W221 Drive to workshop without changing gear

[hmang]

Right then .
Progress .
A clever person spent some time testing yesterday .

Seems my can lines are ok but there's a strange out out from the Ecu to the x30/21 voltage distributor .

He wants to test further .
In the meantime I'm
Looking into ecu repair possibilities .

Any one had ecu repaired ?

 

[star]

So your star still won't communicate with tcu or ism? Remove the connector under pass seat and open it up. The pcb fails.

 

[hmang]

.
Thanks Star .

I might have got my designations mixed up but i think that one is the x 30 /30 that's what i meant in the previous post . It by the vent under the front passenger seat .
Block connector with 3 lots of can wires.

must say star instructions were a bit misleading , they tell you to test a particular plug which would intimate that they are in a particular socket in the block . Apparently they are not in any specific socket and it does not matter where they go in the block

It was probed quite extensively yesterday .
From what i understand there should be a difference in voltage between the high and low but should total 5 , and there was a discrepancy here

easy to check though , my new best friend has a spare one or i can pinch one from the missus wagon .......hopefully getting close .....

 

[Steve@Avantgarde]

Check the wiring diagram.

Most CAN buzz bars have 1 2 pin wiring plug which will have a different colour(s) to the rest. That is usually the supply line to the connector, the rest are feeds off to various other networks.

 

[star]

This is inside can connector

 

[hmang]

This is inside can connector

Thanks fellas

 

[hmang]

sent the ecu away /
got a replacement one back all programmed with my settings .

plugged in turned on ..........yaay ......got gear selector lights that;s good .

programmed the new repaired ism ...........that all went in .............yaaaaay.

and it changes gear .....yaaaaaaaaay.

put every thing back together , and the engine runs .....................yaaaaaaaaaaaaaaay.

drove it 1" forward and 1" backwards .............yaaaaaaaaaaaaaaaaaaaay

had to go in for me tea.

Will give it a try tomorrow

 

[television]

I've got low 11.6v on the rear battery .
Could that be related ?

11.6 could be a sleeping CAN, or the battery could be old, it would normally at 10 days to the battery go to switch off or possible

 

[Botus]

sent the ecu away /
got a replacement one back all programmed with my settings .

plugged in turned on ..........yaay ......got gear selector lights that;s good .

programmed the new repaired ism ...........that all went in .............yaaaaay.

and it changes gear .....yaaaaaaaaay.

put every thing back together , and the engine runs .....................yaaaaaaaaaaaaaaay.

drove it 1" forward and 1" backwards .............yaaaaaaaaaaaaaaaaaaaay

had to go in for me tea.

Will give it a try tomorrow

great news.... hope it behaves itself. Its been a bit of a nightmare for you

 

[hmang]

great news.... hope it behaves itself. Its been a bit of a nightmare for you

yeah , ism went down and the ecu too ............chicken and egg job . dunno which went first .

doesn't matter now.
did the adaptation on my new recon torque converter, got a new mot

just done a couple hundred miles , so far so good

 

[hmang]

yeah , ism went down and the ecu too ............chicken and egg job . dunno which went first .

doesn't matter now.
did the adaptation on my new recon torque converter, got a new mot

just done a couple hundred miles , so far so good

2000 miles further on . .............all ok

if any one's interested

JPAT in bristol repaired the torque converter
SOFTELECTRONIC in bulgaria did the ISM
ECU DOCTOR in Plymouth sorted the ecu ( exchange unit )

great service from all the above .

and

Thanks to all all the members on here who have offered help , suggestions and support .

it is much appreciated

thanks
phil

 

[John Laidlaw]

^ Great result and thanks for those recommendatons!

 

[Steve@Avantgarde]

Hmmm

Unlikely all went down but hey, its sorted now.