pretty cheap (e.g. VCX nano) and reflash it myself with SPS.

Question: Can the basic tis2web/SPS subscription re-flash the HPCM2 module or does it require 'Enhanced Access' and therefore a DUNS number for a real company only?

Thanks in advance for any clues!

deGuv
 

·
Registered
Joined
·
64 Posts
Not sure about international locations, but here in North America you can sign up for a 2 day SPS subscription, flash the HPCM2 and erase all faults. Driving on rough roads may displace the magnetic float inside the coolant tank and trigger the fault or it could be a defective reed switch which are prone to failure.

This issue is discussed at length here,
http://gm-volt.com/forum/showthread.php?255506-WOTs-COOLANT-LEVEL-SENSOR-SERVICE-HIGH-VOLTAGE-CHARGING-SYSTEM-MESSAGE-DEFEAT-PLUG/page24

The permanent solution is to install the WOT defeat plug and reprogram the HPCM2, which is what I did below.


Quote Originally Posted by garett0439 View Post
I just installed my defeat plug after my old sensor had failed, then used the VCX Nano and SPS to reprogram the HPCM2 in order to clear the SHVCS code.

I'm now charging, thanks WOT!

Thanks Garett (page 9) for the lowest cost DIY solution ... thanks WOT for everything else!

Did a daily erase of the POAA6/P1fff messages until the defeat plug arrived, installed WOT Defeat Plug, programmed HPCM2 with a VCX Nano via the ACDelco TDS website (2 day subscription) then hit the Erase Faults button after programming.

Done ... no messages ... charging Normal.


*** For those more technically inclined or without dealer support, the VCX Nano needs firmware updates via VXDIAG's VCX Manager to be used as a J-2534 pass-though programmer. Windows needs a Java update and the TDS website installs software before you get started. After that ... it's a 10 minute job! PM me for further details, this is not the forum to discuss SPS programming. ***
 

·
Registered
Joined
·
3 Posts
Discussion Starter · #3 ·
Thanks for the reply! Nobody knew on any of the European forums. Defeat plug will be next!

Answering myself in case it helps anyone else: Yes, with a standard (non-enhanced) tis2web account you can use SPS to reprogram the HPCM2 module and clear the locked fault code. My Ampera is charging once more.

I used a VCX Nano dongle, so with the cost of that, joining fee for the GM portal, plus 2x 1-hour subscriptions (I didn't realise the first hour I bought would start immediately - I didn't have the dongle at that point) cost me 170€ and saved me a 6-hour round trip plus probably a hotel for the night plus whatever the main dealer charged for the reprogram.

Win!

'guv
 

·
Registered
Joined
·
4,728 Posts
The GME InfoTech page is where to go for the Euro cars
They do have a wide range of subscription options for service programming access for reflashing providing you have a compliant J2534 device
https://www.gme-infotech.com/info.html
Depending on what module you are reflashing you may also require a security access code, so look for that on the CARPASS card hopefully retained in the glovebox materials.


HTH
WopOnTour
 

·
Registered
Joined
·
4 Posts
vxdiag vcx nano for gm/opel gds2 FEATURES:
chinacardiags.com/wholesale/vxdiag-vcx-nano-for-gm-opel-gds2-diagnostic-tool-wifi-version-17410.html

* Fully compatible with SAE-J2534-1 & SAE-J2534-2
* USB vehicle-to-PC connectivity
* All current and most legacy vehicle protocols: CAN, UART, KW2000, Class2, GM LAN, etc.
* Supports Windows® XP
* CE and FCC compliance for hardware
* Firmware Updatable

VXDIAG VCX NANO for GM/OPEL Compatible Software:

* Support PC-based diagnostics with rollout of the Global Diagnostic System GDS & GDS2
* Support GM TIS2WEB online Service Programming System (SPS)
* Support Tech2Win application to offering a larger screen with all of the Tech 2 tool functionality

Global Diagnostic System (GDS & GDS2)

* New Diagnostic Application Software required for all GM Global Architecture (Global A) Vehicles.
* GDS & GDS2 is software which runs on a specific PC. Updates received via TIS2Web.

GDS 2 Provides the Following Capabilities in Multiple Languages:

* Read codes, code status, Freeze Frame data and Clear Codes.
* Read VIN, ECU part numbers and software numbers.
* Record, store and replay Stored data.
* Control and monitor Output Control functions.
* Configure and Reset functions.
* Record or display history of the previous vehicle diagnostic sessions.

Service Programming System (SPS):

* Passthrough programming on GM past model and Global A vehicles
* Increase reprogramming speed 20-70% and get ready to service new models

For pass-through programming of electronic control units on all vehicles built since 1996 and future model releases. The VCX Nano Prime GM KIT is between 20% and 70% faster than Tech 2.For example, on a new Tahoe hybrid with 7 ECUS, it would normally take 2 full hours to reprogram. But, with VCX Nano the process is completed in just 45 minutes. That’s a 64% difference and means you could service 10vehicles rather than 4in an 8-hour day! The potential to increase revenues is dramatic.

New Vehicles Model list:

VCX Nano Prime GM KIT is the only full-spectrum diagnostic and reprogramming tool capable of servicing new Delta and Epsilon vehicles (with auxiliary CAN bus that cannot be serviced by Tech2).Below is the list of vehicles being delivered this year that will rely exclusively on this tool for service.

Tech2Win Function:

Tech2Win, an application version of the Tech 2 and CANdi (Control Area Network diagnostic interface) moduleTech2Win can be used during a vehicle road
test, offering a larger screen with all of the Tech 2 tool functionality. The Tech2Win application offers all of the features and functions of the Tech 2 for Opel, Saab etc

this is from china car diagnostic tool website chinacardiags.com
 

·
Registered
Joined
·
1 Posts
Hi, just sent you a PM. Hopefully you can help me on this process.
Boa noite enviei uma mensagem privada. Li os seus posts e gostaria de ajuda para este procedimento.
Será possível contacta lo ?
 

·
Registered
Joined
·
3 Posts
Discussion Starter · #9 ·
Hello Murk,
I can try. The process has changed slightly in that the GME website no longer includes SPS programming in the basic 12€ TIS ,EPC, VIS subscription, you need the new SPS Vehicle Programming (Basic) subscription which is 35€ for 2hours. Be sure to select Opel/Vauxhall at the top and double-check immediately before paying. The (default) Chevrolet option will waste your money. Don't ask me how I know...
 
1 - 10 of 10 Posts
Top