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
Constant +12V
ECU power +14V (main relay)
MS3PROULTIMA-A-32 Digital switched in 1
MS3PROULTIMA-C-1 PWM out 5
MS3PROULTIMA-B-13 Spark out G
MS3PROULTIMA-B-14 Spark out E
MS3PROULTIMA-A-28 Fuel pump relay out
MS3PROULTIMA-C-3 Digital out 2
MS3PROULTIMA-B-28 Digital frequency in 1
MS3PROULTIMA-B-20 Digital switched in 2
MS3PROULTIMA-B-29 Digital switched in 3
MS3PROULTIMA-C-11 Digital switched in 4
MS3PROULTIMA-A-14 PWM / Idle Out 1
MS3PROULTIMA-C-10 Digital switched in 5
OEM-1
Stock ECU being replaced
AConstant +12V
BECU power +14V (main relay)
CStart signal
EMalfunction indicator lamp (MIL)
GIgnition 1 (coils 1+4, wasted spark)
HIgnition 2 (coils 2+3, wasted spark)
JA/C relay
LCoolant fan relay
MVehicle speed
OStop light switch
PPower steering pressure switch
QA/C request
RCooling fan relay
VNeutral/clutch switch
GND
GND
0V sensor
0V sensor
MS3PROULTIMA-A-6 CKP+
0V sensor
MS3PROULTIMA-A-26 CMP+
MS3PROULTIMA-A-24 Tach out
5V ref
MS3PROULTIMA-A-30 PWM out 3
MS3PROULTIMA-A-9 TPS in
MS3PROULTIMA-A-25 O2 in
MS3PROULTIMA-A-19 Analog in 1
MS3PROULTIMA-A-10 MAT in
MS3PROULTIMA-A-11 CLT in
MS3PROULTIMA-A-1 High current out 1
MS3PROULTIMA-C-4 Digital out 1
MS3PROULTIMA-A-29 PWM out 2
MS3PROULTIMA-A-3 Injector out J
MS3PROULTIMA-A-4 Injector out I
MS3PROULTIMA-C-2 PWM out 4
MS3PROULTIMA-A-2 High current out 2
MS3PROULTIMA-B-1 Injector out A
MS3PROULTIMA-B-10 Injector out F
OEM-2
Stock ECU being replaced
APower ground
BPower ground
CSensor ground (E2)
DSensor ground (E2)
ECrank position (CAS NE)
FMAF ground
GCam position (CAS G)
ITachometer output
K+5V sensor supply
LRear defroster relay
MThrottle position (TPS)
NO2 sensor
OMass air flow (MAF)
PIntake air temperature (IAT)
QCoolant temperature (ECT)
RPRC solenoid (fuel pressure regulator)
SCondenser fan relay
TFuel pump relay
UInjector 1
VInjector 2
WISC solenoid
XEvap purge solenoid
YInjector 3
ZInjector 4
MS3PROULTIMA
MS3PROULTIMA-A
MS3PROULTIMA
1High current out 1
2High current out 2
3Injector out J
4Injector out I
6CKP+
85V+ VREF out 1
9TPS in
10MAT in
11CLT in
13Power ground
14PWM / Idle Out 1
15CKP−
16Logic ground
18Sensor return
19Analog in 1
24Tach out
25O2 in
26CMP+
27CMP−
28Fuel pump relay out
29PWM out 2
30PWM out 3
32Digital switched in 1
3512V+ switched power in
OEM-2-R PRC solenoid (fuel pressure regulator)
OEM-2-X Evap purge solenoid
OEM-2-U Injector 1
OEM-2-V Injector 2
OEM-2-E Crank position (CAS NE)
5V ref
OEM-2-M Throttle position (TPS)
OEM-2-P Intake air temperature (IAT)
OEM-2-Q Coolant temperature (ECT)
GND
OEM-1-R Cooling fan relay
SP-0V · 3 pins
0V sensor
0V sensor
OEM-2-O Mass air flow (MAF)
OEM-2-I Tachometer output
OEM-2-N O2 sensor
OEM-2-G Cam position (CAS G)
SP-0V · 3 pins
OEM-1-J A/C relay
OEM-2-T Fuel pump relay
OEM-2-L Rear defroster relay
OEM-1-C Start signal
12V+ switched power in
MS3PROULTIMA-B
MS3PROULTIMA
1Injector out A
3Ground
5Ground
7Ground
9Ground
10Injector out F
13Spark out G
14Spark out E
18Ground
20Digital switched in 2
28Digital frequency in 1
29Digital switched in 3
OEM-2-Y Injector 3
GND
GND
GND
GND
OEM-2-Z Injector 4
OEM-1-G Ignition 1 (coils 1+4, wasted spark)
OEM-1-H Ignition 2 (coils 2+3, wasted spark)
GND
OEM-1-O Stop light switch
OEM-1-M Vehicle speed
OEM-1-P Power steering pressure switch
MS3PROULTIMA-C
MS3PROULTIMA
1PWM out 5
2PWM out 4
3Digital out 2
4Digital out 1
10Digital switched in 5
11Digital switched in 4
17Sensor return
18Sensor return
19Sensor return
20Sensor return
21Sensor return
23Keep alive power
OEM-1-E Malfunction indicator lamp (MIL)
OEM-2-W ISC solenoid
OEM-1-L Coolant fan relay
OEM-2-S Condenser fan relay
OEM-1-V Neutral/clutch switch
OEM-1-Q A/C request
0V sensor
0V sensor
0V sensor
0V sensor
0V sensor
Keep alive power
SP-14V · 3 pins
SP-GND · 9 pins
SP-0V · 13 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.
54 / 54 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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