CDI 220 W203 (2002) won't start - MBClub UK

Lyn2012 · 10-07-2012, 02:28 PM

Hi, This is my first post and am asking on behalf of my mechanic who is currently working on my car.

The fuel warning light came on with 1/8 tank left, I drove 1/2 mile and parked (just coincidence that I was going to the mechanic anyway). Later on the car started fine but stopped after a few yards and wouldn't start again. More diesel was added but it still wouldn't start.

My mechanic has checked fuses and relays which are fine but the pump doesn't run. There is no feed at fuel pump connector and his question is which colour wire of the 5/6 on the connector is the live feed?

Any input much is appreciated.

martyz · 10-07-2012, 02:49 PM

I take it he has a multi meter if he's checked fuses and relays, should be able to do the same and find the feed,alternatively trace it backwards from the pump(2wires).

Lyn2012 · 10-07-2012, 04:23 PM

I would think so. He was looking for a wiring diagram though.

martyz · 10-07-2012, 04:40 PM

Get him to jump 12v on to the pump,if it runs go back to the relay he's checked locate the switched feed,do a continuity check from there to the pump,no need for wiring diag,basic electrics,

grumpyoldgit · 10-07-2012, 05:49 PM

Maybe a bit too late, only just spotted your post.

rearfusebox.jpg

rearfuzeboxcircuit.jpg

rearfuzeboxcolours.jpg

Lyn2012 · 11-07-2012, 09:37 AM

Thanks for this, I'll pass it on.

Lyn

grumpyoldgit · 11-07-2012, 01:30 PM

Did you get it sorted?

10-07-2012, 02:28 PM	#1
Lyn2012 New Member Join Date: Jul 2012 Car: CDI 220 coupe Posts: 7	CDI 220 W203 (2002) won't start Hi, This is my first post and am asking on behalf of my mechanic who is currently working on my car. The fuel warning light came on with 1/8 tank left, I drove 1/2 mile and parked (just coincidence that I was going to the mechanic anyway). Later on the car started fine but stopped after a few yards and wouldn't start again. More diesel was added but it still wouldn't start. My mechanic has checked fuses and relays which are fine but the pump doesn't run. There is no feed at fuel pump connector and his question is which colour wire of the 5/6 on the connector is the live feed? Any input much is appreciated.

10-07-2012, 02:49 PM	#2
martyz Hardcore MB Enthusiast Join Date: May 2011 Location: New Forest Car: '99 S202 '91 W201 Posts: 1,003	I take it he has a multi meter if he's checked fuses and relays, should be able to do the same and find the feed,alternatively trace it backwards from the pump(2wires).

10-07-2012, 04:23 PM	#3
Lyn2012 New Member Threadstarter Join Date: Jul 2012 Car: CDI 220 coupe Posts: 7	I would think so. He was looking for a wiring diagram though.

10-07-2012, 04:40 PM	#4
martyz Hardcore MB Enthusiast Join Date: May 2011 Location: New Forest Car: '99 S202 '91 W201 Posts: 1,003	Get him to jump 12v on to the pump,if it runs go back to the relay he's checked locate the switched feed,do a continuity check from there to the pump,no need for wiring diag,basic electrics,

10-07-2012, 05:49 PM	#5
grumpyoldgit Hardcore MB Enthusiast Join Date: May 2012 Location: Stourbridge Car: C270CDI Avantgarde SE Posts: 1,109	Maybe a bit too late, only just spotted your post. rearfusebox.jpg rearfuzeboxcircuit.jpg rearfuzeboxcolours.jpg

11-07-2012, 09:37 AM	#6
Lyn2012 New Member Threadstarter Join Date: Jul 2012 Car: CDI 220 coupe Posts: 7	Thanks for this, I'll pass it on. Lyn

11-07-2012, 01:30 PM	#7
grumpyoldgit Hardcore MB Enthusiast Join Date: May 2012 Location: Stourbridge Car: C270CDI Avantgarde SE Posts: 1,109	Did you get it sorted?

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