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SOLVED** - Help - Need connector P/N - M276 3.0 TT aftercooler temp sensor
*** SOLUTION ON POST no 8 *** 5th Jan 2021
Hi Gang,
I been searching for days on the net and the EPC 2018 ebay clone, I can't find the number.
My Vehicle identification number (VIN) WDD2120656L037906/ MHL212065EJ004768
The connector in question also DOES NOT have part number stamped on it ...dang !!
The wiring harness is useless, it is not showing and also this seems to be for 3.5L engine, the M276 E350
Ona a happier note, I have finally identified the OE of the connector, it is by Hirschmann. The family of the connector is : https://shop.hirschmann-automotive.c...r-fa-connector
They rarely have retailers like other connectors.
I don't have problem with my connector, what I plan is to buy a new connector with the female terminal kit and make a testing wire set.
I am cataloging almost all connector in the engine bay and most have MB part number and 99% chance I can special order, albeit maybe 90 days wait.
As a gratitude for those assisting, I have found a company selling complete connector and copper terminals + seals for a wiring test* kit ( *can be used as such or as extension if wished so ),
of : Connector part number A0225452426
If for M276.820 3.0 TT , an A0225452426 are for :
Camshaft position Sensor B6/4 to B6/7
MAP, at intake after throttle body B28/7
Aftercooler, pressure sensor before throttle body B28/6
Here https://www.warwickts.com/4898/Hirsh...-Connector-Kit
Do becareful when buying a Hirshmann 1.2 SealStar family of connectors, the Keying Code define groove location and don't make a mistake there.
4 configuration usually, A, B, C, D, some can be more.
The 3pole/way connectors have MB P/N stamped, so it is easy.
Example, camshaft position sensors ( hall effect ) of my M276.820 3.0 TT
Attached Hirshmann 1.2 SealStar family of connectors, 2pole/way and 3 pole/way
Thanks Guys
Last edited by S-Prihadi; Jan 5, 2022 at 03:19 AM.
2016 E350 4Matic wagon, 2019 Ford Expedition, 2019 Chevy Bolt EV
There's no PN because Mercedes doesn't catalog that as a separate component, they only sell the full harness. Engine 276.820 showed up here as the DE30LA version.
this is the harness my Parts Information shows, note there's dozens of different PN's for '10' as they are the complete harness for different combinations of options.
Make sense LCG on the wiring harnes thingy, thank you.
They do show individual P/N for many connectors.... at least that is great and I found many already so far.
Without getting connectors only, I can't make my DIY troubleshooting wire set for various sensors.
I am practicing probing my sensors and a stand alone test connector would be safest and best.
2016 E350 4Matic wagon, 2019 Ford Expedition, 2019 Chevy Bolt EV
I probe connectors by taking some very fine stranded wire, take an individual strand and put it on each contact and then reassemble the connector and use those individual strands with your meters or scope or whatever to probe the signals
This spoon shaped back-prober is very good , no need to push deep and won't damage the copper terminal female section up front, as it is touching the rear crimping section only. https://www.aeswave.com/Spoon-Probe-...ers-p9702.html
Looks big, but its actual thin curve spoon shape is not as offensive ( towards rubber gland too ) as a needle style which has OD of 1mm to smallest 0.7mm.
This spoon thickness is only 0.29mm
Amperage reading is still a pain. I hate to need to cut wire protection jacket or undo partial harness. Also many sensors location you can't use current clamp unless wire get extended.
Hence I want to get at least the same female connector MB uses, if not also the male side ( sensor side ) too.... if possible.
Many of the sensors wiring uses MLK or MCON type terminals, at 1.2mm size.
Funny thing is, for the MLK 1.2, EPC does not show a female and male terminals wire repair kit as above for SLK 2.8, instead only female to female ...weird.
Its quite fun but sad learning the monopoly MB does on connectors they are using.
I get to learn how the connector company, like Hirschmann only make connector housing and the copper terminals to be used are from different manufacturer.
Kostal is more of a 1 stop shopping. They make the connector and the copper terminals.
Its quite a headache to read though.
I already have this : https://www.aeswave.com/54-Piece-Aut...Kit-p9606.html
But its not slim enough for some sensors. Thet terminal is good, but the plastic body too fat sometime and it can't reach into the sensor male terminal.
Hi. Thank you for this great work.
I'm looking for the two pins connector that goes on the REAR shock absorber of cars with EDS. (usually they are airmatic too). It is a narrow two pin that drives the coil to change the damping factor. thanks in advance.
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. Happy New Year too 
