Nissan 200SX S15 SR20DET ECU Pinouts

The following diagram and pinout reference should help you work out what does what. Handy if your making a field harness or installing a programmable ECU. I’ve numbered and colour coded the pins in figure 1 for easy matching against the pinout table below.

Figure 1:

S15 SR20DET ECU Pinout Reference diagram

Pinout Table

Pin Wire Description
101 W/G Fuel Injector # 1
102
103 G/B Fuel Injector # 3
104
105 R/L Intake Valve Timing Control Solenoid Valve
106 B/P Fuel Pump Relay
107 B ECU Ground
108 B ECU Ground
109 W ECU Backup Power
110 L/R Fuel Injector # 2
111 B/R Front Heated Oxygen Sensor Heater
112 L/B Fuel Injector # 4
113 SB IACV, AAC (Auxiliary Air Control)
114
115 O/B Wastegate Valve Control Solenoid Valve
116 B ECU Ground
1 R/W Ignition Signal # 1
2 L/O Tachometer
3 Br/R Ignition Signal # 2
4 R/B ECU Relay
5 R/G Ignition Signal # 3
6 B ECU Ground
7 Br/Y Data Link Connector
8 ? NATS
9 P/B Cooling Fan Relay (Low)
10 L/G Cooling Fan Relay (High)
11 G Air Conditioner Relay
12 Pu/W Automatic Transmission Signal # 3
13 B ECU Ground
14
15 SB Data Link Connector
16 L Mass Air Flow Sensor
17 P Mass Air Flow Sensor Ground
18 P/B Engine Coolant Temperature Sensor
19 W Front Heated Oxygen Sensor
20 R Throttle Position Sensor
21 Gy TPS Ground
22
23 G/R Data Link Connector
24 O Malfunction Indicator Lamp
25 R/L Ignition Signal # 4
26
27 W Knock Sensor
28 R/Y Throttle Posion Sensor Signal Output (A/T)
29
30 B/Y Camshaft Position Sensor (Position Signal)
31 LG Camshaft Position Sensor (Reference Signal)
32 W/Pu Vehicle Speed Sensor
33 G/R Electrical Load Signal (Headlamp and Rear Defogger – Pu A/T)
34 O/L Start Signal
35 G/O Park/ Neutral Position Switch (R/G A/T)
36 B/R Ignition Switch
37 Lg/R Sensor’s Power Supply (TPS)
38 B/W ECU Power
39 B ECU Ground
40
41 L/B Air Conditioner Switch (Dual Pressure Switch)
42
43 Pu/W Power Steering Oil Pressure Switch
44 L/W Automatic Transmission Signal # 2
45 L/O Automatic Transmission Signal # 1
46 W ECU Backup Power
47 B/W ECU Power
48 B ECU Ground

Links

Acknowledgements

The source for this information came from a spreadsheet I came across a while ago, I have checked the information here to the best of my ability against various sources on the internet. As a result I cannot guarantee that the information above is indisputable. The author of the original spreadsheet is unknown.

Leave a Reply

Your e-mail address will not be published. Required fields are marked *