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
5V ref
ELITE2500-B-10 SPI 3
ELITE2500-B-1 Crank (Trigger) (+)
0V sensor
ELITE2500-A-16 AVI 2
ELITE2500-B-13 AVI 1 (O2 Input 2)
ELITE2500-B-7 SPI 4
ELITE2500-B-2 Cam (Home) (+)
0V sensor
ELITE2500-A-17 AVI 3
ELITE2500-A-2 AVI 4
ELITE2500-B-3 AVI 7 (Air Temp)
ELITE2500-B-8 SPI 1
0V sensor
ELITE2500-B-4 AVI 8 (Coolant Temp)
0V sensor
OEM-C84
Stock ECU being replaced
1Sensor supply +5V (VCC)
4No.2 speed sensor (SP2-)
5Crank position (NE)
6Crank sensor return (NE-)
7Throttle position (VTA1)
8Manifold pressure (PIM)
9No.2 speed sensor (SP2+)
10Cam position 1 (G1)
11Cam 1 return (G1-)
12TRAC throttle position (VTA2)
13O2 sensor (OX1)
14Intake air temperature (THA)
16Cam position 2 (G2)
17Cam 2 return (G2-)
20Coolant temperature (THW)
22Sensor ground (E2)
ELITE2500-A-25 DPO 6 (ECR OUT)
ELITE2500-A-34 Stepper 1 P4 / DPO
ELITE2500-A-22 INJ 4
ELITE2500-B-12 AVI 6 (O2 Input 1)
GND
OEM-C85
Stock ECU being replaced
2EFI main relay control (M-REL)
3Check-engine lamp (W)
4Fuel pump control (FPC)
5Diagnostic test 1 (TE1)
16Power ground (E1)
ELITE2500-A-18 DPO 1
ELITE2500-A-15 AVI 9 (MAP)
ELITE2500-A-27 INJ 5
ELITE2500-A-13 12V ignition input
ELITE2500-A-14 AVI 10 (TPS)
ELITE2500-B-9 SPI 2
ELITE2500-B-20 AVI 5
EFI main relay power (+B)
EFI main relay power (+B1)
OEM-C86
Stock ECU being replaced
5A/C clutch relay (ACMG)
7A/T overdrive disable 1 (OD1)
8Cat temp warning light (EGW)
9Ignition switch (IGSW)
10A/T 2nd-gear indicator (2)
12No.1 speed sensor (SP1)
13Cat temperature sensor (CCO)
22EFI main relay power (+B)
23EFI main relay power (+B1)
ELITE2500-A-1 DPO 2
ELITE2500-B-22 KNOCK 2
ELITE2500-B-21 KNOCK 1
ELITE2500-A-29 INJ 7
ELITE2500-A-21 INJ 3
ELITE2500-A-20 INJ 2
ELITE2500-A-19 INJ 1
ELITE2500-A-23 DPO 3
ELITE2500-A-5 IGN 3
ELITE2500-A-4 IGN 2
ELITE2500-A-24 DPO 5 (fuel pump trigger)
ELITE2500-A-33 Stepper 1 P3 / DPO
ELITE2500-A-32 Stepper 1 P2 / DPO
ELITE2500-A-31 Stepper 1 P1 / DPO
ELITE2500-B-19 DPO 4
ELITE2500-A-3 IGN 1
ELITE2500-A-6 IGN 4
ELITE2500-A-28 INJ 6
GND
ELITE2500-A-8 IGN 6
ELITE2500-A-7 IGN 5
GND
GND
OEM-C88
Stock ECU being replaced
3O2 heater (HT)
4Knock sensor 2 (KNK2, rear)
5Knock sensor 1 (KNK1, front)
7EVAP purge VSV
8Injector 3 (#30, cyl 2&6)
9Injector 2 (#20, cyl 3&5)
10Injector 1 (#10, cyl 1&4)
11A/T shift solenoid 1 (S1)
15Ignition 3 (IGT3)
16Ignition 2 (IGT2)
17A/T shift solenoid 2 (S2)
20ISC stepper coil 4 (ISCV4)
21ISC stepper coil 3 (ISCV3)
22ISC stepper coil 2 (ISCV2)
23ISC stepper coil 1 (ISCV1)
24Ignition 1 (IGT1)
26Ignition 4 (IGT4)
27A/T lock-up solenoid (S3)
28Power ground (E11)
29Ignition 6 (IGT6)
30Ignition 5 (IGT5)
33Power ground (E02)
34Power ground (E01)
ELITE2500
ELITE2500-A
ELITE2500
1DPO 2
2AVI 4
3IGN 1
4IGN 2
5IGN 3
6IGN 4
7IGN 5
8IGN 6
9+5V DC
10Battery ground
11Battery ground
1312V ignition input
14AVI 10 (TPS)
15AVI 9 (MAP)
16AVI 2
17AVI 3
18DPO 1
19INJ 1
20INJ 2
21INJ 3
22INJ 4
23DPO 3
24DPO 5 (fuel pump trigger)
25DPO 6 (ECR OUT)
26ECU injector power input
27INJ 5
28INJ 6
29INJ 7
31Stepper 1 P1 / DPO
32Stepper 1 P2 / DPO
33Stepper 1 P3 / DPO
34Stepper 1 P4 / DPO
OEM-C88-3 O2 heater (HT)
OEM-C84-13 O2 sensor (OX1)
OEM-C88-24 Ignition 1 (IGT1)
OEM-C88-16 Ignition 2 (IGT2)
OEM-C88-15 Ignition 3 (IGT3)
OEM-C88-26 Ignition 4 (IGT4)
OEM-C88-30 Ignition 5 (IGT5)
OEM-C88-29 Ignition 6 (IGT6)
5V ref
GND
GND
OEM-C86-9 Ignition switch (IGSW)
OEM-C86-10 A/T 2nd-gear indicator (2)
OEM-C86-7 A/T overdrive disable 1 (OD1)
OEM-C84-7 Throttle position (VTA1)
OEM-C84-12 TRAC throttle position (VTA2)
OEM-C86-5 A/C clutch relay (ACMG)
OEM-C88-10 Injector 1 (#10, cyl 1&4)
OEM-C88-9 Injector 2 (#20, cyl 3&5)
OEM-C88-8 Injector 3 (#30, cyl 2&6)
OEM-C85-4 Fuel pump control (FPC)
OEM-C88-11 A/T shift solenoid 1 (S1)
OEM-C88-17 A/T shift solenoid 2 (S2)
OEM-C85-2 EFI main relay control (M-REL)
ECU injector power input
OEM-C86-8 Cat temp warning light (EGW)
OEM-C88-27 A/T lock-up solenoid (S3)
OEM-C88-7 EVAP purge VSV
OEM-C88-22 ISC stepper coil 2 (ISCV2)
OEM-C88-21 ISC stepper coil 3 (ISCV3)
OEM-C88-20 ISC stepper coil 4 (ISCV4)
OEM-C85-3 Check-engine lamp (W)
ELITE2500-B
ELITE2500
1Crank (Trigger) (+)
2Cam (Home) (+)
3AVI 7 (Air Temp)
4AVI 8 (Coolant Temp)
5Crank (Trigger) (−)
6Cam (Home) (−)
7SPI 4
8SPI 1
9SPI 2
10SPI 3
11+13.8V ECU supply
12AVI 6 (O2 Input 1)
13AVI 1 (O2 Input 2)
14Signal ground
15Signal ground
16Signal ground
19DPO 4
20AVI 5
21KNOCK 1
22KNOCK 2
OEM-C84-5 Crank position (NE)
OEM-C84-10 Cam position 1 (G1)
OEM-C84-14 Intake air temperature (THA)
OEM-C84-20 Coolant temperature (THW)
SP-0V · 4 pins
SP-0V · 4 pins
OEM-C84-9 No.2 speed sensor (SP2+)
OEM-C84-16 Cam position 2 (G2)
OEM-C86-12 No.1 speed sensor (SP1)
OEM-C84-4 No.2 speed sensor (SP2-)
+13.8V ECU supply
OEM-C85-5 Diagnostic test 1 (TE1)
OEM-C84-8 Manifold pressure (PIM)
0V sensor
0V sensor
0V sensor
OEM-C88-23 ISC stepper coil 1 (ISCV1)
OEM-C86-13 Cat temperature sensor (CCO)
OEM-C88-5 Knock sensor 1 (KNK1, front)
OEM-C88-4 Knock sensor 2 (KNK2, rear)
SP-0V · 10 pins
SP-14V · 5 pins
SP-GND · 7 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.
62 / 62 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
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