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Passat Current Flow Diagram No. 66 / 1
Edition 02.2000
1.9 ltr./85 kW Turbo-diesel engine, engine code AJM
From August 1998For alternatives to relay and fuse positions as well as multi-pin connector wiring - see "Fitting locations" section.
Relay locations on 13 position additionalrelay carrier, above relay plate:
5 - Fuel pump relay (214), on four wheel drive vehicles only
Relay locations on relay plate:
4 - Glow plugs relay (202)
Relay locations on the 8 position additionalrelay carrier, behind the relay plate:
Note!The number in brackets behind the part designation denotes the control number on the housing.
Fuse colours
30 A - green
25 A - white
20 A - yellow
15 A - blue
10 A - red
7.5 A - brown
5 A - beige
3 A - lilac
Passat Current Flow Diagram No. 66 / 2
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
ge = yellow
or = orange
rs = pink
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 plugs fuse, in protective housing for control units, left in engine compartment
T2b - 2-pin connector, blue, right on engine block
T10b - 10-pin connector, black, on protective housing for control units, left in engine compartment
T10d - 10-pin connector, brown, on protective housing for control units, left in engine compartment
T10e - 10-pin connector, orange, on protective housing for control units, 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 harnes
F31 - Connection (glow plugs - engine), in diesel direct injection system wiring harness
Passat Current Flow Diagram No. 66 / 3
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
ge = yellow
or = orange
rs = pink
Diesel direct injection system control unit, kick-down switch, idling switch, accelerator pedal position sender, relay for voltage supply - terminal 30
F8 - Kick-down switch
F60 - Idling 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, control number (219), in protective housing for control units
S102 - Engine control unit fuse, in protective housing for control units
T6a - 6-pin connector, on injection pump
T10b - 10-pin connector, black, on protective housing for control units, left in engine compartment
T10e - 10-pin connector, orange, on protective housing for control units, left in engine compartment
T15 - 15-pin connector, white, on protective housing for control units, left in engine compartment
T121 - 121-pin connector, on diesel direct injection system control unit
A2 - Positive (+) connection (15), in dash panel wiring harness
A52 - Positive connection -2- (30), in dash panel wiring harness
F28 - Connection -3-, in disel direct injection system wiring harness
Passat Current Flow Diagram No. 66 / 4
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
ge = yellow
or = orange
rs = pink
Diesel direct injection system control unit, engine speed sender, intake manifold pressure sender, intake manifold temperature sender, coolant temperature sender
G2 - Coolant temperature sender
G28 - Engine speed sender
G71 - Intake manifold pressure sender
G72 - Intake manifold temperature sender
G62 - Coolant temperature sender
J248 - Diesel direct injection system control unit, in protective housing for control units
T3 - 3-pin connector, near engine speed sender
T10b - 10-pin connector, black, on protective housing for control units, left in engine compartment
T10d - 10-pin connector, brown, on protective housing for control units, left in engine compartment
T121 - 121-pin connector, on diesel direct injection system control unit
12 - Earth point, in engine compartment, left
156 - Earth connection, in diesel direct injection system wiring harness
A45 - Connection (engine 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
F27 - Connection (screening), in diesel direct injection wiring harness
Passat Current Flow Diagram No. 66 / 5
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
ge = yellow
or = orange
rs = pink
Diesel direct injection system control unit, valves for unit injectors, change-over valve intake manifold flap, Hall sender for camshaft position
G40 - Hall sender for camshaft position
J248 - Diesel direct injection system control unit, in protective housing for control units
N240 - Unit injector solenoid valve, No. 1 cyl.
N241 - Unit injector solenoid valve, No. 2 cyl.
N242 - Unit injector solenoid valve, No. 3 cyl.
N243 - Unit injector solenoid valve, No. 4 cyl.
N239 - Intake manifold flap change-over valve
T8x - 8-pin connector, near fuel injection pump
T121 - 121-pin connector, on diesel direct injection system control unit
F25 - Connection -1-, in diesel direct injection system wiring harness
Passat Current Flow Diagram No. 66 / 6
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
ge = yellow
or = orange
rs = pink
Diesel direct injection system control unit, air mass meter, exhaust gas recirculation valve, charge pressure control solenoid valve
G70 - Air mass meter
J248 - Diesel direct injection system control unit, in protective housing for control units
J397 - Radiator fan run-on relay
N18 - Exhaust gas recirculation valve
N75 - Charge pressure control solenoid valve
T10d - 10-pin connector, brown, on protective housing for control units, left in engine compartment
T10e - 10-pin connector, orange, on protective housing for control units, left in engine compartment
T10k - 10-pin connector, grey, coupling station left A-pillar
T121 - 121-pin connector, on diesel direct injection system control unit
A10 - Connection (glow plug control), in dash panel wiring harness
A27 - Connection (speed signal), in dash panel wiring harness
F25 - Connection -1-, in diesel direct injection system wiring harness
F26 - Connection -2-, in diesel direct injection system wiring harness
Passat Current Flow Diagram No. 66 / 7
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
ge = yellow
or = orange
rs = pink
Diesel direct injection system control unit, cruise control system (CCS), 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) button (Set)
F - Brake light switch
F36 - Clutch pedal switch
F47 - Cruise cont. sys. brake pedal switch (diesel direct inj. system)
J248 - Diesel direct injection system control unit, in protective housing for control units
J397 - Radiator fan run-on relay
S13 - Fuse in relay plate fuse box
T10 - 10-pin connector, black, next to steering column
T10k - 10-pin connector, grey, coupling station left A-pillar
T15 - 15-pin connector, white, on protective housing for control units, left in engine compartment
T121 - 121-pin connector, on diesel direct injection system control unit
A15 - Positive connection (15), in instrument wiring harness
A89 - Connection (brake light switch), in dash panel wiring harness
A130 - Connection (CCS), in dash panel wiring harness
--- - For vehicles with cruise control system only
Passat Current Flow Diagram No. 66 / 8
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
ge = yellow
or = orange
rs = pink
Diesel direct injection system control unit, relay for coolant heating elements, coolant heating elements, fuel cooling
G81 - Fuel temperature sender
J248 - Diesel direct injection system control unit, in protective housing for control units
J359 - Low heat output relay, control number (373), in protective housing for control units
J360 - High heat output relay, control number (370), in protective housing for control units
J445 - - Fuel cooling pump relay, control number (214), in protective housing for control units
Q7 - Coolant heating elements
S109 - Coolant heater element fuse, in protective housing for control units
S143 - Coolant heater elements fuse 2, in protective housing for control units
S262 - - Fuel cooling pump fuse, in protective housing for control units
T10d - 10-pin connector, brown, on protective housing for control units, left in engine compartment (chamber 8 - connection for air conditioner)
T121 - 121-pin connector, on diesel direct injection system control unit
V166 - Cooling fuel pump
156 - Earth connection, in diesel direct injection system wiring harness
501 - Screw connection -2- (30), on relay plate
A131 - Connection (fuel consumption signal), in dash panel wiring harness
Passat Current Flow Diagram No. 66 / 9
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
ge = yellow
or = orange
rs = pink
Oil pressure switch, fuel gauge sender, speedometer sender, sender for coolant shortage warning indicator fuel pump, fuel pump relay
F1 - Oil pressure switch
G - Fuel gauge sender
G6 - Fuel pump *
G22 - Speedometer sender, reed contact - sender left in gearbox
G32 - Coolant shortage indicator sender
G169 - Fuel gauge sender -2- *
G237 - Fuel gauge sender -3- *
J17 - Fuel pump relay *, on the 13 position relay carrier control number (214)
S228 - Fuse in fuse holder *
T3d - 3-pin connector, front left in engine compartment
T4e - 4-pin connector
T6c - 6-pin connector, blue, coupling station left A-pillar
T10a - 10-pin connector, brown, coupling station left A-pillar
T10b - 10-pin connector, black, on protective housing for control units, left in engine compartment
75 - Earth point, rear pillar, right
156 - Earth connection, in diesel direct injection system wiring harness
197 - Earth connection -4-, in rear wiring harness
220 - Earth connection (sender earth), in engine wiring harness
269 - Earth connection (sender earth) -1-, in dash panel wiring harness
A86 - Connection (50a), in dash panel wiring harness
* - For vehicles with wheel drive only
Passat Current Flow Diagram No. 66 / 10
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
ge = yellow
or = orange
rs = pink
Dash panel insert, optical and acoustical oil pressure warning, odometer display, coolant shortage and coolant temperature indicator, fuel gauge
G1 - Fuel gauge
G3 - Coolant temperature gauge
G5 - Rev. counter
H11 - Oil pressure 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
K29 - Glow period warning lamp
L75 - Digital display illumination
T32a - 32-pin connector, blue, on dash panel insert
T32b - 32-pin connector, green, on dash panel insert
Y4 - Odometer display
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