AUTOMOTIVE ELECTRICIANS

AUDI A4 2001 – Audi A4 (2.5 litre turbo-diesel engine, TDI, 110 kW, 6-cylinder), engine codes AKN . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI A4 2001 - Battery - starter - alternator



Wiring Diagram  AUDI A4 2001 - Battery - starter - alternator
ABattery
BStarter
CAlternator
C1Voltage regulator
DIgnition/starter switch
S5Fuse in fuse box/relay plate
S13Fuse in fuse box/relay plate
S231Fuse in fuse box
T1kSingle connector, black, in engine compartment, right
T2at2-pin connector, black, in engine compartment, right
T3y3-pin connector, black, in engine compartment, left
T1010-pin connector, brown, connector point, electronics box, plenum chamber
   11 Earth point, in battery box
   A2 Positive (+) connection (15), in dash panel wiring harness
   A32 Positive (+) connection (30), in dash panel wiring harness
   A86 Positive (+) connection (50a), in dash panel wiring harness
*Only models with manual gearbox
**Applicable up to model year 2000
***Applicable from model year 2001

Wiring Diagram AUDI A4 2001 - Diesel direct injection system control unit - diesel direct injection system relay - glow plugs



J52Glow plug relay
J248Diesel direct injection system control unit
J322Diesel direct injection system relay
Q6Glow plugs (engine)
S39Strip fuse 1 for glow plugs (engine)
S189Strip fuse 2 for glow plugs (engine)
T3aa3-pin connector, white, connector point, electronics box, plenum chamber
T3au3-pin connector, red, connector point, electronics box, plenum chamber
T10m10-pin connector, black, connector point, electronics box, plenum chamber
T10ar10-pin connector, orange, connector point, electronics box, plenum chamber
   A40 Positive (+) connection -1- (30), in dash panel wiring harness
   D101 Connection -1-, in engine compartment wiring harness
   F26 Connection -2-, in diesel direct injection system wiring harness
   F28 Connection -3-, in diesel direct injection system wiring harness
   F33 Positive (+) connection (30), in diesel direct injection system wiring harness
*Applicable for 1999 model year
**Applicable for model year 2000 up to 11/99 (models with manual gearbox only)

Wiring Diagram AUDI A4 2001 - Diesel direct injection system control unit - needle lift sender - coolant temperature senders - charge air pressure sender



G2Coolant temperature sender
G31Charge air pressure sender
G62Coolant temperature sender
G80Needle lift sender
G93Gearbox oil temperature sender
J248Diesel direct injection system control unit
T2k2-pin connector, brown, in engine compartment
   12 Earth connection, in engine compartment, left
   156 Earth connection, in diesel direct injection wiring harness
*Applicable up to 1999 model year
**Applicable from model year 2000

Wiring Diagram AUDI A4 2001 - Diesel direct injection system control unit - brake light switch - cruise control system switch - injection pump control unit



E45Cruise control system switch
FBrake light switch
J138Radiator fan run-on relay
J248Diesel direct injection system control unit
J399Injection pump control unit
M9Brake light bulb, left
M10Brake light bulb, right
S102Fuse for engine electrics (diesel)
T6y6-pin connector, in steering column
T10p10-pin connector, grey, left connector point, A pillar
T10ar10-pin connector, orange, connector point, electronics box, plenum chamber
T1515-pin connector, white, connector point, electronics box, plenum chamber
T17a17-pin connector, brown, left connector point, A pillar
   156 Earth connection, in diesel direct injection wiring harness
   A18 Connection (54), in dash panel wiring harness
   A106 Connection -2- (86s), in dash panel wiring harness
   F25 Connection -1-, in diesel direct injection system wiring harness
*Only models with cruise control system
**As of model year 2001 no longer fitted (phased-in modification)
***Applicable from model year 2001 (phased-in modification)

Wiring Diagram AUDI A4 2001 - Diesel direct injection system control unit - low fuel level sender



E87Control and display unit for air conditioner
G210Low fuel level sender
J17Fuel pump relay
J248Diesel direct injection system control unit
S228Fuse in fuse box
T1010-pin connector, brown, connector point, electronics box, plenum chamber
T10a10-pin connector, brown, left connector point, A pillar
T10ar10-pin connector, orange, connector point, electronics box, plenum chamber
T15m15-pin connector, red, connector point, electronics box, plenum chamber
   A27 Connection (speed signal), in dash panel wiring harness
   A99 Connection -1- (87), in dash panel wiring harness
   A100 Connection -2- (87), in dash panel wiring harness
   A105 Connection -2- (rpm boost), in dash panel wiring harness
   A121 Connection (high bus), in dash panel wiring harness
   A122 Connection (low bus), in dash panel wiring harness
*Only models with air conditioner
**Applicable from model year 2001
***Fit at any vacant relay point
CAN bus (data wires)

Wiring Diagram AUDI A4 2001 - Diesel direct injection system control unit - air mass meter - clutch pedal switch - exhaust gas recirculation valve - charge pressure control solenoid valve



F36Clutch pedal switch
G70Air mass meter
J138Radiator fan run-on control unit
J248Diesel direct injection system control unit
N18Exhaust gas recirculation valve
N75Charge pressure control solenoid valve
N144Electro/hydraulic engine mounting solenoid valve, left
N145Electro/hydraulic engine mounting solenoid valve, right
N211Throttle butterfly valve
T10ar10-pin connector, orange, connector point, electronics box, plenum chamber
T1515-pin connector, white, connector point, electronics box, plenum chamber
T15m15-pin connector, red, connector point, electronics box, plenum chamber
T17a17-pin connector, brown, left connector point, A pillar
   A71 Connection (86), in dash panel wiring harness
   D102 Connection -2-, in engine compartment wiring harness
   D103 Connection -3-, in engine compartment wiring harness
   D106 Connection -4-, in engine compartment wiring harness
*Only models with manual gearbox
**Applicable from model year 2001 (phased-in modification)

Wiring Diagram AUDI A4 2001 - Diesel direct injection system control unit - reversing light switch - engine speed sender



E3Hazard warning light switch
F4Reversing light switch
G28Engine speed sender
J248Diesel direct injection system control unit
M16Reversing light bulb, left
M17Reversing light bulb, right
T3m3-pin connector, grey, in engine compartment, left
T3au3-pin connector, red, connector point, electronics box, plenum chamber
T1010-pin connector, brown, connector point, electronics box, plenum chamber
T10a10-pin connector, brown, left connector point, A pillar
T10ar10-pin connector, orange, connector point, electronics box, plenum chamber
   86 Earth connection -1-, in rear wiring harness
   156 Earth connection, in diesel direct injection wiring harness
   196 Earth connection -3-, in rear wiring harness
   A70 Connection (15a, fuse 231), in dash panel wiring harness
   A87 Connection (RF (reversing light)), in dash panel wiring harness
*Only models with manual gearbox
**Applicable for model year 2000 up to 11/99 (models with manual gearbox only)
***Only models with automatic gearbox

Wiring Diagram AUDI A4 2001 - Diesel direct injection system control unit - accelerator pedal position sender



F8Kick-down switch
F60Idling switch
G79Accelerator pedal position sender
J248Diesel direct injection system control unit
T6as6-pin connector, black, near accelerator pedal position sender
T10m10-pin connector, black, connector point, electronics box, plenum chamber
T1515-pin connector, white, connector point, electronics box, plenum chamber
   A45 Connection (engine speed signal), in dash panel wiring harness
*As of model year 2001 no longer fitted (phased-in modification)
**Applicable from model year 2001 (phased-in modification)

Wiring Diagram AUDI A4 2001 - Dash panel insert - coolant shortage indicator switch - fuel gauge sender - fuel pump - diagnostic connector



F66Coolant shortage indicator switch
GFuel gauge sender
G6Fuel pump
J218Combi-processor in dash panel insert
T6e6-pin connector, blue, left connector point, A pillar
T10a10-pin connector, brown, left connector point, A pillar
T10m10-pin connector, black, connector point, electronics box, plenum chamber
T10ao10-pin connector, white, left connector point, A pillar
T1616-pin connector, diagnostic connector
T3232-pin connector, blue, on dash panel insert
T32a32-pin connector, green, on dash panel insert
   86 Earth connection -1-, in rear wiring harness
   139 Earth connection (sender earth), in diesel direct injection system wiring harness
   199 Earth connection -3-, in dash panel wiring harness
   269 Earth connection (sender earth) -1-, in dash panel wiring harness
   A76 Connection (diagnosis wire K), in dash panel wiring harness
*Applicable up to 1999 model year
**Applicable from model year 2000
***Output for signal earth
****Applicable for model year 2000 up to 11/99 (models with manual gearbox only)

Wiring Diagram AUDI A4 2001 - Dash panel insert - warning lamps - speedometer sender - oil pressure switch - oil level/oil temperature sender



F1Oil pressure switch
G8Oil temperature sender
G22Speedometer sender
G266Oil level/oil temperature sender
J218Combi-processor in dash panel insert
K2Alternator warning lamp
K29Glow period warning lamp
T1010-pin connector, brown, connector point, electronics box, plenum chamber
T10m10-pin connector, black, connector point, electronics box, plenum chamber
T3232-pin connector, blue, on dash panel insert
T32a32-pin connector, green, on dash panel insert
   83 Earth connection -1-, in front right wiring harness
   121 Earth connection -2-, in front right wiring harness
   A17 Connection (61), in dash panel wiring harness
   A74 Connection (15a, fuse 5), in dash panel wiring harness
*Applicable up to 1999 model year
**Applicable from model year 2000
***Applies to extended servicing intervals only
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