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Audi A8 Current Flow Diagram No. 46 / 4
Motronic control unit, ignition coils, injectors
J220 - Motronic control unit
N - Ignition coil
N30 - Injector, cylinder 1
N31 - Injector, cylinder 2
N32 - Injector, cylinder 3
N33 - Injector, cylinder 4
N83 - Injector, cylinder 5
N84 - Injector, cylinder 6
N163 - Ignition coil 4
N189 - Ignition coil 6
P - Spark plug connector
Q - Spark plugs
600
- Earth point, on cylinder head, right
601
- Earth point, on cylinder head, left
E6
- Positive (+) connection -1- (15), in Motronic wiring harness
- Connection (15, ignition right), in Motronic wiring harness
E22
E23
- Connection (15, ignition left), in Motronic wiring harness
ws = white
sw = black
ro = red
E24
- Connection (87a, left inlet valve), in Motronic wiring harness
br = brown
gn = green
bl = blue
E25
- Connection (87a, right inlet valve), in Motronic wiring harness
gr = grey
li = purple
ge = yellow
or = orange
rs = pink
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Audi A8 Current Flow Diagram No. 46 / 5
Motronic control unit, final output stage for ignition coils
J220 - Motronic control unit
N85 - Injector, cylinder 7
N86 - Injector, cylinder 8
N122 - Final output stage
N190 - Ignition coil 7
P - Spark plug connector
Q - Spark plugs
S116 - Injector fuse
T4a - 4-pin connector, black, at output stage
T5 - 5-pin connector, black, at output stage
85
- Earth connection -1-, in engine compartment wiring harness
601
- Earth point, on cylinder head, left
E7
- Connection (87a), in Motronic wiring harness
E23
- Connection (15, ignition left), in Motronic wiring harness
E24
- Connection (87a, left inlet valve), in Motronic wiring harness
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
ge = yellow
or = orange
rs = pink
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Audi A8 Current Flow Diagram No. 46 / 6
Motronic control unit, throttle valve potentiometer, air mass meter
F60 - Idling switch
G42 - Intake air temperature sender
G61 - Knock sensor 1
G62 - Coolant temperature sender
G66 - Knock sensor 2
G69 - Throttle valve potentiometer
G70 - Air mass meter
J220 - Motronic control unit
N71 - Idling stabilization valve
T3i - 3-pin connector, green, at knock sensor 1
T3k - 3-pin connector, brown, at knock sensor 2
85
- Earth connection -1-, in engine compartment wiring harness
139
- Earth connection (sender earth), in Motronic wiring harness
- Positive (+) connection (5 volts), in Motronic wiring harness
E16
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
ge = yellow
or = orange
rs = pink
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Audi A8 Current Flow Diagram No. 46 / 7
Motronic control unit, Hall senders, engine speed sender, ignition
coil fuses
G28 - Engine speed sender
G40 - Hall sender
J220 - Motronic control unit
N80 - Activated charcoal filter system solenoid valve 1 (pulsed)
N128 - Ignition coil 2
N156 - Intake manifold change-over valve
P - Spark plug connector
Q - Spark plugs
S115 - Ignition coil terminal 15 fuse
S117 - Control element fuse
T3m - 3-pin connector, grey, engine speed sender, in engine
compartment
T10a - 10-pin connector, black, connector point, electronics box,
plenum chamber
85
- Earth connection -1-, in engine compartment wiring harness
600
- Earth point, on cylinder head, right
D80
- Positive (+) connection (87a - for activated charcoal filter
system solenoid valve), in engine compartment wiring
harness
ws = white
sw = black E6
- Positive (+) connection -1- (15), in Motronic wiring harness
ro = red
br = brown
gn = green E22
- Connection (15, ignition right), in Motronic wiring harness
bl = blue
gr = grey
li = purple
ge = yellow
or = orange
rs = pink
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Audi A8 Current Flow Diagram No. 46 / 8
Motronic control unit, fuel pump relay, ignition coils
J17 - Fuel pump relay
J220 - Motronic control unit
J221 - Selector lever lock control unit
N158 - Ignition coil 3
N164 - Ignition coil 5
N191 - Ignition coil 8
P - Spark plug connector
Q - Spark plugs
S1 - Fuse in fuse carrier
S3 - Fuse in fuse carrier
T6e - 6-pin connector, brown, connector point, electronics box,
plenum chamber
600
- Earth point, on cylinder head, right
601
- Earth point, on cylinder head, left
- Connection (15, ignition left), in Motronic wiring harness
E23
E100
- Connection (multi-function switch), in dash panel wiring
harness
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
ge = yellow
or = orange
rs = pink
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Audi A8 Current Flow Diagram No. 46 / 9
Motronic control unit, Motronic current supply relay, ignition coils
for output stages, lambda probes with heating
E87 - Control and display unit for air conditioner
G39 - Lambda probe
J220 - Motronic control unit
J271 - Motronic current supply relay
N192 - Final output stage 2
T4b - 4-pin connector, brown, on ignition final output stage
T4m - 4-pin connector, black, lambda probe, right
T5a - 5-pin connector, brown, at output stage
T10 - 10-pin connector, blue, connector point, electronics box,
plenum chamber
T10a - 10-pin connector, black, connector point, electronics box,
plenum chamber
Z19 - Lambda probe heater
85
- Earth connection -1-, in engine compartment wiring harness
D50
- Positive (+) connection (30), in engine compartment wiring
harness
E8
- Connection (screening), in Motronic wiring harness
- Connection (lambda probe signal), in Motronic wiring harness
E27
ws = white
sw = black
ro = red E28
- Connection (lambda probe heating), in Motronic wiring
br = brown harness
gn = green * - Models with air conditioner
bl = blue
gr = grey
li = purple
ge = yellow
or = orange
rs = pink
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Audi A8 Current Flow Diagram No. 46 / 10
Motronic control unit, automatic gearbox control unit, lambda
probe 2, immobilizer
D2 - Immobilizer reading coil
F125 - Multi-function switch
G108 - Lambda probe 2
J217 - Automatic gearbox control unit
J220 - Motronic control unit
J362 - Immobilizer control unit
T4n - 4-pin connector, black, near lambda probe 2
T6e - 6-pin connector, brown, connector point, electronics box,
plenum chamber
Z28 - Lambda probe 2 heater
- Earth connection -1-, in engine compartment wiring harness
85
E8
- Connection (screening), in Motronic wiring harness
E27
- Connection (lambda probe signal), in Motronic wiring harness
E105
- Earth connection, in dash panel wiring harness, left
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
ge = yellow
or = orange
rs = pink
