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 MANUALSAUDI2012A7REPAIR AND DIAGNOSISELECTRICALWIRING DIAGRAMSELECTRICAL COMPONENTS LOCATIONS & CONNECTOR END VIEWSCOMP. LOC. VEHICLE FRONT MODULESFRESH AIR BLOWER CONTROL MODULE J126FRESH AIR BLOWER CONTROL MODULE -J126-, CONNECTOR VIEWS

2012 Audi A7

Fresh Air Blower Control Module -J126-, Connector Views

2012 Audi A7SECTION Fresh Air Blower Control Module -J126-, Connector Views

4-Pin Connector -T4cb-

Courtesy of AUDI OF AMERICA, LLC

T4cb (A)	Designation
1	Terminal 31, to 81 Ground Connection 1 (in instrument panel wiring harness) 45 Ground Connection (behind instrument panel, center)
2
3	Terminal 30, from Fuse Panel C SC
4	Climatronic Control Module J255

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.