Not confident with automotive wiring? Have a professional harness builder or tuner do it, or check your work before first power-up. A wiring mistake can damage the ECU, the engine or the car, or start a fire.
100%
Stock ECU being replaced
M190-A-14 Digital Input 2
M190-A-21 Digital Input 1
M190-A-30 Digital Input 3
M190-A-37 Digital Input 4
M190-A-7 Lambda Narrow Input 1
0V sensor
M190-C-13 Analogue Voltage Input 9
0V sensor
M190-C-7 Analogue Voltage Input 10
M190-B-S Low Side Injector 4
Ignition 1 voltage (key hot)
Battery positive voltage (batt hot)
0V sensor
M190-A-13 Analogue Voltage Input 11
M190-C-31 CAN Bus 1 Low
M190-C-24 CAN Bus 1 High
M190-C-35 Analogue Voltage Input 3
0V sensor
0V sensor
M190-C-29 Analogue Voltage Input 5
5V ref
5V ref
5V ref
M190-C-39 Analogue Temperature Input 2
0V sensor
M190-C-42 Analogue Voltage Input 1
Ignition 1 voltage (key hot)
0V sensor
M190-B-b Low Side Injector 3
M190-A-48 Low Side Injector 5
M190-B-a Low Side Injector 5
5V ref
M190-A-40 Low Side Injector 6
M190-A-5 Low Side Injector 4
M190-A-44 Peak Hold Injector 6
M190-B-T Low Side Injector 6
M190-A-25 Low Side Injector 7
M190-A-10 Low Side Injector 8
M190-A-36 Peak Hold Injector 7
M190-A-6 Lambda Narrow Input 2
M190-A-35 Analogue Voltage Input 12
M190-C-25 Universal Digital Input 3
M190-C-27 Universal Digital Input 4
GND
OEM-X1
Stock ECU being replaced
1Park/Neutral signal (1786)
24WD low signal (1694)
3Axle switch signal (1695)
9Brake switch signal
10HO2S signal, bank 1 sensor 2 (post-cat)
11HO2S low reference, bank 1 sensor 2
12A/C refrigerant pressure signal
13A/C refrigerant pressure sensor low reference (5514)
16Fuel level sensor signal, primary (1589)
17High speed cooling fan relay
19Ignition 1 voltage (key hot)
20Battery positive voltage (batt hot)
23APP sensor low reference
24Fuel tank pressure signal
27High-speed GMLAN serial data bus - (2501)
28High-speed GMLAN serial data bus + (2500)
29Accelerator pedal position (APP) sensor 1 signal
30APP sensor low reference
31Fuel tank pressure sensor low reference (6049)
32Accelerator pedal position (APP) sensor 2 signal
335V reference (fuel tank pressure)
345V reference (A/C pressure)
365V reference (APP sensor)
37Intake air temperature (IAT) signal
38Intake air temperature (IAT) low reference
41Mass air flow (MAF) signal
47Ignition 1 voltage (key hot)
49HO2S low reference, bank 2 sensor 2
50Fuel pump relay control (primary)
51Fuel pump relay control (secondary)
52Starter enable relay control
565V reference (APP sensor)
58Low speed cooling fan relay
59Powertrain relay coil control (main relay)
61EVAP canister vent solenoid
63A/C compressor clutch relay
64HO2S heater low control, bank 2 sensor 2
65HO2S heater low control, bank 1 sensor 2
68Malfunction indicator lamp (MIL)
69HO2S signal, bank 2 sensor 2 (post-cat)
70Secondary fuel level sensor signal (1937)
71VSS high signal (manual trans)
72VSS low signal (manual trans)
73Power ground
5V ref
5V ref
M190-A-49 Peak Hold Injector 11
M190-A-33 Peak Hold Injector 4
M190-A-17 Low Side Injector 11
M190-A-45 Peak Hold Injector 5
M190-A-47 Low Side Injector 9
M190-A-32 Low Side Injector 10
M190-A-4 Low Side Injector 12
M190-A-51 Peak Hold Injector 8
M190-A-26 Peak Hold Injector 3
M190-A-2 Low Side Injector 2
M190-B-V Low Side Injector 2
M190-A-11 Peak Hold Injector 1
M190-C-37 Analogue Temperature Input 1
0V sensor
M190-C-51 Knock Input 1
M190-C-44 Knock Input 2
M190-C-43 Knock Input 3
M190-C-49 Knock Input 4
M190-A-42 Peak Hold Injector 9
M190-C-40 Universal Digital Input 5
0V sensor
0V sensor
M190-A-3 Low Side Injector 1
M190-B-U Low Side Injector 1
M190-A-12 Peak Hold Injector 2
M190-A-1 Low Side Injector 3
5V ref
5V ref
5V ref
M190-A-34 Analogue Voltage Input 13
0V sensor
0V sensor
0V sensor
M190-C-12 Analogue Voltage Input 7
M190-C-36 Analogue Voltage Input 2
M190-C-6 Analogue Voltage Input 8
0V sensor
M190-A-43 Peak Hold Injector 10
M190-C-11 Analogue Voltage Input 6
M190-C-32 Universal Digital Input 2
M190-C-28 Analogue Voltage Input 4
0V sensor
M190-C-18 Universal Digital Input 1
0V sensor
M190-C-16 Low Side Ignition 1
M190-C-3 Low Side Ignition 8
M190-C-9 Low Side Ignition 7
M190-C-8 Low Side Ignition 2
M190-C-4 Low Side Ignition 6
M190-C-5 Low Side Ignition 5
M190-C-1 Low Side Ignition 4
M190-C-2 Low Side Ignition 3
GND
GND
OEM-X2
Stock ECU being replaced
25V reference (crankshaft sensor)
35V reference (throttle body)
8EVAP canister purge solenoid
9Cylinder shutoff solenoid 3 (AFM)
10Cylinder shutoff solenoid 1 (AFM)
11Cylinder shutoff solenoid 4 (AFM)
12HO2S heater low control, bank 1 sensor 1
13HO2S heater low control, bank 2 sensor 1
14Cylinder shutoff solenoid 2 (AFM)
16Camshaft actuator solenoid (VVT)
17Injector 8
18Injector 5
19Injector 6
20Injector 1
21Engine coolant temperature (ECT) signal
22ECT low reference
26Knock sensor 1 signal A
27Knock sensor 1 signal B
29Knock sensor 2 signal A
30Knock sensor 2 signal B
32Generator field duty control
33Oil level switch signal
34Oil pressure low reference
35Throttle body low reference
37Injector 2
38Injector 3
39Injector 4
40Injector 7
415V reference (oil pressure)
435V reference (MAP)
445V reference (camshaft sensor)
50Engine oil pressure signal
52Camshaft actuator low reference
53MAP low reference
56HO2S low reference, bank 1 sensor 1
57HO2S signal, bank 1 sensor 1 (pre-cat)
58Manifold absolute pressure (MAP) signal
59HO2S signal, bank 2 sensor 1 (pre-cat)
60HO2S low reference, bank 2 sensor 1
61Charge indicator signal
63Throttle position sensor 2 signal
64Camshaft position signal (4x)
65Throttle position sensor 1 signal
66Camshaft position low reference
68Crankshaft position signal (58x)
69Crankshaft position low reference
70Ignition coil 1 control
71Ignition coil 8 control
72Ignition coil 7 control
73Ignition coil 2 control
74Ignition coil 6 control
75Ignition coil 5 control
76Ignition coil 4 control
77Ignition coil 3 control
78Coil low reference (odd bank)
79Coil low reference (even bank)
M190
M190-A
M190
1Low Side Injector 3
2Low Side Injector 2
3Low Side Injector 1
4Low Side Injector 12
5Low Side Injector 4
6Lambda Narrow Input 2
7Lambda Narrow Input 1
10Low Side Injector 8
11Peak Hold Injector 1
12Peak Hold Injector 2
13Analogue Voltage Input 11
14Digital Input 2
16Sensor 5.0V C3
17Low Side Injector 11
18Sensor 0V C1
19Sensor 0V C2
20Sensor 0V C3
21Digital Input 1
25Low Side Injector 7
26Peak Hold Injector 3
30Digital Input 3
32Low Side Injector 10
33Peak Hold Injector 4
34Analogue Voltage Input 13
35Analogue Voltage Input 12
36Peak Hold Injector 7
37Digital Input 4
38Battery Backup
40Low Side Injector 6
42Peak Hold Injector 9
43Peak Hold Injector 10
44Peak Hold Injector 6
45Peak Hold Injector 5
47Low Side Injector 9
48Low Side Injector 5
49Peak Hold Injector 11
51Peak Hold Injector 8
OEM-X2-40 Injector 7
OEM-X2-18 Injector 5
OEM-X2-37 Injector 2
OEM-X2-14 Cylinder shutoff solenoid 2 (AFM)
OEM-X1-59 Powertrain relay coil control (main relay)
OEM-X1-69 HO2S signal, bank 2 sensor 2 (post-cat)
OEM-X1-10 HO2S signal, bank 1 sensor 2 (post-cat)
OEM-X1-65 HO2S heater low control, bank 1 sensor 2
OEM-X2-20 Injector 1
OEM-X2-39 Injector 4
OEM-X1-24 Fuel tank pressure signal
OEM-X1-1 Park/Neutral signal (1786)
5V ref
OEM-X2-10 Cylinder shutoff solenoid 1 (AFM)
0V sensor
0V sensor
0V sensor
OEM-X1-2 4WD low signal (1694)
OEM-X1-64 HO2S heater low control, bank 2 sensor 2
OEM-X2-17 Injector 8
OEM-X1-3 Axle switch signal (1695)
OEM-X2-13 HO2S heater low control, bank 2 sensor 1
OEM-X2-9 Cylinder shutoff solenoid 3 (AFM)
OEM-X2-50 Engine oil pressure signal
OEM-X1-70 Secondary fuel level sensor signal (1937)
OEM-X1-68 Malfunction indicator lamp (MIL)
OEM-X1-9 Brake switch signal
Battery Backup
OEM-X1-58 Low speed cooling fan relay
OEM-X2-32 Generator field duty control
OEM-X2-61 Charge indicator signal
OEM-X1-61 EVAP canister vent solenoid
OEM-X2-11 Cylinder shutoff solenoid 4 (AFM)
OEM-X2-12 HO2S heater low control, bank 1 sensor 1
OEM-X1-51 Fuel pump relay control (secondary)
OEM-X2-8 EVAP canister purge solenoid
OEM-X2-16 Camshaft actuator solenoid (VVT)
M190-B
M190
aLow Side Injector 5
bLow Side Injector 3
cBattery Negative 6
GBattery Negative 1
HBattery Positive 1
JBattery Positive 2
KBattery Positive 3
LBattery Positive 4
SLow Side Injector 4
TLow Side Injector 6
ULow Side Injector 1
VLow Side Injector 2
WBattery Negative 2
XBattery Negative 3
YBattery Negative 4
ZBattery Negative 5
OEM-X1-52 Starter enable relay control
OEM-X1-50 Fuel pump relay control (primary)
GND
GND
Battery Positive 1
Battery Positive 2
Battery Positive 3
Battery Positive 4
OEM-X1-17 High speed cooling fan relay
OEM-X1-63 A/C compressor clutch relay
OEM-X2-38 Injector 3
OEM-X2-19 Injector 6
GND
GND
GND
GND
M190-C
M190
1Low Side Ignition 4
2Low Side Ignition 3
3Low Side Ignition 8
4Low Side Ignition 6
5Low Side Ignition 5
6Analogue Voltage Input 8
7Analogue Voltage Input 10
8Low Side Ignition 2
9Low Side Ignition 7
11Analogue Voltage Input 6
12Analogue Voltage Input 7
13Analogue Voltage Input 9
14Sensor 0V A1
15Sensor 0V A2
16Low Side Ignition 1
18Universal Digital Input 1
23Sensor 0V B1
24CAN Bus 1 High
25Universal Digital Input 3
27Universal Digital Input 4
28Analogue Voltage Input 4
29Analogue Voltage Input 5
30Sensor 0V B2
31CAN Bus 1 Low
32Universal Digital Input 2
35Analogue Voltage Input 3
36Analogue Voltage Input 2
37Analogue Temperature Input 1
39Analogue Temperature Input 2
40Universal Digital Input 5
42Analogue Voltage Input 1
43Knock Input 3
44Knock Input 2
49Knock Input 4
51Knock Input 1
OEM-X2-76 Ignition coil 4 control
OEM-X2-77 Ignition coil 3 control
OEM-X2-71 Ignition coil 8 control
OEM-X2-74 Ignition coil 6 control
OEM-X2-75 Ignition coil 5 control
OEM-X2-59 HO2S signal, bank 2 sensor 1 (pre-cat)
OEM-X1-16 Fuel level sensor signal, primary (1589)
OEM-X2-73 Ignition coil 2 control
OEM-X2-72 Ignition coil 7 control
OEM-X2-63 Throttle position sensor 2 signal
OEM-X2-57 HO2S signal, bank 1 sensor 1 (pre-cat)
OEM-X1-12 A/C refrigerant pressure signal
0V sensor
0V sensor
OEM-X2-70 Ignition coil 1 control
OEM-X2-68 Crankshaft position signal (58x)
0V sensor
OEM-X1-28 High-speed GMLAN serial data bus + (2500)
OEM-X1-71 VSS high signal (manual trans)
OEM-X1-72 VSS low signal (manual trans)
OEM-X2-65 Throttle position sensor 1 signal
OEM-X1-32 Accelerator pedal position (APP) sensor 2 signal
0V sensor
OEM-X1-27 High-speed GMLAN serial data bus - (2501)
OEM-X2-64 Camshaft position signal (4x)
OEM-X1-29 Accelerator pedal position (APP) sensor 1 signal
OEM-X2-58 Manifold absolute pressure (MAP) signal
OEM-X2-21 Engine coolant temperature (ECT) signal
OEM-X1-37 Intake air temperature (IAT) signal
OEM-X2-33 Oil level switch signal
OEM-X1-41 Mass air flow (MAF) signal
OEM-X2-29 Knock sensor 2 signal A
OEM-X2-27 Knock sensor 1 signal B
OEM-X2-30 Knock sensor 2 signal B
OEM-X2-26 Knock sensor 1 signal A
SP-14V · 7 pins
SP-5V1 · 11 pins
SP-0V · 24 pins
SP-GND · 10 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.