AUDI A3 2002 — 1.8 l Fuel injection engine (165 kW — Motronic — 4 cylinder), engine code BAM . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI A3 2002 - Starter - battery - alternator - fuses

A	Battery
B	Starter
C	Alternator
C1	Voltage regulator
D	Ignition/starter switch
S131	Fuse 1 in the fuse holder/battery
S132	Fuse 2 in the fuse holder/battery
S133	Fuse 3 in the fuse holder/battery
S134	Fuse 4 in the fuse holder/battery
S138	Fuse 5 in the fuse holder/battery
S162	Fuse 1 (30) in fuse holder on battery
S163	Fuse 2 (30) in fuse holder on battery
S164	Fuse 3 (30) in fuse holder on battery
T2f	2-pin connector, alternator, in left engine compartment
T3e	3-pin connector, black, on main fuse box
T4b	4-pin connector, in left engine compartment
T6m	6-pin connector, brown, in plenum chamber
2	Earth strap, gearbox - body
10	Earth point, in plenum chamber
12	Earth point, on left in engine compartment
85	Earth connection 1, in engine compartment wiring harness
*	with air conditioning system
**	without air conditioning system

Wiring Diagram AUDI A3 2002 - Motronic control unit - fuel pump relay - injectors - solenoid valve

D	Ignition/starter switch
J17	Fuel pump relay
J220	Motronic control unit
J234	Airbag control unit
N30	Injector, cylinder 1
N31	Injector, cylinder 2
N32	Injector, cylinder 3
N33	Injector, cylinder 4
N75	Charge pressure control solenoid valve
N205	Inlet camshaft control valve 1
N249	Turbocharger air recirculation valve
T6m	6-pin connector, brown, in plenum chamber
T10	10-pin connector, white, in plenum chamber
T14	14-pin connector, in left engine compartment
A100	Connection 2 (87), in dash panel wiring harness
A125	Connection (crash signal), in dash panel wiring harness
B155	Connection 2 (DCt), in interior wiring harness
D140	Connection (injectors), in engine wiring harness
E7	Positive connection (87a), in Motronic wiring harness

Wiring Diagram AUDI A3 2002 - Motronic control unit - knock sensor - engine speed sender - coolant temperature sender

G2	Coolant temperature sender
G28	Engine speed sender
G61	Knock sensor 1
G62	Coolant temperature sender
G66	Knock sensor 2
J220	Motronic control unit
T2ap	2-pin connector, knock sensor I, in engine compartment
T2aq	2-pin connector, knock sensor II, in engine compartment
T3d	3-pin connector, white, speed sender, in engine compartment
T10x	10-pin connector, orange, in plenum chamber
T14	14-pin connector, in left engine compartment
220	Earth connection (sender earth), in engine wiring harness
269	Earth connection (sender earth) 1, in dash panel wiring harness
A45	Connection (RPM signal), in dash panel wiring harness
A108	Connection (speed signal), in dash panel wiring harness
D101	Connection 1, in engine compartment wiring harness

Wiring Diagram AUDI A3 2002 - Motronic control unit - throttle valve module - intake air temperature sender

G42	Intake air temperature sender
G186	Throttle valve drive (electric power control)
G187	Throttle valve drive angle sender 1 for electric throttle
G188	Throttle valve drive angle sender 2 for electric throttle
J220	Motronic control unit
J338	Throttle valve module
T10	10-pin connector, white, in plenum chamber
220	Earth connection (sender earth), in engine wiring harness
●	CAN bus (data wire)

Wiring Diagram AUDI A3 2002 - Motronic control unit - accelerator position sender - brake light switch - clutch pedal switch - cruise control system switch

E45	Cruise control system switch
F	Brake light switch
F36	Clutch pedal switch
G79	Accelerator position sender
G185	Accelerator position sender 2
J220	Motronic control unit
T10	10-pin connector, white, in plenum chamber
T10e	10-pin connector, black, in plenum chamber
T10g	10-pin connector, blue, in plenum chamber
B135	Connection 1 (15a), in interior wiring harness
B185	Connection 2 (54), in interior wiring harness
*	for cruise control system only

Wiring Diagram AUDI A3 2002 - Motronic control unit - charge air pressure sender - exhaust temperature sender 1 - Hall sender - air mass meter

F88	Power assisted steering pressure switch
G31	Charge air pressure sender
G40	Hall sender
G70	Air mass meter
G235	Exhaust gas temperature sender 1
J220	Motronic control unit
18	Earth point, on engine block
283	Earth connection 2, in engine harness
D80	Positive connection (87a, for active charcoal filter system solenoid valve), in engine compartment wiring harness
D141	Connection (5V), in engine wiring harness
E17	Connection 2, in Motronic wiring harness

Wiring Diagram AUDI A3 2002 - Motronic control unit - lambda probes - active charcoal filter system solenoid valve 1

E87	operating and display unit for air conditioning system/Climatronic
G39	Lambda probe
G130	Lambda probe after catalytic converter
J220	Motronic control unit
N80	Activated charcoal filter system solenoid valve 1 (pulsed)
T4m	4-pin connector, lambda probe, in right engine compartment
T6m	6-pin connector, brown, in plenum chamber
T6o	6-pin connector, lambda probe, in right engine compartment
T10x	10-pin connector, orange, in plenum chamber
Z19	Lambda probe heater
Z29	Lambda probe 1 heater after catalytic converter
D80	Positive connection (87a, for active charcoal filter system solenoid valve), in engine compartment wiring harness
*	only with air conditioning system / Climatronic

Wiring Diagram AUDI A3 2002 - Motronic control unit - ignition coils

J220	Motronic control unit
N	Ignition coil
N128	Ignition coil 2
N158	Ignition coil 3
N163	Ignition coil 4
P	Spark plug connector
Q	Spark plugs
T10	10-pin connector, white, in plenum chamber
T14	14-pin connector, in left engine compartment
10	Earth point, in plenum chamber
281	Earth connection 1, in engine harness
283	Earth connection 2, in engine harness
D106	Connection 4, in engine compartment wiring harness

Wiring Diagram AUDI A3 2002 - Motronic control unit - Motronic current supply relay - fuses

J220	Motronic control unit
J271	Motronic current supply relay
S13	Fuse in relay plate fuse holder
S237	Fuse in fuse holder
T2m	2-pin connector, engine prewiring, cable channel, in left engine compartment
T6m	6-pin connector, brown, in plenum chamber
85	Earth connection 1, in engine compartment wiring harness
A98	Positive connection 4 (30), in dash panel wiring harness
B156	Positive connection (30a), in interior wiring harness
D78	Positive connection 1 (30a), in engine compartment wiring harness

Wiring Diagram AUDI A3 2002 - Fuel pump - fuses

D	Ignition/starter switch
G	Fuel gauge sender
G6	Fuel pump (pre-supply pump)
S5	Fuse in relay plate fuse holder
S7	Fuse in relay plate fuse holder
S11	Fuse in relay plate fuse holder
S228	Fuse in fuse holder
S229	Fuse in fuse holder
S232	Fuse in fuse holder
S234	Fuse in fuse holder
S243	Fuse in fuse holder
T14	14-pin connector, in left engine compartment
269	Earth connection (sender earth) 1, in dash panel wiring harness
277	Earth connection 3, in interior wiring harness
A2	Positive connection (15), in dash panel wiring harness
A15	Positive connection (15), in instrument panel wiring harness
A23	Connection (30al), in dash panel wiring harness
A99	Connection 1 (87), in dash panel wiring harness
A101	Connection 3 (87), in dash panel wiring harness
B147	Positive connection 2 (87), in interior wiring harness
B149	Positive connection 2 (15a), in interior wiring harness

Wiring Diagram AUDI A3 2002 - Radiator fan thermal switch - coolant pump control unit

F18	Thermal switch for radiator fan
F54	Thermal switch for radiator fan
J155	Coolant pump control unit
V7	Radiator fan
V51	Continued coolant circulation pump
11	Earth point, in battery box
188	Earth connection 3, in air conditioning system wiring harness
A68	Connection (30, air conditioning system), in dash panel wiring harness

Wiring Diagram AUDI A3 2002 - Dash panel insert - oil pressure switch - oil level and oil temperature sender - speedometer sender

F1	Oil pressure switch
G22	Speedometer sender (Hall sender, on gearbox)
G266	Oil level and oil temperature sender
J218	Combi-processor in dash panel insert
J533	Data bus diagnostic interface
K2	Alternator warning lamp
K132	Electric power control fault lamp
K149	Engine electronics warning lamp
T14	14-pin connector, in left engine compartment
T16	16-pin connector, black, shelf centre console (diagnostic connector)
T32	32-pin connector, blue, on dash panel insert
T32a	32-pin connector, green, on dash panel insert
269	Earth connection (sender earth) 1, in dash panel wiring harness
281	Earth connection 1, in engine harness
A76	Connection (diagnosis wire K), in dash panel wiring harness
A80	Connection 1 (X), in dash panel wiring harness
B178	Connection (speed signal), in interior wiring harness