1989 – 1995 Nissan Bluebird SR20DET ECU Diagram

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Pin # Name Signal Type

2 Tachometer Signal RPM

16 Mass Air Flow Sensor Analog

17 Mass Air Flow Sensor Ground Ground

18 Engine Coolant Temperature Sensor Analog

19 O2 Sensor Signal Analog

20 Throttle Position Sensor Analog

21 Sensor Ground Ground

26 Air Temperature Sensor Analog

32 Vehicle Speed Sensor Speed

48 Power Ground (Electronic Concentrated Control System) Ground

101 Injector # 1 Speed

103 Injector # 3 Speed

110 Injector # 2 Speed

112 Injector # 4 Speed

116 Power Ground (Electronic Concentrated Control System) Ground