100%
Stock ECU being replaced
SL4-A-18 Auxiliary output 9
5 no data
7–8 no data
SL4-A-20 Digital input 1
11 no data
SL4-A-19 Auxiliary output 10
14 no data
SL4-B-3 EFI relay output (low side, 200 mA)
SL4-A-14 Auxiliary output 5
SL4-A-15 Auxiliary output 6
SL4-A-16 Auxiliary output 7
22 no data
SL4-B-13 Analog input 3
SL4-A-22 Digital input 3
SL4-A-23 Digital input 4
SL4-A-24 Digital input 5
SL4-A-17 Auxiliary output 8
SL4-B-21 Analog input 8 (switchable 1k pull-up)
SL4-B-22 Analog input 9 (switchable 1k pull-up)
31 no data
SL4-A-25 Digital input 6
OEM-A
Stock ECU being replaced
1Coolant temp gauge drive
5 no data
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
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
SL4-A-2 Injection channel 2
SL4-A-3 Injection channel 3
SL4-A-4 Injection channel 4
6–8 no data
Power source 2 (main relay)
GND
SL4-A-1 Injection channel 1
SL4-A-10 Auxiliary output 1
13–19 no data
GND
GND
SL4-A-13 Auxiliary output 4
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
SL4-A-11 Auxiliary output 2
SL4-A-26 Ignition channel 1
SL4-A-21 Digital input 2
6 no data
0V sensor
SL4-B-5 Crank index sensor +
SL4-B-6 Crank index sensor −
SL4-A-12 Auxiliary output 3
SL4-A-27 Ignition channel 2
SL4-A-28 Ignition channel 3
SL4-A-29 Ignition channel 4
SL4-B-14 Analog input 4
SL4-B-15 Analog input 5
SL4-B-11 Analog input 1
0V sensor
5V ref
SL4-B-7 Sync sensor +
SL4-B-8 Sync sensor −
23 no data
SL4-B-23 Analog input 10 (switchable 1k pull-up)
SL4-B-20 Analog input 7 (switchable 1k pull-up)
SL4-B-19 Analog input 6
SL4-B-12 Analog input 2
0V sensor
0V sensor
OEM-C
Stock ECU being replaced
1Primary O2 heater
4Ignition coil 1
5Alternator FR signal
6 no data
7Sensor ground 1
8Crank sensor + (CKP+)
9Crank sensor − (CKP−)
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
30Cam (TDC2) sensor −
31Timing ground
1–16 no data
OEM-D
Stock ECU being replaced
1–16 no data
SL4
SL4-A
SL4
1Injection channel 1
2Injection channel 2
3Injection channel 3
4Injection channel 4
5–8 no data
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
19Auxiliary output 10
20Digital input 1
21Digital input 2
22Digital input 3
23Digital input 4
24Digital input 5
25Digital input 6
26Ignition channel 1
27Ignition channel 2
28Ignition channel 3
29Ignition channel 4
30–33 no data
34Aux 9–10 14V supply
OEM-B-11 Injector 1
OEM-B-3 Injector 2
OEM-B-4 Injector 3
OEM-B-5 Injector 4
5–8 no data
OEM-B-12 VTEC solenoid
OEM-C-1 Primary O2 heater
OEM-C-11 Secondary O2 heater control
OEM-B-23 Idle air control valve
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-A-1 Coolant temp gauge drive
OEM-A-12 Immobilizer indicator light
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-4 Ignition coil 1
OEM-C-12 Ignition coil 2
OEM-C-13 Ignition coil 3
OEM-C-14 Ignition coil 4
30–33 no data
Aux 9–10 14V supply
SL4-B
SL4
1ECU 14V supply
2Sensor supply Vref1 5.0V
3EFI relay output (low side, 200 mA)
5Crank index sensor +
6Crank index sensor −
7Sync sensor +
8Sync sensor −
10Analog sensor 0V reference
11Analog input 1
12Analog input 2
13Analog input 3
14Analog input 4
15Analog input 5
18ECU ground
19Analog input 6
20Analog input 7 (switchable 1k pull-up)
21Analog input 8 (switchable 1k pull-up)
22Analog input 9 (switchable 1k pull-up)
23Analog input 10 (switchable 1k pull-up)
26ECU ground
29–30 no data
ECU 14V supply
5V ref
OEM-A-15 Fuel pump relay (USDM)
OEM-C-8 Crank sensor + (CKP+)
OEM-C-9 Crank sensor − (CKP−)
OEM-C-20 Cam (TDC1) sensor +
OEM-C-21 Cam (TDC1) sensor −
0V sensor
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
GND
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
GND
29–30 no data
SP-14V · 5 pins
SP-GND · 7 pins
SP-0V · 6 pins
Press enter or space to select a node. You can then use the arrow keys to move the node around. Press delete to remove it and escape to cancel.
Press enter or space to select an edge. You can then press delete to remove it or escape to cancel.