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
ME221-C1-73 LOW SIDE 1
ME221-C1-12 LOW SIDE 2
ME221-C1-7 DIG_IN 2
ME221-C1-69 LOW SIDE 5
ME221-C1-74 LOW SIDE 3
ME221-C1-6 DIG_IN 1
ME221-C1-44 LOW SIDE 4
OEM-1
Stock ECU being replaced
ACooling fan relay (low-side)
BA/C condenser fan relay
CStarter input (12V while cranking)
ECheck engine light (MIL)
GA/C clutch relay
MVehicle speed sensor (VSS)
UFuel pump relay (low-side)
ME221-C1-26 ANA VOLT 1
ME221-C1-56 ANA VOLT 2
ME221-C1-86 ANA TEMP 1
ME221-C1-17 ANA VOLT 3
5V ref
ME221-C1-57 ANA TEMP 2
ME221-C1-16 LSU HEATER -VE
ME221-C1-18 ANA VOLT 4
0V sensor
OEM-3
Stock ECU being replaced
BMAF sensor input
FThrottle position (TPS)
GEngine coolant temp (CLT)
HEGR boost sensor
I+5V sensor reference
KIntake air temp (IAT)
MFront O2 heater control
NEGR boost sensor (2nd channel)
OSensor ground
GND
ECU power +12V (main relay)
GND
GND
ME221-C1-80 CRANK VR+
ME221-C1-23 CAM A VR-
ME221-C1-22 CAM A VR+
0V sensor
ME221-C1-39 LOW SIDE 6
GND
ME221-C1-79 TACHOMETER
ME221-C1-32 COIL 1
ME221-C1-37 LOW SIDE RELAY 11
ME221-C1-42 LOW SIDE RELAY 12
ME221-C1-72 LOW SIDE RELAY 13
ME221-C1-31 COIL 2
ME221-C1-43 LOW SIDE RELAY 14
ME221-C1-63 INJECTOR 1
ME221-C1-4 INJECTOR 2
ME221-C1-33 INJECTOR 3
ME221-C1-3 INJECTOR 4
OEM-4
Stock ECU being replaced
AChassis ground
BECU power +12V (main relay)
CChassis ground
DChassis ground
ECrank position (CKP) sensor
FCAS SGT (cam trigger)
GCAS SGC (cam sync)
HCrank pickup timing ground (CKP gnd)
JPRC solenoid (FPR control)
KChassis ground
LTachometer output
NIgnition coil trigger (cyl 1&4)
OEGR vent solenoid
PEGR vacuum solenoid
QIdle air control (IAC) valve
RIgnition coil trigger (cyl 2&3)
TEVAP purge solenoid
UInjector 1 (cyl 1)
VInjector 2 (cyl 2)
WInjector 3 (cyl 3)
XInjector 4 (cyl 4)
ME221
ME221-C1
ME221
3INJECTOR 4
4INJECTOR 2
6DIG_IN 1
7DIG_IN 2
10GROUND CHASSIS
12LOW SIDE 2
15IGN +12V
16LSU HEATER -VE
17ANA VOLT 3
18ANA VOLT 4
22CAM A VR+
23CAM A VR-
26ANA VOLT 1
31COIL 2
32COIL 1
33INJECTOR 3
37LOW SIDE RELAY 11
39LOW SIDE 6
42LOW SIDE RELAY 12
43LOW SIDE RELAY 14
44LOW SIDE 4
455V REF
52SENSORS GROUND
56ANA VOLT 2
57ANA TEMP 2
61GROUND
63INJECTOR 1
64VBAT
69LOW SIDE 5
72LOW SIDE RELAY 13
73LOW SIDE 1
74LOW SIDE 3
79TACHOMETER
80CRANK VR+
84Sensor Ground
86ANA TEMP 1
89GROUND
90GROUND
OEM-4-X Injector 4 (cyl 4)
OEM-4-V Injector 2 (cyl 2)
OEM-1-M Vehicle speed sensor (VSS)
OEM-1-C Starter input (12V while cranking)
GND
OEM-1-B A/C condenser fan relay
IGN +12V
OEM-3-M Front O2 heater control
OEM-3-H EGR boost sensor
OEM-3-N EGR boost sensor (2nd channel)
OEM-4-G CAS SGC (cam sync)
OEM-4-F CAS SGT (cam trigger)
OEM-3-B MAF sensor input
OEM-4-R Ignition coil trigger (cyl 2&3)
OEM-4-N Ignition coil trigger (cyl 1&4)
OEM-4-W Injector 3 (cyl 3)
OEM-4-O EGR vent solenoid
OEM-4-J PRC solenoid (FPR control)
OEM-4-P EGR vacuum solenoid
OEM-4-T EVAP purge solenoid
OEM-1-U Fuel pump relay (low-side)
5V ref
0V sensor
OEM-3-F Throttle position (TPS)
OEM-3-K Intake air temp (IAT)
GND
OEM-4-U Injector 1 (cyl 1)
VBAT
OEM-1-E Check engine light (MIL)
OEM-4-Q Idle air control (IAC) valve
OEM-1-A Cooling fan relay (low-side)
OEM-1-G A/C clutch relay
OEM-4-L Tachometer output
OEM-4-E Crank position (CKP) sensor
0V sensor
OEM-3-G Engine coolant temp (CLT)
GND
GND
SP-14V · 4 pins
SP-GND · 9 pins
SP-0V · 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.
45 / 45 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
| Wire | From | To | Signal | Gauge | Colour | Stripe | Ident | Flags | |
|---|---|---|---|---|---|---|---|---|---|
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — |