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Wiring Diagram AUDI A6 2003 - Control and display unit for air conditioning system
| E87 | Control and display unit for air conditioner |
| J220 | Motronic control unit |
| J248 | Diesel direct injection system control unit |
| J285 | Control unit with display in dash panel insert |
| T10p | 10-pin connector, black, connector point, electronics box, plenum chamber |
| T17h | 17-pin connector, brown, connector point, A pillar, left |
| T17k | 17-pin connector, red, connector point, electronics box, plenum chamber |
| T32 | 32-pin connector, blue, on dash panel insert |
| 135 | Earth connection -2-, in dash panel wiring harness |
| 199 | Earth connection -3-, in dash panel wiring harness |
| * | Models with 2.7 litre engine - ARE, BES |
| ** | Models with 4.2 l litre engine - ASG, ANK |
| *** | Models with 2.4 litre engine - AMM, ASM, BDV |
| # | Models with 2.5 litre TDI engine - AKE (allroad), BAU, BDH |
| ## | Models with 1.8 litre engine - AWT |
| ### | Both possible |
Wiring Diagram AUDI A6 2003 - Solar cell isolation relay - fresh air blower - solar roof
| C20 | Solar cells |
| E87 | Control and display unit for air conditioner |
| J126 | Fresh air blower control unit |
| J309 | Solar cell isolation relay |
| J347 | Ultra-sonic sensor control unit |
| J355 | Solar operation control unit |
| S15 | Fuse in fuse box |
| T2ds | 2-pin connector, blue, connector point, A pillar, right |
| T17 | 17-pin connector, orange, connector point, A pillar, right |
| V2 | Fresh air blower |
| 112 | Earth connection -2-, in air conditioner wiring harness |
| 135 | Earth connection -2-, in dash panel wiring harness |
| 199 | Earth connection -3-, in dash panel wiring harness |
| A1 | Positive (+) connection (30a), in dash panel wiring harness |
| A52 | Positive (+) connection 2 (30), in dash panel wiring harness |
| L2 | Connection, in air conditioner wiring harness |
| L10 | Connection -2-, in air conditioner wiring harness |
| * | Models with solar roof |
| ** | Models without solar roof |
| *** | Models with anti-theft alarm system |
| # | Both possible |
Wiring Diagram AUDI A6 2003 - Air conditioning system magnetic coupling - magnetic coupling relay - ambient temperature sensor
| E87 | Control and display unit for air conditioner |
| G17 | Ambient temperature sensor |
| G89 | Fresh air intake duct temperature sensor |
| G107 | Sunlight penetration photo sensor |
| G192 | Vent temperature sender, footwell |
| J44 | Magnetic coupling relay |
| N25 | Air conditioning system magnetic coupling |
| S225 | Fuse 25 in fuse box |
| S226 | Fuse 26 in fuse box |
| T10ba | 10-pin connector, blue, connector point, A pillar, left |
| T17h | 17-pin connector, brown, connector point, A pillar, left |
| Z1 | Heated rear window |
| 112 | Earth connection -2-, in air conditioner wiring harness |
| A69 | Connection (air conditioner control), in dash panel wiring harness |
| L4 | Connection (75 a), in air conditioner wiring harness |
| * | Models with solar roof |
Wiring Diagram AUDI A6 2003 - Air recirculation flap control motor - control motor for right temperature flap - vent temperature senders - air quality sensor
| D | Ignition/starter switch |
| E87 | Control and display unit for air conditioner |
| G143 | Air recirculation flap control motor potentiometer |
| G150 | Left vent temperature sender |
| G151 | Right vent temperature sender |
| G221 | Right temperature flap control motor potentiometer |
| G238 | Air quality sensor |
| J285 | Control unit with display in dash panel insert |
| S5 | Fuse in fuse box |
| T10e | 10-pin connector, purple, connector point, A pillar, left |
| T32a | 32-pin connector, green, on dash panel insert |
| V113 | Air recirculation flap control motor |
| V159 | Temperature flap control motor, right |
| 112 | Earth connection -2-, in air conditioner wiring harness |
| 261 | Earth connection, in heated washer jet wiring harness |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A20 | Connection (15a), 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) |
Wiring Diagram AUDI A6 2003 - Control motors - potentiometers
| E87 | Control and display unit for air conditioner |
| G112 | Central flap control motor potentiometer |
| G135 | Defroster flap control motor potentiometer |
| G220 | Left temperature flap control motor potentiometer |
| J285 | Control unit with display in dash panel insert |
| T16a | 16-pin connector, diagnosis connection |
| T32a | 32-pin connector, green, on dash panel insert |
| V70 | Central flap control motor |
| V107 | Defroster flap control motor |
| V158 | Temperature flap control motor, left |
| A159 | Connection (L), in dash panel wiring harness |
| L9 | Connection -1-, in air conditioner wiring harness |
| * | Models with 2.7 litre engine - ARE, BES |
| ** | Models with 4.2 l litre engine - ASG, ANK |
| *** | Models with 2.4 litre engine - AMM, ASM, BDV |
| # | Models with 2.5 litre TDI engine - AKE (allroad), BAU, BDH |
| ## | Models with 1.8 litre engine - AWT |
Wiring Diagram AUDI A6 2003 - Control and display unit for air conditioning system - air flow flap control motor - fuses 3 and 4
| E1 | Lighting switch |
| E22 | Intermittent wiper switch |
| E87 | Control and display unit for air conditioner |
| G113 | Air flow flap control motor potentiometer |
| J31 | Automatic intermittent wash/wipe relay |
| J220 | Motronic control unit |
| J248 | Diesel direct injection system control unit |
| S3 | Fuse in fuse box |
| S4 | Fuse in fuse box |
| T10e | 10-pin connector, purple, connector point, A pillar, left |
| T17k | 17-pin connector, red, connector point, electronics box, plenum chamber |
| V | Windscreen wiper motor |
| V71 | Air flow flap control motor |
| A53 | Positive (+) connection (58), in dash panel wiring harness |
| A96 | Connection (53c), in dash panel wiring harness |
| L9 | Connection -1-, in air conditioner wiring harness |
| * | Models with petrol engine |
| ** | Models with diesel engine |
Wiring Diagram AUDI A6 2003 - Illumination for dash panel vents
| E1 | Lighting switch |
| J285 | Control unit with display in dash panel insert |
| L67 | Dash panel left vent illumination |
| L68 | Dash panel central vent illumination |
| L69 | Dash panel right vent illumination |
| L87 | Central rear vent illumination |
| T2f | 2-pin connector, brown, behind dash panel, right |
| T2h | 2-pin connector, black, in centre console |
| T2n | 2-pin connector, brown, behind dash panel, centre |
| T2o | 2-pin connector, brown, behind dash panel, left |
| T32 | 32-pin connector, blue, on dash panel insert |
| 135 | Earth connection -2-, in dash panel wiring harness |
| 199 | Earth connection -3-, in dash panel wiring harness |
| 213 | Earth connection -4-, in dash panel wiring harness |
| A19 | Connection (58s), in dash panel wiring harness (switch illumination) |
| * | Both possible |
Wiring Diagram AUDI A6 2003 - Engine cooling for petrol engines - 2.7 litre bi-turbo engine (ARE / BES)
| C | Alternator |
| F18 | Radiator fan thermo-switch |
| F54 | Radiator fan thermo-switch |
| F95 | Thermo-switch for continued coolant circulation |
| G65 | High pressure sender |
| J293 | Radiator fan control unit, in engine compartment, front left |
| S42 | Radiator fan single fuse |
| T2by | 2-pin connector, on radiator fan control unit |
| T6ao | 6-pin connector, on radiator fan control unit |
| T10n | 10-pin connector, orange, connector point, electronics box, plenum chamber |
| T14a | 14-pin connector, black, in engine compartment, front left |
| T17h | 17-pin connector, brown, connector point, A pillar, left |
| V7 | Radiator fan |
| V51 | Continued coolant circulation pump |
| V177 | Radiator fan -2- |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| 193 | Earth connection -1-, in radiator fan wiring harness |
| 194 | Earth connection -2-, in radiator fan wiring harness |
| A17 | Connection (61), in dash panel wiring harness |
| D167 | Connection (radiator fan stage I), in engine compartment wiring harness |
Wiring Diagram AUDI A6 2003 - Engine cooling with radiator fan control unit for petrol engines - 4.2 litre engine (ASG / ANK / BCY)
| C | Alternator |
| F18 | Radiator fan thermo-switch |
| F54 | Radiator fan thermo-switch |
| G65 | High pressure sender |
| J293 | Radiator fan control unit, in engine compartment, front left |
| S42 | Radiator fan single fuse |
| T2by | 2-pin connector, on radiator fan control unit |
| T6ao | 6-pin connector, on radiator fan control unit |
| T17h | 17-pin connector, brown, connector point, A pillar, left |
| V7 | Radiator fan |
| V177 | Radiator fan 2 |
| 44 | Earth point, A pillar, bottom left |
| 193 | Earth connection 1, in radiator fan wiring harness |
| A17 | Connection (61), in dash panel wiring harness |
| D167 | Connection (radiator fan stage I), in engine compartment wiring harness |
Wiring Diagram AUDI A6 2003 - Engine cooling with radiator fan relay for petrol engines - 2.4 litre engine (ASM / AMM / BDV)
| F18 | Radiator fan thermo-switch |
| F54 | Radiator fan thermo-switch |
| G65 | High pressure sender |
| J26 | Radiator fan relay |
| J101 | Radiator fan 2nd speed relay |
| N39 | Radiator fan series resistor |
| S42 | Radiator fan single fuse |
| S142 | Radiator fan control unit fuse |
| T14a | 14-pin connector, black, in engine compartment, front left |
| T17h | 17-pin connector, brown, connector point, A pillar, left |
| V7 | Radiator fan |
| 44 | Earth point, A pillar, bottom left |
| 193 | Earth connection 1, in radiator fan wiring harness |
| 194 | Earth connection 2, in radiator fan wiring harness |
| D167 | Connection (radiator fan stage I), in engine compartment wiring harness |
Wiring Diagram AUDI A6 2003 - Engine cooling for diesel engines - 2.5 litre TDI engine (AKE) allroad models - (BAU - BDH)
| F18 | Radiator fan thermo-switch |
| F54 | Radiator fan thermo-switch |
| G65 | High pressure sender |
| J26 | Radiator fan relay |
| J101 | Radiator fan 2nd speed relay |
| J138 | Radiator fan run-on relay |
| J248 | Diesel direct injection system control unit |
| N39 | Radiator fan series resistor |
| S42 | Radiator fan single fuse |
| S102 | Engine control unit fuse |
| S142 | Radiator fan control unit fuse |
| T10n | 10-pin connector, orange, connector point, electronics box, plenum chamber |
| T14a | 14-pin connector, black, in engine compartment, front left |
| T17h | 17-pin connector, brown, connector point, A pillar, left |
| V7 | Radiator fan |
| 44 | Earth point, lower part of left A pillar |
| 194 | Earth connection -2-, in radiator fan wiring harness |
| A99 | Connection -1- (87), in dash panel wiring harness |
| D168 | Connection (radiator fan stage II), in engine compartment wiring harness |
Wiring Diagram AUDI A6 2003 - Engine cooling for petrol engines - 1.8 litre engine (AWT)
| F18 | Radiator fan thermo-switch |
| F54 | Radiator fan thermo-switch |
| G65 | High pressure sender |
| J26 | Radiator fan relay |
| J101 | Radiator fan 2nd speed relay |
| N39 | Radiator fan series resistor |
| S42 | Radiator fan single fuse |
| S142 | Radiator fan control unit fuse |
| T14a | 14-pin connector, black, in engine compartment, front left |
| T17h | 17-pin connector, brown, connector point, A pillar, left |
| V7 | Radiator fan |
| 44 | Earth point, lower part of left A pillar |
| 193 | Earth connection -1-, in radiator fan wiring harness |
| 194 | Earth connection -2-, in radiator fan wiring harness |
| D168 | Connection (radiator fan stage II), in engine compartment wiring harness |