VW GOLF 1999 — 1.8 l/110 kW — Motronic, engine code AQA . Wiring diagrams, Pin Connector, Location

Wiring Diagram VW GOLF 1999 - Alternator - starter

A	Battery
B	Starter
C	Alternator
C1	Voltage regulator
D	Ignition/starter switch
J59	X-contact relief relay
S10	Fuse 10 in fuse holder
S163	Fuse 2 (30), on battery fuse holder
S176	Fuse 4 (30), on battery fuse holder
S177	Fuse 2 (30), on battery fuse holder
S229	Fuse 29 in fuse holder
T4	4-pin connector, near starter
T6	6-pin connector, brown, in protective housing for connectors on left in plenum chamber
42	Earth point, next to steering column
81	Earth connection 1, in dash panel wiring harness
500	Screw connection 1 (30), on relay plate
501	Screw connection 2 (30), on relay plate
502	Screw connection (30a), on relay plate
A2	Positive connection (15), in dash panel wiring harness
A32	Positive connection (30), in dash panel wiring harness
A41	Positive connection (50), in dash panel wiring harness
A98	Positive connection 4 (30), in dash panel wiring harness

Wiring Diagram VW GOLF 1999 - Motronic control unit - ignition system

J220	Motronic control unit, centre in plenum chamber
N70	Ignition coil 1 with output stage
N127	Ignition coil 2 with output stage
N291	Ignition coil 3 with output stage
N292	Ignition coil 4 with output stage
P	Spark plug connector
Q	Spark plug
T4a	4-pin connector
T4b	4-pin connector
T4c	4-pin connector
T4d	4-pin connector
T6	6-pin connector, brown, in protective housing for connectors on left in plenum chamber
T10a	10-pin connector, in cable channel on left in engine compartment
T121	121-pin connector
15	Earth point, on cylinder head
85	Earth connection 1, in engine compartment wiring harness
281	Earth connection 1, in engine wiring harness
A104	Positive connection 2 (15), in dash panel wiring harness
D52	Positive connection (15a), in engine compartment wiring harness

Wiring Diagram VW GOLF 1999 - Motronic control unit - coolant temperature sender - Hall sender - charge air pressure sender

G2	Coolant temperature sender
G31	Charge air pressure sender
G62	Coolant temperature sender
G163	Hall sender
J220	Motronic control unit, centre in plenum chamber
T10a	10-pin connector, in cable channel on left in engine compartment
T10d	10-pin connector, green, in protective housing for connectors on left in plenum chamber
T121	121-pin connector
220	Earth connection (sender earth), in engine wiring harness
D101	Connection 1, in engine wiring harness

Wiring Diagram VW GOLF 1999 - Motronic control unit - throttle valve module - intake air temperature sender - throttle valve module angle sender (electric throttle control) - knock sensor 1

G42	Intake air temperature sender
G61	Knock sensor 1
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, centre in plenum chamber
J338	Throttle valve module
T3a	3-pin connector, in rear of engine compartment
T6a	6-pin connector
T10	10-pin connector, orange, in protective housing for connectors on left in plenum chamber
T121	121-pin connector
139	Earth connection (sender earth), in Motronic wiring harness
*	Fuel consumption display signal from engine control unit, only MFI

Wiring Diagram VW GOLF 1999 - Motronic control unit - engine speed sender - knock sensor 2 - power assisted steering pressure switch - crankcase breather heater element

F88	Power assisted steering pressure switch
G28	Engine speed sender
G66	Knock sensor 2
J220	Motronic control unit, centre in plenum chamber
N79	Crankcase breather heater element
T3b	3-pin connector, front in engine compartment
T3f	3-pin connector, front in engine compartment
T10	10-pin connector, orange, in protective housing for connectors on left in plenum chamber
T121	121-pin connector
131	Earth connection 2, in engine compartment wiring harness
139	Earth connection (sender earth), in Motronic wiring harness
220	Earth connection (sender earth), in engine wiring harness
608	Earth point, centre in plenum chamber
*	Compressor switch-off
**	Air conditioner "ready" connection
-●-	Only models with crankcase breather heater element

Wiring Diagram VW GOLF 1999 - Motronic control unit - injectors - air mass meter

G70	Air mass meter
J220	Motronic control unit, centre in plenum chamber
N30	Injector, cylinder 1
N31	Injector, cylinder 2
N32	Injector, cylinder 3
N33	Injector, cylinder 4
S232	Fuse 32 in fuse holder
T10	10-pin connector, orange, in protective housing for connectors on left in plenum chamber
T10a	10-pin connector, in cable channel on left in engine compartment
T16	16-pin connector, centre in dash panel, self-diagnosis connection
T121	121-pin connector
A101	Connection 3 (87), in dash panel wiring harness
D95	Connection (injectors), in engine compartment wiring harness
E30	Connection (87a), in engine wiring harness

Wiring Diagram VW GOLF 1999 - Motronic control unit - activated charcoal filter system solenoid valve - accelerator position sender - Lambda probe

G39	Lambda probe
G79	Accelerator position sender
G185	Accelerator position sender 2
J220	Motronic control unit, centre in plenum chamber
N80	Activated charcoal filter system solenoid valve 1
T4b	4-pin connector, in protective housing in rear of engine compartment
T6b	6-pin connector
T10h	10-pin connector, blue, in protective housing for connectors on left in plenum chamber
T121	121-pin connector
E30	Connection (87a), in engine wiring harness

Wiring Diagram VW GOLF 1999 - Motronic control unit - continued coolant circulation pump

J104	ABS/ABS with EDL control unit, on left in engine compartment
J220	Motronic control unit, centre in plenum chamber
J234	Airbag control unit, behind lower part of console
J293	Radiator fan control unit, in front left of engine compartment
T2b	2-pin connector, in cable channel on left in engine compartment
T10b	10-pin connector
T10d	10-pin connector, green, in protective housing for connectors on left in plenum chamber
T25	25-pin connector, on ABS/ABS with EDL control unit
T47	47-pin connector, on ABS control unit with EDL/TCS/ESP
T50	50-pin connector
T121	121-pin connector
V51	Continued coolant circulation pump
85	Earth connection 1, in engine compartment wiring harness
A121	Connection (high bus), in dash panel wiring harness
A122	Connection (low bus), in dash panel wiring harness
A125	Connection (crash signal), in dash panel wiring harness

Wiring Diagram VW GOLF 1999 - Motronic control unit - charge pressure control solenoid valve - turbocharger air recirculation valve - fuel pump relay

J17	Fuel pump relay
J220	Motronic control unit, centre in plenum chamber
J234	Airbag control unit, behind lower part of console
N75	Charge pressure control solenoid valve
N249	Turbocharger air recirculation valve
T10	10-pin connector, orange, in protective housing for connectors on left in plenum chamber
T10a	10-pin connector, in cable channel on left in engine compartment
T10d	10-pin connector, green, in protective housing for connectors on left in plenum chamber
T10h	10-pin connector, blue, in protective housing for connectors on left in plenum chamber
T50	50-pin connector
T121	121-pin connector
A125	Connection (crash signal), in dash panel wiring harness
D102	Connection 2, in engine wiring harness

Wiring Diagram VW GOLF 1999 - Motronic control unit - cruise control system (CCS) switch - clutch pedal switch - brake light switch - brake pedal switch for CCS

E45	Cruise control system switch**
E227	Cruise control system (CCS) SET button**
F	Brake light switch
F36	Clutch pedal switch
F47	Cruise control system brake pedal switch
J220	Motronic control unit, centre in plenum chamber
S13	Fuse 13 in fuse holder
T10	10-pin connector, orange, in protective housing for connectors on left in plenum chamber
T10d	10-pin connector, green, in protective housing for connectors on left in plenum chamber
T10e	10-pin connector, black, in protective housing for connectors on left in plenum chamber
T10s	10-pin connector, next to steering column
T121	121-pin connector
A18	Connection (54), in dash panel wiring harness
A20	Connection (15a), in dash panel wiring harness
A27	Connection (speed signal), in dash panel wiring harness
**	Only models with CCS

Wiring Diagram VW GOLF 1999 - Fuel pump - fuel gauge sender - coolant shortage indicator sender

G	Fuel gauge sender
G6	Fuel pump
G32	Coolant shortage indicator sender
S228	Fuse 28 in fuse holder
S234	Fuse 34 in fuse holder
S243	Fuse 43 in fuse holder
T6	6-pin connector, brown, in protective housing for connectors on left in plenum chamber
T10a	10-pin connector, in cable channel on left in engine compartment
135	Earth connection 2, in dash panel wiring harness
269	Earth connection (sender earth) 1, in dash panel wiring harness
504	Screw connection (87F), on relay plate
A99	Connection 1 (87), in dash panel wiring harness
A100	Connection 2 (87), in dash panel wiring harness
-●-	Only models with crankcase breather heater element

Wiring Diagram VW GOLF 1999 - Dash panel insert - optical and acoustic oil pressure warning - speedometer sender - coolant temperature/coolant shortage warning lamp - electric power control fault lamp

F1	Oil pressure switch
G22	Speedometer sender (Hall sender on gearbox)
H3	Warning buzzer
J285	Control unit with display in dash panel insert
K2	Alternator warning lamp
K3	Oil pressure warning lamp
K28	Coolant temperature/coolant shortage warning lamp
K132	Electronic power control fault lamp
S5	Fuse 5 in fuse holder
S7	Fuse 7 in fuse holder
T10a	10-pin connector, in cable channel on left in engine compartment
T32	32-pin connector, blue
T32a	32-pin connector, green
85	Earth connection 1, in engine compartment wiring harness
608	Earth point, centre in plenum chamber
B163	Positive connection 1 (15), in interior wiring harness
*	Fuel consumption display signal from engine control unit, only MFI

Wiring Diagram VW GOLF 1999 - Dash panel insert - coolant temperature gauge - fuel gauge - multifunction display - ambient temperature indicator - speedometer - self-diagnosis connection

E86	Multifunction display call-up button
E109	Multifunction display memory switch
G1	Fuel gauge
G3	Coolant temperature gauge
G17	Ambient temperature sensor
G21	Speedometer
J119	Multifunction display
J285	Control unit with display in dash panel insert
K105	Reserve fuel warning lamp
T6e	6-pin connector
T16	16-pin connector, centre in dash panel, self-diagnosis connection
T32	32-pin connector, blue
T32a	32-pin connector, green
A13	Connection (door contact switch), in dash panel wiring harness
A27	Connection (speed signal), in dash panel wiring harness
A76	Connection (K-diagnosis wire), in dash panel wiring harness
*	Revolution signal from engine control unit