Pin Number
Non-OBD PR3/PWO Ecu
Non-OBD PR4 ECU
OBD-1 PR4 ECU
OBD-1 P61 ECU
OBD-1 P72 ECU
OBD-2 P72 ECU
OBD-2 P73 ECU
A1
#1 Injector
#1 Injector
#1 Injector
#1 Injector
#1 Injector
#4 Injector
#4 Injector
A2
Ground
Ground
#4 Injector
#4 Injector
#4 Injector
#3 Injector
#3 Injector
A3
#2 Injector
#2 Injector
#2 Injector
#2 Injector
#2 Injector
#2 Injector
#2 Injector
A4
Ground
Ground
-
VTEC Spool Solenoid Valve
VTEC Spool Solenoid Valve
#1 Injector
#1 Injector
A5
#3 Injector
#3 Injector
#3 Injector
#3 Injector
#3 Injector
Second O2 Sensor Heat Control
Second O2 Sensor Heat Control
A6
Ground
Ground
O2 Sensor Heat Control
O2 Sensor Heat Control
O2 Sensor Heat Control
Primary O2 Sensor Heat Control
Primary O2 Sensor Heat Control
A7
#4 Injector
#4 Injector
Fuel Pump Relay (FLR1)
Fuel Pump Relay (FLR1)
Fuel Pump Relay (FLR1)
-
-
A8
VTEC Spool Solenoid Valve
-
Fuel Pump Relay (FLR2)
Fuel Pump Relay (FLR2)
Fuel Pump Relay (FLR2)
VTEC Spool Solenoid Valve
VTEC Spool Solenoid Valve
A9
-
-
EACV
EACV
EACV
Logic Ground (LG1)
Logic Ground (LG1)
A10
Pressure Regulator Cutt-off Solenoid Valve
Pressure Regulator Cutt-off Solenoid Valve
Pressure Regulator Cut-off Solenoid Valve
-
-
Power Ground (PG1)
Power Ground (PG1)
A11
EACV
EACV
-
-
-
Power Source (IGP1)
Power Source (IGP1)
A12
Main Relay
Main Relay
-
-
-
Idle Air Control Valve (IACV)
Idle Air Control Valve (IACV)
A13
Main Relay
Main Relay
Check Engine Light (MIL)
Check Engine Light (MIL)
Check Engine Light (MIL)
-
-
A14
Main Relay
Main Relay
-
-
-
-
-
A15
Main Relay
Main Relay
A/C Clutch Relay
A/C Clutch Relay
A/C Clutch Relay
Evap. Purge Control Solenoid Valve (PCS)
Evap. Purge Control Solenoid Valve (PCS)
A16
Ground
Ground
-
-
-
Fuel Pump Relay (FLR)
Fuel Pump Relay (FLR)
A17
-
-
-
-
-
A/C Clutch Relay
A/C Clutch Relay
A18
Ground
Ground
-
-
-
Check Engine Light (MIL)
Check Engine Light (MIL)
A19
-
-
-
-
-
Alternator Control (ALTC)
Alternator Control (ALTC)
A20
-
-
-
Purge Control Solenoid Valve
Purge Control Solenoid Valve
Ignition Control Module (ICM)
Ignition Control Module (ICM)
A21
-
-
Ignitor Power Source (IGP1)
Ignitor Power Source (IGP1)
Ignitor Power Source (IGP1)
-
-
A22
-
-
Ignitor Power Source (IGP2)
Ignitor Power Source (IGP2)
Ignitor Power Source (IGP2)
Logic Ground (LG2)
Logic Ground (LG2)
A23
-
-
Power Ground (PG1)
Power Ground (PG1)
Power Ground (PG1)
Power Ground (PG2)
Power Ground (PG2)
A24
-
-
Power Ground (PG2)
Power Ground (PG2)
Power Ground (PG2)
Power Source (IGP2)
Power Source (IGP2)
A25
-
-
Main Relay IGP1
(IG Power)
Main Relay IGP1
(IG Power)
Main Relay IGP1
(IG Power)
Reference Voltage (VREF)
Reference Voltage (VREF)
A26
-
-
Logic Ground (LG1)
Logic Ground (LG1)
Logic Ground (LG1)
Intake Air Bypass Control Solenoid Valve (IAB)
Intake Air Bypass Control Solenoid Valve (IAB)
A27
-
-
-
-
-
Radiator Fan Control (FANC)
Radiator Fan Control (FANC)
B1
Ignition Switch
Ignition Switch
Power Source (IGP2)
Power Source (IGP2)
Power Source (IGP2)
-
-
B2
-
-
Logic Ground (LG2)
Logic Ground (LG2)
Logic Ground (LG2)
-
-
B3
A/C Clutch Relay
A/C Clutch Relay
-
-
-
-
-
B4
-
-
Service Check Connector
Service Check Connector
Service Check Connector
-
-
B5
VTEC Pressure Switch
-
A/C Switch (ACS)
A/C Switch (ACS)
A/C Switch (ACS)
-
-
B6
Check Engine Light
Check Engine Light
-
-
-
-
-
B7
-
-
-
-
-
-
-
B8
A/C Switch (ACS)
A/C Switch (ACS)
P/S Oil Pressure Switch
P/S Oil Pressure Switch
P/S Oil Pressure Switch
-
-
B9
-
-
Starter Switch Signal (STS)
Starter Switch Signal (STS)
Starter Switch Signal (STS)
-
-
B10
Crank Angle Sensor
Crank Angle Sensor
Speed Sensor
Speed Sensor
Speed Sensor
-
-
B11
Rear Defogger Switch
-
Cyl. Sensor
Cyl. Sensor
Cyl. Sensor
-
-
B12
Crank Angle Sensor
Crank Angle Sensor
Cyl. Sensor
Cyl. Sensor
Cyl. Sensor
-
-
B13
Ignition Switch
Ignition Switch
TDC Sensor
TDC Sensor
TDC Sensor
-
-
B14
Alternator
Alternator
TDC Sensor
TDC Sensor
TDC Sensor
-
-
B15
Igniter
Igniter
Crank Angle Sensor
Crank Angle Sensor
Crank Angle Sensor
-
-
B16
Speed Sensor
Speed Sensor
Crank Sensor
Crank Sensor
Crank Sensor
-
-
B17
Igniter
Igniter
-
-
-
-
-
B18
-
-
-
-
-
-
-
B19
Knock Sensor
P/S Oil Pressure Switch
-
-
-
-
-
B20
Ignition Timing Adjusting Connector
Ignition Timing Adjusting Connector
-
-
-
-
-
C1
Cyliner Position Sensor
Cyliner Position Sensor
-
-
-
CKF Sensor (CKF-P)
CKF Sensor (CKF-P)
C2
Cyliner Position Sensor
Cyliner Position Sensor
-
-
-
CKP Sensor (CKP-P)
CKP Sensor (CKP-P)
C3
TDC Sensor
TDC Sensor
-
-
-
TDC Sensor (TDC-P)
TDC Sensor (TDC-P)
C4
TDC Sensor
TDC Sensor
-
-
-
CYP Sensor (CYP-P)
CYP Sensor (CYP-P)
C5
Intake Air Temp Sensor
Intake Air Temp Sensor
-
-
-
A/C Switch (ACS)
A/C Switch (ACS)
C6
TW Sensor
TW Sensor
-
-
-
Starter Switch Signal (STS)
Starter Switch Signal (STS)
C7
Throttle Position Sensor (TPS)
Throttle Position Sensor (TPS)
-
-
-
Service Check & Ignition Timing Connector (SCS)
Service Check & Ignition Timing Connector (SCS)
C8
O2 Sensor B
-
-
-
-
K-Line
K-Line
C9
P/S Oil Pressure Switch
PA Sensor
-
-
-
Feedback At Signal (FAS)
Feedback At Signal (FAS)
C10
Brake Switch
Brake Switch
-
-
-
Voltage Back Up (VBU)
Voltage Back Up (VBU)
C11
MAP Sensor
MAP Sensor
-
-
-
CKF Sensor (CKF-M)
CKF Sensor (CKF-M)
C12
Ignition Timing Adjusting Connector
Ignition Timing Adjusting Connector
-
-
-
CKP Sensor (CKP-M)
CKP Sensor (CKP-M)
C13
Intake Air Temp Sensor
Intake Air Temp Sensor
-
-
-
TDC Sensor (TDC-M)
TDC Sensor (TDC-M)
C14
MAP Sensor
MAP Sensor
-
-
-
CYP Sensor (CYP-M)
CYP Sensor (CYP-M)
C15
MAP Sensor
MAP Sensor
-
-
-
VTEC Pressure Switch (VTM)
VTEC Pressure Switch (VTM)
C16
O2 Sensor A
-
-
-
-
P/S Oil Pressure Switch
P/S Oil Pressure Switch
C17
-
-
-
-
-
Alternator FR Signal (ALTF)
Alternator FR Signal (ALTF)
C18
-
-
-
-
-
Vehicle Speed Sensor (VSS)
Vehicle Speed Sensor (VSS)
C19
-
-
-
-
-
-
-
C20
-
-
-
-
-
-
-
C21
-
-
-
-
-
Barometric Sensor Output Signal
Barometric Sensor Output Signal
C22
-
-
-
-
-
-
-
C23
-
-
-
-
-
-
-
C24
-
-
-
-
-
-
-
C25
-
-
-
-
-
-
-
C26
-
-
-
-
-
-
-
C27
-
-
-
-
-
-
-
C28
-
-
-
-
-
-
-
C29
-
-
-
-
-
-
-
D1
-
-
Back Up Fuse
Back Up Fuse
Back Up Fuse
Throttle Postion Sensor (TPS)
Throttle Postion Sensor (TPS)
D2
-
-
Brake Switch
Brake Switch
Brake Switch
Engine Coolant Temp. Sensor (ECT)
Engine Coolant Temp. Sensor (ECT)
D3
-
-
-
Knock Sensor
Knock Sensor
MAP Sensor
MAP Sensor
D4
-
-
Service Check & Ignition Timing Connector (SCS)
Service Check & Ignition Timing Connector (SCS)
Service Check & Ignition Timing Connector (SCS)
Sensor Voltage (VCC1)
Sensor Voltage (VCC1)
D5
-
-
-
-
-
Brake Switch
Brake Switch
D6
-
-
-
VTEC Pressure Switch (VTM)
VTEC Pressure Switch (VTM)
Knock Sensor
Knock Sensor
D7
-
-
Data Link Connector
Data Link Connector
Data Link Connector
Primary O2 Sensor
Primary O2 Sensor
D8
-
-
-
-
-
Intake Air Temp. Sensor
Intake Air Temp. Sensor
D9
-
-
Alternator
Alternator
Alternator
-
-
D10
-
-
-
-
-
Sensor Voltage (VCC2)
Sensor Voltage (VCC2)
D11
-
-
Throttle Position Sensor (TPS)
Throttle Position Sensor (TPS)
Throttle Position Sensor (TPS)
Sensor Ground (SG2)
Sensor Ground (SG2)
D12
-
-
-
-
-
Sensor Ground (SG1)
Sensor Ground (SG1)
D13
-
-
TW Sensor
TW Sensor
TW Sensor
Secondary Heated O2 Sensor Ground
Secondary Heated O2 Sensor Ground
D14
-
-
O2 Sensor
O2 Sensor
O2 Sensor
Secondary Heated O2 Sensor
Secondary Heated O2 Sensor
D15
-
-
Intake Air Temp. Sensor
Intake Air Temp. Sensor
Intake Air Temp. Sensor
Electric Load Detector (ELD)
Electric Load Detector (ELD)
D16
-
-
-
-
-
-
-
D17
-
-
MAP Sensor (PB)
MAP Sensor (PB)
MAP Sensor (PB)
-
-
D18
-
-
-
-
-
-
-
D19
-
-
Sensor Voltage (VCC1)
Sensor Voltage (VCC1)
Sensor Voltage (VCC1)
-
-
D20
-
-
Sensor Voltage (VCC2)
Sensor Voltage (VCC2)
Sensor Voltage (VCC2)
-
-
D21
-
-
Sensor Ground (SG1)
Sensor Ground (SG1)
Sensor Ground (SG1)
-
-
D22
-
-
Sensor Ground (SG2)
Sensor Ground (SG2)
Sensor Ground (SG2)
-
-