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
MAXXECUSPORT-C1-E4 AIN 8 (0-5V)
0V sensor
0V sensor
MAXXECUSPORT-C1-D4 GPO 3
Ignition 1 voltage (key hot)
0V sensor
MAXXECUSPORT-C1-E2 CAN L
MAXXECUSPORT-C1-E1 CAN H
MAXXECUSPORT-C1-G2 TPS/AIN
0V sensor
0V sensor
MAXXECUSPORT-C1-D2 AIN 6 (0-5V)
5V ref
5V ref
5V ref
MAXXECUSPORT-C1-F2 IAT
0V sensor
MAXXECUSPORT-C1-J3 AIN 3 (0-5V)
Ignition 1 voltage (key hot)
0V sensor
MAXXECUSPORT-C1-B4 GPO 1
MAXXECUSPORT-C1-A1 GPO 4
MAXXECUSPORT-C1-B1 GPO 5
5V ref
MAXXECUSPORT-C1-A4 GPO 8/TACHO
MAXXECUSPORT-C1-C4 GPO 2
MAXXECUSPORT-C1-D1 WBO2 Heater-
MAXXECUSPORT-C1-K3 DIN 1
MAXXECUSPORT-C1-K4 DIN 2
GND
OEM-X1
Stock ECU being replaced
10HO2S signal, bank 1 sensor 2 (post-cat)
11HO2S low reference, bank 1 sensor 2
13A/C refrigerant pressure sensor low reference (5514)
17High speed cooling fan relay
19Ignition 1 voltage (key hot)
23APP sensor low reference
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)
63A/C compressor clutch relay
71VSS high signal (manual trans)
72VSS low signal (manual trans)
73Power ground
5V ref
5V ref
MAXXECUSPORT-C1-K2 INJ 2
MAXXECUSPORT-C1-M3 INJ 5
MAXXECUSPORT-C1-L3 INJ 6
MAXXECUSPORT-C1-K1 INJ 1
MAXXECUSPORT-C1-F1 CLT
0V sensor
0V sensor
0V sensor
MAXXECUSPORT-C1-K2 INJ 2
MAXXECUSPORT-C1-M1 INJ 3
MAXXECUSPORT-C1-M2 INJ 4
MAXXECUSPORT-C1-K1 INJ 1
5V ref
5V ref
5V ref
0V sensor
0V sensor
0V sensor
MAXXECUSPORT-C1-J4 AIN 4 (0-5V)
0V sensor
MAXXECUSPORT-C1-D3 AIN 7 (0-5V)
MAXXECUSPORT-C1-H4 HOME
MAXXECUSPORT-C1-C1 AIN 5 (0-5V)
0V sensor
MAXXECUSPORT-C1-H3 TRIGGER
0V sensor
MAXXECUSPORT-C1-A2 IGN 1
MAXXECUSPORT-C1-A3 IGN 2
MAXXECUSPORT-C1-C3 IGN 6
MAXXECUSPORT-C1-C2 IGN 5
MAXXECUSPORT-C1-B3 IGN 4
MAXXECUSPORT-C1-B2 IGN 3
GND
GND
OEM-X2
Stock ECU being replaced
25V reference (crankshaft sensor)
35V reference (throttle body)
17Injector 8
18Injector 5
19Injector 6
20Injector 1
21Engine coolant temperature (ECT) signal
22ECT low reference
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)
52Camshaft actuator low reference
53MAP low reference
56HO2S low reference, bank 1 sensor 1
58Manifold absolute pressure (MAP) signal
60HO2S low reference, bank 2 sensor 1
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
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)
MAXXECUSPORT
MAXXECUSPORT-C1
MAXXECUSPORT
A1GPO 4
A2IGN 1
A3IGN 2
A4GPO 8/TACHO
B1GPO 5
B2IGN 3
B3IGN 4
B4GPO 1
C1AIN 5 (0-5V)
C2IGN 5
C3IGN 6
C4GPO 2
D1WBO2 Heater-
D2AIN 6 (0-5V)
D3AIN 7 (0-5V)
D4GPO 3
E1CAN H
E2CAN L
E4AIN 8 (0-5V)
F1CLT
F2IAT
G1+5V sensor supply
G2TPS/AIN
H1Sensor GND
H2Trigger GND
H3TRIGGER
H4HOME
J3AIN 3 (0-5V)
J4AIN 4 (0-5V)
K1INJ 1
K2INJ 2
K3DIN 1
K4DIN 2
L3INJ 6
L4Engine GND
M1INJ 3
M2INJ 4
M3INJ 5
M4+12V ECU power supply
OEM-X1-51 Fuel pump relay control (secondary)
OEM-X2-70 Ignition coil 1 control
OEM-X2-73 Ignition coil 2 control
OEM-X1-58 Low speed cooling fan relay
OEM-X1-52 Starter enable relay control
OEM-X2-77 Ignition coil 3 control
OEM-X2-76 Ignition coil 4 control
OEM-X1-50 Fuel pump relay control (primary)
OEM-X2-65 Throttle position sensor 1 signal
OEM-X2-75 Ignition coil 5 control
OEM-X2-74 Ignition coil 6 control
OEM-X1-59 Powertrain relay coil control (main relay)
OEM-X1-63 A/C compressor clutch relay
OEM-X1-32 Accelerator pedal position (APP) sensor 2 signal
OEM-X2-63 Throttle position sensor 2 signal
OEM-X1-17 High speed cooling fan relay
OEM-X1-28 High-speed GMLAN serial data bus + (2500)
OEM-X1-27 High-speed GMLAN serial data bus - (2501)
OEM-X1-10 HO2S signal, bank 1 sensor 2 (post-cat)
OEM-X2-21 Engine coolant temperature (ECT) signal
OEM-X1-37 Intake air temperature (IAT) signal
5V ref
OEM-X1-29 Accelerator pedal position (APP) sensor 1 signal
0V sensor
0V sensor
OEM-X2-68 Crankshaft position signal (58x)
OEM-X2-64 Camshaft position signal (4x)
OEM-X1-41 Mass air flow (MAF) signal
OEM-X2-58 Manifold absolute pressure (MAP) signal
Injector 1 · 2 pins
Injector 8 · 2 pins
OEM-X1-71 VSS high signal (manual trans)
OEM-X1-72 VSS low signal (manual trans)
OEM-X2-19 Injector 6
GND
OEM-X2-38 Injector 3
OEM-X2-39 Injector 4
OEM-X2-18 Injector 5
+12V ECU power supply
SP-14V · 4 pins
SP-5V1 · 11 pins
SP-0V · 19 pins
SP-GND · 5 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.