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

ME442-C1-73 LOW SIDE 1

ME442-C1-12 LOW SIDE 2

ME442-C1-7 DIG_IN 2

ME442-C1-69 LOW SIDE 5

ME442-C1-74 LOW SIDE 3

ME442-C1-8 DIG_IN 3

ME442-C1-5 DIG_IN 4

ME442-C1-6 DIG_IN 1

ME442-C1-62 DIG_IN 5

ME442-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

KA/C pressure switch (A/C request)

LClutch switch

MVehicle speed sensor (VSS)

QBrake switch

UFuel pump relay (low-side)

ME442-C1-26 ANA VOLT 1

ME442-C1-87 ANA VOLT 5

ME442-C1-78 ANA VOLT 6

ME442-C1-56 ANA VOLT 2

ME442-C1-86 ANA TEMP 1

ME442-C1-17 ANA VOLT 3

5V ref

ME442-C1-48 ANA VOLT 7

ME442-C1-57 ANA TEMP 2

ME442-C1-34 DIG_IN 6

ME442-C1-16 LSU HEATER -VE

ME442-C1-18 ANA VOLT 4

0V sensor

OEM-3

Stock ECU being replaced

BMAF sensor input

CFront O2 sensor input

DRear O2 sensor input

FThrottle position (TPS)

GEngine coolant temp (CLT)

HEGR boost sensor

I+5V sensor reference

JEGR valve position sensor

KIntake air temp (IAT)

LIdle switch (closed throttle)

MFront O2 heater control

NEGR boost sensor (2nd channel)

OSensor ground

GND

ECU power +12V (main relay)

GND

ME442-C1-80 CRANK VR+

ME442-C1-23 CAM A VR-

ME442-C1-22 CAM A VR+

0V sensor

ME442-C1-39 LOW SIDE 6

GND

ME442-C1-79 TACHOMETER

ME442-C1-32 COIL 1

ME442-C1-37 LOW SIDE RELAY 11

ME442-C1-42 LOW SIDE RELAY 12

ME442-C1-72 LOW SIDE RELAY 13

ME442-C1-31 COIL 2

ME442-C1-43 LOW SIDE RELAY 14

ME442-C1-63 INJECTOR 1

ME442-C1-4 INJECTOR 2

ME442-C1-33 INJECTOR 3

ME442-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)

ME442

ME442-C1

ME442

3INJECTOR 4

4INJECTOR 2

5DIG_IN 4

6DIG_IN 1

7DIG_IN 2

8DIG_IN 3

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

34DIG_IN 6

37LOW SIDE RELAY 11

39LOW SIDE 6

42LOW SIDE RELAY 12

43LOW SIDE RELAY 14

44LOW SIDE 4

455V REF

48ANA VOLT 7

52SENSORS GROUND

56ANA VOLT 2

57ANA TEMP 2

61GROUND

62DIG_IN 5

63INJECTOR 1

64VBAT

69LOW SIDE 5

72LOW SIDE RELAY 13

73LOW SIDE 1

74LOW SIDE 3

78ANA VOLT 6

79TACHOMETER

80CRANK VR+

84Sensor Ground

86ANA TEMP 1

87ANA VOLT 5

89GROUND

90GROUND

OEM-4-X Injector 4 (cyl 4)

OEM-4-V Injector 2 (cyl 2)

OEM-1-L Clutch switch

OEM-1-M Vehicle speed sensor (VSS)

OEM-1-C Starter input (12V while cranking)

OEM-1-K A/C pressure switch (A/C request)

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-3-L Idle switch (closed throttle)

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

OEM-3-J EGR valve position sensor

0V sensor

OEM-3-F Throttle position (TPS)

OEM-3-K Intake air temp (IAT)

GND

OEM-1-Q Brake switch

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-3-D Rear O2 sensor input

OEM-4-L Tachometer output

OEM-4-E Crank position (CKP) sensor

0V sensor

OEM-3-G Engine coolant temp (CLT)

OEM-3-C Front O2 sensor input

GND

SP-14V · 4 pins

SP-GND · 9 pins

SP-0V · 5 pins