VW PASSAT 2005 — 2.3 l/125 kW — Motronic, engine code AZX . Wiring diagrams, Pin Connector, Location

Wiring Diagram VW PASSAT 2005 - Battery - starter - alternator - voltage regulator - turbocharger coolant pump control unit - coolant circulation pump

A	Battery
B	Starter
C	Alternator
C1	Voltage regulator
D	Ignition/starter switch
J59	X-contact relief relay
J155	Turbocharger coolant pump control unit
J207	Starter inhibitor relay
T1c	1-pin connector, black
T2b	2-pin connector, black
T9g	9-pin connector, black
T10b	10-pin connector, black, on protective housing for control units on left in engine compartment
T10d	10-pin connector, brown, on protective housing for control units on left in engine compartment
V51	Continued coolant circulation pump
1	Earth strap, battery body
500	Screw connection 1 (30), on relay plate
502	Screw connection 1 (30a), on relay plate
A17	Connection (61), in dash panel wiring harness
A52	Positive connection 2 (30), in dash panel wiring harness
D97	Connection (50), in engine compartment wiring harness
---	Only models with automatic gearbox

Wiring Diagram VW PASSAT 2005 - Motronic control unit - ignition system - spark plug connectors - spark plugs

J220	Motronic control unit, in protective housing on left in engine compartment
N127	Ignition coil 2 with output stage
N292	Ignition coil 4 with output stage
P	Spark plug connector
Q	Spark plug
S78	Coolant pump fuse
S229	Fuse in fuse holder
T4j	4-pin connector
T4l	4-pin connector
T8s	8-pin connector, black
T10b	10-pin connector, black, on protective housing for control units on left in engine compartment
T10e	10-pin connector, orange, on protective housing for control units on left in engine compartment
T121	121-pin connector, on Motronic control unit
16	Earth point 1, on cylinder head cover
84	Earth connection, engine block, in front right wiring harness
281	Earth connection 1, in engine wiring harness
501	Screw connection 2 (30), on relay plate
504	Screw connection 1 (87), on relay plate
D23	Connections (via fuse 229), in front right wiring harness

Wiring Diagram VW PASSAT 2005 - Motronic control unit - ignition system - spark plug connectors - spark plugs - fuel pump relay

D	Ignition/starter switch
J17	Fuel pump relay
J220	Motronic control unit, in protective housing on left in engine compartment
J393	Convenience system central control unit
N70	Ignition coil 1 with output stage
N291	Ignition coil 3 with output stage
N323	Ignition coil 5 with output stage
P	Spark plug connector
Q	Spark plug
T4i	4-pin connector
T4k	4-pin connector
T4n	4-pin connector
T8s	8-pin connector, black
T10b	10-pin connector, black, on protective housing for control units on left in engine compartment
T121	121-pin connector, on Motronic control unit
30	Earth connection 1, next to relay plate
81	Earth connection 1, in dash panel wiring harness
84	Earth connection, engine block, in front right wiring harness
281	Earth connection 1, in engine wiring harness
A86	Connection (50a), in dash panel wiring harness
D23	Connections (via fuse 229), in front right wiring harness

Wiring Diagram VW PASSAT 2005 - Motronic control unit - brake servo relay - vacuum pump for brakes

D	Ignition/starter switch
J220	Motronic control unit, in protective housing on left in engine compartment
J569	Brake servo relay
S131	Fuse 1
S232	Fuse in fuse holder
T3s	3-pin connector, red, on protective housing for control units on left in engine compartment
T15s	15-pin connector, red, on protective housing for control units on left in engine compartment
T121	121-pin connector, on Motronic control unit
V192	Vacuum pump for brakes
28	Earth point, on bulkhead
85	Earth connection 1, in engine compartment wiring harness
A2	Positive connection (15), in dash panel wiring harness
A20	Connection (15a), in dash panel wiring harness
---	Only models with automatic gearbox
*	Not with all levels of equipment

Wiring Diagram VW PASSAT 2005 - Motronic control unit - injectors

J220	Motronic control unit, in protective housing on left in engine compartment
N30	Injector, cylinder 1
N31	Injector, cylinder 2
N32	Injector, cylinder 3
N33	Injector, cylinder 4
N83	Injector, cylinder 5
T10e	10-pin connector, orange, on protective housing for control units on left in engine compartment
T10f	10-pin connector
T121	121-pin connector, on Motronic control unit
A20	Connection (15a), in dash panel wiring harness
D52	Positive connection (15a), in engine compartment wiring harness
---	Only models with cruise control system (CCS)

Wiring Diagram VW PASSAT 2005 - Motronic control unit - brake light switch - brake pedal switch for CCS - clutch pedal switch - camshaft control valve

F	Brake light switch
F36	Clutch pedal switch
F47	Cruise control system brake pedal switch/diesel direct injection system
J220	Motronic control unit, in protective housing on left in engine compartment
N79	Heater element for crankcase breather
N205	Inlet camshaft control valve 1
N208	Inlet camshaft control valve 2
S7	Fuse in relay plate fuse holder
S13	Fuse in relay plate fuse holder
T15a	15-pin connector, white, on protective housing for control units on left in engine compartment
T121	121-pin connector, on Motronic control unit
A89	Connection 2 (54), in dash panel wiring harness
A104	Positive connection 2 (15), in dash panel wiring harness
A154	Connection (brake pedal), in dash panel wiring harness
D52	Positive connection (15a), in engine compartment wiring harness
*	Only models with manual gearbox
**	Not with all levels of equipment

Wiring Diagram VW PASSAT 2005 - Motronic control unit - cruise control system switch and button

E45	Cruise control system switch, position 0 = OFF in detent, position 1 = OFF with button, position 2 = ON, position 3 = RES
E227	Cruise control system (CCS) SET button
J220	Motronic control unit, in protective housing on left in engine compartment
T10	10-pin connector, black, on right next to steering column
T15a	15-pin connector, white, on protective housing for control units on left in engine compartment
T121	121-pin connector, on Motronic control unit
A130	Connection (CCS), in dash panel wiring harness
---	Only models with cruise control system (CCS)

Wiring Diagram VW PASSAT 2005 - Motronic control unit - Hall sender - coolant temperature sender - brake servo pressure sensor

G2	Coolant temperature sender
G40	Hall sender
G62	Coolant temperature sender
G163	Hall sender 2
G294	Brake servo pressure sensor
J220	Motronic control unit, in protective housing on left in engine compartment
T4v	4-pin connector, black, on brake servo pressure sensor
T10b	10-pin connector, black, on protective housing for control units on left in engine compartment
T121	121-pin connector, on Motronic control unit
220	Earth connection (sender earth), in engine wiring harness
D106	Connection 4, in engine compartment wiring harness
---	Only models with automatic gearbox

Wiring Diagram VW PASSAT 2005 - Motronic control unit - engine speed sender - knock sensors

G28	Engine speed sender
G61	Knock sensor 1
G66	Knock sensor 2
J220	Motronic control unit, in protective housing on left in engine compartment
T3a	3-pin connector, black, on left on bulkhead
T3b	3-pin connector, grey, on left on bulkhead
T3c	3-pin connector, brown, on left on bulkhead
T121	121-pin connector, on Motronic control unit
220	Earth connection (sender earth), in engine wiring harness
D102	Connection 2, in engine compartment wiring harness

Wiring Diagram VW PASSAT 2005 - Motronic control unit - throttle valve module

E15	Heated rear window switch
G186	Throttle valve drive (electric power control)
G187	Throttle valve drive angle sender 1 (electric power control)
G188	Throttle valve drive angle sender 2 (electric power control)
J220	Motronic control unit, in protective housing on left in engine compartment
J255	Climatronic control unit
J314	Air conditioning system cut-off control unit
J338	Throttle valve module
T6a	6-pin connector, black, on throttle valve control module
T6h	6-pin connector, black, on heated rear window switch
T15s	15-pin connector, red, on protective housing for control units on left in engine compartment
T121	121-pin connector, on Motronic control unit
A64	Connection (30, speed boost), in dash panel wiring harness
*	Only models with air conditioning system

Wiring Diagram VW PASSAT 2005 - Motronic control unit - secondary air system - activated charcoal filter system solenoid valve 1 - variable intake manifold changeover valve

J220	Motronic control unit, in protective housing on left in engine compartment
J299	Secondary air pump relay (373), in protective housing for control units on left in engine compartment
N80	Activated charcoal filter system solenoid valve 1 (pulsed)
N112	Secondary air inlet valve
N156	Variable intake manifold changeover valve
S130	Secondary air pump fuse, in protective housing for control units on left in engine compartment
S234	Fuse in fuse holder
T3a	3-pin connector, green, on left on bulkhead
T10e	10-pin connector, orange, on protective housing for control units on left in engine compartment
T10b	10-pin connector, black, on protective housing for control units on left in engine compartment
T121	121-pin connector, on Motronic control unit
V101	Secondary air pump motor
28	Earth point, on bulkhead
E30	Connection (87a), in engine wiring harness

Wiring Diagram VW PASSAT 2005 - Motronic control unit - Lambda probes

G39	Lambda probe
G130	Lambda probe after catalytic converter
J220	Motronic control unit, in protective housing on left in engine compartment
T4c	4-pin connector, brown
T6	6-pin connector, black
T121	121-pin connector, on Motronic control unit
E30	Connection (87a), in engine wiring harness

Wiring Diagram VW PASSAT 2005 - Motronic control unit - air mass meter - accelerator position sender

G70	Air mass meter
G79	Accelerator position sender
G185	Accelerator position sender 2
J220	Motronic control unit, in protective housing on left in engine compartment
T6b	6-pin connector, on accelerator position sender
T10d	10-pin connector, brown, on protective housing for control units on left in engine compartment
T15a	15-pin connector, white, on protective housing for control units on left in engine compartment
T15s	15-pin connector, red, on protective housing for control units on left in engine compartment
T121	121-pin connector, on Motronic control unit
A60	Connection (speed signal), in dash panel wiring harness
A121	Connection (high bus), in dash panel wiring harness
A122	Connection (low bus), in dash panel wiring harness
E30	Connection (87a), in engine wiring harness

Wiring Diagram VW PASSAT 2005 - Oil pressure switch - fuel system pressurisation pump - fuel gauge sender - speedometer sender - coolant shortage indicator sender - fuel gauge senders 2 and 3

F1	Oil pressure switch
G	Fuel gauge sender
G6	Fuel system pressurisation pump
G22	Speedometer sender (inductive sender on gearbox)
G32	Coolant shortage indicator sender
G169	Fuel gauge sender 2
G237	Fuel gauge sender 3
S228	Fuse in fuse holder
T3d	3-pin connector, front left in engine compartment
T4e	4-pin connector, black
T6c	6-pin connector, blue, left A-pillar coupling station
T10a	10-pin connector, brown, left A-pillar coupling station
T10b	10-pin connector, black, on protective housing for control units on left in engine compartment
78	Earth point, lower part of right B-pillar
197	Earth connection 4, in rear wiring harness
269	Earth connection (sender earth) 1, in dash panel wiring harness
316	Earth connection (sender earth 2) in engine wiring harness

Wiring Diagram VW PASSAT 2005 - Dash panel insert - oil level and oil temperature warning/indicator - anti-theft alarm system contact switch

F120	Anti-theft alarm and vermin repellent system contact switch
G266	Oil level and oil temperature sender
J285	Display control unit in dash panel insert
J393	Convenience system central control unit, in front left footwell
K31	Cruise control system warning lamp
K38	Oil level warning lamp
S5	Fuse in relay plate fuse holder
T10a	10-pin connector, brown, left A-pillar coupling station
T10d	10-pin connector, brown, on protective housing for control units on left in engine compartment
T15k	15-pin connector, grey
T32a	32-pin connector, blue, on dash panel insert
T32b	32-pin connector, green, on dash panel insert
44	Earth point, lower part of left A-pillar
86	Earth connection 1, in rear wiring harness
A74	Connection (15a, fuse 5), in dash panel wiring harness
A91	Connection (signal for dash panel insert), in dash panel wiring harness

Wiring Diagram VW PASSAT 2005 - Dash panel insert - optical and acoustic oil pressure warning - odometer display - coolant shortage and coolant temperature indicator - fuel gauge - data bus diagnostic interface

G1	Fuel gauge
G3	Coolant temperature gauge
H11	Oil pressure warning buzzer
J285	Display control unit in dash panel insert
J533	Data bus diagnostic interface
L75	Digital display illumination bulb
K2	Alternator warning lamp
K3	Oil pressure warning lamp
K28	Coolant temperature/coolant shortage warning lamp
K83	Exhaust emissions warning lamp
K132	Electronic power control fault lamp
T32a	32-pin connector, blue, on dash panel insert
T32b	32-pin connector, green, on dash panel insert
Y4	Odometer display
A60	Connection (speed signal), in dash panel wiring harness
A121	Connection (high bus), in dash panel wiring harness
A122	Connection (low bus), in dash panel wiring harness