E-Class (W212) 2010 - 2016: E 350, E 550

Future Troubleshooting preparation

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Old 08-17-2022, 02:20 PM
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2014 - W212.065 - E400 ( M276.820, 3 liter Turbo) RWD not Hybrid
Future Troubleshooting preparation

I just realized I been messing with my car for 19 days now. Started 30th June 2022.

Intend to do A-job, later I expand to B-job and so on and so on , now its at J-job probably
So while my ECM wiring is still in tear down mode, I maximize the opportunity.

I plan to make 2 connectors in parallel with :
01. High Pressure Fuel Pump , its quantity valve. 2 pins.
02. Crankshaft speed sensor. 3 pins.

These two devices, if I want to measure/probe them, I have to do it by back-probing at the ECU 96 pin connector.







I have bought the spare connectors for these two devices, but its original one and must be connected at the device itself.

HP-Fuel Pump, no way to access the connector at the HP fuel pump and do a pull






==========

The crankshaft sensor is a 100% disaster.





Now knowing female and male terminals insertion life cycle being GOOD, is limited to 20 if non silver coating and 50 if silver coated,
I want to reduce the frequency of engine computer connector removal cycle.

I managed to do High Pressure Fuel Pump only, as I do not have extra Deustch Connector, only got 1 of 2 pin type.



De-skinning the jacket and the solder the extra parallel cable







With this new extra parallel connector, I can scope the HP Fuel Pump with ease.... Yipee !!!!




Next.... the Crankshaft sensor.... I shall update.

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pierrejoliat (08-24-2022)
Old 08-17-2022, 02:53 PM
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MY'14 W212 M276 3.5NA @60kMi
crank sensor

I guess they really don't want quick replacement of the crankshaft sensor.


heat shield fastened by 4 screws

What's the WIS procedure like... remove engine first?
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pierrejoliat (08-24-2022)
Old 08-17-2022, 11:06 PM
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2014 - W212.065 - E400 ( M276.820, 3 liter Turbo) RWD not Hybrid
The WIS would probably reccomend (like in other models using M276) to remove engine bay heat shield ( intermediate bulkhead/firewall) first.......euugghhhh another nightmare
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Old 08-21-2022, 11:11 AM
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2014 - W212.065 - E400 ( M276.820, 3 liter Turbo) RWD not Hybrid
Crankshaft sensor future scoping connector done.
Both connectors pin number/assignment I follow original sensors.









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