Thread: fault code reset needed after Option B?

Originally Posted by Alex 110

I carried out option B after getting the 3 amigos. I still have the 3 amigos, so 2 options:
1. it was not a shuttle valve fault in the first place (no nanocom to check).
2. I need to find someone with a nanocom to clear the fault codes to turn the lights off.
I can get to a nanocom in the not too distant future, and I'm hoping someone can tell me whether option 2 above is true, or whether I will be searching for other fault codes
Cheers,
Alex

Alex

Were the three amigos resettting each time you stopped the car and restarted the car. If so, this is good. If not, also not bad.

Assuming the initial fault was the shuttle value switch and you have done option b I would be inclined to think the earth has not been established correctly so check this first. Basically re-check your work.

If the amigoes were not re-setting with the restarting of your car then potentially you have hit the 'lucky number' (I think it's 256 or something in this range). 256 (or so) is the number of times it will reset itself before becoming a hard fault.

So if you want to clear the faults in your car you can do it the old school way.

1. Remove the battery terminals.
2. Open the drivers door and place your foot on the brake. (this will remove all the residual current) Hold the brake and count to 10.
3. Hook the battery terminals back up.
4. Restart your car and see what happens.

Before you do this though, have your stereo code handy.

If none of the above resolves the issue you'll need to read the faults. Should not be any there immediately but might re-appear.

There are many faults relating to the three amigos. Generally the SVS is 90% of them.

Regards
Andrew

Andrew,
I'm not sure what you mean by the "faults resetting".
Basically, what happened each time I started the car was the lights came on as per usual bulb check, the TC & HDC lights then went off for a second or so before coming back on again and remaining on. The ABS light remained on constantly. Is this what you meant?
Cheers,
Alex

Alex

When I first encountered the three amigos this was the routine.

Start the car and start driving, 15 minutes or so into the drive the three (orange) amigos would appear with the three chimes. I would then keep driving until I reached my destination, typically work, and then turn the car off. After turning the car off and then, if I started the car straight away again (for example to change carparks), the three amigos would not be there as the stop/start of the ignition has reset the fault relating to the dash lights. The electronic fault however is still recorded in the car's BCU and will stay there until it is reset (out of sight out of mind so to speak). After 256 or so events, the appearances of the three amigos by the stopping and restarting of the engine will not rid you of the three amigos. They are permanent until the BCU is cleared of all faults.

From what you describe below it is not consistent with my experience. You may have a wheel sensor issue. Maybe a wheel sensor is just dirty (excessive brake dust). I recommend having the faults read to determine the exact fault.

Regards
Andrew

Not the shuttle valves - I've checked all my Option B wiring, & it all check out. So Option B now goes under the heading preventive maintenance rather than fixing the 3 Amigos.

Been thinking back, & about a week before the amigos appeared I put new front springs in & pulled more of the ABS lines into the wheel well so they wouldn't get caught short. No obvious problems with them, & I've unplugged & replugged the connectors in the ABS lines just inside the engine bay - again no obvious problems.

I need that Nanocom!

It's not preventative maintenance is just doing random **** in the hope you'll fix something.

Clearing the amigo's once they are permanent:

a) fault not active - in other words you have fixed the CAUSE.
b) vehicle must be driven above 15kph in the case of a sensor fault
c) fault code cleared from the ECU for other faults.

And yes, you do need that Nanocom. It helps prevent the urge to perform Random **** instead of fixing the problem

Andrew D is pretty much correct re the faults, although they are logged to the SLABS ECU rather than the BCU.

There are two kinds of faults - non-permanent and permanent. What Andrew is describing is the behaviour of an non-permanent fault.

After detecting a fault, the SLABS ECU selects an appropriate default strategy which, where possible, retains some
operational capability. A shuttle valve switch fault and throttle position signal fault are classified as permanent faults.
If a permanent fault is detected, the related warning lamp illumination and default strategies are automatically
employed in subsequent ignition cycles, even if the fault is intermittent, until the fault has been rectified and cleared
from memory. If a non permanent fault is detected, the related warning lamp illumination and default strategies will
only be employed in subsequent ignition cycles if the fault is still present.

Alex

Looking at it from the glass is half full perspective, option b is a pretty good investment. I'm assuming you must love tinkering away on your car. ( I do too....at times)

Considering you just finished working on the spring, then it's a fairly good stab in the dark you may have snagged the sensor.

Anyhow go with the electronic diagnosis first otherwise you'll be removing the head before you know it. Don't forget, it's a Land Rover, every two weeks there's something to fix. You have to pace yourself.

Regards
Andrew

I have a Nanocom unlocked for D2 (V8) and can help you reset if you still need it.

Ph no. PM'd.

[QUOTE=OffTrack;1799425]It's not preventative maintenance is just doing random **** in the hope you'll fix something.

Don't knock it - I enjoy doing stuff to my car & since I'd had the SV fault before I figured why not?