Explanatory Notes to Wiring Diagrams

2 ground strap, gearbox – body

10 ground point in the drain channel compartment

11 ground point in the battery box

12 ground point, engine compartment left

42 ground point near the steering column

43 ground point, A-pillar lower right

45 ground point behind the instrument panel, center

49 ground point near the steering column, left

50 ground point, luggage compartment left

85 ground connection -1- in engine compartment wiring harness

98 ground connection in tailgate wiring harness

128 ground connection -1-, in interior light wiring harness

162 ground connection in fan motor wiring harness

200 ground connection (shielding), in engine compartment wiring harness

205 ground connection, in driver door wiring harness

206 ground connection in front passenger door wiring harness

220 ground connection, in engine wiring harness

238 ground connection -1-, in interior wiring harness

249 ground connection -2-, in interior wiring harness

255 ground connection -1-, in radio wiring harness

277 ground connection -3-, in interior wiring harness

278 Ground connection –4–, in interior wiring harness

279 Ground connection –5–, in interior wiring harness

280 Connection –2–, in engine compartment wiring harness

281 Ground connection –1–, in engine wiring harness

283 Ground connection –2–, in engine wiring harness

285 Ground connection –7–, in interior wiring harness

A Battery

A1 Positive connection (30a), in instrument panel wiring harness

A2 Positive connection –15–, in instrument panel wiring harness

A3 Positive connection –58–, in instrument panel wiring harness

A15 Positive connection –15–, in instrument panel wiring harness

A15 Connection (30al), in instrument panel wiring harness

A18 Connection –54–, in instrument panel wiring harness

A21 Positive connection (86s), in instrument panel wiring harness

A23 Positive connection –15–, in instrument panel wiring harness

A24 Connection (brake system control), in instrument panel wiring harness

A27 Connection (speed signal), in instrument panel wiring harness

A45 Connection (engine speed signal), in instrument panel wiring harness

A46 Positive connection (30 – from radio), in instrument panel wiring harness

A50 Positive connection (30as), in instrument panel wiring harness

A51 Connection –56–, in instrument panel wiring harness

A72 Connection –71–, in instrument panel wiring harness

A76 Connection (diagnostic line K), in instrument panel wiring harness

A80 Connection –1– (X), in instrument panel wiring harness

A81 Connection –2– (X), in instrument panel wiring harness

A84 Connection (58 L), in instrument panel wiring harness

A85 Connection (58R), in instrument panel wiring harness

A86 Connection (50a), in instrument panel wiring harness

A87 Connection (RF), in instrument panel wiring harness

A88 Connection (NSL), in instrument panel wiring harness

A89 Connection –54–, in instrument panel wiring harness

A97 Connection –53–, in instrument panel wiring harness

A98 Positive connection –4– (30a), in instrument panel wiring harness

A99 Connection –1– –87–, in instrument panel wiring harness

A100 Connection –2– –87–, in instrument panel wiring harness

A101 Connection –3– –87–, in instrument panel wiring harness

A103 Connection –2– –56–, in instrument panel wiring harness

A107 Connection (comfort closing), in instrument panel wiring harness

A108 Connection (speed signal), in instrument panel wiring harness

A114 Connection (headlight range adjustment), in instrument panel wiring harness

A121 Connection (High-Bus), in instrument panel wiring harness

A122 Connection (Low-Bus), in instrument panel wiring harness

A125 Connection (Crash signal), in instrument panel wiring harness

B Starter

B114 Connection (locking switch), in interior wiring harness

B115 Positive connection (30a), in interior wiring harness

B116 Connection (58d), in interior wiring harness

B117 Connection (58a right), in interior wiring harness

B126 Connection (87, window regulator control unit), in window regulator wiring harness

B131 Positive connection –54–, in interior wiring harness

B135 Connection (15a), in interior wiring harness

B138 Positive connection –1– (x), in interior wiring harness

B139 Connection (PL), in interior wiring harness

B140 Connection (PR), in interior wiring harness

B142 Positive connection –2– (56a), in interior wiring harness

B143 Positive connection (58R), in interior wiring harness

B144 Positive connection (58L), in interior wiring harness

B145 Positive connection (58b), in interior wiring harness

B147 Positive connection –2– –87–, in interior wiring harness

B149 Positive connection –2– (15a), in interior wiring harness

B150 Positive connection –2– (30a), in interior wiring harness

B152 Connection (BL), in interior wiring harness

B153 Connection (BR), in interior wiring harness

B154 Connection –1– (TK), in interior wiring harness

B155 Connection –2– (TK), in interior wiring harness

B156 Positive connection –4– (30a), in interior wiring harness

B156 Connection –2– (TK), in interior wiring harness

B160 Connection (brake system control), in interior wiring harness

B165 Connection –2–, in interior wiring harness

B175 Connection (central locking), in interior wiring harness

B178 Connection (speed signal), in interior wiring harness

B211 Connection –1– (Climatronic rear), in interior wiring harness

C Alternator

C1 Voltage regulator

D Ignition switch

D Cigarette lighter switch

D Positive connection (87a), in engine compartment wiring harness

D2 Immobilizer reading coil

D22 Connection (via fuse 234), in front right wiring harness

D78 Positive connection –1– (30a), in engine compartment wiring harness

D80 positive connection (87a), in engine compartment wiring harness

D140 connection (injector), in engine wiring harness

D141 connection (5V), in engine wiring harness

E1 light switch

E2 turn signal switch

E3 hazard warning switch

E4 manual dimming and light signal switch

E9 fresh air blower switch

E14 connector, 14-pin, cable duct, engine compartment, left side

E15 heated rear window switch

E18 fog light switch

E19 parking light switch

E20 switch and instrument panel illumination control

E22 wiper intermittent mode switch

E24 driver seat belt switch

E34 rear window wiper switch

E38 wiper intermittent control

E40 power window switch, front left (in driver door)

E41 power window switch, front right (in driver door)

E87 air conditioning control and display unit

E102 headlight range control

E107 power window switch, front right (in front passenger door)

E150 central locking switch, driver side

E159 fresh air and recirculation air flap switch

F brake light switch

F1 oil pressure switch

F2 door contact switch, driver side

F3 door contact switch, front passenger side

F4 reverse light switch

F9 parking brake control switch

F18 coolant fan thermoswitch

F34 brake fluid level contact

F36 clutch pedal switch

F54 coolant fan thermoswitch

F60 idle switch

F66 coolant gauge switch

F88 power steering switch

F216 switchable fog light contact switch

G fuel reserve sender

G1 fuel reserve gauge

G2 coolant temperature sender

G3 coolant temperature gauge

G5 tachometer

G6 fuel pump

G12 fuel reserve/level sender

G14 voltmeter

G17 outside temperature sensor

G21 speedometer

G22 vehicle speed sensor (Hall sensor on transmission)

G22 vehicle speed sensor (Hall sensor at transmission)

G220 Motronic control unit

G28 engine speed sensor

G34 brake pad wear sensor, front left

G39 oxygen sensor

G40 Hall sensor

G61 knock sensor 1

G62 coolant temperature sensor

G66 knock sensor 2

G69 throttle potentiometer

G70 air mass meter

G88 throttle valve control potentiometer

H horn activation

H2 horn

H3 buzzer/gong

H7 low tone horn

J4 dual tone horn relay

J2 hazard warning relay

J17 fuel pump relay

J30 rear window wiper and washer relay

J31 wiper and washer intermittent relay

J59 load relief relay for terminal X

J104 ABS control unit with EDS

J124 rear lamp monitor control unit

J189 self-diagnosis system

J217 AT control unit

J218 combination processor in instrument panel housing

J220 Motronic control unit

J226 starter lockout and reverse light relay

J234 airbag control unit

J293 coolant fan control unit

J338 throttle body control module

J361 control module for Simos

J446 parking aid control module

K1 high beam warning lamp

K2 generator warning lamp

K3 oil pressure warning lamp

K4 parking light warning lamp

K14 parking brake warning lamp

K149 engine electronics warning lamp

K16 fuel reserve warning lamp

K18 trailer towing warning lamp

K19 seat belt warning lamp

K28 coolant temperature warning lamp

K32 brake pad warning lamp

K37 washer fluid level warning lamp

K47 ABS warning lamp

K65 left turn signal warning lamp

K75 airbag warning lamp

K94 right turn signal warning lamp

K102 tailgate closed warning lamp

K117 anti-theft warning lamp

K132 electric throttle control failure lamp

K134 level control warning lamp

L1 left headlamp dual-filament bulb

L2 right headlamp dual-filament bulb

L9 light switch illumination lamp

L15 ashtray illumination lamp

L28 cigar lighter illumination lamp

L40 fog light switch illumination lamp

L46 left fog lamp bulb

L46 left fog lamp bulb

L47 right fog lamp bulb

L48 connector (15A) in heater control (Thermotronic) wiring harness

L54 illumination lamp/headlight range control

L66 connector in heater blower wiring harness

M1 left parking light bulb

M2 right side marker light bulb

M3 right parking light bulb

M4 left side marker light bulb

M5 front left turn signal bulb

M6 rear left turn signal bulb

M7 front right turn signal bulb

M8 rear right turn signal bulb

M9 left stop light bulb

M10 right stop light bulb

M16 left reversing light bulb

M17 right reversing light bulb

M18 left side repeater bulb

M19 right side repeater bulb

M25 high mounted stop light bulb

N ignition coil 1

N23 fresh air blower series resistor

N30 cylinder 1 injector

N31 cylinder 2 injector

N32 cylinder 3 injector

N33 cylinder 4 injector

N79 resistor (crankcase ventilation)

N80 solenoid valve 1 for charcoal canister system

N122 output stage

N128 ignition coil 2

N156 intake manifold change-over valve

N205 camshaft adjustment valve 1

N206 warm air blower series resistor with overheat fuse

P ignition coil connector

Q spark plugs

R34 connector -87-, in driver side door cable harness

R35 connector -87-, in front passenger side door cable harness

S37 window regulator fuse

S131 fuse 1

S132 fuse 2

S133 fuse 3

S134 fuse 4

S138 fuse 5

S162 fuse 1 in fuse box/battery box

S163 fuse 2 in fuse box/battery box

S164 fuse 3 in fuse box/battery box

T1a 1-pin connector, white, left side of luggage compartment

T2 2-pin connector, in drain compartment, right side

T2a 2-pin connector, black, behind instrument panel, right side

T2c 2-pin connector, black, in tailgate, right side

T2d 2-pin connector, black, in tailgate, left side

T2f 2-pin connector, engine compartment, left

T2h 2-pin connector, drain compartment, right

T2p 2-pin connector, behind console

T3b 3-pin connector, blue, engine compartment

T3b 3-pin connector, black, engine compartment

T3c 3-pin connector, brown, engine compartment

T3d 3-pin connector, white, engine compartment

T3d 3-pin connector, gray, engine compartment

T3e 3-pin connector, black, at main fuse box/battery

T3g 3-pin connector, at trailer tow socket

T4 4-pin connector, engine compartment, right

T4c 4-pin connector, behind console

T4j 4-pin connector, left headlight

T4l 4-pin connector, right headlight

T5 5-pin connector, right headlight

T5a 5-pin connector, yellow, behind steering column switch trim

T5b 5-pin connector, left headlight

T6a 6-pin connector, black, luggage compartment, left

T6b 6-pin connector, blue, luggage compartment, left

T6d 6-pin connector, brown, behind steering column switch trim

T6m 6-pin connector, brown, drain compartment

T8 8-pin connector, near radio

T8b 6-pin connector, blue, luggage compartment, left

T10 10-pin connector, white, drain compartment

T10b 10-pin connector, gray, drain compartment

T10d 10-pin connector, brown, clutch – A-pillar brace, left

T10f 10-pin connector, brown, clutch – A-pillar brace, left

T10k 10-pin connector, orange, drain compartment

T10l 10-pin connector, red, clutch brace A-pillar, left

T10m 10-pin connector, red, clutch brace A-pillar, right

T10n 10-pin connector, in door, left

T10o 10-pin connector, in door, right

T10x 10-pin connector, orange, drain compartment

T14 14-pin connector, cable duct, engine compartment, left

T16 16-pin connector, black, luggage compartment, left

T16 16-pin connector, black, center console shelf (diagnostic plug)

T17 17-pin connector, black, behind instrument panel, right

T20 20-pin connector, black, at instrument panel unit

T32 32-pin connector, blue, at instrument panel unit

T32a 32-pin connector, green, at instrument panel unit

T32b 32-pin connector, gray, at instrument panel unit

U1 cigarette lighter

U10 trailer tow socket

V wiper motor

V2 fresh air blower

V5 washer fluid pump

V7 coolant fan

V12 rear window wiper motor

V14 left window regulator motor

V15 right window regulator motor

V48 left headlight range adjustment motor

V49 right headlight range adjustment motor

V60 throttle valve control motor

V94 central locking motor with control unit for delayed switch-off of interior lights and anti-theft alarm

V94 central locking motor with control unit for delayed switch-off of interior light and anti-theft alarm

V154 fresh air/recirculation flap motor

W6 glove box light

W9 left footwell light

W10 right footwell light

W18 left luggage compartment light

W35 right luggage compartment light

X license plate light

Y analog clock

Z1 heated rear window

Z19 oxygen sensor heater

Z20 nozzle heater resistor, left

Z21 nozzle heater resistor, right