Can anyone please tell me where the data link connector is on a 1994 Discovery I?
All Data website said on the right hand side below glove compartment, but it doesn't seem to be there.
I know it is not an OBD II, it is one with 5 pins, again, according to All Data.
Thanks

 

If I'm not mistaken, didn't they have it under the pass seat?

It had an led, I thought, that would give you the codes.


luck,greg

 

There is a code display unit under the passenger seat. But I have a SRS light that blinks for some minutes then stays steady on. In addition, the antilock light is also on and I wanted to see if I could get the mechanic to turn them off. The display shows nothing.
There is a red plug next to the display under the seat but it seems to have the shape as to accept a relay. There is a black one like this under the glove compartment as well.

 

Hola, yo tambien tengo un problema parecido. Me señala codigo 12 el visor, pero no tengo los codigos OBD1 para saber que falla es. Mi land rover es del mismo año 3.9 V8

 

I have a 3.9 also. I did a search online and found code 12 is for the Mass Air Flow sensor (MAF). There might be more codes besides that one, the display only shows one at a time.

 

On a 94-95 D1 you'll have airbag faults usually with a bad clockspring or an SRS sensor or wiring.

 

Put the ignition switch in position II.
Disconnect the Data Link Connector (DLC) , which is located behind R/H side of dash, and wait 5 seconds. Reconnect data link connector.
Put the ignition switch in position 0 and wait till the load relay drops out.
Put the ignition switch in position II. The display will be blank if no other faults exist. If other codes exist, the next fault code will be displayed.
If multiple faults exist, repeat steps 1 through 4 until all faults are cleared. NOTE : Code 02 indicates that the Engine Control Module (ECM) has just been reconnected. Switch the ignition switch to position II to clear code 02.
Code
Circuit Or Condition

02
Battery Recently Disconnected

03
ECM Memory Recently Cleared

12
MAF Sensor

14
ECT Sensor

15
Engine Fuel Temperature Sensor

17
Throttle Position Sensor

18
Throttle Position Sensor/Mass Air Flow Sensor

19
Throttle Position Sensor/Mass Air Flow Sensor

21
Fuel Tune Select Resistor

23
Fuel Supply

25
Ignition Misfire

28
Air Leak

29
ECM Memory Check

34
Injector Bank A

36
Injector Bank B

40
Misfire Left Bank

44
HO2S Left Bank

45
HO2S Right Bank

48
Idle Air Control Valve

50
Misfire Right Bank

59
Group Faults 23/28

68
Vehicle Speed Sensor

69
Park/Neutral Position Switch