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Renault Trafic 1.9 dCi 115 2007 - Non starting, code DF892 group 2 injector feed - Fixed #

Posted by Ian Gray on February 21, 2014, 4:28 pm

Year of Manufacture *: 2007
Engine Size and Code *: 1900
( Optional ) ECU Type: Bosch
( Optional ) Scanner Used: Autocom
( Optional) Fault Codes: DF892

Hi all, I know there's loads of stuff relating to non starting Renault's but haven't been able to find anything very helpful.
Van came into us as a non runner, previous few days it had been stopping then restarting. Plugged in and retrieved DF892 (Group 2 injector feed - short circuit) Removed covers and found top of engine flooded with water, checked wiring back to ecu and found to be OK, Replaced and coded injector. Now engine will fire a couple of times when cranking and cuts out, won't run for more than a few seconds. Still has same fault code. Doesn't appear to be delivering fuel but I'm assuming this is because something is switching off the pump as it will try to start every time. Have checked all the obvious things. Any help from anyone who's experienced the same fault will be greatly appreciated. Thanks.

Re: Renault Trafic Dci 115 - Non starting

Posted by Mark Carter on February 21, 2014, 6:30 pm, in reply to "Renault Trafic Dci 115 - Non starting"
Mark Carter

>>> Now engine will fire a couple of times when cranking and cuts out,<<<

This is only after fitting the new injector?

What does it do with the old one back in play?

What wiring checks have been carried out?

Mark

Modern cars, Its all wizardry and witchcraft

Re: Renault Trafic Dci 115 - Non starting

Posted by Graeme Simm on February 23, 2014, 9:41 am, in reply to "Re: Renault Trafic Dci 115 - Non starting"

has the fault cleared since you have changed the injector??
The covers on these engines used to be good at cutting through the injector wires.
That said even if you had one injector not firing it would start on three cylinders. if you unplugged the shorted injector.
essentially, you are; if you still have the original fault code looking at three things, injector, wiring, ECU.
you have changed the injector,you said you have checked the wiring if you still have the same code you need to check the supply and the signal to the injector from the ECU and compare it to a good injector.
remember renault count the cylinders from the flywheel side.
this engine have lots of problems with injector back leak, high pressure pumps snapping shafts and engine timing issues. so plenty to go at.....

Re: Renault Trafic Dci 115 - Non starting

Posted by Graeme Simm on February 23, 2014, 11:00 am, in reply to "Renault Trafic Dci 115 - Non starting"

sorry my mistake I have just noticed it said "group 2 injector feed", obviously the feed supplies two injectors. we are still looking at an injector, wiring or ECU the difference is now we are looking at two injectors two sets of wiring,sorry for my miss reading of the post.

Re: Renault Trafic Dci 115 - Non starting

Posted by Tommy Forrest on February 23, 2014, 6:55 pm, in reply to "Renault Trafic Dci 115 - Non starting"

Hi Ian

I am assuming that this is the 2.0L M9R engine with Piezo injectors.

I would check the other injectors as it is quite common for more than one to fail at the same time. Group 2 normally refers to injectors 2 & 3.

Check injector resistance is between 150k & 200k ohms also check each pin at injector for short to earth.

Also if it is the M9R engine cylinder 1 is at the timing chain end.

Link: Injector removal service

Re: Renault Trafic Dci 115 - Non starting

Posted by Ian Gray on February 23, 2014, 8:20 pm, in reply to "Renault Trafic Dci 115 - Non starting"
Ian Gray

Thank you for the replies fellas. Can't refit the old injector as it was destroyed removing it. Have checked the wiring from injectors back to ECU. It does appear to be the correct injector we changed as if we unplug it, it logs an "open circuit" fault code for "group 2" Yes the code clears but immediately comes back as soon as we crank it. We have counted it as number 2 from the front (timing chain) end of the engine. Didn't realise that group 2 identified No's 2 & 3. Will check No.3 and wiring tomorrow plus the other things you have all suggested. Many thanks again, i'll keep you all posted. Cheers.

Re: Renault Trafic Dci 115 - Non starting

Posted by Ian Gray on February 24, 2014, 8:28 am, in reply to "Renault Trafic Dci 115 - Non starting"
Ian Gray

Unplugged injector 3 this morning, starts and runs (obviously with a mis-fire)

Fixed #

Posted by Ian Gray on April 15, 2014, 1:10 pm, in reply to "Re: Renault Trafic Dci 115 - Non starting"
Edited by board administrator April 17, 2014, 2:53 pm

Thanks for your advice guys, Had the ECU tested and supposedly repaired. Turned out to be No.4 Injector. Replaced today and runs perfect.

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