Delphi DCM3.5 ECU AU71-12A650-AC – what to know
Unit AU71-12A650-AC (Delphi 28367357) controls the 2.0 TDCi engine in Ford cars. We test every unit before sending it to the customer.
Symptoms that may point to an ECU failure
- Diagnostics cannot connect to the ECU.
- The engine will not fire, the injectors get no signal.
- The fault appeared after water got in or after a short in the harness.
- The ECU has no power despite working fuses.
Keep in mind that the cause may also be the wiring, the power supply or a sensor. Diagnose first, then buy.
Vehicle compatibility
ECU AU71-12A650-AC may have been fitted to different Ford models, so compatibility is decided by the numbers on the label, not by the model and year of the car. Compare Ford number AU71-12A650-AC and number 28367357 with your ECU. If in doubt, send us a photo of the label before buying.
What happens after purchase
Once you have placed your order, send us the car’s VIN. We prepare the ECU with data from the Ford server and load the latest software – this service costs nothing extra.
The ECU is not plug & play. After fitting, the keys and VIN must be assigned in the PATS procedure using FORScan or Ford IDS. The warranty is 6 months.
Numbers to compare with your label
The housing of the original ECU carries a sticker with its numbers. On this unit they are:
- Ford number: AU71-12A650-AC / AU7112A650AC
- Delphi number: 28367357
- ECU type: Delphi DCM3.5
Before fitting, it is worth reading our guide Ford DCM3.5 ECU replacement and VIN programming. If your ECU has a different number, check AU71-12A650-AA (28272293), AG91-12A650-ABD (28264930), AG91-12A650-ABF (28270053), AG91-12A650-ABG (28278426) or the whole Ford DCM3.5 ECU collection. About the manufacturer: Delphi.
You will find other numbers in the Ford Engine Control Units (ECUs) category.
Common questions about ECU AU7112A650AC
How do I know that AU71-12A650-AC will fit?
Check the sticker on your ECU. If it shows AU71-12A650-AC and 28367357, the numbers match. The car model and year alone are not enough, as this number may have been used in several Fords. You can also send us a photo of the label.
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Can I just fit ECU AU7112A650AC and start the car?
No. The ECU is not plug & play – after fitting, PATS programming is needed, which means assigning the keys and VIN with FORScan or Ford IDS.
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Does ECU AU7112A650AC come with a warranty?
Yes – 6 months. The ECU is tested before shipping.
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Why give the VIN after ordering?
The VIN lets us prepare the ECU for your car with data from the Ford server and the latest software. The service is included in the price.
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