SCAN TOOL shows Problem!!

[tim_haskins]

Hi guys,

Just checked my car with my diagnostic checker and it seems as if i have a fault with :-

31=Left mixing flap motor

Is that the servo motor on the passenger side (RHD) and is there a way of checking/repairing this? No other faults reported in motronic so all good really. Handy bit of kit I plotted a graph showing engine idle speeds, MAF sensor,etc which was cool. Carried out system adaption as well. All looking pretty good. I hope I never need it again!!

Nice to be able to talk to the car!!


Tim

 

[Dave Wilkinson]

Tim,

The left mixing flap servo is number 4 in this diagram. The servos quite often suffer from worn or burnt tracks and many people have reported some success at repairing them by slightly relocating the contact wipers once getting inside. I beleive new servos are around £110 or so from the OPC.

Did you buy the Scantool unit from Ricardo David?? I got mine last month and it's an really impressive bit of building - especially the 19-pin plug.

Regards

Dave

 

[tim_haskins]

Hi Dave,

Nice to hear from you again. Yes i did get it from Ricardo David. I was impressed with the plug also. Have you tried to use the ECU input function yet? mine seems to lock up or maybe i am not leaving it for long enough!. Can you check each servo with the scan tool or is it only possible to do the system check.

Really pleased with the purchase though. Shame i have buckled my wheels and can go out for a drive!! but thats another story! dont supose you have another pair of genuine cup fronts?

All the best

Tim

 

[Dave Wilkinson]

Tim,

I really haven't managed to play with the Scantool box enough I'm afraid. I did a bit of boning up on it before Maurice's seminar at CH but there's a lot more to it than I initially thought. There is a mechanism to excercise things like the ISV, fuel injectors, resonance flap etc. etc. and I was hoping to find a similar function to exercise the CCU functions too, like the servos etc. I think a few guys on Rennlist are leaning more too and there are one or two threads imerging with more information.

Sorry to hear about the wheels. I've only got a set of 18" Turbo Twists going spare at the minute. Tell me exactly what you need (16" or 17", Cup 1/2 etc.) and I'll put some feelers out!!

Regards

Dave

 

[tim_haskins]

Thanks for the reply Dave,

I need some 17"x 7.5 fronts but they have to be genuine. Hope you can help.
If you get a min could you try out the diagnostics on the ccu it seems like some people can connect others cant??
Thanks

Tim

 

[rjc]

Hi guys

been following this thread with interest. Bit of a newbie on this topic so is there a link to somewhere where I can learn all about scantools and their application to 964?

all info gratefully received

Thanks

Robin

 

[Scamper]

I have one of Ricardo's kits and it is a very nicely put together piece of kit, with its own little carry case!!

I have tried the ccu setting and it does connect etc. I got a few errors on the blower motors which need further investigating.

No error codes were present since my last test (I replaced my coils due to surging/hesitation) so everything looks fine at the moment.

Did the System Adaptation but havent noticed any difference. All the readings are within expected parameters.

Still trying to figure out the graphing bit myself.

Luckily I bought it when the exchange rate was very favourable []

 

[Dave Wilkinson]

ORIGINAL: rjc

Hi guys

been following this thread with interest. Bit of a newbie on this topic so is there a link to somewhere where I can learn all about scantools and their application to 964?

all info gratefully received

Thanks

Robin

Robin,

If you look on the Rennlist 964 Forum (www.rennlist.com) and do a search for "Scantool" you will find a host of information. There's far too much to even attempt here, the discussions have been going on for a year or more.

Regards

Dave

 

[tim_haskins]

Can you do the individual tests for the ccu ie moving each servo in turn etc... mine wont do it maybe because i dont have air con?? dont know. I can connect to the motronic ok but on the ccu controls i just get the error code in the bottom window. If i try to do the individual test then mine comes up 'test compleate' straight away unlike the ecu output functions which go through various checks.


Still nice piece of kit though. Glad i bought one rather than paying for a hammer which has crossed my mind!!!

Tim

 

[bobster]

Hi Guys, I'm also watching this thread with interest.

I'm having a problem with the 25 amp fuse blowing when fan on speed 3 for a few minutes, so I think I could do with one.

How much are they and who/where is Ricardo please?

Bob.

 

[kevin]

ORIGINAL: bobster

Hi Guys, I'm also watching this thread with interest.

I'm having a problem with the 25 amp fuse blowing when fan on speed 3 for a few minutes, so I think I could do with one.

How much are they and who/where is Ricardo please?

Bob.

That maybe because it should be a 30A fuse in there, it was uprated part way through the model life.

Dave will be along shortly to confirm this...

Kevin

 

[Dave Wilkinson]

Yes, as Kevin rightly says, the fuse rating for the rear blower (and condenser blower and sunroof/cab top) were all uprated in November 1990 to 30 amps. No other changes, e.g. wiring gauge, were made - just the fuse rating. The TSB covering the change is here.

As far as the Scantool box is concerned the ones referred to here were part of a group buy organised by Ricardo David in the US. He is a regular poster on Rennlist and can be contacted at ricardo.x.david@gmail.com. Whether he is in a position to produce more I'm afraid I don't know but an e-mail to him to ask is a good idea. At the time the kits were priced around $186 including shipping to the UK.

Regards

Dave

 

[bobster]

Thanks Kevin and Dave,

Unfortunately its the first fuse that blows, ID'd as 'Blower Inside Compartment' No 1 in the tech bulletin wiring diagram.
I will change the three in question this evening if they haven't been done, but can't think it will solve the problem with No 1 fuse. Unlesss I'm missing something?

Any advice please?

Bob.

 

[Dave Wilkinson]

Bob,

The one thing I omitted from the previous post was that the fuse for the rear blower in the electrical panel in the engine compartment was also similarly upgraded to 30 amps. I didn't realise until I re-read the TSB I'd linked to that it didn't mention the rear blower. That must have been covered in a separate TSB.

Blowing the fuse for the internal blowers is often a symptom of a blown or bad amplifier module. The dash blowers are on a constantly variable speed (despite the fact that the switch is numbered 1, 2, 3,4) and the drive to the blowers is done through a solid state amplifier mounted underneath the main fuse panel. The electronics are mounted on a fairly big aluminium heat sink and the whole thing comes as a single part. I've heard of failures of this amplier module and I've seen them come up on eBay from time to time. It's part no. 964.624.010.02.

Regards

Dave

 

[bobster]

Thanks Dave,

I'll change that fuse as well and see if it survives before investigating the amplifier module.

Regards,

Bob.