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
GND
GND
MAXXECUSTREE-C1-D1 WBO2 Heater-
ECM power (J271 relay feed)
MAXXECUSTREE-C1-A4 GPO 8/TACHO
MAXXECUSTREE-C1-K4 DIN 2
0V sensor
MAXXECUSTREE-C1-G2 TPS/AIN
0V sensor
0V sensor
MAXXECUSTREE-C1-G3 WBO2 IP
MAXXECUSTREE-C1-J3 AIN 3 (0-5V)
MAXXECUSTREE-C1-K3 DIN 1
MAXXECUSTREE-C1-E2 CAN L
MAXXECUSTREE-C1-E1 CAN H
MAXXECUSTREE-C1-D4 GPO 3
MAXXECUSTREE-C1-B4 GPO 1
MAXXECUSTREE-C1-C4 GPO 2
MAXXECUSTREE-C1-F4 WBO2 VS
5V ref
5V ref
MAXXECUSTREE-C1-M3 INJ 5
MAXXECUSTREE-C1-H3 TRIGGER
5V ref
MAXXECUSTREE-C1-F2 IAT
MAXXECUSTREE-C1-H4 HOME
MAXXECUSTREE-C1-M2 INJ 4
MAXXECUSTREE-C1-K2 INJ 2
0V sensor
0V sensor
MAXXECUSTREE-C1-F1 CLT
MAXXECUSTREE-C1-B3 IGN 4
MAXXECUSTREE-C1-A3 IGN 2
MAXXECUSTREE-C1-K1 INJ 1
MAXXECUSTREE-C1-M1 INJ 3
5V ref
5V ref
MAXXECUSTREE-C1-J4 AIN 4 (0-5V)
MAXXECUSTREE-C1-A2 IGN 1
MAXXECUSTREE-C1-B2 IGN 3
MAXXECUSTREE-C1-L3 INJ 6
0V sensor
ECM + coil power (J271 relay feed)
OEM-T121
Stock ECU being replaced
1ECU ground
2ECU ground
5Wideband lambda heater (Z19)
21ECM power (J271 relay feed)
25V144 Evaporative diagnostic pump (Pin 2)
28Alternator DF terminal (charge warning)
29MAF sensor ground (G70)
33Accelerator pedal position 1 (G79)
34Accelerator pedal position 1 ground (G79)
36Accelerator pedal position 2 ground (G185)
51Wideband lambda pump (G39)
53MAF sensor signal (G70)
54Road speed signal (VSS)
58CAN bus low
60CAN bus high
63Post-cat lambda heater (Z29)
65Fuel pump relay control
66Secondary-air pump relay (J299)
70Wideband lambda Nernst signal (G39)
72Accelerator pedal position 1 5V supply (G79)
73Accelerator pedal position 2 5V supply (G185)
80V144 Evap Diagnostic Pump (Pin 1)
82Crank position sensor (G28)
83Throttle position sensor 5V supply (G187/G188)
85Intake air temperature (G42)
86Camshaft position sensor (G40)
88Injector 4 (N33)
89Injector 2 (N31)
90Crank position sensor ground (G28)
91Throttle position sensor ground (G187/G188)
93Engine coolant temperature (G62)
94Ignition coil 4 (N163)
95Ignition coil 2 (N128)
96Injector 1 (N30)
97Injector 3 (N32)
98Cam + boost sensor 5V supply (G40/G31)
99Knock sensor 5V supply (G61/G66)
101Boost pressure sensor (G31)
102Ignition coil 1 (N127)
103Ignition coil 3 (N158)
104Boost control solenoid (N75)
108Sensor ground
121ECM + coil power (J271 relay feed)
MAXXECUSTREE
MAXXECUSTREE-C1
MAXXECUSTREE
A2IGN 1
A3IGN 2
A4GPO 8/TACHO
B2IGN 3
B3IGN 4
B4GPO 1
C4GPO 2
D1WBO2 Heater-
D4GPO 3
E1CAN H
E2CAN L
F1CLT
F2IAT
F4WBO2 VS
G1+5V sensor supply
G2TPS/AIN
G3WBO2 IP
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-T121-102 Ignition coil 1 (N127)
OEM-T121-95 Ignition coil 2 (N128)
OEM-T121-25 V144 Evaporative diagnostic pump (Pin 2)
OEM-T121-103 Ignition coil 3 (N158)
OEM-T121-94 Ignition coil 4 (N163)
OEM-T121-65 Fuel pump relay control
OEM-T121-66 Secondary-air pump relay (J299)
OEM-T121-5 Wideband lambda heater (Z19)
OEM-T121-63 Post-cat lambda heater (Z29)
OEM-T121-60 CAN bus high
OEM-T121-58 CAN bus low
OEM-T121-93 Engine coolant temperature (G62)
OEM-T121-85 Intake air temperature (G42)
OEM-T121-70 Wideband lambda Nernst signal (G39)
5V ref
OEM-T121-33 Accelerator pedal position 1 (G79)
OEM-T121-51 Wideband lambda pump (G39)
0V sensor
0V sensor
OEM-T121-82 Crank position sensor (G28)
OEM-T121-86 Camshaft position sensor (G40)
OEM-T121-53 MAF sensor signal (G70)
OEM-T121-101 Boost pressure sensor (G31)
OEM-T121-96 Injector 1 (N30)
OEM-T121-89 Injector 2 (N31)
OEM-T121-54 Road speed signal (VSS)
OEM-T121-28 Alternator DF terminal (charge warning)
OEM-T121-104 Boost control solenoid (N75)
GND
OEM-T121-97 Injector 3 (N32)
OEM-T121-88 Injector 4 (N33)
OEM-T121-80 V144 Evap Diagnostic Pump (Pin 1)
+12V ECU power supply
SP-GND · 4 pins
SP-0V · 9 pins
SP-5V1 · 7 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.
48 / 48 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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