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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSAUDI2012A7REPAIR AND DIAGNOSISELECTRICALWIRING DIAGRAMSELECTRICAL COMPONENTS LOCATIONS & CONNECTOR END VIEWSCOMP. LOC. VEHICLE FRONT MODULESCATALYTIC CONVERTER HEATING CONTROL MODULE 1 J1021CATALYTIC CONVERTER HEATING CONTROL MODULE 1 -J1021-, CONNECTOR VIEWS
2012 Audi A7
Catalytic Converter Heating Control Module 1 -J1021-, Connector Views
2012 Audi A7SECTION Catalytic Converter Heating Control Module 1 -J1021-, Connector Views
Double Connector -T2qc-/4-Pin Connector -T4gk-/Double Connector -T2qb-
| T4gk (B) | Designation |
|---|---|
| 1 | CAN-Bus powertrain, High E123 Powertrain CAN-Bus High Connection 1 (in engine wiring harness) |
| 2 | Terminal 31, to 714 Ground connection on engine, right |
| 3 | CAN-Bus powertrain, Low E124 Powertrain CAN-Bus Low Connection 1 (in engine wiring harness) |
| 4 | Terminal 87, from D181 Connection 2 (87a) (in engine compartment wiring harness) |
| T2qc (A) | Designation |
|---|---|
| 1 | Catalytic converter heater 1 Z119 |
| 2 | Catalytic converter heater 2 Z120 |
| T2qb (C) | Designation |
|---|---|
| 1 | Terminal 30 Wire Junction TV2 Catalytic converter heating fuse S351 |
| 2 | Terminal 30 Wire Junction TV2 Catalytic converter heating fuse 2 S354 |
RENDER: 1.0x
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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.