engine management light not working ZT diesel

Post Number:#1 by **oneyedriley** » July 17th, 2018, 11:59

Hi folks, this is my first post on the forum and I am hoping someone can help. My trusty and loved 2003 diesel ZT-T has failed the MOT, the most difficult item being the non-illumination of the engine management light. The instrument panel has been sent away for repairs and no fault found. The MOT garage which is generally helpful I think is out of its depth and I can see there is a prospect of the car being scrapped.because of this. Can anyone please suggest where I should start looking? Thanks!

Post Number:#2 by **ceedy** » July 17th, 2018, 4:30

Really need to contact Phil T4 on facebook he will know, but I think I read somewhere that the light does not illuminate on some cars . and not because of a fault ? .

C.

Post Number:#3 by **ceedy** » July 17th, 2018, 5:10

Another definite option rather than scrapping .. is wire in a cheat ..... but when stuck ???

https://www.ebay.co.uk/itm/152752199872?ul_noapp=true

Post Number:#4 by **KDA4G** » July 17th, 2018, 7:29

Need to pull the fault codes from the IPK as soon as possible - as said above, there may not be any.
Most unlikely that there would be a fault on the IPK (instrument panel) itself.

Is there any way to force the warning light to ‘on’, on a diesel, without a T4 handy?

Post Number:#5 by **ceedy** » July 17th, 2018, 8:34

Spoke to Phil and hes said ....to answer your question, if you have the standard ipk then the separate mil light in the top portion of the ipk will come on,

the message centre ipk only has a check engine light.

Don't know what the OP has or if its been swapped at any time ??

C.

Post Number:#6 by **MrDoodles** » July 17th, 2018, 11:53

Have you checked for some black tape over the light? :shrug:

Post Number:#7 by **oneyedriley** » July 18th, 2018, 8:55

Thanks for the responses folks, I will go to the garage this morning and we will have a look at these with the car.

Post Number:#8 by **Stocktech** » July 19th, 2018, 9:21

This, Shamelessly stolen from somebody who knows these inside out.

"Does it have the T21 boost temperature sensor in the top intercooler hose?

If not it is a pre EOBD model and the check engine warning lamp does not self test illuminate, it only is lit under specific fault conditions.

Failure of the throttle demand pedal

Or pre delivery fuel pressure below 220 KPA under engine load"

You should give this info to your MOT tester.

Was this ever solved, do we know as it seems the OP never reported back ?

Post Number:**#10** by **kitts** » August 17th, 2018, 8:30

Yes- the car wasn't supposed to show the light as in the above post. If I recall the op took the info to the test station and they checked and he got his mot.

kitts (view post) wrote:Yes- the car wasn't supposed to show the light as in the above post. If I recall the op took the info to the test station and they checked and he got his mot.

Excellent thank you even though a little belated