100%
Stock ECU being replaced
KV12-D-11 Knock 1 +
Ignition power 2 (IGP2)
Ignition power 1 (IGP1)
GND
GND
KV12-D-4 Crank Index Sensor +
GND
GND
KV12-A-11 Lambda 2 Heater -
KV12-B-10 Auxiliary Output 1
KV12-B-29 Ignition Channel 4
KV12-B-28 Ignition Channel 3
KV12-B-27 Ignition Channel 2
KV12-B-26 Ignition Channel 1
KV12-C-27 Digital Input 1
KV12-D-6 Sync Sensor +
5V ref
5V ref
0V sensor
0V sensor
KV12-A-18 Lambda 1 Nernst Cell (Vs)
KV12-C-3 Analog Input Channel 2
KV12-C-2 Analog Input Channel 1
KV12-A-25 Lambda 1 Pump Cell (Ip)
OEM-A
Stock ECU being replaced
1Knock sensor (KS)
2Ignition power 2 (IGP2)
3Ignition power 1 (IGP1)
4Power ground 2 (PG2)
5Power ground 1 (PG1)
7Crank position sensor (CKP)
8Logic ground 2 (LG2)
9Logic ground 1 (LG1)
10A/F sensor heater control (AFSHTC)
12Idle air control valve (IACV)
13Ignition coil 4 (IGPLS4)
14Ignition coil 3 (IGPLS3)
15Ignition coil 2 (IGPLS2)
16Ignition coil 1 (IGPLS1)
18Neutral position switch (NC)
19Camshaft position A (CMP A)
20Sensor 5V supply 2 (VCC2)
21Sensor 5V supply 1 (VCC1)
23Sensor ground 2 (SG2)
24Sensor ground 1 (SG1)
28A/F sensor - (AFS-, wideband Vs)
29Throttle position sensor (TPS)
30Manifold absolute pressure (MAP)
31A/F sensor + (AFS+, wideband Ip)
KV12-B-12 Auxiliary Output 3
KV12-B-4 Injection Channel 4
KV12-B-3 Injection Channel 3
KV12-B-2 Injection Channel 2
KV12-B-1 Injection Channel 1
KV12-B-11 Auxiliary Output 2
KV12-C-5 Analog Input Channel 4
KV12-C-28 Digital Input 2
KV12-C-29 Digital Input 3
KV12-C-7 Analog Input Channel 6
KV12-C-6 Analog Input Channel 5
KV12-B-13 Auxiliary Output 4
KV12-B-5 Injection Channel 5
OEM-B
Stock ECU being replaced
1VTC oil control solenoid (+)
2Injector 4 (INJ4)
3Injector 3 (INJ3)
4Injector 2 (INJ2)
5Injector 1 (INJ1)
6VTEC solenoid (VTS)
8Coolant temp sensor (ECT)
10Alternator L signal (ALTL)
11VTEC oil pressure switch (VTPSW)
13Alternator FR signal (ALTF)
17Intake air temp sensor (IAT)
18Alternator control (ALTC)
21Evap canister purge valve (PCS)
KV12-B-7 Injection Channel 7
GND
0V sensor
KV12-D-9 EFI Relay Output (Low Side 200mA)
KV12-B-17 Auxiliary Output 8
KV12-D-15 Ignition Switch Input
KV12-B-14 Auxiliary Output 5
KV12-C-8 Analog Input Channel 7
KV12-C-9 Analog Input Channel 8
KV12-C-30 Digital Input 4
KV12-B-15 Auxiliary Output 6
KV12-B-16 Auxiliary Output 7
KV12-B-6 Injection Channel 6
KV12-C-4 Analog Input Channel 3
KV12-A-10 Lambda 1 Heater -
KV12-C-31 Digital Input 5
KV12-B-8 Injection Channel 8
OEM-E
Stock ECU being replaced
3Reverse lockout solenoid (RVS, Type-S)
4Logic ground 3 (LG3)
5Sensor ground 3 (SG3)
8Main relay control (MRLY)
9A/F sensor heater relay control (AFSHTCR)
10Ignition switch signal (IG1)
12Radiator fan control (FANC)
14Fuel tank pressure sensor (FTP)
15Electrical load detector (ELD)
16Power steering pressure switch (PSPSW)
17Immobilizer fuel pump relay (IMO FPR)
18A/C clutch relay (ACC)
19Evap vent shut valve (VSV)
20Secondary heated O2 sensor (SHO2S)
21Secondary O2 heater control (SO2SHTC)
22Brake switch (BKSW)
31Malfunction indicator lamp (MIL)
KV12
KV12-A
KV12
10Lambda 1 Heater -
11Lambda 2 Heater -
18Lambda 1 Nernst Cell (Vs)
19ECU Ground
25Lambda 1 Pump Cell (Ip)
OEM-E-21 Secondary O2 heater control (SO2SHTC)
OEM-A-10 A/F sensor heater control (AFSHTC)
OEM-A-28 A/F sensor - (AFS-, wideband Vs)
GND
OEM-A-31 A/F sensor + (AFS+, wideband Ip)
KV12-B
KV12
1Injection Channel 1
2Injection Channel 2
3Injection Channel 3
4Injection Channel 4
5Injection Channel 5
6Injection Channel 6
7Injection Channel 7
8Injection Channel 8
9ECU Ground
10Auxiliary Output 1
11Auxiliary Output 2
12Auxiliary Output 3
13Auxiliary Output 4
14Auxiliary Output 5
15Auxiliary Output 6
16Auxiliary Output 7
17Auxiliary Output 8
26Ignition Channel 1
27Ignition Channel 2
28Ignition Channel 3
29Ignition Channel 4
34ECU Ground
OEM-B-5 Injector 1 (INJ1)
OEM-B-4 Injector 2 (INJ2)
OEM-B-3 Injector 3 (INJ3)
OEM-B-2 Injector 4 (INJ4)
OEM-B-21 Evap canister purge valve (PCS)
OEM-E-19 Evap vent shut valve (VSV)
OEM-E-3 Reverse lockout solenoid (RVS, Type-S)
OEM-E-31 Malfunction indicator lamp (MIL)
GND
OEM-A-12 Idle air control valve (IACV)
OEM-B-6 VTEC solenoid (VTS)
OEM-B-1 VTC oil control solenoid (+)
OEM-B-18 Alternator control (ALTC)
OEM-E-12 Radiator fan control (FANC)
OEM-E-17 Immobilizer fuel pump relay (IMO FPR)
OEM-E-18 A/C clutch relay (ACC)
OEM-E-9 A/F sensor heater relay control (AFSHTCR)
OEM-A-16 Ignition coil 1 (IGPLS1)
OEM-A-15 Ignition coil 2 (IGPLS2)
OEM-A-14 Ignition coil 3 (IGPLS3)
OEM-A-13 Ignition coil 4 (IGPLS4)
GND
KV12-C
KV12
1ECU Ground
2Analog Input Channel 1
3Analog Input Channel 2
4Analog Input Channel 3
5Analog Input Channel 4
6Analog Input Channel 5
7Analog Input Channel 6
8Analog Input Channel 7
9Analog Input Channel 8
17Analog Sensor 0V Reference
25Analog Sensor 0V Reference
26ECU Ground
27Digital Input 1
28Digital Input 2
29Digital Input 3
30Digital Input 4
31Digital Input 5
GND
OEM-A-30 Manifold absolute pressure (MAP)
OEM-A-29 Throttle position sensor (TPS)
OEM-E-20 Secondary heated O2 sensor (SHO2S)
OEM-B-8 Coolant temp sensor (ECT)
OEM-B-17 Intake air temp sensor (IAT)
OEM-B-13 Alternator FR signal (ALTF)
OEM-E-14 Fuel tank pressure sensor (FTP)
OEM-E-15 Electrical load detector (ELD)
0V sensor
0V sensor
GND
OEM-A-18 Neutral position switch (NC)
OEM-B-10 Alternator L signal (ALTL)
OEM-B-11 VTEC oil pressure switch (VTPSW)
OEM-E-16 Power steering pressure switch (PSPSW)
OEM-E-22 Brake switch (BKSW)
KV12-D
KV12
1ECU 14V Supply
2Auxiliary Output 13-16 14V Supply
4Crank Index Sensor +
5Crank Index Sensor -
6Sync Sensor +
7Sync Sensor -
9EFI Relay Output (Low Side 200mA)
11Knock 1 +
15Ignition Switch Input
20Auxiliary Output 9-12 14V Supply
21Sensor Supply Vref1: 5.0V
22Sensor Supply Vref2: 5.0V
ECU 14V Supply
Auxiliary Output 13-16 14V Supply
OEM-A-7 Crank position sensor (CKP)
SP-0V · 3 pins
OEM-A-19 Camshaft position A (CMP A)
SP-0V · 3 pins
OEM-E-8 Main relay control (MRLY)
OEM-A-1 Knock sensor (KS)
OEM-E-10 Ignition switch signal (IG1)
Auxiliary Output 9-12 14V Supply
5V ref
5V ref
SP-GND · 11 pins
SP-14V · 6 pins
SP-0V · 8 pins
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