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
M800-B-9 Digital Input 2
M800-B-1 Crank Reference Timing Input
0V sensor
M800-A-15 Analog Voltage Input 2
M800-A-14 AV1
M800-B-10 Digital Input 3
M800-B-2 Cam Sync Timing Input
0V sensor
M800-A-16 Analog Voltage Input 3
M800-A-17 Analog Voltage Input 4
M800-B-4 Analog Temperature Input 2
M800-B-11 Digital Input 4
0V sensor
M800-B-3 Analog Temperature Input 1
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)
15OD direct-clutch speed sensor (NCO+)
17Cam 2 return (G2-)
20Coolant temperature (THW)
22Sensor ground (E2)
M800-A-18 AUX1
M800-A-27 INJ5
M800-A-28 INJ6
M800-A-25 Analog Voltage Input 5
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)
M800-A-1 AUX2
M800-B-20 Analog Voltage Input 6
M800-A-29 INJ7
M800-B-21 AV7
M800-B-22 AV8
M800-B-8 Digital Input 1
M800-B-5 Analog Temperature Input 3
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)
10A/T 2nd-gear indicator (2)
11Diagnostic test 2 (TE2)
12No.1 speed sensor (SP1)
13Cat temperature sensor (CCO)
22EFI main relay power (+B)
23EFI main relay power (+B1)
M800-A-23 AUX3
M800-A-21 INJ3
M800-A-20 INJ2
M800-A-19 INJ1
M800-A-24 AUX4
M800-A-5 IGN3
M800-A-4 IGN2
M800-A-32 AUX6
M800-A-22 INJ4
M800-A-34 AUX8
M800-A-33 AUX7
M800-A-31 AUX5
M800-A-3 IGN1
M800-A-6 IGN4
M800-A-30 INJ8
GND
M800-A-8 IGN6
M800-A-7 IGN5
GND
GND
OEM-C88
Stock ECU being replaced
3O2 heater (HT)
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)
M800
M800-A
M800
1AUX2
25V Engine Sensor Supply
3IGN1
4IGN2
5IGN3
6IGN4
7IGN5
8IGN6
10GND Battery Negative
11GND Battery Negative
14AV1
15Analog Voltage Input 2
16Analog Voltage Input 3
17Analog Voltage Input 4
18AUX1
19INJ1
20INJ2
21INJ3
22INJ4
23AUX3
24AUX4
25Analog Voltage Input 5
26VBAT Battery Positive
27INJ5
28INJ6
29INJ7
30INJ8
31AUX5
32AUX6
33AUX7
34AUX8
OEM-C86-5 A/C clutch relay (ACMG)
5V ref
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)
GND
GND
OEM-C84-8 Manifold pressure (PIM)
OEM-C84-7 Throttle position (VTA1)
OEM-C84-12 TRAC throttle position (VTA2)
OEM-C84-13 O2 sensor (OX1)
OEM-C85-2 EFI main relay control (M-REL)
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-C88-20 ISC stepper coil 4 (ISCV4)
OEM-C88-3 O2 heater (HT)
OEM-C88-11 A/T shift solenoid 1 (S1)
OEM-C85-5 Diagnostic test 1 (TE1)
VBAT Battery Positive
OEM-C85-3 Check-engine lamp (W)
OEM-C85-4 Fuel pump control (FPC)
OEM-C86-8 Cat temp warning light (EGW)
OEM-C88-27 A/T lock-up solenoid (S3)
OEM-C88-23 ISC stepper coil 1 (ISCV1)
OEM-C88-17 A/T shift solenoid 2 (S2)
OEM-C88-22 ISC stepper coil 2 (ISCV2)
OEM-C88-21 ISC stepper coil 3 (ISCV3)
M800-B
M800
1Crank Reference Timing Input
2Cam Sync Timing Input
3Analog Temperature Input 1
4Analog Temperature Input 2
5Analog Temperature Input 3
8Digital Input 1
9Digital Input 2
10Digital Input 3
11Digital Input 4
140V Comms Reference
150V Auxiliary Sensor Supply
160V Engine Sensor Supply
20Analog Voltage Input 6
21AV7
22AV8
OEM-C84-5 Crank position (NE)
OEM-C84-10 Cam position 1 (G1)
OEM-C84-20 Coolant temperature (THW)
OEM-C84-14 Intake air temperature (THA)
OEM-C86-13 Cat temperature sensor (CCO)
OEM-C86-12 No.1 speed sensor (SP1)
OEM-C84-4 No.2 speed sensor (SP2-)
OEM-C84-9 No.2 speed sensor (SP2+)
OEM-C84-15 OD direct-clutch speed sensor (NCO+)
0V sensor
0V sensor
0V sensor
OEM-C86-7 A/T overdrive disable 1 (OD1)
OEM-C86-10 A/T 2nd-gear indicator (2)
OEM-C86-11 Diagnostic test 2 (TE2)
SP-0V · 8 pins
SP-14V · 4 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.
56 / 56 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
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