100%
Stock ECU being replaced
KV12-B-11 Auxiliary Output 2
KV12-B-5 Injection Channel 5
KV12-B-6 Injection Channel 6
KV12-B-7 Injection Channel 7
5 no data
KV12-B-8 Injection Channel 8
7–8 no data
KV12-C-27 Digital Input 1
11 no data
KV12-B-12 Auxiliary Output 3
14 no data
KV12-D-9 EFI Relay Output (Low Side 200mA)
KV12-B-14 Auxiliary Output 5
KV12-B-15 Auxiliary Output 6
KV12-B-13 Auxiliary Output 4
KV12-B-16 Auxiliary Output 7
22 no data
KV12-C-4 Analog Input Channel 3
KV12-C-29 Digital Input 3
KV12-C-30 Digital Input 4
KV12-C-31 Digital Input 5
KV12-B-17 Auxiliary Output 8
KV12-C-9 Analog Input Channel 8
KV12-C-10 Analog Input Channel 9
31 no data
KV12-C-32 Digital Input 6
OEM-A
Stock ECU being replaced
1Coolant temp gauge drive
2Air control valve solenoid
3Evap bypass solenoid
4Evap canister vent shut valve
5 no data
6Evap canister purge valve
7–8 no data
9Vehicle speed sensor
11 no data
12Immobilizer indicator light
14 no data
15Fuel pump relay (USDM)
16Fuel pump relay (JDM)
17A/C clutch relay
18Check engine light (MIL)
20Radiator fan relay
22 no data
23Secondary O2 sensor
24Starter switch signal
26Power steering load detect
27A/C switch (request)
28Air pump relay
29Fuel tank pressure sensor
30Electrical load detector
31 no data
32Brake switch
Power source 1 (main relay)
GND
KV12-B-2 Injection Channel 2
KV12-B-3 Injection Channel 3
KV12-B-4 Injection Channel 4
6–8 no data
Power source 2 (main relay)
GND
KV12-B-1 Injection Channel 1
KV12-B-18 Auxiliary Output 9
13–19 no data
GND
GND
KV12-B-10 Auxiliary Output 1
24–25 no data
OEM-B
Stock ECU being replaced
1Power source 1 (main relay)
2Power ground 1
3Injector 2
4Injector 3
5Injector 4
6–8 no data
9Power source 2 (main relay)
10Power ground 2
11Injector 1
12VTEC solenoid
13–19 no data
20Ground
22Ground
23Idle air control valve
24–25 no data
KV12-A-10 Lambda 1 Heater -
KV12-A-1 Injection Channel 9
KV12-B-26 Ignition Channel 1
KV12-C-28 Digital Input 2
6 no data
0V sensor
KV12-D-4 Crank Index Sensor +
KV12-D-5 Crank Index Sensor -
KV12-C-33 Digital Input 7
KV12-A-11 Lambda 2 Heater -
KV12-B-27 Ignition Channel 2
KV12-B-28 Ignition Channel 3
KV12-B-29 Ignition Channel 4
KV12-C-5 Analog Input Channel 4
KV12-C-6 Analog Input Channel 5
KV12-C-2 Analog Input Channel 1
0V sensor
5V ref
KV12-D-6 Sync Sensor +
KV12-D-7 Sync Sensor -
23 no data
KV12-C-11 Analog Input Channel 10
KV12-C-8 Analog Input Channel 7
KV12-C-7 Analog Input Channel 6
KV12-C-3 Analog Input Channel 2
5V ref
0V sensor
0V sensor
OEM-C
Stock ECU being replaced
1Primary O2 heater
2Alternator control
4Ignition coil 1
5Alternator FR signal
6 no data
7Sensor ground 1
8Crank sensor + (CKP+)
9Crank sensor − (CKP−)
10VTEC pressure switch
11Secondary O2 heater control
12Ignition coil 2
13Ignition coil 3
14Ignition coil 4
15Secondary O2 sensor
16Primary O2 sensor
17MAP sensor
18Sensor ground 2
19Sensor 5V supply 1 (MAP)
20Cam (TDC1) sensor +
21Cam (TDC1) sensor −
23 no data
24Air pump electric current sensor
25Intake air temp sensor
26Coolant temp sensor
27Throttle position sensor
28Sensor 5V supply 2
30Cam (TDC2) sensor −
31Timing ground
1–16 no data
OEM-D
Stock ECU being replaced
1–16 no data
KV12
KV12-A
KV12
1Injection Channel 9
10Lambda 1 Heater -
11Lambda 2 Heater -
19ECU Ground
OEM-C-2 Alternator control
OEM-C-1 Primary O2 heater
OEM-C-11 Secondary O2 heater control
GND
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
18Auxiliary Output 9
26Ignition Channel 1
27Ignition Channel 2
28Ignition Channel 3
29Ignition Channel 4
34ECU Ground
OEM-B-11 Injector 1
OEM-B-3 Injector 2
OEM-B-4 Injector 3
OEM-B-5 Injector 4
OEM-A-2 Air control valve solenoid
OEM-A-3 Evap bypass solenoid
OEM-A-4 Evap canister vent shut valve
OEM-A-6 Evap canister purge valve
GND
OEM-B-23 Idle air control valve
OEM-A-1 Coolant temp gauge drive
OEM-A-12 Immobilizer indicator light
OEM-A-18 Check engine light (MIL)
OEM-A-16 Fuel pump relay (JDM)
OEM-A-17 A/C clutch relay
OEM-A-20 Radiator fan relay
OEM-A-28 Air pump relay
OEM-B-12 VTEC solenoid
OEM-C-4 Ignition coil 1
OEM-C-12 Ignition coil 2
OEM-C-13 Ignition coil 3
OEM-C-14 Ignition coil 4
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
10Analog Input Channel 9
11Analog Input Channel 10
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
32Digital Input 6
33Digital Input 7
GND
OEM-C-17 MAP sensor
OEM-C-27 Throttle position sensor
OEM-A-23 Secondary O2 sensor
OEM-C-15 Secondary O2 sensor
OEM-C-16 Primary O2 sensor
OEM-C-26 Coolant temp sensor
OEM-C-25 Intake air temp sensor
OEM-A-29 Fuel tank pressure sensor
OEM-A-30 Electrical load detector
OEM-C-24 Air pump electric current sensor
0V sensor
0V sensor
GND
OEM-A-9 Vehicle speed sensor
OEM-C-5 Alternator FR signal
OEM-A-24 Starter switch signal
OEM-A-26 Power steering load detect
OEM-A-27 A/C switch (request)
OEM-A-32 Brake switch
OEM-C-10 VTEC pressure switch
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)
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-C-8 Crank sensor + (CKP+)
OEM-C-9 Crank sensor − (CKP−)
OEM-C-20 Cam (TDC1) sensor +
OEM-C-21 Cam (TDC1) sensor −
OEM-A-15 Fuel pump relay (USDM)
Auxiliary Output 9-12 14V Supply
5V ref
5V ref
SP-GND · 10 pins
SP-14V · 6 pins
SP-0V · 7 pins
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Press enter or space to select an edge. You can then press delete to remove it or escape to cancel.