How to: ECU Wiring

This page is under construction, I'm not entirely sure that these are all correct because I haven't got around to comparing it with mine, the connections to the Field Sfc seem to be the same though.

Below is a diagram of the ECU wiring plugs 'A' 'B' and  'C'  as well as the number that each wire corresponds to, some numbers have no wires, or just a clip.

PR3 ECU

A

1	3	5	7	9	11	13	15	17
2	4	6	8	10	12	14	16	18

 

B

1	3	5	7	9	11	13	15	17	19
2	4	6	8	10	12	14	16	18	20

 

C

1	3	5	7	9	11	13	15
2	4	6	8	10	12	14	16

 

A01  BRN INJ1 fuel injector control # 1
A02  BLK PG1 Ground
A03  RED INJ2 fuel injector control # 2
A04  BLK PG2 Ground
A05  LT BLU INJ3 fuel injector control # 3
A06  GRN  purge cut-off solinoid valve
A07  YEL INJ4 fuel injector control # 4
A08  VTS VTEC solenoid
A09  
A10  Pressure Regulator Cutoff Solenoid
A11  BLU/YEL IACV from electronic air control valve
A12  GRN/BLK FLR1 fuel pump control
A13  YEL/BLK IGP1 power Input
A14  GRN/BLK FLR2 fuel pump control
A15  YEL/BLK IGP2 power Input
A16  BRN/BLK  ground
A17 
A18  BLK/RED  ground

 

B01  WHT/GRN VBP Battery Backup
B02 
B03  YEL ACC a/c compressor clutch relay cont
B04  FANC 
B05   WHT/YEL VTM VTEC pressure switch
B06   GRN/ORN MIL check engine warning light
B07  
B08   YEL/GRN ACS a/c on input
B09  
B10   ORN CYP P crank sensor (1)
B11   Fuse Box
B12  WHT  CYP M crank sensor (2)
B13  BLU/WHT  starting input
B14  BLU ALT alternator output signal
B15  WHT   ignition output signal
B16  YEL/RED VSS VSS
B17   WHT   ignition output signal
B18  
B19   KS Knock sensor
B20  BRN SCS ignition timing adjusting connector

 

C01  BLU/GRN CKP P CYL sensor (1)
C02  BLU/YEL CKP M CYL sensor (2)
C03  ORN/BLU TDC P TDC sensor (1)
C04  WHT/BLU TDC M TDC sensor (2)
C05  RED/YEL IAT intake air temperature sensor
C06  RED/WHT  ECT coolant temperature sensor
C07  RED/BLU TPS throttle angle sensor
C08  O2S Dual O2 Sensor (JDM)
C09  RED/WHT  PA atomosphere pressure sensor input
C10  GRN/WHT  BKSW brake light switch
C11  GRN/WHT  MIL ground
C12  GRN/WHT  SG2 TPS GND
C13  YEL/WHT VCC1 TPS 5V
C14  SG1 MAP GND
C15  YEL/RED VCC2 MAP 5V
C16  WHT O2S oxygen sensor

 

 

This website has been gradually growing since I started it in early 2002. Originally I was simply documenting modifications and repairs to my car but I decided to publish it when I began to discover others were interested in the information. If you need help or have a how-to relating to Honda B series VTEC engines, or DA or DC2R Integras you can
email me.

While all care is taken to provide correct information, mistakes are occasionally made and I cannot be responsible for any damage that occurs to readers vehicles.