Wiring Diagram AUDI TT 2001 - Haldex coupling (02D) for quattro four-wheel drive
| C10 | Suppression filter |
| D | Ignition/starter switch |
| F | Brake light switch |
| F9 | Handbrake warning switch |
| J104 | ABS with EDL control unit |
| J492 | Four-wheel drive control unit |
| J508 | Brake light suppression relay |
| M9 | Brake light bulb, left |
| M25 | High level brake light bulb |
| S9 | Fuse in fuse box |
| S231 | Fuse 31 in fuse box |
| T8d | 8-pin connector, for four-wheel drive control unit |
| V184 | Oil pressure control motor |
| 238 | Earth connection -1-, in interior wiring harness, near luggage compartment light |
| 277 | Earth connection -3-, in interior wiring harness, behind dash panel |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A36 | Connection (75a), in dash panel wiring harness |
| A104 | Connection -2- (15), in dash panel wiring harness |
| A115 | Connection (handbrake warning), in dash panel wiring harness |
| B131 | Connection (54), in interior wiring harness |
| B185 | Connection -2- (54), in interior wiring harness |
| * | Models with ABS |
| ** | Models with ABS and ESP |
Wiring Diagram AUDI TT 2001 - Haldex coupling (02D) for quattro four-wheel drive
| G271 | Hydraulic temperature sender |
| J104 | ABS with EDL control unit |
| J218 | Combi-processor in dash panel insert |
| J220 | Motronic control unit |
| J492 | Four-wheel drive control unit |
| K14 | Handbrake warning lamp |
| S15 | Fuse in fuse box |
| T2 | 2-pin connector, on four-wheel drive |
| T8d | 8-pin connector, for four-wheel drive control unit |
| T10a | 10-pin connector, white, in plenum chamber |
| T16 | 16-pin connector, black, shelf on driver's side (diagnosis connection) |
| T25 | 25-pin connector, on ABS control unit |
| T32a | 32-pin connector, green, on dash panel insert |
| V181 | Haldex coupling pump |
| A50 | Positive (+) connection (30a), in dash panel wiring harness |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
| • | CAN bus (data wire) |
| * | Models with ABS |
| ** | Models with ABS and ESP |
| *** | As of model year 2001 no longer fitted |
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