Rep Power: 0

<font size="2"><font face="Verdana"><strong><font size="4">2001-2003 Honda Civic ECU Wiring</font></strong><br /><br /><br /><strong>Connector A (31 Pins)</strong><br />1-blk/wht-Primary O2 sensor heater control<br />2-yel/blk-Power Source<br />3-yel/blk-Power source<br />4-blk-Power ground<br />5-blk-Power ground<br />6-wht-Primary O2 sensor <br />7-blu-Crankshaft position<br />8-yel-Sensor return volt<br />9-red/blu-Knock sensor<br />10-grn/yel-Sensor ground<br />11-grn/wht-Sensor ground<br />12-blk/red-Idle air control valve<br />13-wht/blk-EGR Valve position VTEC ONLY<br />14-blk/wht-Secondary O2 sensor heater control<br />15-red/blk-Throttle position sensor<br />18-wht/grn-Vehicle speed sensor<br />19-grn/red-MAP Sensor<br />20-yel/blu-Sensor Voltage Supply<br />21-yel/red-Sensor Voltage Supply<br />23-brn/yel-Logic ground<br />24-brn/yel-logic ground<br />25-wht/red-Secondary O2 Sensor <br />26-grn-Top dead center sensor<br />27-brn-Igniton coil 4<br />28-wht/blu-coil 3<br />29-blu/red-coil 2<br />30-yel/grn-coil 1<br /><br /><strong>Connector B (24 Pins)<br /></strong>2-yel-Fuel injector 4<br />3-blu-Injector 3<br />4-red-Injector 2<br />5-brn-Injector 1<br />6-grn-Radiator fan control<br />7-red/blk-A/T Pressure control solenoid valve A<br />8-red/wht-Engine Coolant sensor<br />9-blu/blk-VTEC Oil pressure switch VTEC ONLY<br />10-wht/blu-Alternator L Signal<br />13-wht/red-Alternator FR Signal<br />14-blu/red-EGR Valve VTEC ONLY<br />15-grn/yel-VTEC Solenoid valve<br />16-blk/red-A/T Pressure control solenoid valve B<br />17-red/yel-Intake air temp sensor<br />18-wht/grn-Alternator control<br />21-yel/blu-EVAP Canistor purge valve<br /><br /><br /><br /><strong><font size="3"><font size="2">Connector C (22 Pins)</font>– <font color="#ff0000">AUTO TRANSMISSION ONLY</font><br /></font></strong>1-wht/blk-A/T Pressure control solenoid valve A<br />2-yel/blu-Torque converter clutch solenoid<br />4-grn/wht-Shift solenoid B<br />6-blu/blk-Shift Solenoid A<br />7-wht/red-Mainshaft speed sensor<br />8-brn/wht-A/T Pressure control solenoid valve B<br />9-red-Position switch D3<br />10-wht-position switch R<br />11-blu-position switch 2<br />12-blu/wht-position switch neutral or park<br />14-grn-countershaft speed sensor ground<br />15-blu-countershaft speed sensor<br />18-blu/yel-position switch D3 or D<br />20-yel-position switch D<br />21-wht/grn-mainshaft speed sensor ground<br /><br /><strong>Connector E (31 pins)</strong><br />1-grn/yel-Immobilizer fuel pump relay<br />2-wht/red-Secondary O2 Sensor EX Only<br />3-brn/yel-Logic ground<br />4-pnk-Sensor ground<br />5-yel/blu-Sensor voltage source<br />6-blk/wht-Secondary O2 sensor heater control EX Only<br />7-red/yel-PGM-FI main relay 1<br />9-yel/blk-Ignition input signal<br />12-blu/orn-Cruise control signal<br />13-wht/blu-Interlock control unit<br />14-lt grn-Fuel tank pressure sensor<br />15-grn/red-Electrical load detector<br />16-lt grn/blk-Power steering pressure switch<br />18-red-A/C Clutch<br />20-blu/red-EVAP bypass solenoid valve<br />21-lt grn/red-EVAP Canister shut valve<br />22-wht/blk-Brake pedal position switch<br />23-lt blu-K line<br />24-yel-Multiplex control unit comm line<br />26-blu-Engine speed pulse<br />27-red/blu-Immobilizer code<br />29-brn-Service check signal<br />30-red/wht-Write enable signal<br />31-grn/orn-MIL or check engine light enable</font></font>

 
Rep Power: 349

Some of these pins are different between the different motors and ecus.