hello all , while checking the diagnostic connectors under my dash (black and green ones ) why do the green ones when connected run the radiator fan in short bursts ? the black connectors told me the crank sensor was buggered so i replaced that at nz $ 160.00 , no more start issues now , can anyone explain the function of the green ones please , cheers blair

http://www.surrealmirage.com/subaru/engine.html

Green plugs are for a special troubleshooting method for Subaru mechanics.

which means us......

It's also needed during a reset

http://www.surrealmirage.com/subaru/engine.html

From the link given above:

"NOTE: These instructions are only for the 90-94 Legacies with an OBD I computer. If you have a 95 or later Legacy, you will need a scan tool or will need to have the dealer read the codes."

It's possible that the overseas models may have stayed OBD1, or at least retained the OBD1 connector functionality for longer then the US models.

:-\

It's beginning to look like the statement I quoted above is misleading; it should probably say that you can't retrieve the OBD-II codes without a scan tool. My own '99 Outback (obviously OBD-II) has the green connectors (although not the black ones). I haven't actually had a reason to connect them, so I can't verify precisely what that does. However, I found some info concerning the CEL D-Check codes during an online search (which I also haven't verified, but hopefully is correct); it's a bit more complete than other tables I've seen. If anyone knows which model years it applies to, please chime in. Here it is:

 

For Later Models with Multi-Point Fuel Injection (MPFI)

 

11 Crank Angle Sensor or Circuit

12 Starter Switch or Circuit

13 Cam Position Sensor or Circuit (TDC Sensor on Justy)

14 Fuel Injector No. 1 (Legacy, Impreza, Justy, SVX)

14 Fuel Injector No. 1 and 2 (XT, Loyale, GL, DL)

15 Fuel Injector No. 2 (Legacy, Impreza, Justy, SVX)

15 Fuel Injector No. 3 and 4 (Loyale, GL, DL)

15 Fuel Injector No. 5 and 6 (XT-6)

16 Fuel Injector No. 3 (Legacy, Impreza, Justy, SVX)

16 Fuel Injector No. 3 and 4 (XT)

17 Fuel Injector No. 4 (Legacy, Impreza, SVX)

17 Fuel injector No. 1 and 2 (XT-6)

18 Fuel Injector No. 5 (SVX)

19 Fuel Injector No. 6 (SVX)

21 Coolant Temperature Sensor or Circuit

22 Knock Sensor or Circuit (Right Side on SVX)

23 Air Flow Meter or Circuit (Exc. Justy)

23 Pressure Sensor (Justy)

24 Air Control Valve or Circuit (Exc. Justy)

24 Idle Speed Control Solenoid Valve (Justy)

25 Fuel injector No. 3 and 4 (XT-6)

26 Air Temperature Sensor (Justy)

28 Knock Sensor No. 2 (SVX, Left Side)

29 Crank Angle Sensor (SVX, No. 2)

31 Throttle Position Sensor or Circuit

32 Oxygen Sensor or Circuit (No. 1, Right Side, On SVX)

33 Vehicle Speed Sensor (VSS) or Circuit

34 EGR Solenoid or Circuit

35 Purge Control Solenoid or Circuit

36 Air Suction Solenoid Valve (Impreza)

36 Ignitor Circuit (Justy)

37 Oxygen Sensor (No. 2, Left Side, On SVX)

38 Engine Torque Control (SVX)

41 Air/Fuel Adaptive Control

42 Idle Switch or Circuit

43 Throttle Switch (Justy)

44 Wastegate Duty Solenoid (Turbo Models)

45 Pressure Sensor Duty Solenoid (Turbo Models)

45 Atmospheric Pressure Sensor or Circuit (Non- Turbo Models)

49 Airflow Sensor

51 Neutral Switch (Manual Transmission Models)

51 Inhibitor Switch (Automatic Transmission Models)

52 Parking Brake Switch (Exc. Justy)

52 Clutch Switch (Justy)

55 EGR Temperature Sensor or Circuit

56 EGR System

61 Parking Brake Switch (Loyale)

61 Fuel Tank Pressure Control Solenoid (Impreza)

62 Fuel Temperature Sensor (Impreza)

62 Electric Load Signal (Justy)

63 Fuel Tank Pressure Sensor (Impreza)

63 Blower Fan Switch (Justy)

65 Vacuum Pressure Sensor