MR2 Technical Knowledgebase - 3S-GTE ECU Pinouts (All generations)

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Created	2007-08-15	Views	4696
Modified	2007-08-16	Id	2
Author	Tech KB

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The following diagram contains pinouts for the following 3S-GTE engine configurations:

JDM SW20 GEN 3 1994-1998
JDM ST205 GEN 3 1994-1998
JDM SW20 GEN 2 1993
JDM ST185 GEN 2 1993
USDM SW20 GEN 2 1991

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

Comments (View All Comments / Add Comment)

ecu pinout

do you have the pin out for 03 caldina GT-4 ECU 3sgte.

I cannot find it anywhere please help if you can.

regards,
Mark
Mark Lawson [2009-02-26]

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