AUDI A3 2001 — Audi A3 (1.6 l litre fuel injection engine, 74 kW, Simos, 4-cylinder) engine codes APF . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI A3 2001 - Simos control unit - fuel pump relay - injectors - Hall sender - intake manifold change-over valve - coolant temperature senders

A	Battery
B	Starter
C	Alternator
C1	Voltage regulator
D	Ignition/starter switch
S131	Fuse 1 in fuse box/battery
S132	Fuse 2 in fuse box/battery
S133	Fuse 3 in fuse box/battery
S134	Fuse 4 in fuse box/battery
S138	Fuse 5 in fuse box/battery
S162	1 in fuse box/battery
S163	2 in fuse box/battery
S164	3 in fuse box/battery
T2f	2-pin connector, wiring duct, in engine compartment, left
T3e	3-pin connector, black, on main fuse box/battery
T6m	6-pin connector, brown, in plenum chamber
2	Earth strap, gearbox - body
10	Earth point, in plenum chamber
12	Earth point, in engine compartment, left
85	Earth connection -1-, in engine compartment wiring harness
D97	Connection (50), in engine compartment wiring harness, right

Wiring Diagram AUDI A3 2001 - Simos control unit - knock sensor - engine speed sender

D	Ignition/starter switch
F88	Power assisted steering pressure switch
G2	Coolant temperature sender
G40	Hall sender
G62	Coolant temperature sender
J17	Fuel pump relay
J361	Simos control unit
N30	Injector, cylinder 1
N31	Injector, cylinder 2
N32	Injector, cylinder 3
N33	Injector, cylinder 4
N79	Heater element (crankcase breather)
N156	Intake manifold change-over valve
T6m	6-pin connector, brown, in plenum chamber
T10	10-pin connector, white, in plenum chamber
T14	14-pin connector, wiring duct, in engine compartment, left
85	Earth connection -1-, in engine compartment wiring harness
269	Earth connection (sender earth) -1-, in dash panel wiring harness
A100	Connection -2- (87), in dash panel wiring harness
A125	Connection (crash signal), in dash panel wiring harness
B155	Connection -2- (DC), in interior wiring harness
D140	Connection (injectors), in engine prewiring wiring harness
*	Export versions, only northern countries

Wiring Diagram AUDI A3 2001 - Simos control unit - throttle valve control unit - valve and potentiometer for exhaust gas recirculation

F265	Map-controlled engine cooling thermostat
G28	Engine speed sender
G61	Knock sensor 1
J361	Simos control unit
J271	Current supply relay
T2m	2-pin connector, wiring duct, in engine compartment, left
T3b	3-pin connector, black, in engine compartment
T3d	3-pin connector, grey, in engine compartment
T6m	6-pin connector, brown, in plenum chamber
T10x	10-pin connector, orange, in plenum chamber
T14	14-pin connector, wiring duct, in engine compartment, left
85	Earth connection -1-, in engine compartment wiring harness
A45	Connection (engine speed signal), in dash panel wiring harness
A108	Connection (speed signal), in dash panel wiring harness
D52	Positive (+) connection (15a) , in engine compartment wiring harness
G9	Connection, in Simos wiring harness
*	Relay in plenum chamber

Wiring Diagram AUDI A3 2001 - Simos control unit - accelerator pedal position senders - cruise control system switch - brake light switch - clutch pedal switch

G186	Throttle valve drive
G187	Throttle valve drive angle sender -1-
G188	Throttle valve drive angle sender -2-
G212	Exhaust gas recirculation potentiometer
J361	Simos control unit
J338	Throttle valve control unit
N18	Exhaust gas recirculation valve
T10	10-pin connector, white, in plenum chamber
85	Earth connection -1-, in engine compartment wiring harness

Wiring Diagram AUDI A3 2001 - Simos control unit - lambda probes with additional heater - air mass meter - activated charcoal filter system solenoid valve

E45	Cruise control system switch
F	Brake light switch
F36	Clutch pedal switch
G79	Accelerator pedal position sender
G185	Accelerator pedal position sender -2-
J361	Simos control unit
T4c	4-pin connector, behind console
T7	7-pin connector, behind steering column switch trim
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
*	Only models with cruise control system
**	Only models with manual gearbox

Wiring Diagram AUDI A3 2001 - Simos control unit - ignition system - secondary air pump

E87	Control and display unit for air conditioner
G39	Lambda probe
G70	Air mass meter
G130	Lambda probe downstream of catalytic converter
J217	Automatic gearbox control unit
J293	Radiator fan control unit
J361	Simos control unit
N80	Activated charcoal filter system solenoid valve 1
N112	Secondary air inlet valve
T4m	4-pin connector, in engine compartment, right
T6m	6-pin connector, brown, in plenum chamber
T6o	6-pin connector, in engine compartment, right
T10x	10-pin connector, orange, in plenum chamber
Z19	Lambda probe heater
Z29	Lambda probe 1 heater, downstream of catalytic converter
D80	Positive (+) connection (87a), in engine compartment wiring harness
*	Only models with air conditioner
**	Only models with automatic gearbox

Wiring Diagram AUDI A3 2001 - Simos control unit - fuse box - radiator fan

J104	ABS with EDL control unit
J316	Secondary air system relay
J361	Simos control unit
N	Ignition coil 1
N122	Final output stage
N128	Ignition coil 2
P	Spark plug connector
Q	Spark plugs
T10	10-pin connector, white, in plenum chamber
T14	14-pin connector, wiring duct, in engine compartment, left
V101	Secondary air pump motor
10	Earth point, in plenum chamber
281	Earth connection -1-, in engine prewiring wiring harness
A15	Positive (+) connection (15), in dash panel wiring harness
A121	Connection (high bus), in dash panel wiring harness
A122	Connection (low bus), in dash panel wiring harness
E14	Connection -1-, in Simos wiring harness
*	Only models with automatic gearbox
**	Relay in plenum chamber
	CAN bus (data wire)

Wiring Diagram AUDI A3 2001 - Simos control unit - fuse box - radiator fan

E159	Fresh air/air recirculating flap switch
F269	Switch for temperature selection rotary knob
G83	Coolant temperature sender, radiator outlet
G267	Temperature selection rotary knob potentiometer
J293	Radiator fan control unit
J361	Simos control unit
N147	Two-way valve for coolant cut-off valve
T8d	8-pin connector, black, behind console
T10a	10-pin connector, green, in plenum chamber
V7	Radiator fan
11	Earth point, in battery box
85	Earth connection -1-, in engine compartment wiring harness
A98	Positive (+) connection -4- (30a), in dash panel wiring harness
B156	Positive (+) connection -4- (30a), in interior wiring harness
L48	Connection (15a), in heater (Thermotronic) controls wiring harness
*	Does not apply to models with air conditioner

Wiring Diagram AUDI A3 2001 - Dash panel insert - combi-processor in dash panel insert - fuel pump - fuel gauge sender - road speed sender - fuse box

G	Fuel gauge sender
G6	Fuel pump
G22	Speedometer sender, (Hall sender, on gearbox)
J218	Combi-processor in dash panel insert
K132	Electronic power control fault lamp
K149	Engine electronics warning lamp
T14	14-pin connector, wiring duct, in engine compartment, left
T32	32-pin connector, blue, on dash panel insert
T32a	32-pin connector, green, on dash panel insert
277	Earth connection -3-, in interior wiring harness
278	Earth connection -4-, in interior wiring harness
281	Earth connection -1-, in engine prewiring wiring harness
A2	Positive (+) connection (15), 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
B178	Connection (speed signal), in interior wiring harness