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
EMUPRO16-B-15 +12V switched
EMUPRO16-B-3 Auxiliary 3 (WBO heater)
EMUPRO16-D-19 Auxiliary 14
ECM power (J271 relay feed)
EMUPRO16-C-1 Auxiliary 10
EMUPRO16-B-5 Auxiliary 5
EMUPRO16-A-14 Digital 4
0V sensor
EMUPRO16-C-18 Analog 2
0V sensor
EMUPRO16-C-11 Analog 3
0V sensor
EMUPRO16-D-26 Auxiliary 15
EMUPRO16-A-23 Digital 7
EMUPRO16-A-15 Digital 8
EMUPRO16-D-11 Digital 9 / Analog 19
EMUPRO16-D-12 Digital 10 / Analog 20
EMUPRO16-C-2 Auxiliary 11
EMUPRO16-C-3 Auxiliary 12
EMUPRO16-A-16 Digital 6 (turbo speed)
EMUPRO16-B-20 WBO 1 IP (LSU 4.9)
EMUPRO16-B-24 WBO 2 IP (LSU 4.9)
EMUPRO16-C-31 Precision analog 1
EMUPRO16-A-24 Digital 5 (turbo speed)
EMUPRO16-C-20 Analog 6
EMUPRO16-D-15 Precision analog 6
EMUPRO16-C-4 Analog 7
EMUPRO16-A-32 CAN 1 low (PC comm)
EMUPRO16-A-31 CAN 1 high (PC comm)
EMUPRO16-B-4 Auxiliary 4 (WBO heater)
EMUPRO16-D-13 Auxiliary 13
EMUPRO16-B-1 Auxiliary 1 (WBO heater)
EMUPRO16-B-2 Auxiliary 2 (WBO heater)
EMUPRO16-D-22 Precision analog 7
EMUPRO16-C-34 Precision analog 4
EMUPRO16-C-12 Analog 5
EMUPRO16-B-21 WBO 1 VS (LSU 4.9)
EMUPRO16-B-25 WBO 2 VS (LSU 4.9)
5V ref
5V ref
EMUPRO16-C-13 Analog 8
EMUPRO16-D-16 Precision analog 8
EMUPRO16-B-6 Auxiliary 6
EMUPRO16-A-21 Digital 1 (crank)
5V ref
EMUPRO16-C-32 Precision analog 2
EMUPRO16-D-21 Precision analog 5
EMUPRO16-A-13 Digital 2 (cam)
EMUPRO16-A-5 Injector 4
EMUPRO16-A-3 Injector 2
0V sensor
0V sensor
EMUPRO16-C-33 Precision analog 3
EMUPRO16-C-19 Analog 4
EMUPRO16-A-27 Ignition 4
EMUPRO16-A-29 Ignition 2
EMUPRO16-A-2 Injector 1
EMUPRO16-A-4 Injector 3
5V ref
5V ref
EMUPRO16-C-10 Analog 1 (MAP)
EMUPRO16-A-30 Ignition 1
EMUPRO16-A-28 Ignition 3
EMUPRO16-B-7 Auxiliary 7
EMUPRO16-B-13 Auxiliary 8
EMUPRO16-B-16 Knock sensor 1
EMUPRO16-B-17 Knock sensor 2
0V sensor
EMUPRO16-A-25 Auxiliary 9
EMUPRO16-C-25 H-bridge 1B
EMUPRO16-C-6 H-bridge 1A
ECM + coil power (J271 relay feed)
OEM-T121
Stock ECU being replaced
1ECU ground
2ECU ground
3Ignition switch +12V (term 15)
5Wideband lambda heater (Z19)
9Secondary-air injection valve (N112)
21ECM power (J271 relay feed)
22Brake vacuum pump (V192)
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)
35Accelerator pedal position 2 (G185)
36Accelerator pedal position 2 ground (G185)
37Engine speed signal (tacho to cluster)
38Cruise control switch (E45)
39Clutch pedal switch (F36)
40A/C signal
41A/C signal
47Check engine light (MIL)
48EPC warning light
49Power steering pressure switch (F88)
51Wideband lambda pump (G39)
52Wideband lambda pump (G39)
53MAF sensor signal (G70)
54Road speed signal (VSS)
55Brake pedal switch (F)
56Brake pedal switch (F)
57Cruise control switch (E45)
58CAN bus low
60CAN bus high
63Post-cat lambda heater (Z29)
64EVAP canister valve (N80)
65Fuel pump relay control
66Secondary-air pump relay (J299)
67Crash sensor signal
68Post-cat lambda signal (G130)
69Post-cat lambda signal (G130)
70Wideband lambda Nernst signal (G39)
71Wideband lambda Nernst signal (G39)
72Accelerator pedal position 1 5V supply (G79)
73Accelerator pedal position 2 5V supply (G185)
75Cruise control switch (E45)
76Cruise control switch (E45)
80V144 Evap Diagnostic Pump (Pin 1)
82Crank position sensor (G28)
83Throttle position sensor 5V supply (G187/G188)
84Throttle position sensor 1 (G187)
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)
92Throttle position sensor 2 (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)
105Diverter valve (N249)
106Knock sensor 1 (G61)
107Knock sensor 2 (G66)
108Sensor ground
115VVT camshaft adjustment valve (N205)
117Throttle motor G186 (+)
118Throttle motor G186 (−)
121ECM + coil power (J271 relay feed)
EMUPRO16
EMUPRO16-A
EMUPRO16
2Injector 1
3Injector 2
4Injector 3
5Injector 4
11Power GND
12+5V source A
13Digital 2 (cam)
14Digital 4
15Digital 8
16Digital 6 (turbo speed)
17Power GND
19Power GND
20Digital GND
21Digital 1 (crank)
23Digital 7
24Digital 5 (turbo speed)
25Auxiliary 9
27Ignition 4
28Ignition 3
29Ignition 2
30Ignition 1
31CAN 1 high (PC comm)
32CAN 1 low (PC comm)
OEM-T121-96 Injector 1 (N30)
OEM-T121-89 Injector 2 (N31)
OEM-T121-97 Injector 3 (N32)
OEM-T121-88 Injector 4 (N33)
GND
5V ref
OEM-T121-86 Camshaft position sensor (G40)
OEM-T121-28 Alternator DF terminal (charge warning)
OEM-T121-39 Clutch pedal switch (F36)
OEM-T121-49 Power steering pressure switch (F88)
GND
GND
0V sensor
OEM-T121-82 Crank position sensor (G28)
OEM-T121-38 Cruise control switch (E45)
OEM-T121-54 Road speed signal (VSS)
OEM-T121-115 VVT camshaft adjustment valve (N205)
OEM-T121-94 Ignition coil 4 (N163)
OEM-T121-103 Ignition coil 3 (N158)
OEM-T121-95 Ignition coil 2 (N128)
OEM-T121-102 Ignition coil 1 (N127)
OEM-T121-60 CAN bus high
OEM-T121-58 CAN bus low
EMUPRO16-B
EMUPRO16
1Auxiliary 1 (WBO heater)
2Auxiliary 2 (WBO heater)
3Auxiliary 3 (WBO heater)
4Auxiliary 4 (WBO heater)
5Auxiliary 5
6Auxiliary 6
7Auxiliary 7
8+12V supply
9Digital GND (flash drive)
12+5V source A (flash drive)
13Auxiliary 8
14+12V supply
15+12V switched
16Knock sensor 1
17Knock sensor 2
19Power GND
20WBO 1 IP (LSU 4.9)
21WBO 1 VS (LSU 4.9)
24WBO 2 IP (LSU 4.9)
25WBO 2 VS (LSU 4.9)
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-T121-25 V144 Evaporative diagnostic pump (Pin 2)
OEM-T121-80 V144 Evap Diagnostic Pump (Pin 1)
OEM-T121-104 Boost control solenoid (N75)
+12V supply
0V sensor
5V ref
OEM-T121-105 Diverter valve (N249)
+12V supply
OEM-T121-3 Ignition switch +12V (term 15)
OEM-T121-106 Knock sensor 1 (G61)
OEM-T121-107 Knock sensor 2 (G66)
GND
OEM-T121-51 Wideband lambda pump (G39)
OEM-T121-70 Wideband lambda Nernst signal (G39)
OEM-T121-52 Wideband lambda pump (G39)
OEM-T121-71 Wideband lambda Nernst signal (G39)
EMUPRO16-C
EMUPRO16
1Auxiliary 10
2Auxiliary 11
3Auxiliary 12
4Analog 7
6H-bridge 1A
10Analog 1 (MAP)
11Analog 3
12Analog 5
13Analog 8
18Analog 2
19Analog 4
20Analog 6
25H-bridge 1B
27+5V source B
28+5V source B
29Analog GND
30Power GND
31Precision analog 1
32Precision analog 2
33Precision analog 3
34Precision analog 4
OEM-T121-22 Brake vacuum pump (V192)
OEM-T121-47 Check engine light (MIL)
OEM-T121-48 EPC warning light
OEM-T121-57 Cruise control switch (E45)
OEM-T121-118 Throttle motor G186 (−)
OEM-T121-101 Boost pressure sensor (G31)
OEM-T121-35 Accelerator pedal position 2 (G185)
OEM-T121-69 Post-cat lambda signal (G130)
OEM-T121-75 Cruise control switch (E45)
OEM-T121-33 Accelerator pedal position 1 (G79)
OEM-T121-93 Engine coolant temperature (G62)
OEM-T121-55 Brake pedal switch (F)
OEM-T121-117 Throttle motor G186 (+)
5V ref
5V ref
0V sensor
GND
OEM-T121-53 MAF sensor signal (G70)
OEM-T121-84 Throttle position sensor 1 (G187)
OEM-T121-92 Throttle position sensor 2 (G188)
OEM-T121-68 Post-cat lambda signal (G130)
EMUPRO16-D
EMUPRO16
11Digital 9 / Analog 19
12Digital 10 / Analog 20
13Auxiliary 13
15Precision analog 6
16Precision analog 8
17Analog GND
18Power GND
19Auxiliary 14
21Precision analog 5
22Precision analog 7
26Auxiliary 15
OEM-T121-40 A/C signal
OEM-T121-41 A/C signal
OEM-T121-64 EVAP canister valve (N80)
OEM-T121-56 Brake pedal switch (F)
OEM-T121-76 Cruise control switch (E45)
0V sensor
GND
OEM-T121-9 Secondary-air injection valve (N112)
OEM-T121-85 Intake air temperature (G42)
OEM-T121-67 Crash sensor signal
OEM-T121-37 Engine speed signal (tacho to cluster)
SP-GND · 9 pins
SP-14V · 5 pins
SP-0V · 11 pins
SP-5V1 · 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.
87 / 87 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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