Register Login
FIAT Auto Specialist Team
Reply
 
Thread Tools
Old 4 Weeks Ago   #1
Join Date: Jul 2019
Posts: 2
Thanks: 0
Trader Rating: 0
United Kingdom 
Control unit programming.

Hi there. Was wondering if someone may be able to help me. Iím working on a 2011 Punto Evo with stop start. The initial issue was a fault airbag control module. It was replaced with a second hand one that had the crash data erased on it. After fitting this airbag module the Engine management light has illuminated and is showing code P1850-15: Neutral position switch short circuit. I know that the vehicle never had this sensor from standard and the stop start would have worked via the clutch switch. something in the engine ECU has to be configured incorrectly by me. Does anyone have any suggestions? Many thanks.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Jamiehill1990 is offline Reply With Quote Quote 
Old 4 Weeks Ago   #2
Join Date: May 2011
Location: Norfolk UK
Posts: 9,540
Thanks: 421
Blog Entries: 8
Trader Rating: 0
United Kingdom 
Re: Control unit programming.

Was the replacement airbag module from an automatic transmission car ?
__________________
Maker and voice behind the YouTube channel PuntoHowTo 10k subscribers canít be wrong

And now the owner of a shiny new PuntoHowTo Drivetribe
AndyRKett is offline Reply With Quote Quote 
Old 4 Weeks Ago   #3
Join Date: Jul 2019
Posts: 2
Thanks: 0
Trader Rating: 0
United Kingdom 
Re: Control unit programming.

I donít know to be honest, it certainly might have been. It was bought online what significance might that have had?
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Jamiehill1990 is offline Reply With Quote Quote 
Old 4 Weeks Ago   #4
Join Date: May 2011
Location: Norfolk UK
Posts: 9,540
Thanks: 421
Blog Entries: 8
Trader Rating: 0
United Kingdom 
Re: Control unit programming.

Netrual position switch is something fitted to auto boxes, if the airbag ecu has programming for an auto and is looking for this sensor to make decisions about when or when not to deploy the airbags then it’s likely this is your problem.

Generally speaking you buy a replacement ecu that has exactly the same numbers on it as the one you take out. There can be a number of different types of ecu for one model year of car.
__________________
Maker and voice behind the YouTube channel PuntoHowTo 10k subscribers canít be wrong

And now the owner of a shiny new PuntoHowTo Drivetribe
AndyRKett is offline Reply With Quote Quote 
Reply
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump
Similar Threads
Thread Thread Starter Forum Replies Last Post
(T) new control unit moody Punto (Mk2/2b) 3 29-11-2015 14:11
(T) What's does the control unit do? krossi 500 9 23-05-2012 16:38
(T) Injection Control Unit dantheman1 Bravo / Brava 2 06-01-2010 16:36
(T) Alarm Control unit programming procedure ahhl Multipla 0 18-11-2009 07:30
(T) Heater Control Unit MikeWhitcombe Cinquecento / Seicento 7 09-04-2005 09:46