Audi TT MK1 (8N) control units
Motronic and Climatronic control units, airbags, headlights, central locking, ABS and sensors.
Control unit locations - Overview
| Number | Component / Function |
|---|---|
| 1 | J220 - Motronic engine control unit |
| 2 | Main fuse box |
| 3 | E87 - Air conditioner control and display unit, Climatronic |
| 4 | Relay protection box |
| 5 | J234 - Airbag control unit |
| 6 | G209 - Ultrasonic sensor for the Coupe anti-theft alarm system |
| 7 | G303 - Transmission/reception module 1 for monitoring the interior of the Roadster |
| 8 | J431 - Headlight range control unit |
| 9 | J210 - Left heated door lock control unit |
| 10 | J429 - Central locking control unit |
| 11 | G76 - Left rear level sensor |
| 12 | J285 - Instrument cluster control unit |
| 13 | Fuse holder |
| 14 | Connector station, A-pillar |
| 15 | Auxiliary fuse and relay carrier |
| 16 | G78 - Left front level sensor |
| 17 | J104 - ABS control unit |
| 18 | V48 - Gas-discharge headlights with left headlight range adjustment motor. V49 - Right headlight range adjustment motor J343 - Left gas-discharge headlight control unit J344 - Right gas-discharge headlight control unit |
| 19 | J530 - Garage door opener control unit |
Mounting locations
J220 - Motronic engine control unit
in the centre of the plenum chamber (position 1)
Main fuse box
On the battery
E87 - Air conditioner control and display unit, Climatronic
in the center console at the bottom (position 2)
Relay protection box
in the engine compartment, on the left side of the bulkhead
J234 - Airbag control unit
under the central console, on the tunnel (position 1)
G209 - Ultrasonic sensor for the Coupe anti-theft alarm system
behind the interior light
G303 - Roadster cabin monitoring module
in the center console, under the hand brake lever handle bowl
J431 - Coupe headlight range control unit
under the rear seat (position 1)
J431 - Roadster headlight range control unit
behind the luggage compartment cover, front side (position 1)
J210 - Left heated door lock control unit
on the upper rail of the driver's door (position 1)
J429 - Coupe central locking control unit
behind the side coating on the driver's side (position 2)
J379 - Roadster central locking control unit
on the bulkhead between the backrest and the hood storage tray behind the passenger seat
G76 - Left rear level sensor - front-wheel drive
on the left rear suspension arm (position 1)
G76 - Left rear level sensor - all-wheel drive
on the left rear suspension arm
J285 - Instrument cluster control unit
integrated into the instrument cluster
Fuse holder
on the dashboard to the left
Coupling station, A-pillar, left side
in the floor area, left side, on the A-pillar
Coupling station, pillar A, right side
in the floor area, right side, on the A-pillar
Auxiliary fuse and relay carrier
behind the storage compartment on the driver’s side
G78 - Left front level sensor
on the left suspension arm of the front axle (position 2)
J104 - ABS control unit
in the engine compartment, left side above the spar
V48, V49 and J343 Litronik 2.1
behind the left and right headlights
V48, V49 and J343 Litronik 4.0 headlights
on the left and right headlights (arrow)
J530 - Garage door opener control unit
behind the bumper, front right side