944Hybrids: 924/944/968 and 928 V8 Conversions
Would you like to react to this message? Create an account in a few clicks or log in to continue.

944 V8 Conversions

HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

Comments: 0

Latest topics
» Rear coilover suspension setup
ECM OBDII Question EmptyToday at 3:30 pm by ThomasJoseph315

» 944 Turbo TPC Radiator Install Help Needed
ECM OBDII Question EmptyToday at 7:08 am by gwistrup

» Best engine uprights/plates
ECM OBDII Question EmptyYesterday at 10:12 am by Nath1142

» LEAKING TPC HYDROBOOST
ECM OBDII Question EmptyMon Apr 22, 2024 7:22 pm by lowform

» HYDRAULIC THROWOUT/RELEASE BEARING NOT ENGAGING FULLY
ECM OBDII Question EmptyMon Apr 22, 2024 7:12 pm by lowform

» Fesler Saratoga Top
ECM OBDII Question EmptyMon Apr 15, 2024 7:28 pm by JW1970

» Ray's 1987 944 LS1 Build & Swap
ECM OBDII Question EmptyMon Apr 15, 2024 6:59 pm by JW1970

» LS 982 5speed project here
ECM OBDII Question EmptyMon Apr 15, 2024 9:51 am by Raymond-P

» LT1 Spark Plug make and model
ECM OBDII Question EmptyFri Apr 12, 2024 3:07 pm by Rob44

» 928 5-speed kit
ECM OBDII Question EmptyWed Apr 10, 2024 10:09 pm by LS982

April 2024
MonTueWedThuFriSatSun
1234567
891011121314
15161718192021
22232425262728
2930     

Calendar Calendar

Log in

I forgot my password

ECM OBDII Question

2 posters

944Hybrids: 924/944/968 and 928 V8 Conversions :: 944 Conversions :: LS1 Conversions

Go down

ECM OBDII Question Empty ECM OBDII Question

Post  Bluemach1 Wed Nov 11, 2009 5:25 pm

I am a little perplexed about something. After reading through several sites and Gregs manual I still dont know where the OBDII connector gets integrated into the electrical system. This must be very obvious becasue I have not seen this asked anywhere else.

Please enlighten me. Embarassed

Bluemach1

Posts : 437
Join date : 2009-08-18
Location : Cameron Park, CA

http://www.cardomain.com/ride/3378613

Back to top Go down

ECM OBDII Question Empty Re: ECM OBDII Question

Post  gt1scca Wed Nov 11, 2009 8:04 pm

*It's in there, page 103, under the "cheesy" fan schematic... Razz

SO, from LT1swap.com...

OBD2 DIAGNOSTIC PORT WIRING

[You must be registered and logged in to see this image.]

All OBD2 ports for LS1, Vortec Truck are the same.

Pin 2 - Serial Data - FROM the PCM.
Pin 4 & 5 - GROUND - Usually only pin 5 is needed, however some scan tools/code readers will need GROUND on pin 4 as well.
Pin 16 - 12v+ BATTERY - Power from 12v+ Battery source.

OBD2 LT1, 96-97 will have additional wiring to OBD2 port.

Pin 6 - Diagnostic Request/Field Output Enable
Pin 9 - UART Serial Data
NOTE: 1995 LT1 used an OBD2 port, but were not OBD2 vehicles. These did not have a Serial Data on Pin 2. These used pin 9.
EDIT: None of the ALDL / DLC wiring is connected to the 944 wiring...
all connections either come from the PCM or ground.

gt1scca

Posts : 795
Join date : 2009-06-08
Age : 55
Location : Belton, SC

Back to top Go down

ECM OBDII Question Empty Re: ECM OBDII Question

Post  gt1scca Wed Nov 11, 2009 8:27 pm

Oh, forgot about the check engine light, but...
it (an aftermarket light assembly) can be added anywhere and connected to -

PCM pin 9 PLUG D / BLUE on LT1
PLUG C2 / RED [pin 46] on LSX.

gt1scca

Posts : 795
Join date : 2009-06-08
Age : 55
Location : Belton, SC

Back to top Go down

Back to top

944Hybrids: 924/944/968 and 928 V8 Conversions :: 944 Conversions :: LS1 Conversions

 
Permissions in this forum:
You cannot reply to topics in this forum