Gen3/Gen2 3sgte ECU pin outs

JDMsw20 · 04-14-2005, 11:54 PM

GEN3 3S-GTE PLUG ID

BA-1/EA-3(Engine Relay/Fuse Box 18 pin)
Loc. ID Color ’91 Gen2
18-1 TC on check connector White Same
18-2 TS on check connector Yellow Same
18-3 Intake Manifold Ground Wht/Blk Same
18-4 Alternator L Terminal Yellow Same
18-5 Igniter Black Same
18-6 Water Temp Sensor Yel/Grn Same
18-7 Oil Pressure Switch Yel/Blk Same
18-8 Ignition Switch Red Same
18-9 Not Used Brn/Blk A/C VSV
18-10 Not Used Yel/Blu A/C VSV
18-11 Not Used Red Oil Level Sensor
18-12 Not Used Red/Yel AB on Check Connector
18-13 Back-Up Light Switch Red/Blk Same
18-14 Air box Temp Sensor Brown Not Used
18-15 Not Used Not Used
18-16 A/C Magnetic Clutch Blk/Wht Same
18-17 Alternator S Terminal Wht/Red Same
18-18 Not Used- Pink Cruise Control ECU
Need to connect to 16-12 on engine ECU for gen3

AB-1/EA-1(Trunk Body Harness 15 pin)
Loc. ID Color ‘91 Gen2
16-1 Tranny Speed Signal Brn Not Used (Mech. Speedo)
16-2 Not Used Grn/Red Circuit Opening Rly to ECU 26-17
Need to connect wire from gen2 to engine ECU 22-14 for gen3
16-3 Eng Comp Temp Sensor Blu/Org Same/To Cooling Fan ECU #6
16-4 Eng Comp Temp Sensor Blue Same/To Cooling Fan ECU #5
16-5 Dash Warning Light Blu/Yel Same/To Cooling Fan ECU #2
16-6 Not Used Not Used
16-7 Not Used Wht/Blk Starter Relay #3
16-8 Engine Hood Switch Red/Grn Same (TDS)
16-9 Cat EGT Pink Not Used
Need to connect to engine ECU 22-16 for gen3
16-10 Tranny Speed Sensor Vio/Wht Same/To Cruise Control ECU
16-11 Dash Boost Gauge/PIM Blu/Blk Same/From TPS
16-12 F/P Check Connector Blu/Blk Same
16-13 F/P Relay Blu/Red Not Used
Need to remove wire engine ECU 22-6 from gen2 harness and connect here for gen3
16-14 Not Used Not Used
16-15 Check Engine Light? Grn/Wht Not Used
No connection

Plus Pat's write up !

Gen3 vs Gen2 harness comparison
http://www.mrtwo.net/mr2modproject/g...n3harness1.htm

Gen3 wiring diagrams & misc info:

http://www.mrtwo.net/mr2modproject/mr2modproject.htm

Ncturnal · 04-15-2005, 12:04 AM

Awesome. Thanks.

mr2man · 01-16-2006, 11:48 AM

Anyone have the pinout from a 93+ USA SW20? I am trying to find out the differences between the 91-92 & the 93-95.

docneon · 04-27-2006, 07:05 AM

I adapted JDMsw20's Pinout to show 1993 USDM. There is an error in the BGB that I noted. Hope this helps.

phoenixr2 · 07-27-2006, 03:07 PM

docneon- in response to your note on the bottom. Yes turbo models were available with out EHPS, they are more rare but I have owned a few, and no they were not converted.

MR2SW22 · 01-03-2008, 03:09 PM

I have a 91t, and there is a wire that is tapped into, according to the chart it's a SPD wire, what does that control? i'm guessing speed sensor? maybe stock speed fuel cut?

94st3sgte · 04-06-2008, 09:58 PM

exaclty how do i read that, like with the numbrs for example 16-10, i am confused, i am trying to find the pip of speedo signal from the trans, how do i read the pin outs by number and match them???

mopwer · 07-20-2008, 09:51 AM

Got a question too. I have a USDM 93 T and need a new engine wiring harness. I found a guy that has a SW20 90-93 JDM harness. Will it swap right over or do I need to change something. Thanks.

Greg

Jazzykova · 08-17-2008, 04:58 AM

hey guys I bought a jdm motor(no engine/body harness& ecu) and was told that it was a 93 3sgte, but I discovered that the valve cover did not match a jdm93. It was a jdm 91-92 motor. I had bought a 91t engine/body harness and also a jdm 93 ecu before I had the motor. I already did my swap but I didn't wire up the engine harness yet. I haven't repinned anything either. what would I need to do to get my car to run properly and what kind of issues would I most likely to encounter?

04-14-2005, 11:54 PM	#1 (permalink)
JDMsw20 Beams Owners Group Join Date: Mar 2005 Location: G-LTDMR2, NY Posts: 141 Thanks: 6 Thanked 9 Times in 6 Posts iTrader Rating: (0/0% )	Gen3/Gen2 3sgte ECU pin outs GEN3 3S-GTE PLUG ID BA-1/EA-3(Engine Relay/Fuse Box 18 pin) Loc. ID Color ’91 Gen2 18-1 TC on check connector White Same 18-2 TS on check connector Yellow Same 18-3 Intake Manifold Ground Wht/Blk Same 18-4 Alternator L Terminal Yellow Same 18-5 Igniter Black Same 18-6 Water Temp Sensor Yel/Grn Same 18-7 Oil Pressure Switch Yel/Blk Same 18-8 Ignition Switch Red Same 18-9 Not Used Brn/Blk A/C VSV 18-10 Not Used Yel/Blu A/C VSV 18-11 Not Used Red Oil Level Sensor 18-12 Not Used Red/Yel AB on Check Connector 18-13 Back-Up Light Switch Red/Blk Same 18-14 Air box Temp Sensor Brown Not Used 18-15 Not Used Not Used 18-16 A/C Magnetic Clutch Blk/Wht Same 18-17 Alternator S Terminal Wht/Red Same 18-18 Not Used- Pink Cruise Control ECU Need to connect to 16-12 on engine ECU for gen3 AB-1/EA-1(Trunk Body Harness 15 pin) Loc. ID Color ‘91 Gen2 16-1 Tranny Speed Signal Brn Not Used (Mech. Speedo) 16-2 Not Used Grn/Red Circuit Opening Rly to ECU 26-17 Need to connect wire from gen2 to engine ECU 22-14 for gen3 16-3 Eng Comp Temp Sensor Blu/Org Same/To Cooling Fan ECU #6 16-4 Eng Comp Temp Sensor Blue Same/To Cooling Fan ECU #5 16-5 Dash Warning Light Blu/Yel Same/To Cooling Fan ECU #2 16-6 Not Used Not Used 16-7 Not Used Wht/Blk Starter Relay #3 16-8 Engine Hood Switch Red/Grn Same (TDS) 16-9 Cat EGT Pink Not Used Need to connect to engine ECU 22-16 for gen3 16-10 Tranny Speed Sensor Vio/Wht Same/To Cruise Control ECU 16-11 Dash Boost Gauge/PIM Blu/Blk Same/From TPS 16-12 F/P Check Connector Blu/Blk Same 16-13 F/P Relay Blu/Red Not Used Need to remove wire engine ECU 22-6 from gen2 harness and connect here for gen3 16-14 Not Used Not Used 16-15 Check Engine Light? Grn/Wht Not Used No connection Plus Pat's write up ! Gen3 vs Gen2 harness comparison http://www.mrtwo.net/mr2modproject/g...n3harness1.htm Gen3 wiring diagrams & misc info: http://www.mrtwo.net/mr2modproject/mr2modproject.htm

04-15-2005, 12:04 AM	#2 (permalink)
Ncturnal Google Ron Paul Join Date: Feb 2005 Location: Atlanta, GA Posts: 7,012 Thanks: 93 Thanked 126 Times in 106 Posts Blog Entries: 7 My Google Map iTrader Rating: (33/100% )	Awesome. Thanks. __________________ Brian - My MR2Trader Ads - Click here for order or shipping status if you've bought something from me recently. Technical Questions - Please post them on the forums. Others who may have the same problem don't benefit from a PM exchange. If you wish to have my input I have no problem with a PM containing a link to a thread you have already posted.

04-27-2006, 07:05 AM	#4 (permalink)
docneon former 2 owner :( Join Date: Apr 2006 Location: Round 'bout Chicago Posts: 287 Thanks: 2 Thanked 2 Times in 2 Posts iTrader Rating: (2/100% )	1993 USDM Pinout I adapted JDMsw20's Pinout to show 1993 USDM. There is an error in the BGB that I noted. Hope this helps. Last edited by docneon; 04-27-2006 at 07:32 AM. Reason: corrected my error on pinout

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01-16-2006, 11:48 AM	#3 (permalink)
mr2man E85 Beast Join Date: Jan 2006 Location: South Dakota Posts: 66 Thanks: 3 Thanked 0 Times in 0 Posts My Google Map iTrader Rating: (1/100% )	Anyone have the pinout from a 93+ USA SW20? I am trying to find out the differences between the 91-92 & the 93-95.

07-27-2006, 03:07 PM	#5 (permalink)
phoenixr2 No Skills Join Date: Feb 2005 Location: Phoenix SPL Posts: 58 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	docneon- in response to your note on the bottom. Yes turbo models were available with out EHPS, they are more rare but I have owned a few, and no they were not converted.

01-03-2008, 03:09 PM	#6 (permalink)
MR2SW22 Just add water! Join Date: Aug 2007 Location: Diamond Bar, CA Posts: 1,750 Thanks: 47 Thanked 25 Times in 24 Posts iTrader Rating: (6/100% )	I have a 91t, and there is a wire that is tapped into, according to the chart it's a SPD wire, what does that control? i'm guessing speed sensor? maybe stock speed fuel cut?

04-06-2008, 09:58 PM	#7 (permalink)
94st3sgte Cage Fighter Join Date: Sep 2007 Location: Farmington, MI Posts: 347 Thanks: 1 Thanked 2 Times in 2 Posts iTrader Rating: (2/100% )	exaclty how do i read that, like with the numbrs for example 16-10, i am confused, i am trying to find the pip of speedo signal from the trans, how do i read the pin outs by number and match them???

07-20-2008, 09:51 AM	#8 (permalink)
mopwer 933SGTE Join Date: Nov 2006 Location: Peoria, AZ Posts: 1,098 Thanks: 24 Thanked 13 Times in 13 Posts My Google Map iTrader Rating: (12/100% )	Got a question too. I have a USDM 93 T and need a new engine wiring harness. I found a guy that has a SW20 90-93 JDM harness. Will it swap right over or do I need to change something. Thanks. Greg

08-17-2008, 04:58 AM	#9 (permalink)
Jazzykova Some Skills Join Date: Mar 2008 Posts: 80 Thanks: 0 Thanked 1 Time in 1 Post iTrader Rating: (3/100% )	hey guys I bought a jdm motor(no engine/body harness& ecu) and was told that it was a 93 3sgte, but I discovered that the valve cover did not match a jdm93. It was a jdm 91-92 motor. I had bought a 91t engine/body harness and also a jdm 93 ecu before I had the motor. I already did my swap but I didn't wire up the engine harness yet. I haven't repinned anything either. what would I need to do to get my car to run properly and what kind of issues would I most likely to encounter?