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.
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Stock ECU being replaced
MAXXECUPRO-C1-K3 DIN/VR 1
MAXXECUPRO-C1-J4 AIN 4 (0-5V)
MAXXECUPRO-C1-B4 GPO 1
MAXXECUPRO-C4-F2 Knock 1
0V sensor
0V sensor
MAXXECUPRO-C3-C1 WBO2 2 Shield (via SP-SHD)
MAXXECUPRO-C1-F2 IAT
MAXXECUPRO-C1-F1 CLT
MAXXECUPRO-C3-A3 DIN 6 (SWITCH)
MAXXECUPRO-C1-K1 INJ 1
GND
ECU power (control-unit relay)
MAXXECUPRO-C1-K4 DIN/VR 2
5V ref
MAXXECUPRO-C1-H4 HOME
GND
MAXXECUPRO-C1-J3 AIN 3 (0-5V)
MAXXECUPRO-C1-C4 GPO 2
MAXXECUPRO-C1-D4 GPO 3
MAXXECUPRO-C1-A2 IGN 1
OEM-A
Stock ECU being replaced
1Starter signal (term 50)
2Oxygen (lambda) sensor signal
3Fuel pump relay control
4Knock sensor signal
5Knock sensor return
6Sensor ground (CTS/Hall/AFM/throttle)
7Knock sensor shield
9Intake air temperature sensor
10Coolant temperature sensor
11Idle/WOT throttle switch
12Injector driver (batch, all 4)
13Ground
14ECU power (control-unit relay)
16A/C compressor signal
17AFM potentiometer supply
18Hall sender signal (engine speed)
19Ground
21AFM signal
22Idle stabilizer valve coil 1
23Idle stabilizer valve coil 2
25Ignition timing signal to TCI
MAXXECUPRO
MAXXECUPRO-C1
MAXXECUPRO
A2IGN 1
B4GPO 1
C4GPO 2
D4GPO 3
F1CLT
F2IAT
G1+5V sensor supply
H1Sensor GND
H2Trigger GND
H4HOME
J3AIN 3 (0-5V)
J4AIN 4 (0-5V)
K1INJ 1
K3DIN/VR 1
K4DIN/VR 2
L4Engine GND
M4+12V ECU power supply
OEM-A-25 Ignition timing signal to TCI
OEM-A-3 Fuel pump relay control
OEM-A-22 Idle stabilizer valve coil 1
OEM-A-23 Idle stabilizer valve coil 2
OEM-A-10 Coolant temperature sensor
OEM-A-9 Intake air temperature sensor
5V ref
0V sensor
0V sensor
OEM-A-18 Hall sender signal (engine speed)
OEM-A-21 AFM signal
OEM-A-2 Oxygen (lambda) sensor signal
OEM-A-12 Injector driver (batch, all 4)
OEM-A-1 Starter signal (term 50)
OEM-A-16 A/C compressor signal
GND
+12V ECU power supply
MAXXECUPRO-C2
MAXXECUPRO
H1Engine ground 3
H2Engine ground 3
H3Engine ground 3
GND
GND
GND
MAXXECUPRO-C3
MAXXECUPRO
A3DIN 6 (SWITCH)
C1WBO2 2 Shield
J2SENSOR GND
J3SENSOR GND
L4ENGINE GROUND 2
M412V ECU 2
OEM-A-11 Idle/WOT throttle switch
OEM-A-7 Knock sensor shield (via SP-SHD)
0V sensor
0V sensor
GND
12V ECU 2
MAXXECUPRO-C4
MAXXECUPRO
F2Knock 1
OEM-A-4 Knock sensor signal
SP-0V · 7 pins
SP-SHD · 3 pins
SP-GND · 8 pins
SP-14V · 4 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.