Electrical diagrams of car Audi A4 B7 (since 2007)
Due to the variety of configuration options for the cars in question, diagrams for the 1.8 TFSI (CDHB) engine are provided below. Some diagrams are also suitable for other models, as indicated in the diagram title.
Color designations for wire insulation and fuses
Note: Due to the variety of configuration options for the vehicles in question, the diagrams below are for the 1.8 TFSI (CDHB) engine. Some diagrams are also...
Note: Due to the variety of configuration options for the vehicles in question, the diagrams below are for the 1.8 TFSI (CDHB) engine. Some diagrams are also...
Location of relays and fuses
13.1. Location of relay and fuse mounting blocks 1. Fuse holder A "SA" (see illustration 13.2), second battery fuse (near the second battery) and battery...
13.1. Location of relay and fuse mounting blocks 1. Fuse holder A "SA" (see illustration 13.2), second battery fuse (near the second battery) and battery...
Designations on diagrams
The number in the rectangle at the end of the wire indicates the coordinate of its connection. Symbolic designations CAN bus wire Numerical designations...
The number in the rectangle at the end of the wire indicates the coordinate of its connection. Symbolic designations CAN bus wire Numerical designations...
Engine management system 1.8 TFSI (CABA/CABB, CDHA/CDHB)
1-1 Battery, power relay terminals 15 # Up to 2009 issue. (inclusive) # # Since 2010. 1-2 Suppression filter, battery emergency shutdown squib, auxiliary...
1-1 Battery, power relay terminals 15 # Up to 2009 issue. (inclusive) # # Since 2010. 1-2 Suppression filter, battery emergency shutdown squib, auxiliary...
Radiator fan (400 W), for petrol models, from September 2007
2-1 Battery, battery control unit, battery cut-off squib, pr-l 2 in holder A, connection No.2 terminal 30, auxiliary battery start terminal 2-2 Main relay,...
2-1 Battery, battery control unit, battery cut-off squib, pr-l 2 in holder A, connection No.2 terminal 30, auxiliary battery start terminal 2-2 Main relay,...
6-speed AT (0B6), since September 2007
3-1 Voltage supply, AT control unit, CAN bus # # # # See fuse location ** For diesel models ***See ECM diagram 3-2 AT, ECM control units ***See ECM diagram 3-3...
3-1 Voltage supply, AT control unit, CAN bus # # # # See fuse location ** For diesel models ***See ECM diagram 3-2 AT, ECM control units ***See ECM diagram 3-3...
CVT (0AW), since September 2007
4-1 Power supply, ground connections ** For diesel models ***See ECM diagram # # # # See fuse location 4-2 CAN bus * Gradual change 4-3 ECM, comfort control...
4-1 Power supply, ground connections ** For diesel models ***See ECM diagram # # # # See fuse location 4-2 CAN bus * Gradual change 4-3 ECM, comfort control...
DSG (0B5), since September 2008
5-1 Fuses, mechatronics unit, ground connection * Section 1.5 is possible ** For diesel models ***See ECM diagram # # # # See fuse location 5-2 ECM, comfort...
5-1 Fuses, mechatronics unit, ground connection * Section 1.5 is possible ** For diesel models ***See ECM diagram # # # # See fuse location 5-2 ECM, comfort...
Suspension stiffness adjustment, since September 2007
6-1 Voltage supply, suspension stiffness control unit ** Only models with system "stop/start" (7L4) # Models up to 2009. (inclusive) # # Models from 2010...
6-1 Voltage supply, suspension stiffness control unit ** Only models with system "stop/start" (7L4) # Models up to 2009. (inclusive) # # Models from 2010...
ABS and ESP, from September 2007
7-1 "AUTO HOLD" switch # For LHD models # # For RHD models ** Section changed from 1.5 mm² to 2.5 mm² (gradual change) 7-2 Switch "TCS" and "ESP" **See basic...
7-1 "AUTO HOLD" switch # For LHD models # # For RHD models ** Section changed from 1.5 mm² to 2.5 mm² (gradual change) 7-2 Switch "TCS" and "ESP" **See basic...
Electromechanical parking brake, since September 2007
8-1 EPB control unit *No longer in use, gradual change ** only models with system "stop/start" (7L4) # Up to 2009 issue. (inclusive) ## Since 2010. 8-2 EPB...
8-1 EPB control unit *No longer in use, gradual change ** only models with system "stop/start" (7L4) # Up to 2009 issue. (inclusive) ## Since 2010. 8-2 EPB...
Dynamic steering, since November 2007
9-1 Active steering control unit, power steering motor 9-2 Active steering control unit, ESP sensor module, ABS control unit * AWD models only **Wire color...
9-1 Active steering control unit, power steering motor 9-2 Active steering control unit, ESP sensor module, ABS control unit * AWD models only **Wire color...
Multifunction steering wheel, from September 2007
10-1 Steering column electronics control unit, data bus diagnostic interface, control unit in instrument cluster insert *See ECM diagram 10-2 Steering wheel...
10-1 Steering column electronics control unit, data bus diagnostic interface, control unit in instrument cluster insert *See ECM diagram 10-2 Steering wheel...
Start-stop system, since May 2009
11 Voltage stabilizer, relay interior mirror with automatic dimming switch "Start/Stop" *See ECM diagram *2 See fuse box diagram 3 See basic equipment diagram
11 Voltage stabilizer, relay interior mirror with automatic dimming switch "Start/Stop" *See ECM diagram *2 See fuse box diagram 3 See basic equipment diagram
Adaptive Cruise Control (ACC), since September 2007
12 Adaptive temperature control # Only models c "Lane assist" # # see CAN diagram # # # Only models with remote control
12 Adaptive temperature control # Only models c "Lane assist" # # see CAN diagram # # # Only models with remote control
CAN bus, since September 2007
13-1 CAN powertrain, interior 13-2 CAN information system, interior * With "Premium" audio amplifier ** With standard audio amplifier 13-3,13-4 CAN comfort...
13-1 CAN powertrain, interior 13-2 CAN information system, interior * With "Premium" audio amplifier ** With standard audio amplifier 13-3,13-4 CAN comfort...
Diagnostic connector, since September 2007
14-1 Power supply, diagnostic interface *See diagnostic diagram, ring interruption ** fiber optic conductor, ring information bus ***See ECM diagram #/# # Up...
14-1 Power supply, diagnostic interface *See diagnostic diagram, ring interruption ** fiber optic conductor, ring information bus ***See ECM diagram #/# # Up...
2-zone climate control system, since September 2007
15-1 Climate control module, fan ***See ECM diagram 15-2 Climate control module, rear temperature control potentiometer # Possible section 0.35 * For models...
15-1 Climate control module, fan ***See ECM diagram 15-2 Climate control module, rear temperature control potentiometer # Possible section 0.35 * For models...
Heated and ventilated seats, from September 2007
16-1 Driver's seat heating * Models without seat ventilation **No longer in use, gradual change *** Gradual change 16-2 Driver's seat ventilation * Models with...
16-1 Driver's seat heating * Models without seat ventilation **No longer in use, gradual change *** Gradual change 16-2 Driver's seat ventilation * Models with...
Additional heater, since September 2007
17-1 Additional heater control unit, circulation pump 17-2 Additional heater control unit, receiver and antenna Additional heater remote control * According to...
17-1 Additional heater control unit, circulation pump 17-2 Additional heater control unit, receiver and antenna Additional heater remote control * According to...
Driver's seat, since September 2007
18-1 Steering column and driver's seat adjustment control unit with memory function * For models with QQ1 equipment **See Basic Equipment Diagrams # No longer...
18-1 Steering column and driver's seat adjustment control unit with memory function * For models with QQ1 equipment **See Basic Equipment Diagrams # No longer...
Parking assistance system, since September 2007
19-1 Front sensors, front buzzer * Models with front and rear sensors 19-2 Rear sensors and rear buzzer # Up to 2009 issue. (inclusive) ## Since 2010. 19-3...
19-1 Front sensors, front buzzer * Models with front and rear sensors 19-2 Rear sensors and rear buzzer # Up to 2009 issue. (inclusive) ## Since 2010. 19-3...
Xenon headlights with cornering light and automatic levelling, from September 2007
20-1 Voltage supply, powertrain CAN bus * Up to 2009 issue. (inclusive) ** Since 2010. 20-2 Vehicle tilt sensor * Models with electronic damping control,...
20-1 Voltage supply, powertrain CAN bus * Up to 2009 issue. (inclusive) ** Since 2010. 20-2 Vehicle tilt sensor * Models with electronic damping control,...
Basic equipment, since September 2007
21-1 Entry and Engine Start Authorization Switch, Fuse #6 in Holder D 21-2 Control unit in instrument panel insert, radio clock *2 Since May 2009. *3 Before...
21-1 Entry and Engine Start Authorization Switch, Fuse #6 in Holder D 21-2 Control unit in instrument panel insert, radio clock *2 Since May 2009. *3 Before...
Comfort systems (anti-theft alarm, single lock, electric window lifts and mirror adjustment), since 2007
22-1 Comfort systems control unit, entry and engine start authorization button, right entry and engine start authorization antenna * Models with AT/CVT/DSG #...
22-1 Comfort systems control unit, entry and engine start authorization button, right entry and engine start authorization antenna * Models with AT/CVT/DSG #...
SRS, since September 2007
23-1 Driver and front passenger airbags *** Grounding via the housing # Up to 2009 issue. (inclusive) # # Since 2010. 23-2 Inflatable curtain 23-3 Seat belt...
23-1 Driver and front passenger airbags *** Grounding via the housing # Up to 2009 issue. (inclusive) # # Since 2010. 23-2 Inflatable curtain 23-3 Seat belt...
Audio system (standard), from September 2007
24-1 Audio unit, telephone transceiver 24-2 Display module, audio unit *Additional equipment 24-3 Sound processing module, diagnostic interface, audio block *2...
24-1 Audio unit, telephone transceiver 24-2 Display module, audio unit *Additional equipment 24-3 Sound processing module, diagnostic interface, audio block *2...
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