SR20DET ECU wiring diagram.

[Neo]

SR20DET wiring ECU pins and description of wire colors

1 - Coil Pack 1 Output (Via power transistor Unit) - Red White
2 - Coil Pack 2 Output (Via power transistor Unit) - Red Yellow
3 - Tachometer signal output - Yellow Red
4 - ECCS Relay - Red Black
5 - Ignition Pulse Monitor (For Trip Comp ?)
6 - Ignition Signal Ground - Black
7 - RX data (Signal from Nissan Consult hand terminal) - Green Black
8 - Coil Pack 3 Output (Via power transistor Unit) - Red White
9 - Coil Pack 4 Output (Via power transistor Unit) - Red White
10 -
11 -
12 - A/T signal DT3 (autotrans gear select ?)
13 - Ignition Signal Ground - Black
14 - CLK clock (timing signal) - Green White
15 - TX data (signal to Nissan Consult hand terminal) - Green
16 - MAFS signal input ( Mass Air Flow Sensor ) - White
17 - MAFS ground - Black
18 - Water Temp Sensor input - Blue Brown
19 - Oxyen Sensor input (O2) - White
20 - TPS input (throttle postion sensor) - White
21 - Sensor ground - Black
22 - CAS 180deg signal (Crank angle sensor) - White
23 - CHK check (check start) ? - Green Red
24 - Monitor check Lamp (red) (fault code lamp output)
25 - Exhaust over temp warning lamp output - Orange
26 - Exhaust temp sensor inout (Behind the Cat) - Blue Yellow
27 - Detonation sensorinput (knock sensor) - White
28 - TPS for A/T (kick down switch)
29 - Sensor ground - Black
30 - CAS 180deg signal (crank angle sensor) - White
31 - CAS 1deg signal (crank angle sensor) - Black
32 - Speed sensor input - Yellow Green
33 -
34 - Start signal (from ignition switch) - Orange
35 - A/T neutral switch input - Green Orange
36 - IGN (ignition ON, from ignition switch) - Black Red
37 - TPS power output (power to throttle position sensor) - Light Green Red
38 - ECCS power - Black White
39 - ECCS ground - Black
40 - CAS 1 deg signal (crank angle sensor) - Red Black
41 - A/C on input (Air Con ON from A/C panel) - Blue Green
42 - A/T signal DT1 (auto trans gear select ?)
43 - Power steering switch (speed proportional control output) - Purple White
44 - A/T signal DT1 (auto trans gear select ?)
45 - Ambient air tamp sensor input - Blue White
46 - ECCS backup power - Red
47 - ECCS power - Black White
48 - ECCS ground - Black
101 - Injector No. 1 drive output - White Black
102 - EAI control solenoid output (egr valve control ?) - Orange Black
103 - Injector No.3 drive output - Green Black
104 - Fuel pump relay output - Black Purple
105 - Fuel pressure control module - Red White
106 - A/C on output (Air conditioner on relay signal) - Green Black
107 - Injector ground - Black
108 - Injector ground - Black
109 - Reverse electrical flow return circuit (alternator fail input) - Red
110 - Injector No. 2 drive output - Yellow Black
111 - Turbo boost pressure control solenoid (over boost cut ?) - Orange Black
112 - Injector No. 4 drive output - Blue Black
113 - AAC valve control (Auxiliary Air Control, Idle speed control) - Light Blue
114 -
115 -
116 - Injector ground - Black

[Lazymofo]

1 - Coil Pack 1 Output (Via power transistor Unit) - Red White
2 - Coil Pack 2 Output (Via power transistor Unit) - Red Yellow
8 - Coil Pack 3 Output (Via power transistor Unit) - Red White
9 - Coil Pack 4 Output (Via power transistor Unit) - Red White

can someone correct this?

[Lazymofo]

Originally Posted by Lazymofo

1 - Coil Pack 1 Output (Via power transistor Unit) - Red White
2 - Coil Pack 2 Output (Via power transistor Unit) - Red Yellow
8 - Coil Pack 3 Output (Via power transistor Unit) - Red White
9 - Coil Pack 4 Output (Via power transistor Unit) - Red White

can someone correct this?

i figured it out

8 - Coil Pack 3 Output (Via power transistor Unit) - Red green
9 - Coil Pack 4 Output (Via power transistor Unit) - Red blue

[nrg]

um.. which sr20det?

[tofuman]

I have a 1995 240 with a sr20det red top engine swap and everything is working fine, but the speedometer is not functioning right. when im going 40 it says im going 80 and so on. the speed is always doubled. the trip odometer goes really fast as well.

[conrad1017]

your probably using a s13 us or jdm speedo sensor the s14 usdm will give u a good reading

[conrad1017]

ur probably using a s13 speedo if u use a s14 u wont get doubled readings