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.DBβ LIVE
HOMESERVICE MANUALSAUDI2012A4 SEDAN (8K2) L4-2.0L TURBO (CAEB)REPAIR AND DIAGNOSISDIAGRAMSELECTRICAL DIAGRAMSPOWERTRAIN MANAGEMENTDATA LINK CONNECTORDIAGRAM 11/4 (TRACKS 29-42)
2012 Audi A4 Sedan (8K2) L4-2.0L Turbo (CAEB)
Diagram 11/4 (Tracks 29-42)
2012 Audi A4 Sedan (8K2) L4-2.0L Turbo (CAEB)SECTION Diagram 11/4 (Tracks 29-42)
IMPORTANT NOTE:
This manufacturer uses "Track" style wiring diagrams.
For information on how to use these diagrams effectively, please refer to Diagram Information and Instructions. Diagram Information and Instructions
Data bus on board diagnostic interface
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li = lilac
ge = yellow
or = orange
rs = pink
J234 - Airbag control module Overview of Control Modules in Interior of Vehicle
J519 - Vehicle electrical system control module Overview of Control Modules in Interior of Vehicle
J533 - Data bus on board diagnostic interface Overview of Control Modules in Interior of Vehicle
ST1 - Fuse panel 1
ST2 - Fuse panel 2
SD7 - Fuse 7 (on fuse panel D) Overview Of Fuses
SD11 - Fuse 11 (on fuse panel D) Overview Of Fuses
T16 - 16-pin connector Overview of Control Modules in Interior of Vehicle
T16b - 16-pin connector Vehicle Electrical System Control Module -J519-
T17b - 17-pin connector, blue Overview Of Connector Stations
T17e - 17-pin connector, red Overview Of Connector Stations
T20d - 20-pin connector Locations
T100 - 100-pin connector Locations
(135) - Ground connection 2 (in instrument panel wiring harness)
(687) - Ground connection 1 on center tunnel Overview of Ground Connections (4-door Models (Sedan))
(B383) - Powertrain CAN bus high connection 1 (in main wiring harness)
(B390) - Powertrain CAN bus low connection 1 (in main wiring harness)
* - Refer to applicable airbag wiring diagram
*2 - Refer to applicable wiring diagram for fuse positions
*3 - Refer to applicable standard equipment wiring diagram
*4 - Diagnostic connector
Previous Diagram 11/3 (Tracks 15-28)
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.