Connectors
Shown from the wire side of the ECU:
Shown from the ECU side of the connector:
Pin Description
IGP1
|
A25
|
Power from main relay
|
IGP2
|
B1
|
Power from main relay
|
PG1
|
A23
|
Ground
|
PG2
|
A24
|
Ground
|
VBU
|
D1
|
Voltage back up
|
LG1
|
A26
|
Logic ground
|
LG2
|
B2
|
Logic ground
|
|
|
|
CYP P
|
B11
|
Distributor cylinder sensor
|
CYP M
|
B12
|
Distributor cylinder sensor
|
TDC P
|
B13
|
Distributor TDC sensor
|
TDC M
|
B14
|
Distributor TDC sensor
|
CKP P
|
B15
|
Distributor crank sensor
|
CKP M
|
B16
|
Distributor crank sensor
|
|
|
|
INJ1
|
A1
|
Injector #1
|
INJ2
|
A3
|
Injector #2
|
INJ3
|
A5
|
Injector #3
|
INJ4
|
A2
|
Injector #4
|
|
|
|
VCC1
|
D19
|
MAP 5V
|
MAP
|
D17
|
Manifold pressure sensor
|
SG1
|
D21
|
MAP logic ground
|
VCC2
|
D20
|
TPS 5V
|
TPS
|
D11
|
Throttle position sensor
|
SG2
|
D22
|
TPS ground
|
IAT
|
D15
|
Air temperature sensor
|
ECT
|
D13
|
Water temperature sensor
|
VSS
|
B10
|
Speed sensor
|
ELD
|
D10
|
Electrical load detector
|
EGRL
|
D12
|
EGR lift
|
-
|
B6
|
Analog input #2
|
|
|
|
STS
|
B9
|
Start Signal
|
PSP
|
B8
|
Power steering pressure
|
BKSW
|
D2
|
Brake Switch
|
ACS
|
B5
|
AC Switch
|
VTP
|
D6
|
VTEC Pressure Switch
|
SCS
|
D4
|
Service Connector
|
|
|
|
FLR1
|
A7/A8
|
Fuel pump relay
|
ICM
|
A21/A22
|
Igniter output
|
IACV
|
A9
|
Idle valve
|
ACC
|
A15
|
AC Clutch
|
FANC
|
A12
|
Radiator fan control
|
MIL
|
A13
|
Check engine light
|
IAB
|
A17
|
Secondary intake runners
|
VTS
|
A4
|
VTEC solenoid
|
EGR
|
A11
|
EGR
|
O2HTC
|
A6
|
O2 sensor heater
|
EVAP
|
A20
|
Purge valve
|
ALTC
|
A16
|
Alternator
|
-
|
A10
|
Nitrous Output
|
|
|
|
TXRX
|
D7
|
Serial comms
|
OBDII ECU Inputs/Outputs
Function
|
OBDI
|
OBDIIA
|
OBDIIB
|
ACS
|
B5
|
C5
|
A27
|
Analog #2
|
B6
|
-
|
-
|
PSP
|
B8
|
C16
|
A26
|
SCS
|
D4
|
C7
|
A10
|
BKSW
|
D2
|
D5
|
A32
|
VTP
|
D6
|
C15
|
C10
|
EGRL
|
D12
|
-
|
-
|
Boost Control
|
A11
|
A7
|
B7
|
ACC
|
A15
|
A17
|
A17
|
PCS
|
A20
|
A15
|
A6
|
IAB
|
A17
|
A9
|
B32*
|
FANC
|
A12
|
A27
|
A20
|
ALTC
|
A16
|
A19
|
C2
|
ELD
|
D10
|
D16
|
A30
|
Extra Output
|
A10
|
C21
|
A10*
|
* cannot be used.
|