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99 B4 Subaru Legacy ECU pinout help A/F Gauge


l2eeFer13

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Hey guys so ive had a old A/F gauge sitting around since my last car and i decided to put it in today. Im aware its best to be tapped into rear o2 sensor and that its not going to be very acurate as it doesnt have its own inbuilt sensor. Anyway ive gotten this far and i just want to fire it up and put it in anyway

I have done a google search but im not really sure how the numbers work and what order they go in

heres a few pics

PIN #_______Description______Wire Color

1 - Control Unit Power Supply__[Yellow/Blue Stripe]

2 - Control Unit Power Supply__ [Yellow/Blue Stripe]

3 - Knock Sensor Signal __[White/Silver Band]

4 - Fuel Tank Pressure Sensor Signal__ [Yellow/Blue Stripe/Silver Band]

5 - MAF Signal__ [White/Silver Band]

6 - TPS Signal __[White/Black Stripe/Silver Band]

7 - Camshaft Position Sensor Signal (+) __[Dark Green/Silver Band]

8 - Crankshaft Position Sensor Signal (+) __[White/Silver Band]

9 - Empty

10 - Fuel Tank Pressure Control Solenoid Valve __[light Green/Silver Stripe/Silver Band]

11 - Empty

12 - Empty

13 - Idle Air Control Solenoid Valve (Closed End) __[White/Yellow Stripe/Silver Band]

14 - Idle Air Control Solenoid Valve (Open End) __[black/Silver Band]

15 - Pressure Sources Switching Solenoid Valve __[Yellow/White Stripe/Double Silver Band]

16 - Fuel Injector #4 __[blue/Black Stripe/Double Silver Band]

17 - GND (Control Systems) __[black/Red Stripe/Silver Band]

18 - GND (Control Systems) __[black/Red Stripe/Silver Band]

19 - GND (Power Supply) __[black/White Stripe/Silver Band]

20 - GND (Sensors) __[Red/Yellow Stripe/Silver Band]

21 - Fuel Tank Pressure Sensor Power Supply __[Red/Silver Stripe]

22 - Engine Coolant Tempurature Sensor __[black/Yellow Stripe/Silver Band]

23 - Front Oxygen Sensor Signal __[black/Silver Band]

24 - Rear Oxygen Sensor Signal __[black/Silver Band]

25 - Fuel Tempurature Sensor __[Red/Blue Stripe/Silver Band]

26 - Atmospheric Pressure Sensor __[Dark Green/Silver Band]

27 - Fuel Level sensor __[brown/White Stripe/Silver Band]

28 - Camshaft Position Sensor Signal (-) __[Red/Silver Band]

29 - Crankshaft Position Sensor Signal (-) __[black/Silver Band]

30 - Empty

31 - A/C Relay Control __[blue/Orange Stripe/Double Silver Band]

32 - Fuel Pump Relay Control __[Purple/Double Silver Band]

33 - Empty

34 - Empty

35 - Vent Control Solenoid Valve __[brown/Yellow Stripe/Silver Band]

36 - Empty

37 - Rear Oxygen Sensor Heater Signal __[White/Blue Stripe/Double Silver Band]

38 - Front Oxygen Sensor Heater Signal __[White/Double Silver Band]

39 - Back Up Power Supply __[Red/Double Silver Band]

40 - Ignition Control #3 / #4 __[Yellow/Purple Stripe/Silver Band]

41 - Ignition Control #1 / #2 __[Yellow/Blue Stripe/Silver Band]

42 - GND (Oxygen Sensor Heater) __[black/White Stripe/Silver Band]

43 - Empty

44 - Fuel Injector #3 __[blue/Red Stripe/Double Silver Band]

45 - Empty

46 - GND (Power Supply) __[black/White Stripe/Silver Band]

47 - Empty

48 - Empty

49 - Empty

50 - Empty

51 - Empty

52 - Empty

53 - GND (Mass Air Flow Sensor) __[Pink/Silver Band]

54 - Shield __[Gray/Silver Stripe]

55 - Empty

56 - Shield __[black/Green Stripe/Silver Band]

57 - Shield __[Gray/Blue Stripe/Silver Band]

58 - Malfunction Indicator Lamp __[Red/Green Stripe/Double Silver Band]

59 - Empty

60 - A/C Switch __[brown/Yellow Stripe/Double Silver Band]

61 - Empty

62 - Empty

63 - Self-Shutoff Control __[light Green/Silver Band]

64 - Engine Speed Output __[black/Blue Stripe/Silver Band]

65 - Empty

66 - Empty

67 - Empty

68 - Empty

69 - GND (Injectors) __[black/Yellow Stripe/Silver Band]

70 - Fuel Injector #2 __[light Green/Double Silver Band]

71 - Egr Solenoid Valve __[black/Pink Stripe/Double Silver Band]

72 - Purge Control Solenoid Valve __[White/Blue Stripe/Double Silver Band]

73 - Radiator Fan Relay 2 Control __[Dark Green/Red Stripe/Double Silver Band]

74 - Radiator Fan Relay 1 Control __[Red/Blue Stripe/Double Silver Band]

75 - Empty

76 - Empty

77 - Empty

78 - Empty

79 - Empty

80 - AT Diagnostic Input Signal (Not On Manual Car) __[Pink]

81 - AT/MT Identification __[black/Red Stripe/Silver Band]

82 - Neutral Position Switch __[light Green/Black Stripe/Silver Band]

83 - Vehicle Speed Sensor 2 __[Dark Green/Black Stripe/Silver Band]

84 - Test Mode Conector __[blue/Silver Band]

85 - Ignition Switch __[Yellow/Silver Band]

86 - Starter Switch __[Red/Yellow Stripe/Double Silver Band]

87 - Empty

88 - Empty

89 - Empty

90 - Empty

91 - OBD2 PIN-5 __[light Green/Red Stripe/Silver Band]

92 - OBD2 PIN-4 __[Dark Green/White Stripe/Silver Band]

93 - OBD2 PIN-10 __[Orange/White Stripe/Silver Band]

94 - GND (Ignition Systems) __[black/Double Silver Band]

95 - GND (Injectors) __[black/Yellow Stripe/Silver Band]

96 - Fuel Injector #1 __[brown/Double Silver Band]

Or theirs this link that i found from the brothers across the ditch http://www.subyclub.com/topic/8229-subaru-gen-3-be5-b4-ecu-electric-pinouts/

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