Went to have the fault codes read today only to be told there is no power getting to the OBD socket. Can anyone tell be which pin is suppost to be a permanant live so that I can check things out.

Thanks again, regards Luke.

I can check with a MM in the weekend, if noone else answers

LIKE THIS? (http://www.auto-diagnostics.info/bmw_20pin_connector)

cheers, will check it out.

Went to have the fault codes read today only to be told there is no power getting to the OBD socket. Can anyone tell be which pin is suppost to be a permanant live so that I can check things out.

Thanks again, regards Luke.

I checked my fault code yesterday by turning the ignition to on and pressing the gas pedal to the floor, and all the way off 5 times. then the check engine light blinks to represent a number. Here's a link for instructions.
http://forums.bimmerforums.com/forum/showthread.php?t=378555

Luko, a caveat to my above post is that-that is for a US car. The pinouts may be reversed for you but the ground may be the same.

Thanks again for all your help.

First I checked out my OBD socket and all is well.

Then I checked my fault codes with the Pedal Pumping Technique and got code 1213 Lambda Control 2, does this mean I need to replace one of my Lambda Sensors and if so which one?

And am I right in thinking the pedal pumping technique will not tell me why my ASC+T light is on as there is nothing about braking in the list of fault codes.

Cheers all, regards Luke.

IIRC that code means that it saw an out of range signal from the O2 sensor.

Check the two rear spark plugs on the left hand from front side of the engine for signs of fouling. (right side from inside the car). They are the most likely to pick up oil from the intake manifold and partially foul.

If they are dark colored then check them against the front two on the same side--swap them around when putting them back in.

Resetting a persistent check engine light to see if it returns is a matter of disconnecting the plug on top of the ECU for a minute or two and then reconnecting. No need to reboot the whole car.

I checked my fault code yesterday by turning the ignition to on and pressing the gas pedal to the floor, and all the way off 5 times. then the check engine light blinks to represent a number. Here's a link for instructions.
http://forums.bimmerforums.com/forum/showthread.php?t=378555


Did you also do this for the "other side" of the motor? Instead of pumping the pedal 5 times, you pump it 6 times for the other side bank.
The 1213 code applies to only one bank

IIRC that code means that it saw an out of range signal from the O2 sensor.

Check the two rear spark plugs on the left hand from front side of the engine for signs of fouling. (right side from inside the car). They are the most likely to pick up oil from the intake manifold and partially foul.

If they are dark colored then check them against the front two on the same side--swap them around when putting them back in.

Resetting a persistent check engine light to see if it returns is a matter of disconnecting the plug on top of the ECU for a minute or two and then reconnecting. No need to reboot the whole car.

Terry,

On my daughters V8 530, the rear plugs on both sides are way darker in color, all others look perfect. Question is, would the O2 sensors apply in this case as well?

Thanks,
Rod

Terry

Do you think the out of range signal from the O2 sensor could be as a result that I sometimes run the car on LPG and it burns differantly? I will clear the code by disconecting the ECU and run the car on Petrol only and see if the fault comes back.


GR8White

I just tryed the six pumps and got nothing, also think I read somewere the 5 pumps for one bank and 6 pumps for the other bank was only for the V12.

One of the failings of BMW design is the combination of the intake manifolds and "non-return valve" PCV valve on the V8.

Oil collects in the bottom of the intake manifold and is sucked up when the throttle is opened a ways or in the case of a badly worn or bad Nicasil motor it does it on startup. That is why some of them smoke on start up. Once the cats are warm it isn't as noticeable.

The early M62's also collect oil in the manifold so it isn't just an M60 problem. BMW finally fixed the problem in the later models by running a bypass pipe that runs thru the center of the manifold and out so there is no puddle of oil in the bottom to get sucked up:)
The '97 540 manifold I have downstairs has the pipe.

Because the engine is mounted slightly downhill to the rear that is where most of the oil collects. A bad Nicasil engine will actually dump enough oil vapor to foul the back plugs to the point they stop firing right.

On a good design note the V8 manifold is also a long runner design but the runners are wrapped over the top of the interior chamber and pick up on the opposite side from the valve that they are feeding. You can see them in the pictures of the valve cover gasket repair.

Back to the code--If oil is sucked up it can temporarily foul the O2 sensor giving the Lambda error.

But also a vacuum leak can compromise the Lambda circuits ability to correct the O2 sensors reading by adjusting the fuel mixture. That is why one of the most common errors is sometime a flickering Check Engine at idle at a traffic light.

And on to the ASC Codes

This is the test for the ABS/ASC

ASC Error Code Fetch Procedure:
1) Depress and hold brake pedal
2) Depress and hold ASC switch
3) Turn ignition key to ON (2 position)
4) Read number of flashes on ASC lamp
Error codes as follows:
1 No errors
2 EML throttle control
3 DME shutdown control
4 L/R wheel sensor
5 R/R wheel sensor
6 R/F wheel sensor
7 L/F wheel sensor
8 DME ignition/timing control
9 DME feedback control
10 ASC/MSR control unit fault


There are additional codes but I think most point at the pump/controller functions and I have never seen the list.

And on to the ASC Codes

This is the test for the ABS/ASC

ASC Error Code Fetch Procedure:
1) Depress and hold brake pedal
2) Depress and hold ASC switch
3) Turn ignition key to ON (2 position)
4) Read number of flashes on ASC lamp
Error codes as follows:
1 No errors
2 EML throttle control
3 DME shutdown control
4 L/R wheel sensor
5 R/R wheel sensor
6 R/F wheel sensor
7 L/F wheel sensor
8 DME ignition/timing control
9 DME feedback control
10 ASC/MSR control unit fault


There are additional codes but I think most point at the pump/controller functions and I have never seen the list.


Hi Terry, thanks again for all your help altho tryed this several times today and in all sorts of ways but got nothing, the light never changed, just stays on constantly.