Which bit is unclear? Is it working out your new factor or determination of the measured consumption figure?

These codes will be bespoke MGR ones. Without a T4 or similar high end reader, you'll not find the answers. Ordinary code readers will only answer the few generic (common to all) codes. I'm afraid the rest remain a mystery to us mere mortals.

TC

My marker IPKDM

basically everything. my trip computer is telling me i get 10km/l and i drive 500km before empty tank. thats great if my dearest had a 50litre tank. but it has a 65litre tank and it takes 60 odd litres to fill so i think threres something wrong??? what are the 4 digits for? how do i calculate what to enter there? (sorry, i dont think in miles and gallons...:))

i dont think this country ("repuplic" of south africa) has a t4 machine. the one ive seen at what i belive to be the last dealer looks shockingly similar to a generic carman thingy... can i ask a dealer in the uk to look it up or must the car be showing those errors for him to know what they mean?

thanks mr tc

OK here's what you do. I'm assuming here a 'full' tank is 64.8 litres. You will know better than me. Just note the actual amount when you do a brim to brim excercise.

You actually travel 500km on this amount. Again, get the accurate distance from your brim-brim runs.

So the Measured Consumption is 500/64.8 = 7.72 km/l

Your computer is saying it's 10 km/l so that's the Indicated Consumption.

The Correction Factor (using a calculator) is:

Indicated x 1000 / Measured = 10 x 1000 / 7.72 = 1295 (forget any decimals)

So you replace the existing Factor with this one.
Go to test 20 and you'll see the existing Factor ('ABCD').
Change D to 5
Change C to 9
Change B to 2
Change A to 1 (if necessary) by following the routine described in the instructions.

Now when you use the trip computer to display your fuel consumption, it will be much nearer the truth. Note that you must allow the computer to run a good while (1000 km or so) without resetting it to get a meaningful result.

I suspect a dealer would prefer to have the car hooked up to do the diagnosis. Since they charge a lot for doing this service, I can't see anyone willing to simply tell you over the phone/email, etc.

You might try Keith Alexander (user name 'Keith'), he has a T4.

TC

My Quick find marker = IPKDM (IPK Diagnostics Mode)

thank you for explaing it so clealy. even i understand now:D will do a couple more brim to brim fills and do the calculations. although getting "10l/100km" urban is very nice in an 1.8 auto the size of a rover75...

i'll track down mr keith and appeal to him for help. would love to know whats wrong with my beloved

again, thank you for your help:}

"Spoke" with TC and he has mentioned that this is an "on-going" project. As he discovers more, he will post. So WIP..... ;)

HI TC
Thanks great work indeed this is what makes this forum the sharing of knowledge, i will have to get to grips with this over the weekend once it stops raining, as i need to know at what temp the fan is kicking in at on low speed, Arctic.:bowdown:

Post #1

This is my revision dated 22 March 2013.

Nice to see a good bit of WIP :bowdown::D:D Sorry I missed it at the time :o

I suspect E is Espana, Spain

Hi T-Cut,

Good work.

I have used your instructions to check all the lamps and dials in step 2.0 because the Left Turn Arrow does not show up when moving the direction indicator lever down.

The test shows that everything but the Left Turn Arrow lamp is OK.

But - since I did the test the temperature and tachometer readings stay on zero and the daytime running light does not work.

When I test them in step 2.0 all the dials work.

I have checked the three instrument pack 5A fuses and they are OK.

Have you seen this before?

What also puzzles me is that the VIN is shown as _13354 and not 133549.


Best Regards from Denmark

Thanks T-Cut just what I needed. Car running at 48 degrees on coolant. New stat required. Question is now OEM or in top hose.