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Audi A4 1998 Wiring Diagram Guide

This document provides a current flow diagram for an Audi A4 with a 1.8L fuel injected engine. It lists the components in the electrical system including the battery, starter, alternator, fuse box, and micro-central electrics. It then describes the connections and pinouts for the Motronic control unit, fuel pump relay, injectors, air mass meter and other engine components. Earth points and connector locations are indicated on diagrams of the various systems. The document is intended to show the electrical connections between components related to engine and vehicle control systems.

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Martins Jansons
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2K views9 pages

Audi A4 1998 Wiring Diagram Guide

This document provides a current flow diagram for an Audi A4 with a 1.8L fuel injected engine. It lists the components in the electrical system including the battery, starter, alternator, fuse box, and micro-central electrics. It then describes the connections and pinouts for the Motronic control unit, fuel pump relay, injectors, air mass meter and other engine components. Earth points and connector locations are indicated on diagrams of the various systems. The document is intended to show the electrical connections between components related to engine and vehicle control systems.

Uploaded by

Martins Jansons
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 9

WI-XML Page 1 of 9

Audi A4 Current Flow Diagram No.  5 / 1


Edition 04.1998

Audi A4 (1.8 l fuel injection engine, 110 kW, Motronic (5-valve/turbo), 4-cylinder), engine code AEB
From model year 1998, ▸ 8D-X-200000
Audi A4 (1.8 l fuel injection engine, 132 kW, Motronic (5-valve/turbo), 4-cylinder), engine code AJL
From model year 1998, ▸ 8D-X-200000
Fuse box:

From fuse number 23 upwards the fuses in the fuse box are designated as 223 etc. in the Current Flow Diagram.

Micro-central electrics:

Position of relays:
4 - Fuel pump relay
Fuse colours
30 A - green
25 A - white
WI-XML Page 2 of 9

20 A - yellow
15 A - blue
10 A - red
5A - beige
WI-XML Page 3 of 9

Audi A4 Current Flow Diagram No.  5 / 2


Battery, starter, alternator
A - Battery
B - Starter
C - Alternator
C1 - Voltage regulator
D - Ignition/starter switch
T1a - Single connector, blue, in engine compartment
T6z - 6-pin connector, red, connector point, electronics
box, plenum chamber
T10 - 10-pin connector, brown, connector point,
electronics box, plenum chamber
- Earth point, in battery box
11

- Earth connection -1-, in wiring harness


83

- Earth connection -2-, in front right wiring harness


121

- Connection (61), in dash panel wiring harness


A17

- Connection (50a), in dash panel wiring harness


A86

* - Only models with manual gearbox


ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
ge = yellow
or = orange
rs = pink

Audi A4 Current Flow Diagram No.  5 / 3


WI-XML Page 4 of 9

Motronic control unit, fuel pump relay, injectors, air


mass meter
G70 - Air mass meter
J17 - Fuel pump relay
J220 - Motronic control unit
N30 - Injector, cylinder 1
N31 - Injector, cylinder 2
N32 - Injector, cylinder 3
N33 - Injector, cylinder 4
N75 - Charge pressure control solenoid valve
N80 - Activated charcoal filter system solenoid valve 1
T6z - 6-pin connector, red, connector point, electronics
box, plenum chamber
T10z - 10-pin connector, yellow, connector point,
electronics box, plenum chamber
- Earth connection -1-, in front right wiring harness
83

- Connection (87a for injectors), in engine


D22
compartment wiring harness, right
- Connection (87F), in engine compartment wiring
D23
harness, right

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 A4 Current Flow Diagram No.  5 / 4


Motronic control unit, coolant temperature sender,
altitude sender, knock sensors, hall sender
G2 - Coolant temperature sender
G40 - Hall sender
G42 - Intake air temperature sender
G61 - Knock sensor I
G62 - Coolant temperature sender
G66 - Knock sensor II
J60 - Automatic gearbox relay
J220 - Motronic control unit
T3o - 3-pin connector, green, in engine compartment, left
T3n - 3-pin connector, blue, in engine compartment, left
T6z - 6-pin connector, red, connector point, electronics
box, plenum chamber
T10 - 10-pin connector, brown, connector point,
electronics box, plenum chamber
T10m - 10-pin connector, black, connector point,
electronics box, plenum chamber
T10y - 10-pin connector, blue, connector point, electronics
box, plenum chamber
T10z - 10-pin connector, yellow, connector point,
electronics box, plenum chamber
- Earth connection -2-, in front right wiring harness
121
ws = white
sw = black
ro = red - Earth connection (sender earth), in engine
139
br = brown compartment wiring harness, right
gn = green
bl = blue - Earth connection -3-, in dash panel wiring harness
199
gr = grey
li = purple
ge = yellow - Connection (speed signal), in dash panel wiring
A27
or = orange harness
rs = pink
- Connection (engine speed signal), in dash panel
A45
wiring harness
* - Only models with automatic gearbox

Audi A4 Current Flow Diagram No.  5 / 5


WI-XML Page 6 of 9

Motronic control unit, engine speed sender, throttle


valve control unit, altitude sender
F96 - Altitude sender
G28 - Engine speed sender
J220 - Motronic control unit
J338 - Throttle valve control unit
T3m - 3-pin connector, grey, in engine compartment, left
- Earth connection -2-, in front right wiring harness
121

- Earth connection (sender earth), in engine


139
compartment wiring harness, right

ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
ge = yellow
or = orange
rs = pink
WI-XML Page 7 of 9

Audi A4 Current Flow Diagram No.  5 / 6


Motronic control unit, lambda probe
E87 - Control and display unit for air conditioner
G39 - Lambda probe
J189 - Auto-check system
J217 - Automatic gearbox control unit
J220 - Motronic control unit
T4y - 4-pin connector, black, in engine compartment,
right
T10 - 10-pin connector, brown, connector point,
electronics box, plenum
T10v - 10-pin connector, brown, right connector point, A
pillar
T10x - 10-pin connector, blue, right connector point, A
pillar
T10y - 10-pin connector, blue, connector point, electronics
box, plenum chamber
Z19 - Lambda probe heater
* - Only models with automatic gearbox
** - Only models with auto-check system
*** - Only models with air conditioner

ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
ge = yellow
or = orange
rs = pink

Audi A4 Current Flow Diagram No.  5 / 7


WI-XML Page 8 of 9

Ignition system
F4 - Reversing light switch
N - Ignition coil 1
N122 - Final output stage
N128 - Ignition coil 2
N158 - Ignition coil 3
N163 - Ignition coil 4
P - Spark plug connector
Q - Spark plugs
T4f - 4-pin connector, black, on ignition final output stage
T5c - 5-pin connector, black, on ignition final output stage
T6z - 6-pin connector, red, connector point, electronics
box, plenum chamber
T10 - 10-pin connector, brown, connector point,
electronics box, plenum chamber
- Earth point, on engine block
18

- Earth connection -1-, in front right wiring harness


83

- Positive (+) connection (15), in dash panel wiring


A2
harness
- Connection (15a), in dash panel wiring harness
A20
ws = white
sw = black
ro = red
- Connection (15a, fuse 231), in dash panel wiring
A70
br = brown harness
gn = green - Connection (ignition coil - control unit), in front right
bl = blue D14
gr = grey wiring harness
li = purple * - Only models with manual gearbox
ge = yellow
or = orange
rs = pink
WI-XML Page 9 of 9

Audi A4 Current Flow Diagram No.  5 / 8


Dash panel insert, vehicle speed sender, fuel gauge
sender, fuel pump, oil pressure switch, combi-processor
in dash panel insert
F1 - Oil pressure switch
F66 - Coolant shortage indicator switch
G - Fuel gauge sender
G6 - Fuel pump
G22 - Speedometer sender (Hall sender, on gearbox)
J218 - Combi-processor in dash panel insert
K2 - Alternator warning lamp
T6e - 6-pin connector, blue, left connector point, A pillar
T10a - 10-pin connector, brown, left connector point, A
pillar
T10m - 10-pin connector, black, connector point,
electronics box, plenum chamber
T32 - 32-pin connector, blue, on dash panel insert
T32a - 32-pin connector, green, on dash panel insert
- Earth connection -1-, in front right wiring harness
83

- Earth connection -1-, in rear wiring harness


86

- Earth connection -2-, in front right wiring harness


121
ws = white
sw = black - Earth connection -2-, in dash panel wiring harness
ro = red 135
br = brown
gn = green - Positive (+) connection (30), in dash panel wiring
bl = blue A32
harness
gr = grey
li = purple - Positive (+) connection (30as), in dash panel wiring
A50
ge = yellow harness
or = orange
rs = pink

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