Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI2007A3 (8PA) L4-2.0L TURBO (BPY)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULEDIAGRAMS
2007 Audi A3 (8PA) L4-2.0L Turbo (BPY)
Engine Control Module: Diagrams
2007 Audi A3 (8PA) L4-2.0L Turbo (BPY)SECTION Diagrams
Control modules in front part of vehicle
SIMOS Control Module -J361- / Motronic Engine Control Module (ECM) -J220- / Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) -J248- / Engine Control Module (ECM) -J623-
Component Location:
In center plenum chamber -Arrow-
121-pin, Pin Arrangements:
A - Engine Control Module (ECM) -J623-
Connector:
B - 81-Pin Connector -T81-
C - 40-Pin Connector -T40-
Note:
• -T121- consists of items B and C.
154-pin, Pin Arrangements:
A - Engine Control Module (ECM)
Connector:
B - 94-Pin Connector -T94-
C - 60-Pin Connector -T60-
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.