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Audi A6 Current Flow Diagram No. 19 / 2
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Battery, starter, alternator, starter inhibitor and reversing light
relay
A - Battery
B - Starter
C - Alternator
C1 - Voltage regulator
D - Ignition/starter switch
F4 - Reversing light switch
F125 - Multi-function switch
J217 - Automatic gearbox control unit
J226 - Starter inhibitor and reversing light relay
M16 - Reversing light bulb, left
M17 - Reversing light bulb, right
T2p - 2-pin connector, blue, in engine compartment, right
T6l - 6-pin connector, red, connector point, electronics box,
plenum chamber
T9 - 9-pin connector, brown, at starter inhibitor relay
T10f - 10-pin connector, brown, connector point, A pillar, left
T10o - 10-pin connector, brown, connector point, electronics box,
plenum chamber
T10v - 10-pin connector, brown, connector point, A pillar, right
T10w - 10-pin connector, blue, connector point, A pillar, right
- Earth strap, battery - body
1
135
- Earth connection -2-, in dash panel wiring harness
ws = white
sw = black - Earth connection -3-, in dash panel wiring harness
199
ro = red
rt = red
br = brown A17
- Connection (61), in dash panel wiring harness
gn = green
bl = blue
gr = grey - Positive (+) connection -2- (15a), in dash panel wiring
A38
li = purple harness
vi = purple
ge = yellow - Positive (+) connection (50), in dash panel wiring harness
A41
or = orange
rs = pink
A87
- Connection (RF (reversing light)), in dash panel wiring
harness
* - Models with manual gearbox
** - Models with automatic gearbox
*** - Both possible
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Audi A6 Current Flow Diagram No. 19 / 3
Glow plugs, relay for glow plugs
D - Ignition/starter switch
E87 - Control and display unit for air conditioner
J52 - Glow plug relay
J217 - Automatic gearbox control unit
Q6 - Glow plugs (engine)
S5 - Fuse in fuse box
S39 - Fuse for glow plugs - engine
S231 - Fuse in fuse box
T6l - 6-pin connector, red, connector point, electronics box,
plenum chamber
T10n - 10-pin connector, yellow, connector point, electronics box,
plenum chamber
T10w - 10-pin connector, blue, connector point, A pillar, right
- Positive (+) connection (15), in dash panel wiring harness
A2
A20
- Positive (+) connection (15a), in dash panel wiring harness
- Connection (glow plugs), in front right wiring harness
D16
* - Models with air conditioner
ws = white
sw = black ** - Models with automatic gearbox
ro = red
rt = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
vi = purple
ge = yellow
or = orange
rs = pink
Audi A6 Current Flow Diagram No. 19 / 4
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Diesel direct injection system control unit, diesel direct injection
system relay, fuse, valves
G70 - Air mass meter
J217 - Automatic gearbox control unit
J248 - Diesel direct injection system control unit
J322 - Diesel direct injection system relay
N18 - Exhaust gas recirculation valve
N75 - Charge pressure control solenoid valve
S102 - Engine control unit fuse
T10c - 10-pin connector, grey, connector point, A pillar, left
T10l - 10-pin connector, white, connector point, electronics box,
plenum chamber
T10n - 10-pin connector, yellow, connector point, electronics box,
plenum chamber
T10w - 10-pin connector, blue, connector point, A pillar, right
43
- Earth point, lower part of right A-pillar
- Earth connection -1-, in engine compartment wiring harness
85
- Positive (+) connection (30), in dash panel wiring harness
A32
ws = white
sw = black A99
- Connection -1- (87), in dash panel wiring harness
ro = red
rt = red
br = brown
- Connection (87), in engine compartment wiring harness
D83
gn = green
bl = blue - Connection -1-, in engine compartment wiring harness
gr = grey D101
li = purple
vi = purple * - Models with manual gearbox and cruise control system
ge = yellow
or = orange ** - Models with automatic gearbox and cruise control system
rs = pink
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Audi A6 Current Flow Diagram No. 19 / 5
Diesel direct injection system control unit, accelerator pedal
position sender, brake light switch, clutch pedal switch, injection
pump
F - Brake light switch
F8 - Kick-down switch
F36 - Clutch pedal switch
F60 - Idling switch
G79 - Accelerator pedal position sender
G81 - Fuel temperature sender
G149 - Modulating piston movement sender
J217 - Automatic gearbox control unit
J248 - Diesel direct injection system control unit
M9 - Brake light bulb, left
M10 - Brake light bulb, right
N108 - Commencement of injection valve
N109 - Fuel shut-off valve
N146 - Metering adjuster
T3l - 3-pin connector, black, on injection pump
T6a - 6-pin connector, blue, connector point, A pillar, left
T8b - 8-pin connector, injection pump
T10l - 10-pin connector, white, connector point, electronics box,
plenum chamber
T10m - 10-pin connector, blue, connector point, electronics box,
ws = white plenum chamber
sw = black T10v - 10-pin connector, brown, connector point, A pillar, right
ro = red T10w - 10-pin connector, blue, connector point, A pillar, right
rt = red
br = brown - Earth connection -2-, in dash panel wiring harness
135
gn = green
bl = blue
gr = grey 199
- Earth connection -3-, in dash panel wiring harness
li = purple
vi = purple
ge = yellow - Connection (54), in dash panel wiring harness
A18
or = orange
rs = pink
- Connection -2-, in engine compartment wiring harness
D102
* - Models with manual gearbox
** - Models with automatic gearbox
*** - Both possible
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Audi A6 Current Flow Diagram No. 19 / 6
Diesel direct injection system control unit, additional heater relay,
fuses
D - Ignition/starter switch
E87 - Control and display unit for air conditioner
F38 - Ambient temperature switch
J214 - Thermotronic control unit
J217 - Automatic gearbox control unit
J248 - Diesel direct injection system control unit
J359 - Low heat output relay
J360 - High heat output relay
S13 - Fuse in fuse box
S109 - Additional heater fuse
S143 - Additional heater fuse 2
T10c - 10-pin connector, grey, connector point, A pillar, left
T10n - 10-pin connector, yellow, connector point, electronics box,
plenum chamber
T10o - 10-pin connector, brown, connector point, electronics box,
plenum chamber
T10p - 10-pin connector, black, connector point, electronics box,
plenum chamber
T10v - 10-pin connector, brown, connector point, A pillar, right
Z35 - Additional heating heater element
44
- Earth point, lower part of left A-pillar
156
- Earth connection, in diesel direct injection wiring harness
ws = white
sw = black
ro = red - Connection (engine speed signal), in dash panel wiring
rt = red A45
br = brown harness
gn = green - Positive (+) connection 2 (30), in dash panel wiring harness
bl = blue A52
gr = grey
li = purple - Connection (C15, air conditioner), in dash panel wiring
vi = purple A68
ge = yellow
harness
or = orange - Connection (additional heater), in diesel direct injection
rs = pink F32
system wiring harness
* - Models with automatic gearbox
** - Models with Thermotronic
*** - Models with air conditioner
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**** - Models with 120 A alternator
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Audi A6 Current Flow Diagram No. 19 / 7
Diesel direct injection system control unit, cruise control system
switch, engine speed sender, coolant temperature, intake
manifold pressure, intake manifold temperature and needle lift
E45 - Cruise control system switch
G2 - Coolant temperature sender
G28 - Engine speed sender
G62 - Coolant temperature sender
G71 - Intake manifold pressure sender
G72 - Intake manifold temperature sender
G80 - Needle lift sender
J189 - Auto-check system
J217 - Automatic gearbox control unit
J248 - Diesel direct injection system control unit
T2r - 2-pin connector, brown, in engine compartment, right
T3m - 3-pin connector, black, on engine speed sender
T10c - 10-pin connector, grey, connector point, A pillar, left
T10n - 10-pin connector, yellow, connector point, electronics box,
plenum chamber
T10o - 10-pin connector, brown, connector point, electronics box,
plenum chamber
T10p - 10-pin connector, black, connector point, electronics box,
ws = white plenum chamber
sw = black T10q - 10-pin connector, black, on cruise control system switch
ro = red T10v - 10-pin connector, brown, connector point, A pillar, right
rt = red
br = brown T20 - 20-pin connector, red/white, on dash panel insert
gn = green - Earth connection -1-, in engine compartment wiring harness
85
bl = blue
gr = grey
li = purple 269
- Earth connection (sender earth) -1-, in dash panel wiring
vi = purple harness
ge = yellow
or = orange - Connection (speed signal), in dash panel wiring harness
A108
rs = pink
* - Models with manual gearbox
** - Models with automatic gearbox
*** - Models with cruise control system
# - Models with on-board computer
Audi A6 Current Flow Diagram No. 19 / 8
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Dash panel insert, warning lamps, speedometer sender, fuel
gauge, oil temperature gauge, rev. counter
F1 - Oil pressure switch
F66 - Coolant shortage indicator switch
G - Fuel gauge sender
G1 - Fuel gauge
G5 - Rev. counter
G8 - Oil temperature sender
G9 - Oil temperature gauge
G21 - Speedometer
G22 - Speedometer sender (Hall sender, on gearbox)
J218 - Combi-processor in dash panel insert
K - Diagnosis connection
K2 - Alternator warning lamp
K3 - Oil pressure warning lamp
K28 - Coolant temperature/coolant shortage warning lamp
K29 - Glow period warning lamp
T10f - 10-pin connector, brown, connector point, A pillar, left
T10o - 10-pin connector, brown, connector point, electronics box,
plenum chamber
T10p - 10-pin connector, black, connector point, electronics box,
ws = white plenum chamber
sw = black T16a - 16-pin connector, diagnosis connection
ro = red T32 - 32-pin connector, blue, on dash panel insert
rt = red
br = brown T32a - 32-pin connector, green, on dash panel insert
gn = green
85
- Earth connection -1-, in engine compartment wiring harness
bl = blue
gr = grey
li = purple
135
- Earth connection -2-, in dash panel wiring harness
vi = purple
ge = yellow
or = orange - Earth connection (sender earth) -1-, in dash panel wiring
269
rs = pink harness
A76
- Connection (diagnosis wire K), in dash panel wiring harness
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Audi A6 Current Flow Diagram No. 19 / 9
Engine cooling
F18 - Radiator fan thermo-switch
F54 - Radiator fan thermo-switch
J26 - Radiator fan relay
J138 - Radiator fan run-on relay
J217 - Automatic gearbox control unit
N39 - Radiator fan series resistor
S42 - Radiator fan single fuse
S142 - Radiator fan control unit fuse
T10c - 10-pin connector, grey, connector point, A pillar, left
T10v - 10-pin connector, brown, connector point, A pillar, right
V7 - Radiator fan
- Earth point, lower part of left A-pillar
44
193
- Earth connection -1-, in coolant fan wiring harness
* - Models with automatic gearbox
ws = white
sw = black
ro = red
rt = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
vi = purple
ge = yellow
or = orange
rs = pink
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