# need ecu pinout **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [August 22, 2007, 1:39pm UTC](https://forums.speedlife.net/t/need-ecu-pinout/34267 "2007-08-22T13:39:58Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![AShort](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ashort/32/4947_2.png) [@AShort](https://forums.speedlife.net/u/AShort)\ **Post date:** [August 22, 2007, 1:39pm UTC](https://forums.speedlife.net/t/need-ecu-pinout/34267/1 "2007-08-22T13:39:58Z")
can anyone get me a diagram of a 92-93 integra? i need to know which wire goes where. i bought the haynes manual but it doesnt say what connector and pin each wire goes to. thanks. -Anthony ---
**Author:** ![sureshot007](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sureshot007/32/7345_2.png) [@sureshot007](https://forums.speedlife.net/u/sureshot007)\ **Post date:** [August 22, 2007, 1:42pm UTC](https://forums.speedlife.net/t/need-ecu-pinout/34267/2 "2007-08-22T13:42:07Z")
try this - it’s not perfect, but it’s closer than where you are [http://www.ff-squad.com/tech/wiring/obd1.ecu-pinout.zip](http://www.ff-squad.com/tech/wiring/obd1.ecu-pinout.zip) ---
**Author:** ![Shrek](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/shrek/32/7364_2.png) [@Shrek](https://forums.speedlife.net/u/Shrek)\ **Post date:** [August 22, 2007, 1:46pm UTC](https://forums.speedlife.net/t/need-ecu-pinout/34267/3 "2007-08-22T13:46:01Z")
![http://i197.photobucket.com/albums/aa271/shrekb18/wiring.9295.jpg?t=1187815161](http://i197.photobucket.com/albums/aa271/shrekb18/wiring.9295.jpg?t=1187815161) KEY: (Wire color), (Function/Description (if need be)), (Voltage Value (DC Volts Unless otherwise specified) V = Volts Wht = White Blk = Black Grn = Green Yel = Yellow Brn = Brown Blu = Blue Org = Orange KOEO = Key on; Engine OFF KOER = Key on; Engine Running OBD1 A1-INJ1 INJ1 Brown, Battery Voltage with KOEO A2-INJ4 INJ4 Yellow, Battery Voltage with KOEO A3-INJ2 INJ2 Red, Battery Voltage with KOEO A4-VTS VTEC solenoid GRN/YEL, N/a A5-INJ3 INJ3 Blue, Battery Voltage with KOEO A6-PO2SHTC O2 sensor (heating element) Org/Wht, Battery Voltage with KOEO A7-FLR1 fuel pump Grn/BLK, Battery Voltage with KOEO A8-empty A7 and A8 have the same circurt, so they can be the same A9-IACV IAC valve Blk/Blu, About 10v KOEO on Warm engine A10-empty A11- This is EGR Control Solenoid Valve (if the ECU has) Red, N/A A12-FANC engine coolant temp switch Blu/red, N/A A13-MIL MIL (check engine light) Blu/wht, N/A A14-empty A15-ACC (a/c compressor clutch) Red/Blu, N/A A16-ALT C alternator Wht/Grn, N/A A17-IAB IAB Solenoid Pink, N/A A18- Org/Red, Transmission Control Module (A/T), N/A A19- White, Intake control solenoid, Battery Voltage with KOEO A20-PCS EVAP purge control solenoid Red/Grn, N/a A21-ICM ICM Yel/Grn, Ignition Control Module (ICM) Output signal, About 10V KOEO A22- _per Sander_ Ignitor same as A21 A23-PG1 ground Black, Power ground, less than 1V A24-PG2 ground same as A23 A25-IGP2 to main relay and to gound for o Yel/blk, Battery positive from Main relay, Battery Voltage with KOEO A26-LG1 gound Blk/red, less than 1V B1-IGP2 to pin A25 Yel/Blk, Battery positive from Main relay, Battery Voltage with KOEO B2-LG2 ground to shields for CYP & TDC Brown/Blk, Less than 1V B3- Orange, upshift/downshift comparative input, N/A B4- Pink, upshift/downshift comparative input, N/A B5-ACS a/c switch Blu/Blk, A/c input, About 5V with KOEO & A/C off; less than 1V KOER with A/C & blower on B6-empty B7- Light green, Park/Neutral switch (A/T), Less than 1V in Park or Neutral with KOEO; 5V in Park or neutral with KOER; Battery voltage in all other positions B8-PSPSW PSP switch Red/Green, Power steering oil pressure switch, 0V KOEO; Battery Voltage KOER While slowly turning steering wheel B9-STARTER SIGNAL starter signal Blue/red, Battery Voltage in the START position (clutch depressed on M/T models) B10-VSS vehicle speed sensor Orange, Pulses 0-12V while turning the left front wheel B11-CYP P CYP -P Orange, CYP sensor input, N/A B12-CYP M CYP -M White, CYP sensor signal, N/A B13-TDC P TDC -P Org/Blue, TDC sensor input, N/A B14-TDC M TDC -M Wht/Blue, TDC sensor signal, N/A B15-CKP P CKP -P Blu/Green, CKP Sensor input, N/A B16-CKP M CKP -M Blu/yel, CKP Sensor signal, N/A D1-VBU Back Up Power Wht/Yel, Battery positive From battery through Fuse Box, Battery Voltage at ALL times D2-BKSW brake switch Grn/wht, Battery voltage at all times D3-KS Knock Sensor Red/Blue, N/A D4-SCS service check connector Brown/Wht, About 5V (M/T); About 11V (A/T) D5-empty D6-VTM VTEC pressure switch Light Blue, N/A D7-TXD/RXD (data link connector) Light Green/Red, N/A D8-empty D9-ALT F alternator Wht/Red, Alternator Charging Signal, About 4.5V KOEO; Decreases under Electrical load (Headlights & rear defogger on) At warm idle D10-ELD electric load detector input Grn/Blk, N/A D11-TPS TPS Signal Red/Blk, About 0.5V KOEO with throttle fully closed; About 4.5V KOEO with throttle fully open D12- Wht/Blk, EGR Valve Lift sensor, About 1.2V KOEO D13-ECT ECT sensor input Yel/Blu, About 5V KOEO (varies with temperature) D14-PHO2S O2 sensor White, heated 02 sensor Signal, 0.4-0.5V when ignition is turned on; drops to less than 0.1V within 2 minutes D15-IAT IAT sensor Red/Yel, Intake Air Temperature signal, .05-4.5V KOEO(Varies with temperature) D16-VREF VREF shows BLANK on my diagram D17-MAP Map Signal Wht/Blu, About 3V KOEO (Varies with Temperature) D18- Light Green/Blk, Transmission Control Module (A/T Only), N/A D19 - Red/Wht, Reference Voltage, About 5V KOEO D20 - Yel/Wht, Reference Voltage, About 5V KOEO D21 - Blue/Wht, Sensor ground, Less than 1V D22 - Green/Wht, Sensor ground, Less than 1V [http://www.honda-tech.com/zerothread/1998336](http://www.honda-tech.com/zerothread/1998336)