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AUDI A4 1999 – Audi A4 (2.8 l fuel injection engine, 142 kW, Motronic (5 valve), 6-cylinders), engine codes ALG . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI A4 1999 - Earth connections



Wiring Diagram  AUDI A4 1999 - Earth connections https://portal-diagnostov.com/license.html
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   3 Earth strap, engine support right, to longitudinal member right, front
   12 Earth point, in engine compartment, left
   32 Earth point, behind dash panel, left
   43 Earth point, lower part of right A-pillar
   81 Earth connection -1-, in dash panel wiring harness
   83 Earth connection -1-, in front right wiring harness
   86 Earth connection -1-, in rear wiring harness
   87 Earth connection -2-, in rear wiring harness
   135 Earth connection -2-, in dash panel wiring harness
   176 Earth connection, in right headlight wiring harness
   196 Earth connection -3-, in rear wiring harness

Wiring Diagram AUDI A4 1999 - Battery - starter - alternator



Wiring Diagram  AUDI A4 1999 - Battery - starter - alternator https://portal-diagnostov.com/license.html
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ABattery
BStarter
CAlternator
C1Voltage regulator
T2ab2-pin connector, grey, in engine compartment, right
T6z6-pin connector, red, connector point, electronics box, plenum chamber
   11 Earth point, in battery box
   44 Earth point, lower part of left A pillar
   81 Earth connection -1-, in dash panel wiring harness
   179 Earth connection, in left headlight wiring harness

Wiring Diagram AUDI A4 1999 - Motronic control unit - fuel pump relay - injectors



Wiring Diagram  AUDI A4 1999 - Motronic control unit - fuel pump relay - injectors https://portal-diagnostov.com/license.html
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J17Fuel pump relay
J220Motronic control unit
N30Injector, cylinder 1
N31Injector, cylinder 2
N32Injector, cylinder 3
N33Injector, cylinder 4
N80Activated charcoal filter system solenoid valve 1
N83Injector, cylinder 5
N84Injector, cylinder 6
N112Secondary air inlet valve
N156Intake manifold change-over valve
N205Inlet camshaft timing adjustment valve -1-
N208Inlet camshaft timing adjustment valve -2-
T6z6-pin connector, red, connector point, electronics box, plenum chamber
T10z10-pin connector, yellow, connector point, electronics box, plenum chamber
   A86 Connection (50a), in dash panel wiring harness
   D22 Connection (via fuse 234), in front right wiring harness
   D23 Connection (via fuse 229), in front right wiring harness
*Only engine codes ALG

Wiring Diagram AUDI A4 1999 - Motronic control unit - coolant temperature sender - knock sensors



Wiring Diagram  AUDI A4 1999 - Motronic control unit - coolant temperature sender - knock sensors https://portal-diagnostov.com/license.html
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E87Control and display unit for air conditioner
G2Coolant temperature sender
G18Temperature sensor
G61Knock sensor I
G62Coolant temperature sender
G66Knock sensor II
J217Automatic gearbox control unit
J220Motronic control unit
T3n3-pin connector, blue, in engine compartment, left
T3o3-pin connector, blue, in engine compartment, left
T1010-pin connector, brown, connector point, electronics box, plenum chamber
T10m10-pin connector, black, connector point, electronics box, plenum chamber
T10v10-pin connector, brown, right connector point, A pillar
T10z10-pin connector, yellow, connector point, electronics box, plenum chamber
   83 Earth connection -1-, in front right wiring harness
   199 Earth connection -3-, in dash panel wiring harness
   220 Earth connection (sender earth), in engine wiring harness
   A27 Connection (speed signal), in dash panel wiring harness
   A45 Connection (engine speed signal), in dash panel wiring harness
*Only models with automatic gearbox (only with 2.8 l Motronic)
**Only models with air conditioner

Wiring Diagram AUDI A4 1999 - Motronic control unit - engine speed sender - throttle valve control unit - secondary air pump



Wiring Diagram  AUDI A4 1999 - Motronic control unit - engine speed sender - throttle valve control unit - secondary air pump https://portal-diagnostov.com/license.html
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G28Engine speed sender
J220Motronic control unit
J316Secondary air system relay
J338Throttle valve control unit
S130Secondary air pump fuse
T3m3-pin connector, grey, in engine compartment, left
T1010-pin connector, brown, connector point, electronics box, plenum chamber
T10z10-pin connector, yellow, connector point, electronics box, plenum chamber
V101Secondary air pump motor
   83 Earth connection -1-, in front right wiring harness
   220 Earth connection (sender earth), in engine wiring harness
   A40 Positive (+) connection -1- (30), in dash panel wiring harness
   A70 Positive (+) connection (15a, fuse 231), in dash panel wiring harness
*Only engine codes ALG
**See applicable Current Flow Diagram: ABS
***Only models with front-wheel drive

Wiring Diagram AUDI A4 1999 - Motronic control unit - hall sender - diagnostic connector



Wiring Diagram  AUDI A4 1999 - Motronic control unit - hall sender - diagnostic connector https://portal-diagnostov.com/license.html
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E87Control and display unit for air conditioner
G40Hall sender 1
G163Hall sender 2
J60Automatic gearbox relay
J217Automatic gearbox control unit
J220Motronic control unit
J234Airbag control unit
J446Parking aid control unit
T6ah6-pin connector, green, right connector point, A pillar
T10v10-pin connector, brown, right connector point, A pillar
T10x10-pin connector, blue, right connector point, A pillar
T10y10-pin connector, blue, connector point, electronics box, plenum chamber
T10aa10-pin connector, orange, right connector point, A pillar
T10ab10-pin connector, white, right connector point, A pillar
T1616-pin connector, in centre console rear
V94Central locking motor with control unit for interior lights switch-off delay and anti-theft alarm system
   A76 Connection (diagnosis wire K), in dash panel wiring harness
*Only models with automatic gearbox (only with 2.4 l Motronic)
**Only models with parking aid
***Only models with air conditioner
****Only models with automatic gearbox

Wiring Diagram AUDI A4 1999 - Motronic control unit - lambda probes with heating - air mass meter



Wiring Diagram  AUDI A4 1999 - Motronic control unit - lambda probes with heating - air mass meter https://portal-diagnostov.com/license.html
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G39Lambda probe I
G70Air mass meter
G108Lambda probe II
J189Auto-check system
J220Motronic control unit
T4y4-pin connector, black, in engine compartment, right
T4z4-pin connector, black, in engine compartment, left
T1010-pin connector, brown, connector point, electronics box, plenum chamber
T10y10-pin connector, blue, connector point, electronics box, plenum chamber
T10z10-pin connector, yellow, connector point, electronics box, plenum chamber
T1616-pin connector, (diagnosis connection), in centre console rear
Z19Lambda probe heater I
Z28Lambda probe II heater
   81 Earth connection -1-, in dash panel wiring harness
   83 Earth connection -1-, in front right wiring harness
   200 Earth connection (screening), in engine compartment wiring harness
*Only models with automatic gearbox
**Only models with auto-check system

Wiring Diagram AUDI A4 1999 - Motronic control unit - ignition system



Wiring Diagram  AUDI A4 1999 - Motronic control unit - ignition system https://portal-diagnostov.com/license.html
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J217Automatic gearbox control unit
J220Motronic control unit
NIgnition coil 1
N122Final output stage 1
N128Ignition coil 2
N158Ignition coil 3
PSpark plug connector
QSpark plugs
T5d5-pin connector, near ignition coil
T6z6-pin connector, red, connector point, electronics box, plenum chamber
T10x10-pin connector, blue, right connector point, A pillar
T1510-pin connector, white, connector point, electronics box, plenum chamber
   83 Earth connection -1-, in front right 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
   D14 Connection (ignition coil - control unit), in front right wiring harness
*Only models with automatic gearbox (only with 2.8 l Motronic)
Data wire (CAN bus)

Wiring Diagram AUDI A4 1999 - Ignition/starter switch - X contact relief relay



Wiring Diagram  AUDI A4 1999 - Ignition/starter switch - X contact relief relay https://portal-diagnostov.com/license.html
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DIgnition/starter switch
J59X contact relief relay
J234Airbag control unit
T6ah6-pin connector, green, right connector point, A pillar
T1010-pin connector, brown, connector point, electronics box, plenum chamber
T15a15-pin connector, black, right connector point, A pillar
V94Central locking motor with control unit for interior lights switch-off delay and anti-theft alarm system
   A2 Positive (+) connection (15), in dash panel wiring harness
   A17 Positive (+) connection (61), in dash panel wiring harness
   A21 Positive (+) connection (86s), in dash panel wiring harness

Wiring Diagram AUDI A4 1999 - Tail light - brake light - reversing light



Wiring Diagram  AUDI A4 1999 - Tail light - brake light - reversing light https://portal-diagnostov.com/license.html
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FBrake light switch
F4Reversing light switch
L46Rear fog light bulb, left
L47Rear fog light bulb, right
M2Tail light bulb, right
M4Tail light bulb, left
M6Turn signal bulb, rear left
M8Turn signal bulb, rear right
M9Brake light bulb, left
M10Brake light bulb, right
M16Reversing light bulb, left
M17Reversing light bulb, right
M25High level brake light bulb
T6e6-pin connector, blue, left connector point, A pillar
T1010-pin connector, brown, connector point, electronics box, plenum chamber
T10a10-pin connector, brown, left connector point, A pillar
T10m10-pin connector, black, connector point, electronics box, plenum chamber
   86 Earth connection -1-, in rear wiring harness
   196 Earth connection -3-, in rear wiring harness
   A18 Connection (54), in dash panel wiring harness
   A87 Connection (reversing light), in dash panel wiring harness
*Only models with manual gearbox

Wiring Diagram AUDI A4 1999 - Lighting switch



Wiring Diagram  AUDI A4 1999 - Lighting switch https://portal-diagnostov.com/license.html
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E1Lighting switch
E4Headlight dipper/flasher switch
E19Parking light switch
   A9 Positive (+) connection (56b), in dash panel wiring harness
   A32 Positive (+) connection (30), in dash panel wiring harness
   A43 Connection (57l), in dash panel wiring harness
   A44 Connection (57r), in dash panel wiring harness
   A51 Connection (56), in dash panel wiring harness
*Only models with fog light
**Does not apply to fog light

Wiring Diagram AUDI A4 1999 - Fuse box - number plate light - glove box light - heated washer jets



Wiring Diagram  AUDI A4 1999 - Fuse box - number plate light - glove box light - heated washer jets https://portal-diagnostov.com/license.html
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E168Mirror with folding function, adjustment switch
T2f2-pin connector, on bonnet
T2g2-pin connector, on bonnet
T10a10-pin connector, brown, left connector point, A pillar
T10c10-pin connector, violet, left connector point, A pillar
T15a15-pin connector, black, right connector point, A pillar
V94Central locking motor with control unit for interior lights switch-off delay and anti-theft alarm system
W6Glove box light
XNumber plate light
Z20Heater element, left washer jet
Z21Heater element, right washer jet
   81 Earth connection -1-, in dash panel wiring harness
   87 Earth connection -2-, in rear wiring harness
   A3 Positive (+) connection (58), in dash panel wiring harness
   A34 Connection (75x), in dash panel wiring harness
   A37 Connection (58a), in dash panel wiring harness
   A74 Positive (+) connection (15a, fuse 5), in dash panel wiring harness
   Q53 Positive (+) connection (15), in anti-theft alarm system wiring harness
   W2 Positive (+) connection (58), in rear wiring harness
*Only models with heated washer jets
**Only models with side light warning lamp for Italian export version

Wiring Diagram AUDI A4 1999 - Fuse box - horn



Wiring Diagram  AUDI A4 1999 - Fuse box - horn https://portal-diagnostov.com/license.html
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HHorn plate
H2High tone horn
H7Low tone horn
J4Dual tone horn relay
T5g5-pin connector, behind steering column switch trim
T6a6-pin connector, red, right connector point, A pillar
T6e6-pin connector, blue, left connector point, A pillar
T1616-pin connector, (diagnosis connection) in centre console rear
V94Central locking motor with control unit for interior lights switch-off delay and anti-theft alarm system
   135 Earth connection -2-, in dash panel wiring harness
   176 Earth connection, in right headlight wiring harness
   A1 Positive (+) connection (30a), in dash panel wiring harness
   A50 Positive (+) connection (30as), in dash panel wiring harness
   A72 Connection (71), in dash panel wiring harness
   A90 Connection (dual tone horn), in dash panel wiring harness

Wiring Diagram AUDI A4 1999 - Fuse box - headlights - headlight range control



Wiring Diagram  AUDI A4 1999 - Fuse box - headlights - headlight range control https://portal-diagnostov.com/license.html
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E102Headlight range control adjuster
L1Twin filament bulb for headlight, left
L2Twin filament bulb for headlight, right
M1Side light bulb, left
M3Side light bulb, right
T55-pin connector, headlight, right
T5a5-pin connector, headlight, left
T66-pin connector, yellow, right connector point, A pillar
T6a6-pin connector, red, right connector point, A pillar
T10ad10-pin connector, red, left connector point, A pillar
T10ae10-pin connector, light pink, left connector point, A pillar
V48Headlight range control motor, left
V49Headlight range control motor, right
   135 Earth connection -2-, in dash panel wiring harness
   176 Earth connection, in right headlight wiring harness
   179 Earth connection, in left headlight wiring harness

Wiring Diagram AUDI A4 1999 - Fuse box - cigarette lighter - rear fog light switch



Wiring Diagram  AUDI A4 1999 - Fuse box - cigarette lighter - rear fog light switch https://portal-diagnostov.com/license.html
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E18Rear fog light switch
L28Cigarette lighter light bulb
T6e6-pin connector, blue, left connector point, A pillar
T10i10-pin connector, black, in centre console
U1Cigarette lighter
   81 Earth connection -1-, in dash panel wiring harness
   A19 Connection (58d), in dash panel wiring harness
   A47 Connection (55), in dash panel wiring harness
   A57 Connection (30a), in dash panel wiring harness
*Without radio, terminal 86s
***Without radio, terminal 58d
***Without radio, terminal 30a
****Diagnosis wire for radio

Wiring Diagram AUDI A4 1999 - Dash panel insert - combi-processor in dash panel insert - handbrake warning switch



Wiring Diagram  AUDI A4 1999 - Dash panel insert - combi-processor in dash panel insert - handbrake warning switch https://portal-diagnostov.com/license.html
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F9Handbrake warning switch
J218Combi-processor in dash panel insert
K1Main beam warning lamp
K2Alternator warning lamp
K4Side light warning lamp
K14Handbrake warning lamp
K18Trailer operation warning lamp
K29Glow period warning lamp
K65Left turn signal warning lamp
K86Traction control system warning lamp
K94Right turn signal warning lamp
K132Electronic power control fault lamp
T10af10-pin connector, red, on radio
T3232-pin connector, blue, on dash panel insert
T32a32-pin connector, green, on dash panel insert
   81 Earth connection -1-, in dash panel wiring harness
   135 Earth connection -2-, in dash panel wiring harness
   A4 Positive (+) connection (58b), in dash panel wiring harness
   A24 Connection (brake system monitoring), in dash panel wiring harness
*Only models with trailer coupling
**Only models with side light warning lamp for Italian export version
***Only models with radio

Wiring Diagram AUDI A4 1999 - Dash panel insert - combi-processor in dash panel insert - coolant monitoring - analogue clock - fuel gauge - rev. counter - speedometer - switches and instruments - lighting control - vehicle speed sender - fuel pump - oil pressure switch



Wiring Diagram  AUDI A4 1999 - Dash panel insert - combi-processor in dash panel insert - coolant monitoring - analogue clock - fuel gauge - rev. counter - speedometer - switches and instruments - lighting control - vehicle speed sender - fuel pump - oil pressure switch https://portal-diagnostov.com/license.html
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E20Switches and instruments, lighting control
F1Oil pressure switch
F66Coolant shortage indicator switch
GFuel gauge sender
G1Fuel gauge
G3Coolant temperature gauge
G5Rev. counter
G6Fuel pump (pre-supply pump)
G9Oil temperature gauge
G14Voltmeter
G21Speedometer
G22Speedometer sender (Hall sender, on gearbox)
H3Buzzer/gong
J218Combi-processor in dash panel insert
T10a10-pin connector, brown, left connector point, A pillar
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
YAnalogue clock
   32 Earth point, behind dash panel, left
   83 Earth connection -1-, in front right wiring harness
   86 Earth connection -1-, in rear wiring harness
   199 Earth connection -3-, in dash panel wiring harness

Wiring Diagram AUDI A4 1999 - Dash panel insert - combi-processor in dash panel insert - oil temperature sender



Wiring Diagram  AUDI A4 1999 - Dash panel insert - combi-processor in dash panel insert - oil temperature sender https://portal-diagnostov.com/license.html
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D2Immobilizer reading coil
E87Control and display unit for air conditioner
G8Oil temperature sender
J104ABS with EDL control unit
J218Combi-processor in dash panel insert
J234Airbag control unit
K3Oil pressure warning lamp
K16Reserve fuel warning lamp
K19Seat belt warning system warning lamp
K28Coolant temperature/coolant shortage warning lamp
K32Brake pad/lining warning lamp
K37Windscreen washer fluid level warning lamp
K47ABS warning lamp
K75Airbag warning lamp
K117Immobilizer warning lamp
K118Brake system warning lamp
T10b10-pin connector, orange, left connector point, A pillar
T10m10-pin connector, black, connector point, electronics box, plenum chamber
T15a15-pin connector, black, left connector point, A pillar
T3232-pin connector, blue, on dash panel insert
T32a32-pin connector, green, on dash panel insert
V94Central locking motor with control unit for interior lights switch-off delay and anti-theft alarm system
   A26 Connection (door contact switch/driver's side), in dash panel wiring harness
   R2 Connection (door contact switch, left), in electric window/central locking and door contact switch wiring harness
*Only models with air conditioner
**Only models with additional instruments

Wiring Diagram AUDI A4 1999 - Turn signals and hazard warning lights



Wiring Diagram  AUDI A4 1999 - Turn signals and hazard warning lights https://portal-diagnostov.com/license.html
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E2Turn signal switch
E3Hazard warning light switch
J2Hazard warning light relay
K64Hazard warning light system warning lamp
M5Turn signal bulb, front left
M7Turn signal bulb, front right
M18Side turn signal bulb, left
M19Side turn signal bulb, right
T3q3-pin connector, black, at steering column switch
T66-pin connector, yellow, right connector point, A pillar
T10ae10-pin connector, light pink, left connector point, A pillar
   81 Earth connection -1-, in dash panel wiring harness
   176 Earth connection, in right headlight wiring harness
   179 Earth connection, in left headlight wiring harness
   A5 Positive (+) connection (right turn signal), in dash panel wiring harness
   A6 Positive (+) connection (turn signal, left), in dash panel wiring harness
*Only models with trailer coupling

Wiring Diagram AUDI A4 1999 - Windscreen washer/wiper system



Wiring Diagram  AUDI A4 1999 - Windscreen washer/wiper system https://portal-diagnostov.com/license.html
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E22Intermittent wiper switch
E38Intermittent wiper control
F34Brake fluid level warning contact
J31Automatic intermittent wash/wipe relay
T6al6-pin connector, black, at steering column switch
T10c10-pin connector, violet, left connector point, A pillar
T10ad10-pin connector, red, left connector point, A pillar
T10ae10-pin connector, light pink, left connector point, A pillar
VWindscreen wiper motor
V5Windscreen washer pump
   81 Earth connection -1-, in dash panel wiring harness
   135 Earth connection -2-, in dash panel wiring harness
   A60 Connection (vehicle speed signal), in dash panel wiring harness
   A97 Connection (53), in dash panel wiring harness
*Only models with heated washer jets

Wiring Diagram AUDI A4 1999 - Fresh air blower - heated rear window



Wiring Diagram  AUDI A4 1999 - Fresh air blower - heated rear window https://portal-diagnostov.com/license.html
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E9Fresh air blower switch
E15Heated rear window switch
E159Fresh air/air recirculating flap switch
N24Series resistor for fresh air blower with overheating resistor
T6e6-pin connector, blue, left connector point, A pillar
V2Fresh air blower
V154Fresh/recirculating air flap control motor
Z1Heated rear window
   81 Earth connection -1-, in dash panel wiring harness
   135 Earth connection -2-, in dash panel wiring harness