W124 E200 with no ignition on cylinders 1 and 4

[grober]

My own experience would indicate that the PMS was limited to the EARLY 1.8 [ W202] and 2 [ W124 and W202 ] litre models with the 2.2 [ W124] and 2.3 [ W124 and W202 and W210] litre being exclusively HFM but I couldn't swear to it in court.

 

[kth286]

In my experience the majority of the 'all electronic' engines of the 124 vehicles were 2.2 litre as opposed to 2 litre.

And so the majority of ECUs seen on 124s are HFM type, with the PMS being rare.

The HFM had twin cams, with variable cam timing on the inlet cam.

Variable length inlet manifold tracts etc etc.

 

[essam999]

That thread is about a faulty HFM unit. joe prosser needs a PMS ignition control module which lives on the OS inner wing & looks like this -

018 545 10 32 is an extremely rare unit, I have never seen one & it doesn't show up in MB's EPC.

I have the correct PMS unit with the follow on part number, the successor to 018 545 10 32 if you like.

joe p I can't PM you so if you are interested in finding out more put up an email address & I'll get in touch.

i have the same car and i got a problem with 018 545 10 32 i have to replace it i couldn't find one like it on ebay or any onlineshopping sites i have found it in a shop but its extremely expensive i wonder if u got a solution for me i would be very grateful

 

[essam999]

1. There are seven (7) sorts of trimming resistor and they are used to adjust the timing of ignition (number of degrees in advance or after TDC). 024 545 0628 is 110 ohm: 024 545 0728 is 4,750 ohms

Pin outs to the engine are:-
(These are not identified on the Bosch modules but are on the Siemens)
1 – 3 not used
4 injectors 1 and 4
5 idle speed control valve
6 power supply to throttle position sensor TPS (potentiometer), and idle speed control
7 signal input from coolant temperature sensor
8 signal input from idle speed control
9 ground for TPs, idle speed control, air temperature sensor and coolant temperature sensor
10 ignition coil for cylinders 1 and 4 (ignition triggered by ECU breaking the ground connection of the primary winding)
11 ignition coil for cylinders 2 and 3
12 if used then for factory fitted alarm/immobiliser system
13 injectors 2 and 3
14 idle speed control valve
15 signal input from TPS
16 signal input from air temperature sensor
17 signal from idle/throttle switch

2. The base is metal and the circuit board is immersed in a silicone gel (has the consistency of jelly found in a meat pie). Arrows indicate the corresponding connections between the, now broken, wires from the circuit board on the left to the tabs on the right. The wires are very delicate as indeed are the connections indicating that very little current is used.

3. Most likely candidate for failure of ECU (no triggering for coil – cylinder 1 and 4). The connecting wire has become detached within the silicone and the area beneath shows a discoloured burn.

Note that the resistance on primary windings on the coils are 0.5 ohms and on the secondary winding 7,000 ohms. There should infinite resitance between primary and secondary and, indeed, with either and earth. The resistance of the loom between PMS and coils should be 0.3 ohms and again infinite resistance with earth. It might be a good idea to remove the engine connector with the PMS to check on the condition of the out pins on the PMS, it is the one area that shows quite a build up of white corrosion and may benefit from a rub down to fresh metal every decade or so

thanks for ur info but it seems hard to fix it but u help me alot knowing evey pins wats it do

 

[neilrr]

i have the same car and i got a problem with 018 545 10 32 i have to replace it i couldn't find one like it on ebay or any onlineshopping sites i have found it in a shop but its extremely expensive i wonder if u got a solution for me i would be very grateful

If you post an email address I'll contact you.

 

[joe prosser]

Essam999, The Bosch 018 545 1032 is specific to manual 2 litre E class cars without cam sensor. However the Siemens 018 545 7032 which is fitted to automatic 2 litre E class cars will work as a substitute; the 7032 supplied by Neilrr for my dead 1032 works perfectly. Early C class cars with PMS ECUs also have cam sensors (absent on E class 2 litres) which may have altered pin usage in the connector so this may restrict their interchangeability. A piece of advice is to keep the round plug-in trimming resistor (see thread photo) from your old ECU. My old one was a ..0628 (110 ohm) and I swapped it over for the ..0728 (4,750 ohm) that was supplied on the 'new' ECU. This resistor adjusts the timing so is important. Neilrr is your man for ECUs

 

[essam999]

If you post an email address I'll contact you.

[email protected]

 

[essam999]

Essam999, The Bosch 018 545 1032 is specific to manual 2 litre E class cars without cam sensor. However the Siemens 018 545 7032 which is fitted to automatic 2 litre E class cars will work as a substitute; the 7032 supplied by Neilrr for my dead 1032 works perfectly. Early C class cars with PMS ECUs also have cam sensors (absent on E class 2 litres) which may have altered pin usage in the connector so this may restrict their interchangeability. A piece of advice is to keep the round plug-in trimming resistor (see thread photo) from your old ECU. My old one was a ..0628 (110 ohm) and I swapped it over for the ..0728 (4,750 ohm) that was supplied on the 'new' ECU. This resistor adjusts the timing so is important. Neilrr is your man for ECUs

thanks for ur help

 

[neilrr]

[email protected]

That email address is bouncing things back -

"Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 554 554 delivery error: dd Sorry your message to [email protected] cannot be delivered. This account has been disabled or discontinued [#102]. - mta1433.mail.mud.yahoo.com (state 18).rth"

 

[joe prosser]

hi neil, try [email protected] ...this was the address left in my inbox from essam

 

[bogdan205]

w2020 pms

Hello,
I have the same issue with a bad PMS made by Bosch with pn/ 0261200612 .
My question is if somebody managed to change the high voltage transistors and then build back the unit.
My car is a w202 with a 2.0 petrol engine
Thank you, and sorry for my poor English.

 

[grober]

Unfortunately the general opinion seems to be these PMS units are too difficult to repair and must be replaced. A car breakers yard would be the cheapest source. I have not read anywhere of a successful repair.

 

[neilrr]

MB part number on that is 015 545 01 32. I have these.

Never seen one successfully repaired. Read this thread from the beginning to see how the joe prosser got on with opening / repairing his old unit.

 

[bogdan205]

Pms

Hello Neilrr
Please give me some information about your bosch 0261200612 at [email protected]
Thank you.

 

[joe prosser]

Hi Bogdan,
Just to confirm what others have said. If the PMS ECU was possible to fix I would have fixed it. The interior is too delicate and lots of damage occurs when opening the unit. Replacement is the only way and Neilrr was very quick and efficient in getting one for me that works perfectly. Do please check the resistances of cables and coils (see above thread for details) just as a precaution against any electrical 'short' that might have caused the old ECU to fail and would then cause the replacement to fail also. In my case the ECU just died without any external cause but on some W202 engines the low tension wires to the coils packs can suffer from badly cracked insulation. I know it is a pain but if yours are bad these need to be replaced before replacing the ECU

 

[essam999]

That email address is bouncing things back -

"Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 554 554 delivery error: dd Sorry your message to [email protected] cannot be delivered. This account has been disabled or discontinued [#102]. - mta1433.mail.mud.yahoo.com (state 18).rth"

okay try this [email protected]

 

[essam999]

hi neil, try [email protected] ...this was the address left in my inbox from essam

i get too many spam msg on this so i stop using it

 

[juliushas]

Sorry for digging up this post from the grave, but I have the same situation - Bosch unit #018 545 10 32 is down... I would like to know, is it possible to change it to Siemens unit #015 545 99 32? And if it's not possible, what needs to be changed along with the Siemens unit, to make it work? Thank you for the answers and sorry for my bad english
P.s. I have a W202 C200 '96 Mercedes... Thanks again

 

[neilrr]

Sorry for digging up this post from the grave, but I have the same situation - Bosch unit #018 545 10 32 is down... I would like to know, is it possible to change it to Siemens unit #015 545 99 32? And if it's not possible, what needs to be changed along with the Siemens unit, to make it work? Thank you for the answers and sorry for my bad english
P.s. I have a W202 C200 '96 Mercedes... Thanks again

015 545 99 32 is an HFM unit from a W140 with a straight 6 M104 engine. Your car is a W124 with a 4 cylinder M111 engine so 015 545 99 32 will never work.

If you read this thread form the beginning, especially Joe Prosser's bit you'll see what's what.

I can sell you the replacement for 018 545 10 32 if you need one.

 

[juliushas]

But on the unit, there is stated, that it is for 4 cylinder engine..