2.7l - engine (biturbo), code apb

Edition 08/99

W42.5502.10.21

15 A10 A

25 A20 A

30 A

Fuse Colors :

--

--

-

GreenWhite

BlueRed

Yellow

Fuse in fusebox from 23 onwards are numbered223 onwards in Current Flow Diagram.

1 3 6 10 14 18 22

2 4 7 11 15 19 23

5 9 13 17 21

8 12 16 20

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

A97--0022

Fuse Panel :

Micro Central Electric :

Relay Location :

4 Fuel Pump (FP) Relay-

A97--0110

75X 30 30 30a 87F/Diesel

5 6

Audi A4 Wiring diagram No. 80

2.7l-Injection Engine (Biturbo), 184kW, 6-Cylinder, Code APB

2000 m. y.

Edition 08/99

W42.5502.10.21

3-way Relay Carrier:

6

A97--0025

1 2 3

4 5

8 97

Relay Location :

2 Secondary Air Injection (AIR) Relay-

A97--0024

7 8 9 10 11 12 13

1 2 3 4 5 614

15 16 17 18

13-way Relay Carrier:

Relay Location :

Fuse Location :

7 Fuse for Secondary Air Pump-

13 Park / Neutral Position (PNP) Relay-

No. 80/1 Wiring diagram Audi A4

31X

1530

31X

1530

97--51926

G

25,0sw

1181

0,5br

S1/31

--A

+

M

15a30 50

16,0sw

2,5sw

B

W D+/61

C C1

B+/30

1,5bl

T2ab/1

T2ab/2

1,0bl

2,5ro/sw

122

12,0ro

30

T10/4

16,0sw

1 2 3 4 5 6 7 8

2,5ro/sw

2,5ro/sw

2/50z

J226

8/50a13

S3/50a

A86

1,0ro/sw

1,0ro/sw

a

4/A

T10aa/4

0,35ro/gr

0,35ro/ws

6/B

0,5ro/sw

T10m/1

A17

1,0bl

0,35bl

50bD

V94

li = violetge = yellow

bl = bluegr = grey

br = browngn = green

sw = blackro = red

ws = white

Edition 10/99W42.5502.11.21

Battery, Starter, Generator

Audi A4 Wiring diagram No. 80/2

A - BatteryB - StarterC - Generator (GEN)C1 - Voltage Regulator (VR)D - Ignition/Starter SwitchJ226 - Park / Neutral Position (PNP) RelayT2ab - Wire Connector, double, grey, in engine compartment,

rightT10 - Wire Connector, 10 Point brown, connector station,

electronics box in plenum chamberT10m - Wire Connector, 10 Point, black, connector station,

electronics box in plenum chamberT10aa - Wire Connector, 10 Point, orange, connector station,

left A-pillarV94 - Central Locking / Alarm System / Interior Light Delay

Control Module

11 - Ground connection, in battery box

81 - Ground connection -1-, in instrument panel wiringharness

A17 - Wire connection (61), in instrument panel wiring harness

A86 - Connector (50a), in instrument panel wiring harness

31X

1530

31X

1530

97--51927

9 10 11 12 13 14 15 16 17 18 19 20

65 J220

112 64

D23

2

175N

104

80N

2

1

D22

133N

132N31N

2

1

88 97

22

30N1

96

2

S22920A

229a

S23410A

234a

S22820A228a

118

43

0,5ro/bl

S3/SS3/87a S2/87F S3/1S3/LA

J

16/S

1717/30 19/15

20/87a 23/87F

21/31 22

18/LA 24

87F/DTI

4

229 234 228

T10m/8

0,35gn/sw

T10/1

0,35gn/sw

0,35ro/bl

1,5gn

2,5gn/sw

1,5gn

1,5gn/ge

2,5gn/ge

2,5ro/gn

0,35br/sw

0,35br/bl

0,35br/li

0,35br/gn

0,35li/ws

0,35bl/gn

T10ar/1

T10ar/8

2,5gn/ge

1,0sw/bl

0,5gn/ge

184N

183N

113 89

22

0,35br/gr

0,35ws/ge

40

T15m/2

a

a1

A151

A152

2,5gn/ge

2,5ro/gn

2,5ro/gn

30

T15m/5

0,35sw/li

115

0,35sw/li

A76

0,35gn/ro

114

0,35sw/ge

41

T6aa/5

0,5ro/gn

0,5ro/gn

4441

21

3

1,5sw/bl

1,0sw/bl

1,0sw/bl

1,0sw/bl

1,0sw/bl

1,0sw/bl

109

2,5sw/bl

0,5gn/ge

0,5gn/ge

0,5gn/ge

101


bl = bluegr = grey


sw = blackro = red

ws = white

Edition 10/99

W42.5502.11.21Engine Control Module (ECM)


J17 - Fuel Pump (FP) RelayJ220 - Motronic Engine Control Module (ECM)N30 - Injector, Cyl. 1N31 - Injector, Cyl. 2N32 - Injector, Cyl. 3N33 - Injector, Cyl. 4N75 - Wastegate Bypass Regulator ValveN80 - Evaporative Emission (EVAP) Canister Purge Regulator

ValveN83 - Injector, Cyl. 5N84 - Injector, Cyl. 6T6aa - Wire Connector, 6 Point, brown, connector station right,

A-pillarT10 - Wire Connector, 10 Point brown, connector station,

electronics box in plenum chamber

T10m - Wire Connector, 10 Point, black, connector station,electronics box in plenum chamber

T10ar - Wire Connector, 10 Point, orange, connector station,electronics box in plenum chamber

T15m - Wire Connector, 15 Point, red, connector station,electronics box in plenum chamber

A76 - Connector (K-diagnosis wire), in instrument planel wiringharness

A151 - Connector -4- (87), in instrument planel wiring harness


D22 - Connector (over fuse 234), in wiring harness front, right


31X

1530

31X

1530

97--51928

24 25 26 27 28 29 30 31 32

0,35ro

1,0ro

T10m/4

62

A27

116

0,35ws/bl

54

0,35ws/bl

0,35ws/bl

T10/3

A45

117

0,35gn/bl

T10m/2

37

0,35gn/bl

0,35gn/bl

30

b1

22 23

48

T10ar/2

0,35ro/br

0,35ro/br

124

236G

D23

D101

1,0br/gr

200

205N208N

115 20 50 61 53 27 29

220J

1,0br/gr

2 2

11 3

1

3

122

1

534

20,35sw

70G

a1

5852

0,35bl/ro

0,35li/gn

0,35bl/br

0,35li/gr

0,35sw/gn

0,35gn

0,5li/gn

235G

1,0sw/gn

D8

0,5li/gn

33

47

T10/2

0,35ge/br

0,35ge/br

118

4

112N

2

1

0,35ge/gn

9

8N

2

1

0,35gn/ge

0,5gn/ge

*

*

34

35

*

0,5gn/ge

0,5gn/ge

0,5gn/ge

0,5gn/ge

0,5gn/ge

0,5gn/ge

0,5gn/ge

0,5gn/ge

0,5gn/ge


bl = bluegr = grey


sw = blackro = red

ws = white

Edition 10/99W42.5502.11.21

Engine Control Module (ECM)


G70 - Mass Air Flow (MAF) SensorG235 - Sensor -1- for exhaust temperatureG236 - Sensor -2- for exhaust temperatureJ220 - Motronic Engine Control Module (ECM)N8 - Central Idle, Idle Air Control (IAC) Cut-Off ValveN112 - Secondary Air Injection (AIR) Solenoid ValveN205 - Valve -1- for camshaftadjustmentN208 - Valve -2- for camshaftadjustmentT10 - Wire Connector, 10 Point brown, connector station,

electronics box in plenum chamberT10m - Wire Connector, 10 Point, black, connector station,

electronics box in plenum chamberT10ar - Wire Connector, 10 Point, orange, connector station,


200 - Ground connection (shielding), in engine compartmentwiring harness

A27 - Wire connection (vihicle speed signal), in instrumentpanel wiring harness

A45 - Wire connection (RPM-signal), in instrument panelwiring harness

D8 - Wire connection (temperature sensor/potentiometer), inright front wiring harness


D101 - Wire connection -1-, in engine compartment wiringharness

* - Automatic transmission Only

31X

1530

31X

1530

97--51929

36 38 39 40 41 42 43 44 45

J220

b1200

0,35sw

69

29Z130G

4

3

1

2

T4w/4 T4w/1

sw/ws ws

0,5gn/ge

20

68

T4w/3

gr

11

30Z 131G

4

3

1

2

T4x/1 T4x/4

sw/ws

0,5gn/ge

T4x/2

0,35bl

0,35gr

0,35ws

25

0,35ge/ro

2

0,5ro/gn

9

37 46 4735

80

T10ar/6

0,35ws/ge

3

1

V144

0,5ge/ro

T6aa/1

0,5ws/ge

T6aa/2

0,35ws/ge

b1

ws

10

0,35br

0,35sw

21

gr

T4x/3

T10ar/7

0,35ge/ro

63

0,35ge/ro

6

0,35ge/ws

ws

T4w/2

J6/T

4/86

299

8/87

2/30

2

0,35bl/gr

46

23

0,5gn/ge

V101

M

1

2

4,0br

130S50A

2

7

4,0ro/ge

4,0ro/sw

2,5ro

36

1

12

30

T3aa/3

A40

4,0ro

37

4,0ro

2,5ro * *

*

* **

*

*

S3/150,5ro

ws

A b 00 00


bl = bluegr = grey


sw = blackro = red

ws = white

Engine Control Module (ECM) Edition 10/99

W42.5502.11.21


G130 - Oxygen Sensor (O2S) Behind Three Way CatalyticConverter (TWC)

G131 - Oxygen Sensor (O2S) 2 Behind Three Way CatalyticConverter (TWC)

J220 - Motronic Engine Control Module (ECM)J316 - Secondary Air Injection (AIR) Pump RelayS130 - Fuse for secondary air pumpT3aa - Wire Connector, 3 Point, white, connector station,

electronics box in plenum chamberT4w - Wire Connector, 4 Point, green, in engine compartment,

rightT4x - Wire Connector, 4 Point, brown, in engine compartment,

rightT6aa - Wire Connector, 6 Point, brown, connector station right,

A-pillarT10ar - Wire Connector, 10 Point, orange, connector station,


V101 - Secondary Air Injection (AIR) Pump MotorV144 - Leak detection pump (LDP)Z29 - Heater for Lambda-probe 1Z30 - Heater for Lambda-probe 2

12 - Ground connection, in engine compartment, left


A40 - Wire connection (vihicle speed signal), in instrumentpanel wiring harness

* - Automatic transmission Only

31X

1530

31X

1530

97--51930

50 51 52 53 54 55 56 57 58

J220

b1200

32

0,35br/gn

0,35sw

13

19Z

39G

4

3

2

1

T4y/4 T4y/2

sw/ws ws

0,5gn/ge

25

4

T4y/3

gr

70

28Z

108G

4

3

2

1

T4z/4 T4z/2

sw/ws ws

27

51

T4z/3

gr

0,35gn

0,5ge/bl

0,35gn

0,35ge

19

0,35bl/li

T10ar/10

0,35bl/li

0,35bl/li

119

A79

48 49 59 60

0,35gn/ro

0,35sw/gr

0,35br/ro

84

0,35sw/br

1,0ro/li

118

1,0br/li

T4y/1

12

0,35ge

ws

5

0,5ge/gn

T4z/1

ws

1

83 83

1,5br

1,5br

0,35sw

2

338JM

5

3

117 83 92 91

4 2 1 6

67

E3

0,35li/bl

T3au/2

8/AB

A125

0,5li/bl

0,35li/bl

74

J104

T15m/1

13

0,35gn/br

0,35gn/br

0,35gn/br

T10b/3

0,5gn/ge


bl = bluegr = grey


sw = blackro = red

ws = white

Edition 08/99W42.5502.10.21



E3 - Emergency Flasher SwitchG39 - Heated Oxygen Sensor (HO2S)G108 - Heated Oxygen Sensor (HO2S) 2J104 - ABS Control Module (w/EDL)J220 - Motronic Engine Control Module (ECM)J338 - Throttle Valve Control ModuleT3au - Wire Connector, 3 Point, red, connector station,

electronics box in plenum chamberT4y - Wire Connector, 4 Point, black, in engine compartment,

rightT4z - Wire Connector, 4 Point, black, in engine compartment,

leftT10b - Wire Connector, 10 Point, orange, connector station left,

A-pillarT10ar - Wire Connector, 10 Point, orange, connector station,



Z19 - Oxygen Sensor (O2S) 1 HeaterZ28 - Oxygen Sensor (O2S) 2 Heater

83 - Ground connection -1-, in right front wiring harness


A79 - Connector (engine overhead warning light), in instrumentpanel wiring harness

A125 - Connection (crash signal), in instrument panel wiringharness

31X

1530

31X

1530

97--5193161 62 63 64 65 66 67 68 69 70 71 72

J220

362G

42G

0,5bl/br

0,35gr/ro

1

93

0,35br

2

242G

1

85

T3n/3 T3n/1 T3n/2

107

66G

0,35gn

0,35ge

0,35sw

c1

T3o/3 T3o/1 T3o/2

61G

0,35br

106

0,35sw

0,35ws

220

81

0,35ge

0,35ge

T10/10

0,35br/gr

0,5br/gr

0,35br/gr

108

104

0,35ws

99

T2af/2

T2af/1

0,35gn/ws

0,5gn/ws

0,5br/gr

ET6y/6 450 2 2a1

T15/7 T15/8 T15/9

0,35ro/ge

0,35ro/ge

0,35bl

0,35bl

0,35sw/bl

0,35ro/gr

0,35sw/ws

0,35sw/ws

T6y/1

T15/10

76 75 5738

T6y/4

T6y/3T6y/2T6y/5

0,35sw/ws

0,35ro/gr

108

120

0,35br

199

T10m/5

0,5br

131

117

0,5br

73

113

A b 00 00


bl = bluegr = grey


sw = blackro = red

ws = white

Engine Control Module (ECM) Edition 08/99

W42.5502.10.21


E45 - Cruise Control SwitchG2 - Engine Coolant Temperature (ECT) SensorG42 - Intake Air Temperature (IAT) SensorG61 - Knock Sensor (KS) 1G62 - Engine Coolant Temperature (ECT) SensorG66 - Knock Sensor (KS) 2J189 - Auto Check SystemJ220 - Motronic Engine Control Module (ECM)T2af - Wire Connector, double, black, in engine compart-

ment, rightT3n - Wire Connector, 3 Point, blue, in engine compart-

ment, leftT3o - Wire Connector, 3 Point,blue, in engine compart-

ment, rightT6y - Wire Connector, 6 Point, black, near steering column

T10 - Wire Connector, 10 Point brown, connector station,electronics box in plenum chamber

T10m - Wire Connector, 10 Point, black, connector station,electronics box in plenum chamber

T15 - Wire Connector, 15 Point, white, connector station,electronics box in plenum chamber

104 - Ground connection, in right front wiring harness (sensorgrounds)

131 - Ground connection -2-, in engine compartment wiringharness


220 - Ground connection (sensor ground), in engine compart-ment wiring harness

A121

31X

1530

31X

1530

97--51932

75 76 77 78 79 80 81 82 83 84 85

c1220

T3m/1 T3m/2 T3m/3

28G

0,35gr

0,35bl

J220

8290

0,35sw

0,35gn/li

86

111

0,35gn/br

8674

0,35gn/sw

980,35bl/li

870,35bl/gr

1010,35ro/br

580,35ro/sw

60

0,5br/gr

D141

1

4

33/-- 1/+

2/S G40

3/--1/+

2/S G163

d1

T15m/14

A122

0,35ro/br

0,35ro/sw

T15m/15

0,5gn/sw

0,5gn/sw

0,5br/gr

0,5gn/sw

0,5br/gr

G31

41

E87

0,35sw/gr

0,35sw/gr

T15m/3

C12

A100

0,35sw/gr

T6as/4

T6as/6

T6as/5

T6as/3

T6as/1

T15/4

33

0,35gr/ge

0,35gr/ge

79G5 6 1 3 4 2

T15/6

34

0,35br/gn

0,35br/gn

T15/5

72

0,35gr

0,35gr

T15/3

36

0,35br/ro

0,35br/ro

T15/1

35

0,35ge/bl

0,35ge/bl

T15/2

73

0,35ge/li

0,35ge/li

T6as/2

0,35gr/ge

0,35br/gn

0,35gr

0,35br/ro

0,35ge/bl

0,35ge/li

185G

Low--Bus High--Bus

0,35ro/br

0,35ro/sw

113 114


bl = bluegr = grey


sw = blackro = red

ws = white

Edition 03/01W42.5502.12.21



E87 - A/C Control HeadG28 - Engine Speed (RPM) SensorG31 - Charge Air Pressure SensorG40 - Camshaft Position (CMP) SensorG79 - Throttle Position (TP) SensorG163 - Camshaft Position (CMP) Sensor 2G185 - Sender -2- for accelerator pedal positionJ220 - Motronic Engine Control Module (ECM)T3m - Wire Connector, 3 Point, grey, in engine compartment,

leftT6as - Wire Connector, 6 Point, black, in engine compartment,

rearT15 - Wire Connector, 15 Point, white, connector station,



220 - Ground connection (sensor ground), in engine compart-ment wiring harness


A121 - Connection (high bus), in instrument planel wiringharness

A122 - Connection (low bus), in instrument planel wiringharness

D141 - Connector (5V), in wiring harness, engine pre-wiring

- CAN-Bus

31X

1530

31X

1530

97--51933

87 88 89 90 91 92 93 94 95 96 97 98

1

N15

Q

P

ll

1 4a

15

Q

P

lll

1 4a

15

Q

P

lVN128 N158

1,5ro/gn

95

d1 d1

N122

D14

83

2,5br

39 T4f/2/G

T3w/1/E1 T3w/2/E2

4a

1,5br/ge

1,0br/ge

110T4f/1/I3

0,35gn/gr

0,35gr/br

18

1,5br/gr

1,5br/gn

1,5br/bl

g1

94

0,35gr/ge

102

0,35ws/gn

103

0,35ws/br

e1

f1

220J

0,5sw/bl

A18

56 55

T15/11

F36F

112

1,0ro/ge

0,5sw/bl

12 4

21 3

9M10M

0,35ro/gn

0,35ro/sw

0,35ws/ro

0,35ro/sw

0,35ws/ro

1,0ro/sw

1,0ro/sw

0,35ro/gn

T4f/4/I1

T4f/3/I2

0,35gn/br

T3w/3/E3

T15/12

1,5br/ge

99

T15/13

A106

0,35ws/ro

A104

2,5sw/bl

111

*

*

*

1,5ro/gn

1,5ro/gn


bl = bluegr = grey


sw = blackro = red

ws = white

Engine Control Module (ECM),

Ignition

Edition 03/01

W42.5502.12.21


F - Brake Light SwitchF36 - Clutch Vacuum Vent Valve SwitchJ220 - Motronic Engine Control Module (ECM)M9 - Left Brake LightM10 - Right Brake LightN - Ignition CoilN122 - Power Output StageN128 - Ignition Coil 2N158 - Ignition Coil 3P - Spark Plug ConnectorQ - Spark PlugsT3w - Wire Connector, 3 Point, black, on Power Output StageT4f - Wire Connector, 4 Point, black, on Power Output StageT15 - Wire Connector, 15 Point, white, connector station,


18 - Ground connection, on engine block


A18 - Wire connection (54), in instrument panel wiring harness

A104 - Plus connection -2- (15), in instrument panel wiringharness

A106 - Connector -2- (86s), in instrument panel wiring harness

D14 - Wire connection (ignition coil - control module), in rightfront wiring harness

* - Manual Transmission Only

10ar/5

31X

1530

31X

1530

97--51934

100 101 102 103 104 105 106 107 108

d1

e1

f1

0,35gn/br

0,35ws/br

0,35gr/br

A20

1

15

Q

P

ll

1 4a

15

Q

P

lll

1 4a

15

Q

P

lVN164 N189

1,5ro/gn

N192

83

2,5br

T4g/2/G

T3x/1/E1 T3x/2/E2

4a

1,5br/ge

1,0br/ge

T4g/1/I3

18

1,5br/gr

1,5br/gn

1,5br/bl

g1

T4g/4/I1

T4g/3/I2

T3x/3/E3

N163

D14

1,5br/ge

109

66

0,35sw/bl

1310A

13

S

30

A32

6,0ro

6,0ro

13a

1,0ro/ge

88

S23220A

232

232a

S3/15

A2

2,5sw

0,5sw

2,5sw/bl

123

0,35sw

23115AS231

231a

2,5sw/bl

2,5sw

F4

710A

7

S

7a

91

2,5sw/bl

110 111 112

2,5sw/bl

T

2,5sw/bl

10

1,5ro/gn

1,5ro/gn

2,5ro/gn

16


bl = bluegr = grey


sw = blackro = red

ws = white

Edition 08/99W42.5502.10.21

Ignition, Fuse holder


F4 - Back-Up Light SwtichN163 - Ignition Coil 4N164 - Ignition Coil 5N189 - Ignition Coil 6N192 - Power Output Stage 2P - Spark Plug ConnectorQ - Spark PlugsS7 - Fuse in fuse holderS13 - Fuse in fuse holderS231 - Fuse in fuse holderS232 - Fuse in fuse holderT3x - Wire Connector, 3 Point, brown, on Power Output StageT4g - Wire Connector, 4 Point, brown, on Power Output StageT10ar - Wire Connector, 10 Point, orange, connector station,


18 - Ground connection, on engine block


A2 - Plus connection (15), in instrument panel wiringharness

A20 - Wire connection (15a), in instrument panel wiringharness

A32 - Plus connection (30), in instrument panel wiring harness

D14 - Wire connection (ignition coil - control module), in rightfront wiring harness

31X1530

31X1530

97--51935

113 114 115 116 117 118 119 120 121 123

K2

T32/6

16

0,35sw/li

T32/3

29

0,35ws/bl

T32/12

57

0,35bl/li

T32/8

0,35bl/br

T32/1

109

0,35sw

T32/10

T10m/3

T32/22

0,35bl/ge

0,5br

F66

0,5bl/ge

T10m/7

M

6

GG

86 199

1,5br

0,35br

T32/5

0,35li/sw

T10a/3

12

T6e/30,5li/sw

1,5gn/ge

1,5gn/ge

1

4

2

3

T32/28

0,35br/ro

3/31

2/G 1

G22

83

0,5br/ro

T10m/10

T32a/12

8

0,35bl

62 T10m/9

0,5bl/br

D1

J218

1

3

19

0,35gn/ro

122 124

K132

T32/13

25

0,35ro/br

T32/11

32

0,35gn/bl

T32a/18

86

T2x/1

0,35ws/gr

F1

0,5ws/gr

0,5ws/gr

0,5br

T10ao/6

1,0br

61

T32a/28 T32/16

23

0,35ge/br

85

T32a/19

0,35ro/br

0,35ro/sw

T32/25

71

0,35ge

A b 00 00


bl = bluegr = grey


sw = blackro = red

ws = white

Instrument Cluster Edition 08/99

W42.5502.10.21


F1 - Oil Pressure SwitchF66 - Engine Coolant Level (ECL) Warning SwitchG - Fuel Level SensorG6 - Fuel Pump (FP)G22 - Speedommeter Vehicle Speed Sensor (VSS)J218 - Instrument Cluster Combination ProcessorK2 - Headlight High Beam Indicator LightK132 - Fault light for power accelerator activationT2x - Wire Connector, double, black, in engine compartment,

leftT6e - Wire Connector, 6 Point, blue, connector station left,

A-pillarT10a - Wire Connector, 10 Point, brown, connector station left,

A-pillarT10m - Wire Connector, 10 Point, black, connector station,


T10ao - Wire Connector, 10 Point, white, connector station left,A-pillar

T32 - Wire Connector, 32 Point, blue, on instrument clusterT32a - Wire Connector, 32 Point, green, on instrument cluster


86 - Ground connection -1-, in rear wiring harness


2.7l - engine (biturbo), code apb

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