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Eberspacher AIRTRONIC M D4S: Cable Colors, MAN Truck Heater, Driver & Device Details

Sebastian Kowalski 11916 17
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How do I identify the cable colors and start an Eberspacher Airtronic M D4S heater taken from a MAN truck when the heater and controller have no labels?

The MAN version does not appear to use the same controller/loom as the set shown in the photo, so you cannot assume a simple color-for-color connection. To start it with an Easystart E or similar, the controller applies 24 V to the yellow wire, but that wire is missing in your harness [#16951084] There is also a possibility that this heater uses CAN lines and vehicle-side functions such as ADR or fuel-level data, which can prevent a simple bench start [#16951084] For MAN diagnostics, the blue wire with a yellow stripe was mentioned as the diagnostic line [#16951084] Later comments also note that a MAN-origin heater may not run on the table with the usual simple wiring, and that the standard Eberspächer pinout may not match the MAN harness [#17800070] [#19843963]
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  • #1 16930163
    Sebastian Kowalski
    Level 10  
    Posts: 144
    Rate: 78
    Hello colleagues!
    I got an Eeberspracher heater, model AIRTRONIC M D4S, disassembled from the MAN truck. The set includes a driver, and both he and the device have only dice, no description. I got the driver somehow but I have a question with the device, where is it when it comes to the colors of the cables?
    I am throwing photos below
    Eberspacher AIRTRONIC M D4S: Cable Colors, MAN Truck Heater, Driver & Device Details Eberspacher AIRTRONIC M D4S: Cable Colors, MAN Truck Heater, Driver & Device Details Eberspacher AIRTRONIC M D4S: Cable Colors, MAN Truck Heater, Driver & Device Details Eberspacher AIRTRONIC M D4S: Cable Colors, MAN Truck Heater, Driver & Device Details
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  • #2 16946220
    Sebastian Kowalski
    Level 10  
    Posts: 144
    Rate: 78
    thanks magik332 from the description but I have a cube from Man and I have these colors
    red gr and 2 brown thick and a pump (green / red) ok ... but to turn on and the rest - I suspect that blue / white is a diagnosis - I would take off the casing and get according to the description but it has seals and lime ...
    Attachments:
    • Eberspacher AIRTRONIC M D4S: Cable Colors, MAN Truck Heater, Driver & Device Details WP_20180104_14_40_47_Pro.jpg (466.54 KB) You must be logged in to download this attachment.
    • Eberspacher AIRTRONIC M D4S: Cable Colors, MAN Truck Heater, Driver & Device Details WP_20180104_14_40_13_Pro.jpg (509 KB) You must be logged in to download this attachment.
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    #3 16951084
    SP7SEC
    Level 29  
    Posts: 1011
    Help: 110
    Rate: 407
    Hello, this driver is not from this set, if you want to start it, for example using the easystart E. The watch from the photo implements the switching mode by providing 24v on the yellow cable, and you do not have one in the set. I am also 100 percent not sure if it will fire like this because I can also see CAN lines and she can block ADR and provide information about the fuel level because with these new inventions, even in the websites they are not able to say how it really is. By the way, the diagnostics in Man are on the blue cable with a yellow stripe
  • #4 16963717
    Sebastian Kowalski
    Level 10  
    Posts: 144
    Rate: 78
    The main question is whether you can somehow connect these two things, CAN to be exact - can you put it together somehow.
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  • #5 17636869
    hagio
    Level 12  
    Posts: 73
    Rate: 8
    I don't think there is CAN anywhere. as far as I know, the CAN bus is twisted together, and in the photos I do not see such wires.
    By the way, I will connect to the topic.
    my patient D4S from Mercedes two original round plugs in the photo. I bought a harness with a micro switch, heating / ventilation and a knob. The stove does not start yet - something is heard when turned on as if a relay and that's all, I'm waiting for a fuel pump from eberspacher because apparently from Webasto it will not go with this stove. Question because I have a webasto / eberspacher 12v / 24v interface I do not know how to connect the diagnosis in the rib and what soft this device to check. Do you need any drivers for the interface? EDiTH on xp somehow does not find the stove. I read that the diagnosis in white and blue should be connected, but I do not know if only K-line, why the wire marked V in the interface?. Below a few photos.
    Attachments:
    • Eberspacher AIRTRONIC M D4S: Cable Colors, MAN Truck Heater, Driver & Device Details olx_image_2018-12-18_12-16-55.jpg (489.97 KB) You must be logged in to download this attachment.
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  • #6 17723746
    hagio
    Level 12  
    Posts: 73
    Rate: 8
    Approx. topic resolved. bundle and mini controller bought on a well-known website with advertisements - a small hint from a seller from Starachowice. MTM-Wrocław fuel pump, maybe I was unlucky because she returned to complaints. Below are photos how to connect the contraption.
    Attachments:
    • Eberspacher AIRTRONIC M D4S: Cable Colors, MAN Truck Heater, Driver & Device Details 15482537498721167807318.jpg (435.22 KB) You must be logged in to download this attachment.
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  • #7 17795982
    chy
    Level 12  
    Posts: 73
    Rate: 16
    Hello,
    I need an AIRTRONIC M D4S pinout from MAN. - will you help?

    Greetings
    Crimea

    Sebastian Kowalski wrote:
    Hello colleagues!
    I got an Eeberspracher heater, model AIRTRONIC M D4S, disassembled from the MAN truck. The set includes a driver, and both he and the device have only dice, no description. I got the driver somehow but I have a question with the device, where is it when it comes to the colors of the cables?
    I am throwing photos below
    Eberspacher AIRTRONIC M D4S: Cable Colors, MAN Truck Heater, Driver & Device Details Eberspacher AIRTRONIC M D4S: Cable Colors, MAN Truck Heater, Driver & Device Details Eberspacher AIRTRONIC M D4S: Cable Colors, MAN Truck Heater, Driver & Device Details Eberspacher AIRTRONIC M D4S: Cable Colors, MAN Truck Heater, Driver & Device Details
  • #8 17796286
    hagio
    Level 12  
    Posts: 73
    Rate: 8
    take a look here. (Google does not hurt)
    Attachments:
    • 2013_Espar_AirtronicD2-D4_Repair_Manual.pdf (2.64 MB) You must be logged in to download this attachment.
    • Airtronic_D2_D4_workshop_manual_2.pdf (3.71 MB) You must be logged in to download this attachment.
  • #9 17799499
    chy
    Level 12  
    Posts: 73
    Rate: 16
    hagio wrote:
    take a look here. (Google does not hurt)


    Man uses his drivers and plugs are different than standard ribs, if I had a car and not the stove itself, it would be a breeze. You gave pdfs, but the pinout is there for the standard eber drivers, and I need it specifically for this because, for example, there is no yellow cable going to the stove, and I will not do the lottery on how to turn them on.

    Greetings
  • #10 17799750
    hagio
    Level 12  
    Posts: 73
    Rate: 8
    chy wrote:
    hagio wrote:
    take a look here. (Google does not hurt)


    Man uses his drivers and plugs are different than standard ribs, if I had a car and not the stove itself, it would be a breeze. You gave pdfs, but the pinout is there for the standard eber drivers, and I need it specifically for this because, for example, there is no yellow cable going to the stove, and I will not do the lottery on how to turn them on.

    Greetings

    mine is from Merca, round plugs, so in all-rawno you have yellow, blue, green, brown, red, pink. etc etc. color into color and ride. my plug is shown too, so you shouldn't have any problem. And Man's service diagrams, I doubt anyone has. If you want, you can do it from me. brown mass red 12v. white and blue diagnosis at the beginning .....
  • #11 17800040
    chy
    Level 12  
    Posts: 73
    Rate: 16
    look at the attachment I wrote out nicely

    hagio wrote:
    chy wrote:
    hagio wrote:
    take a look here. (Google does not hurt)


    Man uses his drivers and plugs are different than standard ribs, if I had a car and not the stove itself, it would be a breeze. You gave pdfs, but the pinout is there for the standard eber drivers, and I need it specifically for this because, for example, there is no yellow cable going to the stove, and I will not do the lottery on how to turn them on.

    Greetings

    mine is from Merca, round plugs, so in all-rawno you have yellow, blue, green, brown, red, pink. etc etc. color into color and ride. my plug is shown too, so you shouldn't have any problem. And Man's service diagrams, I doubt anyone has. If you want, you can do it from me. brown mass red 12v. white and blue diagnosis at the beginning .....
    Attachments:
    • eber.pdf (352.3 KB) You must be logged in to download this attachment.
  • #12 17800070
    miler80
    Level 34  
    Posts: 2142
    Help: 272
    Rate: 1385
    You can only fire this stove from MAN on the table digitally.
  • #13 17800246
    hagio
    Level 12  
    Posts: 73
    Rate: 8
    miler80 wrote:
    You can only fire this stove from MAN on the table digitally.

    how about mine with Merca?
  • #14 19843376
    lukamk47
    Level 2  
    Posts: 3
    Rate: 5
    Colleagues, what do I need to start airtronica m d4s on the table I have a pump and a 24v battery after connecting brown minus red plus yellow plus and green red for the pump second pump pin to bronze minus nothing happens?
  • #15 19843563
    miler80
    Level 34  
    Posts: 2142
    Help: 272
    Rate: 1385
    What is this furnace taken out of? After the connection as you specified, it should start, provided that the engine and the rest are operational.
  • #16 19843601
    lukamk47
    Level 2  
    Posts: 3
    Rate: 5
    From the mana tga in the car, it works on the table, it's like the simple one with two plugs
  • #17 19843963
    miler80
    Level 34  
    Posts: 2142
    Help: 272
    Rate: 1385
    You won't run it that way if it's from MAN.
  • #18 19844657
    lukamk47
    Level 2  
    Posts: 3
    Rate: 5
    How can I run?
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Topic summary

✨ The discussion revolves around the Eberspacher AIRTRONIC M D4S heater, specifically regarding the cable color coding and compatibility with a MAN truck. Users share their experiences with wiring, including the identification of cable colors such as red, brown, blue, and green/red, and the challenges of connecting the heater to the driver. There are mentions of diagnostic lines and the need for specific drivers for MAN vehicles, as well as issues with starting the heater on a test bench. Some users inquire about pinouts and compatibility with other brands like Webasto, while others discuss the necessity of proper connections for functionality. The conversation highlights the complexity of integrating the heater with existing systems and the lack of clear documentation for MAN-specific configurations.
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FAQ

TL;DR: Most MAN AIRTRONIC M D4S units expect 24 V on the yellow start lead; “Diagnostics in Man are on the blue cable with a yellow stripe.” [Elektroda, SP7SEC, post #16951084]

Why it matters: This FAQ helps retrofitters bench‑run or rewire truck‑pulled D4S heaters without guessing pinouts or frying hardware.

Quick Facts

How do I power on a MAN-spec AIRTRONIC M D4S?

Provide main power and a 24 V start signal on the yellow lead from a compatible controller. The same harness exposes a blue/yellow-stripe diagnostic wire. Without the proper start line, the heater will not initiate. [Elektroda, SP7SEC, post #16951084]

Which wire is the diagnostic line on MAN trucks?

Use the blue wire with a yellow stripe for diagnostics. As one expert put it, “Diagnostics in Man are on the blue cable with a yellow stripe.” Connect your interface there for fault reading. [Elektroda, SP7SEC, post #16951084]

Can I bench‑run a MAN D4S with just +24 V, ground, and the pump?

No. MAN versions typically won’t start with simple wiring on a bench. They expect digital control from the vehicle system or a matching controller. Users report failure when trying basic power and pump hookups. [Elektroda, miler80, post #19843963]

How do I bench‑start a non‑MAN D4S (e.g., Mercedes harness)?

Color‑to‑color wiring works.
  1. Brown to ground; red to battery + (match 12 V/24 V to unit).
  2. Use white/blue as the diagnosis/start interface per your controller.
  3. Verify fan, glow, and pump sequencing before fueling. “Brown mass red 12v. white and blue diagnosis at the beginning.” [Elektroda, hagio, post #17799750]

What wire colors feed the fuel pump and power on MAN looms?

Reports show red as positive supply, thick browns as grounds, and green/red for the metering pump. This matches multiple bench notes from owners of MAN harnesses removed from trucks. [Elektroda, Sebastian Kowalski, post #16946220]

Does the AIRTRONIC M D4S use CAN bus here?

One contributor saw no twisted-pair wiring typical of CAN in the shared photos and harness. That suggests the shown setup did not expose CAN lines externally. Visual inspection drives this conclusion. [Elektroda, hagio, post #17636869]

Which controller should I use to start it?

A compatible Eberspächer controller like EasyStart E can assert the required start voltage. The referenced watch/unit provides 24 V on the yellow control line. Mismatched vehicle clocks may not work. [Elektroda, SP7SEC, post #16951084]

Why does my MAN D4S work in the truck but not on the table?

Because the MAN unit expects the truck’s digital control logic. Without that, applying power and pump wiring alone won’t trigger the startup sequence on a bench. Use a suitable digital controller. [Elektroda, miler80, post #17800070]

How do I connect a diagnostic interface (K‑line style)?

Use the blue/yellow‑stripe diagnostic lead on MAN, or white/blue noted on other looms. Tie ground to brown, and ensure supply voltage matches the heater. Then interrogate with your service software. [Elektroda, hagio, post #17799750]

Can I run a D4S with a Webasto fuel pump?

A user reported that a Webasto pump would not operate correctly with this D4S. Plan for an Eberspächer‑spec pump to ensure proper dosing and start reliability. [Elektroda, hagio, post #17636869]

Is there a simple pinout for MAN AIRTRONIC M D4S?

MAN uses its own drivers and plugs, so standard Eberspächer PDFs don’t directly apply. Practical mapping: brown = ground, red = +, blue/yellow‑stripe = diagnostics; control yellow needs 24 V. [Elektroda, SP7SEC, post #16951084]

What’s an edge case I should know about with pumps?

Aftermarket pump quality can vary. One MTM‑Wrocław pump failed early and was returned under complaint. Keep your original or source a proven OEM unit when possible. [Elektroda, hagio, post #17723746]

How many plugs should I expect on different OEM looms?

Mercedes-sourced D4S units show two original round plugs. A MAN user also referenced a simpler two‑plug variant when discussing bench testing. That helps identify harness families. [Elektroda, lukamk47, post #19843601]

Can I combine the MAN driver and a different D4S device via CAN?

One user asked about joining them over CAN. Another noted the photos lacked twisted CAN pairs, so the presented set likely doesn’t expose CAN. Verify loom type before attempting. [Elektroda, hagio, post #17636869]

What’s the quickest way to decide if my unit needs digital start?

If applying battery power, ground, and pump wiring does nothing, assume digital start is required. MAN-sourced heaters often need that external logic to run. [Elektroda, miler80, post #19843963]
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