VW PASSAT 1999 – 1.9 l/66 kW – Turbodiesel engine, engine code AHU, with manual gearbox . Wiring diagrams, Pin Connector, Location

Wiring Diagram VW PASSAT 1999 - Battery - starter - alternator - engine glow plugs

A	Battery
B	Starter
C	Alternator
C1	Voltage regulator
D	Ignition/starter switch
Q6	Glow plugs - engine
S125	Engine glow plug fuse, in protective housing for control units on left in engine compartment
T2b	2-pin connector, blue, on right on engine block
T6n	6-pin connector, red, 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
1	Earth strap, battery body
2	Earth strap, gearbox - body
500	Screw connection 1 (30), on relay plate
504	Screw connection 1 (87F), on relay plate
A17	Connection (61), in dash panel wiring harness
A52	Positive connection (30), in dash panel wiring harness
F31	Connection (engine glow plugs), in diesel direct injection system wiring harness

Wiring Diagram VW PASSAT 1999 - Diesel direct injection system control unit - kickdown switch - idling speed switch - accelerator position sender

F8	Kickdown switch
F60	Idling speed switch
G79	Accelerator position sender
J52	Glow plug relay
J248	Diesel direct injection system control unit, in protective housing for control units
J317	Terminal 30 voltage supply relay, in protective housing for control units
S102	Engine control unit fuse, in protective housing for control units
T6a	6-pin connector, on accelerator position sender
T6n	6-pin connector, red, on protective housing for control units on left in engine compartment
T10e	10-pin connector, yellow, on protective housing for control units on left in engine compartment
T10g	10-pin connector, white, on protective housing for control units on left in engine compartment
T80	80-pin connector, on diesel direct injection system control unit
81	Earth connection 1, in dash panel wiring harness
135	Earth connection 2, in dash panel wiring harness
A2	Positive connection (15), in dash panel wiring harness
A52	Positive connection (30), in dash panel wiring harness
F28	Connection 3, in diesel direct injection system wiring harness
F33	Positive connection (30), in diesel direct injection system wiring harness

Wiring Diagram VW PASSAT 1999 - Diesel direct injection system control unit - engine speed sender - intake manifold pressure sender - needle lift sender - intake manifold temperature sender

G28	Engine speed sender
G71	Intake manifold pressure sender
G72	Intake manifold temperature sender
G80	Needle lift sender
J248	Diesel direct injection system control unit, in protective housing for control units
T2	2-pin connector, brown, near needle lift sender
T3	3-pin connector, black, near engine speed sender
T10b	10-pin connector, black, on protective housing for control units on left in engine compartment
T10e	10-pin connector, yellow, on protective housing for control units on left in engine compartment (chamber 2 - self-diagnosis connection)
T80	80-pin connector, on diesel direct injection system control unit
12	Earth point, on left in engine compartment
32	Earth point, on left behind dash panel
81	Earth connection 1, in dash panel wiring harness
156	Earth connection, in diesel direct injection wiring harness
A45	Connection (RPM signal), in dash panel wiring harness

Wiring Diagram VW PASSAT 1999 - Diesel direct injection system control unit - coolant temperature sender - metering adjuster - modulating piston travel sender - fuel temperature sender - fuel shut-off valve - commencement of injection valve

G2	Coolant temperature display sender (01039)
G62	Coolant temperature sender (00522)
G81	Fuel temperature sender (00539)
G149	Modulating piston movement sender (00765)
J248	Diesel direct injection system control unit, in protective housing for control units
N108	Commencement of injection valve (01269)
N109	Fuel switch-off valve (01237)
N146	Metering adjuster (01268)
T3	3-pin connector, near injection pump, only engine codes AHU, AFN
T8a	8-pin connector, near injection pump, only engine codes AHU, AFN
T10b	10-pin connector, black, on protective housing for control units on left in engine compartment
T10x	10-pin connector, near injection pump, only engine code AHH
T80	80-pin connector, on diesel direct injection system control unit
F25	Connection 1, in diesel direct injection system wiring harness
F26	Connection 2, in diesel direct injection system wiring harness

Wiring Diagram VW PASSAT 1999 - Diesel direct injection system control unit - air mass meter - exhaust gas recirculation valve - charge pressure control solenoid valve

F4	Reversing light switch
G70	Air mass meter (00553)
J248	Diesel direct injection system control unit, in protective housing for control units
J397	Radiator fan run-on relay
N18	Exhaust gas recirculation valve (01265)
N75	Charge pressure control solenoid valve (01262)
T10d	10-pin connector, brown, on protective housing for control units on left in engine compartment
T10e	10-pin connector, yellow, on protective housing for control units on left in engine compartment
T10g	10-pin connector, white, on protective housing for control units on left in engine compartment
T10k	10-pin connector, grey, left A-pillar coupling station
T80	80-pin connector, on diesel direct injection system control unit
A10	Connection (glow plug control), in dash panel wiring harness
A15	Positive connection (15), in instrument panel wiring harness
A27	Connection (speed signal), in dash panel wiring harness
A70	Connection (15a, fuse 231), in dash panel wiring harness
F25	Connection 1, in diesel direct injection system wiring harness
---	Only models with cruise control system (CCS)
*	Only engine code AFN

Wiring Diagram VW PASSAT 1999 - Diesel direct injection system control unit - cruise control system (CCS) switch - brake light switch - clutch pedal switch

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
F	Brake light switch (00526)
F36	Clutch pedal switch (00650)
F47	Cruise control system brake pedal switch/diesel direct injection system (00629)
J248	Diesel direct injection system control unit, in protective housing for control units
S13	Fuse 13 on fuse holder
T10	10-pin connector, black, next to steering column
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
T10e	10-pin connector, yellow, on protective housing for control units on left in engine compartment
T10g	10-pin connector, white, on protective housing for control units on left in engine compartment
T80	80-pin connector, on diesel direct injection system control unit
A89	Connection wire (brake light switch), in dash panel wiring harness
---	Only models with cruise control system (CCS)

Wiring Diagram VW PASSAT 1999 - Diesel direct injection system control unit - coolant glow plugs relay - coolant glow plugs

J248	Diesel direct injection system control unit, in protective housing for control units
J359	Low heat output relay (01193), control number (373), in protective housing for control units
J360	High heat output relay (01194), control number (370), in protective housing for control units
Q7	Coolant glow plugs
S109	Coolant glow plug fuse, in protective housing for control units
S143	Coolant glow plug fuse 2, in protective housing for control units
T10d	10-pin connector, brown, on protective housing for control units on left in engine compartment (chamber 8 - air conditioning system connection)
501	Screw connection 2 (30), on relay plate
A131	Connection (fuel consumption signal), in dash panel wiring harness

Wiring Diagram VW PASSAT 1999 - Oil pressure switch - fuel gauge sender - speedometer sender - coolant shortage indicator sender - fuel pump - fuel pump relay

F1	Oil pressure switch
G	Fuel gauge sender (00771)
G22	Speedometer sender, on left in gearbox
G23	Fuel pump (only for Syncro)
G32	Coolant shortage indicator sender
G169	Fuel level sender II (only for Syncro)
G237	Fuel level sender III (only for Syncro)
J17	Fuel pump relay (01259), on 13 position additional relay carrier (only for Syncro), control number (214)
S228	Fuse 28 on fuse holder
T3d	3-pin connector, front left in engine compartment
T4e	4-pin connector
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
T10e	10-pin connector, yellow, on protective housing for control units on left in engine compartment
75	Earth point, rear right pillar
156	Earth connection, in diesel direct injection wiring harness
197	Earth connection 4, in rear wiring harness
269	Earth connection (sender earth) 1, in dash panel wiring harness
A86	Connection (50a), in dash panel wiring harness

Wiring Diagram VW PASSAT 1999 - Dash panel insert - optical and acoustic oil pressure warning - odometer display - coolant shortage and coolant temperature indicator - fuel gauge

G1	Fuel gauge (0064)
G3	Coolant temperature gauge
G5	Rev. counter (00662)
H11	Oil pressure warning buzzer
J285	Display control unit, in dash panel insert (01317)
K2	Alternator warning lamp
K3	Oil pressure warning lamp (00755)
K28	Coolant temperature/coolant shortage warning lamp
K29	Glow period warning lamp (00626)
L75	Digital display illumination bulb
T32a	32-pin connector, blue, on dash panel insert
T32b	32-pin connector, green, on dash panel insert
Y4	Odometer display