95 ECU Pinout Guide

 

I was trying to find a decent pinout guide for the ECU pinouts of 1995

240sx, but they all seemed to kinda suck. Anyways I found the picture with

the numbers of the ECU pins from the apex meter install. Re-did the

graphics and made a table of all the pinouts from a chilton guide. I was

wanting to share this file with the rest of the 240sx community because the

chiltion manual gives the pin numbers but no guide to the locaton of them

on the ECU. Thanks for the great web site, Hiram B

 

Pin# and Color

Function

1 W

To power transistor on distributor.

2 Y/R

Power Transistor Voltage?

3 Y/R

RPM Signal.

4 R/B

To coil in ECCS relay.

5 ?

?

6 ?

?

7 Y/BL ORR/BL

5th position switch (MT)

AT control unit (AT)

8 B/P

Fuel Pump relay

9 Y/B

AC system

10 B

GND

11 ?

?

12  O/BL

Triple pressure switch.

13 O/BL

Cooling fan relay

14 BL/G

Cooling fan relay

15 B/P

AC system

16 ?

?

17 ?

?

18 O

To mil indicator.

19 B

GND

20 O

7.5A Fuse, hot during start.

21 Y/B

AC system

22 G OR R/G

Neutral Position Switch

23 W

Throttle position sensor

24 BL/G

AT control unit

25 P/W

Power steering pressure switch

26 Y/G

Speedometer

27 ?

?

28 ?

?

29 BL/W

AT control unit

30 BL/R

AT control unit

31 ?

?

32 ?

?

33 R/Y

AT control unit

34 ?

?

35 ?

?

36 ?

?

 
 

Pin# and Color

Function

37 ?

?

38 B/R

Switched Power

39 B

GND

40 W

Camshaft position sensor

41 B

Camshaft position sensor

42 ?

?

43 B

GND

44 W

Tied to 40

45 B

Tied to 41

46 ???

Front O2 sensor

47 W

MAF

48 B

MAF GND

49 LG/R

Resistor in throttle position sensor

50 B

?

51 BL/O

Coolant temp sensor

52 W

Rear heated O2 sensor

53 P

Crank shaft position sensor

54 W

Knock Sensor

55 BL/R

Rear window defrost relay

56 B/W

ECCS relay N/O

57 ?

Ambient air temperature switch

58 R

To Data link

59 ?

?

60 ?

?

61 B/W

Tied to 56

62 B/W

EGR temp sensor

63 BL/W

Intake temp sensor

64 G/B

Data link

65 G

Data link

66 ?

?

67 ?

?

68 G/W

Data link

69 ?

?

70 ?

?

101 BR

IAD-AAC solenoid

102 BR

Fuel injector 1

103 BL/R

EGRC solenoid

104 G/B

Fuel injector 3

105 ?

?

106 B

GND

107 W/B

Fuel injector 2

108 B/W

Rear heated O2 sensor

109 BL/B

Fuel injector 4

110 ?

?

111 B

GND

112 B

GND

113 R

Constant Power

114 O/BL

REC relay

115 ?

?

116 ?

?

117 ?

?

118 B

GND