Tag Archive 'ECU'

Jul 11 2008

OBD1 Honda/Acura ECU Pinouts

Published by Benjamin Jones under Tech Info

KOEO = Key on; Engine OFF
KOER = Key on; Engine Running

Pin
Function
Color
Voltage
A1
INJ1
Brown
Battery Voltage with KOEO
A2
INJ4
Yellow
Battery Voltage with KOEO
A3
INJ2
Red
Battery Voltage with KOEO
A4
VTS – VTEC Solenoid
Green/Yellow
N/A
A5
INJ3
Blue
Battery Voltage with KOEO
A6
PO2SHTC – O2 Sensor Heating Element
Orange/White
Battery Voltage with KOEO
A7
FLR1- Fuel Pump
Green/Black
Battery Voltage with KOEO
A8
Empty
-
-
A9
IACV
Black/Blue
10V KOEO with warm engine
A10
Empty
-
-
A11
EGR
Red
N/A
A12
FANC – Engine Coolant Temp. Switch
Blue/Red
N/A
A13
CEL
Blue/White
N/A
A14
Empty
-
-
A15
ACC – A/C Clutch
Red/Blue
N/A
A16
ALT C – Alternator
White/Green
N/A
A17
IAB – IAB Solenoid
Pink
N/A
A18
Auto Lock Up Solenoid
Orange/Red
N/A
A19
Intake Control Solenoid
White
Battery Voltage with KOEO
A20
PCS EVAP Purge Control Solenoid
Red/Green
N/A
A21
ICM – Ignition Control Module
Yellow/Green
10V KOEO
A22
Ignitor “
A23
PG1 – Ground
Black
< 1V
A24
PG2 – Ground
A25
IGP2 – Battery Positive to Main Relay
Yellow/Black
Battery Voltage with KOEO
A26
LG1 – Ground
Black/Red
<1V
B1
IGP2 – To A25
Yellow/Black
Battery Voltage with KOEO
B2
LG2 – Ground/Shields for CYP/TDC
Brown/Black
<1V
B3
Upshift/Downshift
Orange
N/A
B4
Pink
N/A
B5
ACS – A/C Switch
Blue/Black
5V = KOEO/A/C Off; <1V KOER/A/C On
B6
Empty
-
-
B7
Park/Neutral Switch
Light Green
<1V KOEO; 5V KOER
B8
PSPSW – Power Steering Pressure Switch
Red/Green
0V KOEO; Battery Voltage KOER while turning
B9
Starter Signal
Blue/Red
Battery Voltage when in Start Position
B10
VSS – Vehicle Speed Sensor
Orange
Pulses 0-12V while spinning front-left wheel
B11
CYP P
Orange
CYP Sensor Input
B12
CYP M
White
CYP Sensor Signal
B13
TDC P
Orange/Blue
TDC Sensor Input
B14
TDC M
White/Green
TDC Sensor Signal
B15
CKP P
Blue/Green
CKP Sensor Input
B16
CKP M
Blue/Yellow
CKP Sensor Signal
D1
VBU – Back Up Power
White/Yellow
Battery Voltage at All Times
D2
BKSW – Brake Switch
Green/White
Battery Voltage at All Times
D3
KS – Knock Sensor
Red/Blue
N/A
D4
SCS – Service Check Connector
Brown/White
Manual 5V; Auto 11V
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
White/Red
4.5V KOEO; Decreases Under Electrical Load
D10
ELD – Electrical Load Detector
Green/Black
N/A
D11
TPS
Red/Black
0.5V Closed; 4.5V Wide Open
D12
EGR Valve Lift Sensor
White/Black
1.2V KOEO
D13
ECT – ECT Sensor Input
Yellow/Blue
5V KOEO
D14
PHO2S – O2 Sensor Heater
White
0.4-0.5V Cold; 0.1V Warm
D15
IAT
Red/Yellow
0.05-4.5V Depending on Temperature
D16
VREF
-
-
D17
MAP
White/Blue
3V KOEO
D18
Transmission Control Module (Auto)
Light Green/Black
N/A
D19
Reference Voltage
Red/White
5V KOEO
D20
Reference Voltage
Yellow/White
5V KOEO
D21
Sensor Ground
Blue/White
<1V
D22
Sensor Ground
Green/White
<1V

No responses yet

Jul 11 2008

OBD1 Honda/Acura ECU List

Published by Benjamin Jones under Tech Info

OBD1 Civic/Integra
P07
1992-1995 Civic VX D15Z1 California P07s don’t have lean-burn
P05
1992-1995 Civic CX D15B8
P06
1992-1995 Civic DX/LX D15B7
P28
1992-1995 Civic EX/Si D16Z6
P30
1992-1995 Del Sol VTEC/JDM SiR
P61
1992-1993 Integra GSR B17A
PR3
1992-1993 JDM Integra XSi/RSi
PR4
1992-1993 Integra RS/LS/GS
P72 1994-1995 Integra GSR
P74 1992-1995 Integra LS/GS
P75 1992-1995 Integra LS/GS
P08 1992-1995 Civic/CRX VTi/VXi
P27 1992-1995 JDM/EDM Non-VTEC D16
P29 1992-1995 JDM Domani ZC
P54 1992-1995 Domani/Accord 1.8L
P70 1992-1995 Domani SOHC VTEC ZC
P71 1992-1995 Integra SOHC VTEC D116A
P76 1994-1995 JDM Integra SOHC ZC
P84 1992-1995 JDM Civic ETi VTEC-E Automatic (eww)
P91 1992-1995 JDM Civic Coupe SOHC VTEC
OBD1 Prelude/Accord
P0A 1994-1995 Accord EX
P0B 1992-1995 Accord 2.2L F22B Non-VTEC
P0C 1992-1995 Accord 2.2L F22B DOHC Non-VTEC
PT3 1990-1993 Accord F22A1
PT5 1990-1993 EDM Accord F20A7
PT6 1991-1993 Accord Non-VTEC F22A6 IABs
P11 1992-1995 Prelude 2.0i F20A4
P12 1992-1995 Prelude S F22A Non-VTEC
P13 1993-1995 Prelude H22A DOHC VTEC
P14 1993-1995 Prelude Si H23A Non-VTEC
P39 1992-1995 JDM Prelude F22B Non-VTEC

No responses yet

Jul 11 2008

OBD0 Honda/Acura ECU List

Published by Benjamin Jones under Tech Info

OBD0 DPFI
PM5
1988-1991
Civic STD/DX/LX; CRX DX
PM9
1988-1991
Civic STD/DX/LX; CRX DX
P04
1992-1995
EDM DXi
PW1
?-1995
EDM Concerto 1.5i
OBD0 Non-VTEC Civic/Integra
PG7
1988-1989
Integra D16A1
Electronic Advance
PM6
1988-1991
Civic/CRX Si D16A6
PM7
1988-1991
JDM Civic Si DOHC ZC
PP5
1988-1994
Concerto, Rover, GSi, GTi
PR5
1990-1991
JDM Integra ZXi
PS9
1990-1991
Civic EX D16A6
Usually automatic, good for 1-wire VTEC
XE5
1988-1991
ZC
Mugen Race Platform
OBD0 Non-VTEC Accord/Prelude B20A
PK2
1988-1991
Prelude B20A
3rd Generation
PH3
1986-1989
JDM Accord B20A
OBD0 Oddballs
PM8
1988-1991
CRX HF
PR4 1990-1991 Integra LS/GS B18A1

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