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.
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

Similar topics
    Latest topics
    » 85 5.3 swap
    LS3 Harness pin outs EmptyYesterday at 4:15 pm by smkn951

    » low cost and available bellhousing...maybe
    LS3 Harness pin outs EmptyYesterday at 2:16 pm by Admin

    » Starter issues
    LS3 Harness pin outs EmptySun Oct 18, 2020 12:48 pm by zeusrotty

    » Sharkey's 944 corvette t56 swap thread
    LS3 Harness pin outs EmptyTue Oct 13, 2020 10:01 am by Myporschels

    » FS: 1987 951 LS
    LS3 Harness pin outs EmptyTue Oct 13, 2020 5:41 am by carr911

    » 5th gear options, Audi?
    LS3 Harness pin outs EmptyMon Oct 12, 2020 1:18 pm by acorad

    » Garage queens
    LS3 Harness pin outs EmptyMon Oct 12, 2020 11:57 am by gdopnt

    » Where did you find your LS1? I need one :)
    LS3 Harness pin outs EmptySun Oct 11, 2020 10:33 pm by smkn951

    » 78 928 LS1 swap initiated
    LS3 Harness pin outs EmptyThu Oct 08, 2020 12:21 pm by Hey_Allen

    » cv axles breaking
    LS3 Harness pin outs EmptyWed Oct 07, 2020 11:24 pm by Plucky948

    October 2020
    MonTueWedThuFriSatSun
       1234
    567891011
    12131415161718
    19202122232425
    262728293031 

    Calendar Calendar

    Log in

    I forgot my password

    LS3 Harness pin outs

    Go down

    LS3 Harness pin outs Empty LS3 Harness pin outs

    Post  944-LT1 on Thu Nov 19, 2009 9:24 pm

    Can anybody tell me (or crossout) the pins that need to be removed? 2009 LS3 harness

    X1 pinout (73 way):
    pin# wire color description
    1 OG/BK Park/Neutral Switch (MYC)
    2 -3 Not used
    4 PU/WH - Starter Relay coil supply voltage
    5-8 Not used
    9 WH Brake pedal switch signal
    10 PU/WH HO2S High Signal Bank 1 Sensor 2
    11 TN/WH HO2S Low Signal Bank 1 Sensor 2
    12 OG/BK A/C Refrigerant Pressure Sensor Signal
    13 BK/WH Low Reference
    14-15 Not used
    16 D-BU Fuel Level Sensor Signal
    17 Not Used
    18 YE Accessory voltage
    19 PK Ignition 1 Voltage
    20 RD/WH Battery Positive Voltage
    21-22 Not used
    23 PU Low Reference
    24 D-GN Fuel Tank Pressure Signal
    25 Not used
    26 D-BU Clutch pedal position sensor signal
    27 TN Hi Speed GMLAM Serial Data Bus-
    28 TN-BK Hi Speed GMLAM Serial Data Bus+
    29 D-BU Accelerator pedal position (APP) Sensor 1 Signal
    30 BN Low Reference
    31 TN Low Reference
    32 L-BU APP Sensor 2 Signal
    33 GY 5 volt Reference 1
    34 GY 5 volt Reference 1
    35 Not used
    36 TN 5 volt Reference 1
    37 TN Intake air temperature (IAT) sensor signal
    38 TN Low Reference
    39-40 Not Used
    41 YE MAF Sensor Signal
    42 D-GN/WH Low reference
    43-46 Not Used
    47 PK Ignition 1 Voltage
    48 WH Engine speed signal
    49 TN HO2S Low Signal Bank 2 Sensor 2
    50 D-GN/WH Fuel Pump Relay Control
    51 Not used
    52 PU/WH Starter Enable Relay Control
    53 Not used
    54 D-GN Clutch position sensor control
    55 Not used
    56 WH/BK 5 volt Reference 2 (5V2)
    57 D-GN/WH VSS
    58 D-GN Low Speed Cooling Fan relay Control
    59 WH/BK Ignition 1 Relay control
    60 Not used
    61 WH EVAP Canister Vent Solenoid Control
    62 Not used
    63 D-GN/WH A/C Compressor Clutch Relay Control
    64 OG/WH HO2S Heater Low Control Bank 2 Sensor 2
    65 BN HO2S Heater Low Control Bank 1 Sensor 2
    66 GY Skip/Shift Solenoid Control (M10)
    67 Not used
    68 BN/WH MIL Control Malfunction indicator Lamp control
    69 PU HO2S High Signal Bank 2 Sensor 2
    70 L-BU Fuel Level Sensor Signal-Secondary
    71 YE VSS Signal High (M10)
    72 PU VSS Signal Low (M10)
    73 BK/WH Ground

    X2 pinout (80 way):
    pin# wire color description
    1 Not used
    2 L-GN 5 Volt Reference 2
    3 L-BU/BK 5V2
    4 Not used
    5 BN TAC (throttle Actuator Control) Motor Control -2
    6 YE TAC Motor Control -1
    7 Not used
    8 D-GN/WH EVAP Canister Purge Solenoid Control
    9-10 Not used
    11 L-GN Reverse Lockout Solenoid Control
    12 GY/WH HO2S Heater Low Control Bank 1 Sensor 1
    13 L-GN HO2S Heater Low Control Bank 2 Sensor 1
    14-16 Not used
    17 D-BU/WH Fuel Injector 8 Control
    18 TN/WH Fuel Injector 5 Control
    19 YE/BK Fuel Injector 6 Control
    20 TN Fuel Injector 1 Control
    21 YE Engine Coolant Temp Sensor Signal
    22 TN Low Reference
    23 TN/WH Transmission Fluid Temp Sensor Signal (M10)
    24 OG/BK Low Refernce (M10)
    25 Not used
    26 D-BU Knock Sensor (KS) 1 Signal
    27 GY Knock Sensor (KS) 1 Signal
    28 Not used
    29 L-BU Knock Sensor (KS) 2 Signal
    30 GY Knock Sensor (KS) 2 Signal
    31 Not used
    32 GY Generator Field Duty Cycle Signal
    33 BN Oil pressure Switch Signal
    34 BK Low Reference
    35 TN/WH Low Reference
    36 Not used
    37 L-GN/BK Fuel Injector 2 Control
    38 PK/BK Fuel Injector 3 Control
    39 L-BU/BK Fuel Injector 4 Control
    40 OG/BK Fuel Injector 7 Control
    41 GY 5 Volt Referencve 1
    42 Not used
    43 GY 5 Volt Referencve 1 LS3 or LS7
    44 OG 5V1
    45-49 Not used
    50 TN/Wh Oil Pressure Sensor Signal
    51-52 Not used
    53 OG/BK Low Reference LS3 or LS7
    54-55 Not used
    56 TN HO2S Low Signal- Bank 1 Sensor 1
    57 PU/WH HO2S High Signal- Bank 1 Sensor 1
    58 L-GN MAP Sensor Signal
    59 PU HO2S High Signal- Bank 2 Sensor 1
    60 TN HO2S Low Signal- Bank 2 Sensor 1
    61 OG Generator Turn On Signal
    62 Not used
    63 PU Throttle position sensor 2 signal
    64 BN/WH Camshaft Position Signal (CMP)
    65 D-GN TP Sensor 1 Signal
    66 PK/BK Low Reference
    67 Not used
    68 D-BU/WH Crankshaft Position Sensor Signal
    69 YE/BK Low Reference
    70 PU IC 1 Control
    71 PU/WH IC 8 Control
    72 OG IC 7 Control
    73 OG/WH IC 2 Control
    74 L-BU/WH IC 6 Control
    75 D-GN IC 5 Control
    76 D-GN/WH IC 4 Control
    77 L-BU IC 3 Control
    78 BN Low Reference
    79 BN/WH Low Reference
    80 Not used

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

    [You must be registered and logged in to see this link.]
    944-LT1
    944-LT1
    Moderator
    Moderator

    Posts : 1263
    Join date : 2009-06-09
    Age : 98
    Location : NOTRE DAME

    Back to top Go down

    LS3 Harness pin outs Empty Re: LS3 Harness pin outs

    Post  gt1scca on Sun Nov 22, 2009 2:23 pm

    2009 LS3 Wiring Harness

    X1 pinout (73 way):

    pin# / wire / color / description
    1 OG/BK Park/Neutral Switch (MYC) / To ground
    2 -3 Not used
    4 PU/WH - Starter Relay coil supply voltage
    5-8 Not used
    9 WH Brake pedal switch signal
    10 PU/WH HO2S High Signal Bank 1 Sensor 2
    11 TN/WH HO2S Low Signal Bank 1 Sensor 2

    12 OG/BK A/C Refrigerant Pressure Sensor Signal
    13 BK/WH Low Reference
    14-15 Not used
    16 D-BU Fuel Level Sensor Signal / Unsure, for emissions?
    17 Not Used
    18 YE Accessory voltage
    19 PK Ignition 1 Voltage
    20 RD/WH Battery Positive Voltage
    21-22 Not used
    23 PU Low Reference
    24 D-GN Fuel Tank Pressure Signal / emissions?
    25 Not used
    26 D-BU Clutch pedal position sensor signal / Traction Control?
    27 TN Hi Speed GMLAM Serial Data Bus- / to ALDL
    28 TN-BK Hi Speed GMLAM Serial Data Bus+ / to ALDL
    29 D-BU Accelerator pedal position (APP) Sensor 1 Signal / DBW Throttle Body
    30 BN Low Reference
    31 TN Low Reference
    32 L-BU APP Sensor 2 Signal / DBW Throttle Body
    33 GY 5 volt Reference 1
    34 GY 5 volt Reference 1
    35 Not used
    36 TN 5 volt Reference 1
    37 TN Intake air temperature (IAT) sensor signal
    38 TN Low Reference
    39-40 Not Used
    41 YE MAF Sensor Signal / Mass AirFlow Sensor
    42 D-GN/WH Low reference
    43-46 Not Used
    47 PK Ignition 1 Voltage
    48 WH Engine speed signal / Tachometer
    49 TN HO2S Low Signal Bank 2 Sensor 2 / Rear O2
    50 D-GN/WH Fuel Pump Relay Control
    51 Not used
    52 PU/WH Starter Enable Relay Control
    53 Not used
    54 D-GN Clutch position sensor control
    55 Not used
    56 WH/BK 5 volt Reference 2 (5V2)
    57 D-GN/WH VSS / To VSS Pickup
    58 D-GN Low Speed Cooling Fan relay Control
    59 WH/BK Ignition 1 Relay control
    60 Not used
    61 WH EVAP Canister Vent Solenoid Control / emissions
    62 Not used
    63 D-GN/WH A/C Compressor Clutch Relay Control
    64 OG/WH HO2S Heater Low Control Bank 2 Sensor 2 / Rear O2
    65 BN HO2S Heater Low Control Bank 1 Sensor 2 / Front O2
    66 GY Skip/Shift Solenoid Control (M10) / auto trans...
    67 Not used
    68 BN/WH MIL Control Malfunction indicator Lamp control / Service Engine Light
    69 PU HO2S High Signal Bank 2 Sensor 2 / Rear O2 / Rear O2
    70 L-BU Fuel Level Sensor Signal-Secondary / emissions?
    71 YE VSS Signal High (M10) / To VSS Pickup
    72 PU VSS Signal Low (M10)
    73 BK/WH Ground / Chassis ground

    X2 pinout (80 way):

    pin# / wire / color / description
    1 Not used
    2 L-GN 5 Volt Reference 2
    3 L-BU/BK 5V2
    4 Not used
    5 BN TAC (throttle Actuator Control) Motor Control -2 / DBW
    6 YE TAC Motor Control -1 / DBW
    7 Not used
    8 D-GN/WH EVAP Canister Purge Solenoid Control / emissions
    9-10 Not used
    11 L-GN Reverse Lockout Solenoid Control / auto trans OR T56
    12 GY/WH HO2S Heater Low Control Bank 1 Sensor 1 / Front O2
    13 L-GN HO2S Heater Low Control Bank 2 Sensor 1 / Rear O2
    14-16 Not used
    17 D-BU/WH Fuel Injector 8 Control
    18 TN/WH Fuel Injector 5 Control
    19 YE/BK Fuel Injector 6 Control
    20 TN Fuel Injector 1 Control
    21 YE Engine Coolant Temp Sensor Signal
    22 TN Low Reference
    23 TN/WH Transmission Fluid Temp Sensor Signal (M10) / auto trans...
    24 OG/BK Low Reference (M10)
    25 Not used
    26 D-BU Knock Sensor (KS) 1 Signal
    27 GY Knock Sensor (KS) 1 Signal
    28 Not used
    29 L-BU Knock Sensor (KS) 2 Signal
    30 GY Knock Sensor (KS) 2 Signal
    31 Not used
    32 GY Generator Field Duty Cycle Signal
    33 BN Oil pressure Switch Signal
    34 BK Low Reference
    35 TN/WH Low Reference
    36 Not used
    37 L-GN/BK Fuel Injector 2 Control
    38 PK/BK Fuel Injector 3 Control
    39 L-BU/BK Fuel Injector 4 Control
    40 OG/BK Fuel Injector 7 Control
    41 GY 5 Volt Reference 1
    42 Not used
    43 GY 5 Volt Reference 1 LS3 or LS7
    44 OG 5V1
    45-49 Not used
    50 TN/Wh Oil Pressure Sensor Signal
    51-52 Not used
    53 OG/BK Low Reference LS3 or LS7
    54-55 Not used
    56 TN HO2S Low Signal- Bank 1 Sensor 1 / Front O2
    57 PU/WH HO2S High Signal- Bank 1 Sensor 1 / Front O2
    58 L-GN MAP Sensor Signal
    59 PU HO2S High Signal- Bank 2 Sensor 1 / Rear O2
    60 TN HO2S Low Signal- Bank 2 Sensor 1 / Rear O2
    61 OG Generator Turn On Signal / Alternator
    62 Not used
    63 PU Throttle position sensor 2 signal
    64 BN/WH Camshaft Position Signal (CMP)
    65 D-GN TP Sensor 1 Signal
    66 PK/BK Low Reference
    67 Not used
    68 D-BU/WH Crankshaft Position Sensor Signal
    69 YE/BK Low Reference
    70 PU IC 1 Control
    71 PU/WH IC 8 Control
    72 OG IC 7 Control
    73 OG/WH IC 2 Control
    74 L-BU/WH IC 6 Control
    75 D-GN IC 5 Control
    76 D-GN/WH IC 4 Control
    77 L-BU IC 3 Control
    78 BN Low Reference
    79 BN/WH Low Reference
    80 Not used

    I'm not sure about #16 D-BU Fuel Level Sensor Signal & 24 D-GN Fuel Tank Pressure Signal, but everything else in BOLD can be removed. The 5V reference is needed for sensors, and (just as on the LT) 2 of the O2 sensors may be programmed out.

    EAP / POC

    gt1scca

    Posts : 795
    Join date : 2009-06-08
    Age : 52
    Location : Belton, SC

    Back to top Go down

    LS3 Harness pin outs Empty Re: LS3 Harness pin outs

    Post  944-LT1 on Sun Nov 22, 2009 9:59 pm

    Thanks Greg!

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

    [You must be registered and logged in to see this link.]
    944-LT1
    944-LT1
    Moderator
    Moderator

    Posts : 1263
    Join date : 2009-06-09
    Age : 98
    Location : NOTRE DAME

    Back to top Go down

    LS3 Harness pin outs Empty Re: LS3 Harness pin outs

    Post  gt1scca on Mon Nov 23, 2009 5:24 am

    No Prob...

    1 OG/BK Park/Neutral Switch (MYC) / To ground

    Just making sure you got the notes @ the end...
    Don't remove this just because it's BOLD...
    It needs to remain, but be connected to ground.

    OCD, maybe...but without a ground, She won't get crunk.

    pig Razz rendeer

    gt1scca

    Posts : 795
    Join date : 2009-06-08
    Age : 52
    Location : Belton, SC

    Back to top Go down

    LS3 Harness pin outs Empty Re: LS3 Harness pin outs

    Post  944-LT1 on Mon Nov 23, 2009 10:16 am

    Okay. I took that wire out already but I didnt cut a single wire. I used tweezers to take out each pin not needed. So I can easily put that wire back in and ground it.

    1 OG/BK Park/Neutral Switch (MYC) / To ground

    Now you mean ground JUST that wire only and not ALL bold wires. Right? Laughing WHAT DOES MYC stand for? Multi year something?

    Also, I believe I keep the front O2 sensors and remove the rears? You have it the other way around. Banks 1&2 sensor 1's are front and Banks 1&2 sensor 2's are rears? So, I removed the rears. Just based on the quick google search and logic in that the computer wants to see fuel ratio's straight away and not so much after a catalytic. Question Question Question

    This is my first time doing this as my LT harness was done by RH via vendor. Arrow

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

    [You must be registered and logged in to see this link.]
    944-LT1
    944-LT1
    Moderator
    Moderator

    Posts : 1263
    Join date : 2009-06-09
    Age : 98
    Location : NOTRE DAME

    Back to top Go down

    LS3 Harness pin outs Empty Re: LS3 Harness pin outs

    Post  944-LT1 on Mon Nov 23, 2009 10:24 am

    BTW, if it works now, modding a harness is easy! Cool

    I found the wires for the drive by wire easily and the ALDL port. Im missing one wire for the ALDL port... "Pin 2 Class 2 Serial Data"

    Theres only 6 wires that go to the ALDL port:
    Pin 2 PU Class 2 Serial Data (missing)
    Pin 4 BK Ground
    Pin 5 BK/WH Ground
    Pin 6 TN/BK High speed GMLAN Serial Data Bus + (straight off X1)
    Pin 14 TN High speed GMLAN Serial Data Bus - (straight off X1 as well)
    Pin 16 RD/WH Battery Positive Voltage

    Very simple stuff. Razz

    I now need to order the ALDL connector GM PN# 12110250, the DBW connector GM PN# 15326830 and a fuse/relay center PN#????

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

    [You must be registered and logged in to see this link.]
    944-LT1
    944-LT1
    Moderator
    Moderator

    Posts : 1263
    Join date : 2009-06-09
    Age : 98
    Location : NOTRE DAME

    Back to top Go down

    LS3 Harness pin outs Empty Re: LS3 Harness pin outs

    Post  gt1scca on Mon Nov 23, 2009 1:17 pm

    944-LT1 wrote:Now you mean ground JUST that wire only and not ALL bold wires. Right?
    Only that wire...Not sure what (MYC) is...
    The neutral switch grounds the reference voltage when starting.

    As far as easy...
    "EAP / POC" = Easy as Pie / Piece of Cake Razz
    Time consuming, slightly...

    Front O2s are correct...
    (160+ lines in this text box gets crowded...) tongue

    Fuse / Relay Block:
    AUTOZONE can order you the fuse block, with terminals for $5.00, part# is (Dorman) 85668.

    OBD2 DIAGNOSTIC PORT WIRING
    Pin 2 Missing? Even @ the PCM plug?

    gt1scca

    Posts : 795
    Join date : 2009-06-08
    Age : 52
    Location : Belton, SC

    Back to top Go down

    LS3 Harness pin outs Empty Re: LS3 Harness pin outs

    Post  944-LT1 on Mon Nov 23, 2009 2:57 pm

    Fuse / Relay Block:
    AUTOZONE can order you the fuse block, with terminals for $5.00, part# is (Dorman) 85668.

    Awesome! Cool

    OBD2 DIAGNOSTIC PORT WIRING
    Pin 2 Missing? Even @ the PCM plug?

    I dont have a diagnostic port yet. I have 5 of 6 of the wires needed to hook one up from the ECM but am missing the wire that would go to pin 2 of the diagnostic port. Im guessing the missing wire comes from the BCM or someother computer in the car and gives diagnostics on things like suspension or whatever not related to the engine. Im thinking its not needed. Suspect

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

    [You must be registered and logged in to see this link.]
    944-LT1
    944-LT1
    Moderator
    Moderator

    Posts : 1263
    Join date : 2009-06-09
    Age : 98
    Location : NOTRE DAME

    Back to top Go down

    LS3 Harness pin outs Empty Re: LS3 Harness pin outs

    Post  944-LT1 on Mon Nov 23, 2009 3:12 pm

    Okay....I guess pin 2 does a bit more than I thought.
    [You must be registered and logged in to see this image.]
    [You must be registered and logged in to see this image.]

    This is why I cant find that wire.

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

    [You must be registered and logged in to see this link.]
    944-LT1
    944-LT1
    Moderator
    Moderator

    Posts : 1263
    Join date : 2009-06-09
    Age : 98
    Location : NOTRE DAME

    Back to top Go down

    LS3 Harness pin outs Empty Re: LS3 Harness pin outs

    Post  gt1scca on Mon Nov 23, 2009 5:57 pm

    When the LS3 wiring mod is hammered out, I'll make it a Manual Revision.

    Keep me posted...

    gt1scca

    Posts : 795
    Join date : 2009-06-08
    Age : 52
    Location : Belton, SC

    Back to top Go down

    LS3 Harness pin outs Empty Re: LS3 Harness pin outs

    Post  944-LT1 on Mon Nov 23, 2009 7:20 pm

    I think it already is. Ive scoured over the schematics and sites for something to tell me im wrong but all looks legit.

    but yeah, no good until it starts and runs.... Ill let you know!

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

    [You must be registered and logged in to see this link.]
    944-LT1
    944-LT1
    Moderator
    Moderator

    Posts : 1263
    Join date : 2009-06-09
    Age : 98
    Location : NOTRE DAME

    Back to top Go down

    LS3 Harness pin outs Empty Re: LS3 Harness pin outs

    Post  gt1scca on Mon Nov 23, 2009 8:40 pm

    944-LT1 wrote:I think it already is...
    Awesome!
    'Need to pinch that Fat Lady.

    Razz

    gt1scca

    Posts : 795
    Join date : 2009-06-08
    Age : 52
    Location : Belton, SC

    Back to top Go down

    Back to top

    - Similar topics

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