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SEAT TOLEDO 2013 – Multimedia socket MEDIA-IN . Wiring diagrams, Pin Connector, Location

Wiring Diagram SEAT TOLEDO 2013 - Multimedia system control unit



Wiring Diagram  SEAT TOLEDO 2013 - Multimedia system control unit https://portal-diagnostov.com/license.html
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J503 Control unit with display for radio and navigation
J519 Onboard supply control unit
J650 Multimedia system control unit, behind dash panel, centre
R Radio
T12d 12-pin connector
T12f 12-pin connector
T73b 73-pin connector, white
  477 Earth connection (audio), in main wiring harness
  B397 Connection 1 (convenience CAN bus, high), in main wiring harness
  B406 Connection 1 (convenience CAN bus, low), in main wiring harness
  B434 Connection 1 (screen), in main wiring harness

Wiring Diagram SEAT TOLEDO 2013 - Multimedia system control unit - Connection for external audio sources



Wiring Diagram  SEAT TOLEDO 2013 - Multimedia system control unit - Connection for external audio sources https://portal-diagnostov.com/license.html
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J519 Onboard supply control unit
J650 Multimedia system control unit, behind dash panel, centre
R199 Connection for external audio sources
T4aa 4-pin connector
T4ab 4-pin connector
T12f 12-pin connector
T31a 31-pin connector
  482 Earth connection 2 (audio), in main wiring harness
  B434 Connection 1 (screen), in main wiring harness


SEAT TOLEDO 2013



SEAT TOLEDO 2013

Overview of the control units (only for vehicles with left-hand drive)
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1 -  Control unit with display for radio and navigation system -J503-
2 -  Ignition starter switch -D-
q   Pin assignment
3 -  Multi-function steering wheel control unit -J453-
q   Fitting location
4 -  Coil -F350-
q   Pin assignment
5 -  Left steering column switch -EX19- Right steering column switch -EX20-
q   Pin assignment
6 -  Headlight range control adjuster -E102-
q   Fitting location
7 -  Light switch -E1-
q   Fitting location
q   Pin assignment
8 -  Day driving light switch-off switch -E579-
q   up to May 2013
9 -  Onboard control unit -J519- Data bus diagnostic interface -J533-
q   Fitting location
q   Fuse assignment, as of September 2012
q   Fuse assignment as of November 2012
q   Fuse assignment as of May 2013
10 -  Control unit in dash panel insert -J285- Immobilizer control unit -J362-
q   Pin assignment
q   Warning light control in dash panel insert
q   Display control in dash panel insert
11 -  Power steering control unit -J500-
q   electromechanical power steering
q   Fitting location
12 -  Engine control unit -J623-
q   Fitting location
q   52-pin + 28-pin assignment
q   94-pin + 60-pin assignment
q   81-pin + 40-pin assignment
13 -  Automatic gearbox control unit -J217-
14 -  Windscreen wiper motor -V-
q   Fitting location
q   Pin assignment
15 -  Battery monitor control unit -J367-
q   Fitting location
16 -  Power steering control unit -J500-
q   electrohydraulic power-assisted steering
q   Fitting location
q   Pin assignment
17 -  Radiator fan control unit -J293-
q   Fitting location (not valid for engine identification characters CAXA)
q   Fuse assignment (not valid for engine identification characters CAXA)
18 -  Automatic glow period control unit -J179-
q   Fitting location
19 -  Double clutch gearbox mechatronics -J743-
q   Fitting location
q   Pin assignment
20 -  Radiator fan control unit -J293-
q   Fuse assignment (applies for engine identification characters CAXA CAXA)
21 -  Lambda probe after catalytic converter -G130-
q   Fitting location
q   Pin assignment
22 -  Lambda probe -G39-
q   Fitting location
q   Pin assignment
23 -  ABS control unit -J104-
q   Fitting location
q   Pin assignment
24 -  Airbag control unit -J234-
q   Fitting location
q   Pin assignment
25 -  Fresh air blower control unit -J126-
26 -  Heated front seat control unit -J774-
q   Fitting location
27 -  Multimedia system control unit -J650-
q   Pin assignment
28 -  Fresh air and air recirculation flap control unit -J251- Air conditioning system control unit -J301- Climatronic control unit -J255-
q   Pin assignment Fresh air and air recirculating flap control unit -J251-
q   Pin assignment Air conditioning system control unit -J301-
q   Pin assignment Climatronic control unit -J255-

   
Overview of the control units (only for vehicles with right-hand drive)
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1 -  Fresh air and air recirculation flap control unit -J251- Air conditioning system control unit -J301- Climatronic control unit -J255-
q   Pin assignment Fresh air and air recirculating flap control unit -J251-
q   Pin assignment Air conditioning system control unit -J301-
q   Pin assignment Climatronic control unit -J255-
2 -  Control unit with display for radio and navigation system -J503-
3 -  Multimedia system control unit -J650-
q   Pin assignment
4 -  Fresh air blower control unit -J126-
5 -  ABS control unit -J104-
q   Fitting location
q   Pin assignment
6 -  Engine control unit -J623-
q   Fitting location
q   52-pin + 28-pin assignment
q   94-pin + 60-pin assignment
q   81-pin + 40-pin assignment
7 -  Automatic gearbox control unit -J217-
8 -  Battery monitor control unit -J367-
q   Fitting location
9 -  Power steering control unit -J500-
q   electrohydraulic power-assisted steering
q   Fitting location
q   Pin assignment
10 -  Radiator fan control unit -J293-
q   Fitting location (not valid for engine identification characters CAXA)
q   Fuse assignment (not valid for engine identification characters CAXA)
11 -  Automatic glow period control unit -J179-
q   Fitting location
12 -  Double clutch gearbox mechatronics -J743-
q   Fitting location
q   Pin assignment
13 -  Radiator fan control unit -J293-
q   Fuse assignment (applies for engine identification characters CAXA CAXA)
14 -  Lambda probe after catalytic converter -G130-
q   Fitting location
q   Pin assignment
15 -  Lambda probe -G39-
q   Fitting location
q   Pin assignment
16 -  Windscreen wiper motor -V-
q   Fitting location
q   Pin assignment
17 -  Airbag control unit -J234-
q   Fitting location
q   Pin assignment
18 -  Power steering control unit -J500-
q   electromechanical power steering
q   Fitting location
19 -  Heated front seat control unit -J774-
q   Fitting location
20 -  Control unit in dash panel insert -J285- Immobilizer control unit -J362-
q   Pin assignment
q   Warning light control in dash panel insert
q   Display control in dash panel insert
21 -  Onboard control unit -J519- Data bus diagnostic interface -J533-
q   Fitting location
q   Fuse assignment, as of September 2012
q   Fuse assignment as of November 2012
q   Fuse assignment as of May 2013
22 -  Day driving light switch-off switch -E579-
q   up to May 2013
23 -  Light switch -E1-
q   Fitting location
q   Pin assignment
24 -  Headlight range control adjuster -E102-
q   Fitting location
25 -  Ignition starter switch -D-
q   Pin assignment
26 -  Left steering column switch -EX19- Right steering column switch -EX20-
q   Pin assignment
27 -  Coil -F350-
q   Pin assignment
28 -  Multi-function steering wheel control unit -J453-
q   Fitting location

Pin assignment
 
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1 - T7a15
2 - T7a30
3 - T7a50
4 - T7aP
5 - T7a86s
6 - T7a75
7 - T7a30

Fitting location
In multi-function steering wheel -arrow-.
 
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Coil -F350-
Pin assignment
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A - Coil -F350-
B - 12-pin connector, at wiring harness - T12a
C - 16-pin connector, at wiring harness - T16d

   
Left steering column switch -EX19- Right steering column switch -EX20-
Pin assignment
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A - Left steering column switch -EX19- Right steering column switch -EX20-
B - 10-pin connector, at wiring harness - T10c
C - 16-pin connector, at wiring harness - T16c

Fitting location (only for vehicles with left-hand drive)
At the left dash panel, -arrow B-.
 
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Fitting location (only for vehicles with right-hand drive)
At the right dash panel, -arrow B-.
Light switch -E1-
 
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Fitting location (only for vehicles with left-hand drive)
At the left dash panel, -arrow A-.
 
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Fitting location (only for vehicles with right-hand drive)
At the right dash panel, -arrow A-.
 
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Pin assignment
 
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A - Light switch -E1-
B - 17-pin connector, at wiring harness - T17a

   
Control unit in dash panel insert -J285- Immobilizer control unit -J362-
Pin assignment
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A - Control unit in dash panel insert -J285- Immobilizer control unit -J362-
B - 32-pin connector, at wiring harness - T32a

   
32-pin connector -T32a-
1 - Sender for fuel gauge display -G- , Fuel pump control unit -J538-
2 - Sender for fuel gauge display -G- , Fuel pump control unit -J538-
3 - not assigned
4 - not assigned
5 - not assigned
6 - not assigned
7 - Immobilizer reading coil -D2-
8 - Immobilizer reading coil -D2-
9 - Speed signal - Ouput
10 - Sender for speedometer -G22- (up to November 2012)
  - Automatic gearbox control unit -J217-
11 - Oil level and oil temperature sender -G266-
12 - not assigned
13 - Rear fog light warning light -K13-
14 - Main beam warning light -K1-
15 - not assigned
16 - Terminal 31 - Input
17 - Windscreen washer fluid level sender -G33-
18 - Coolant shortage indicator sender -G32-
19 - Ambient temperature sensor -G17-
20 - Terminal 31 (sender mass) - Output
21 - Multi-function display -J119-
  - Function selection switch -E91-
22 - Multi-function display -J119-
  - Function selection switch -E91-
23 - Multi-function display -J119-
  - Reset button -E92-
24 - not assigned
25 - Handbrake warning switch -F9-
26 - Brake fluid level warning contact -F34-
27 - Oil pressure switch -F1-
28 - Drive train CAN bus High (without startstop system)
  - CAN bus dash panel insert High (for startstop system)
29 - Drive train CAN bus Low (without startstop system)
  - CAN bus dash panel insert Low (for startstop system)
30 - Fog light warning light -K17-
31 - Terminal 15 - Input
32 - Terminal 30 - Input

   
Display control in dash panel insert K
Display Signal source
Fuel gauge -G1- T32a1, T32a2
Coolant temperature gauge -G3- CAN bus Engine control unit -J623-
Rev. counter -G5- CAN bus Engine control unit -J623-
Speedometer -G21- T32a10, CAN bus ABS control unit -J104-
Buzzer and gong -H3- CAN bus Control unit in dash panel insert -J285-
Multi-function display -J119- T32a19, 21, 22, 23, CAN bus Engine control unit -J623- , Control unit in dash panel insert -J285-
Digital clock -Y2- CAN bus Control unit in dash panel insert -J285-
Odometer display -Y4- CAN bus Control unit in dash panel insert -J285-
Selector lever position indicator -Y6- CAN bus Automatic gearbox control unit -J217- , Double clutch gearbox mechatronics -J743-

Fitting location (only for vehicles with left-hand drive)
below the left dash panel, -arrow-.
 
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Fitting location (only for vehicles with right-hand drive)
Below the right dash panel, -arrow-.
 
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Pin assignment, as of September 2012
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A - 73-pin connector (black) - T73a
B - 73-pin connector (white) - T73b

   
73-pin connector -T73a- (black)
1 - not assigned
2 - not assigned (without startstop system)
  - Output for dipped beam bulb, left -M29- (for startstop system)
3 - not assigned
4 - Output for Interior light (31)
5 - not assigned (without startstop system)
  - Output for day driving light bulb, right -L175- (for startstop system)
6 - not assigned (without startstop system)
  - Output for tail and rear fog light bulb, left -M41- (for startstop system and only for vehicles with left-hand drive)
  - Output for tail and rear fog light bulb, right -M42- (for startstop system and only for vehicles with right-hand drive)
7 - Input of light switch -E1- (fog lights)
8 - not assigned
9 - not assigned
10 - Output for central locking motor in rear lid -V53-
11 - Output for central locking motor in driver door -V56- , central locking motor in front passenger door -V57- , central locking motor in rear left door, lock -V214- , central locking motor in rear right door, lock -V215-
 
12 - Output for central locking motor in driver door -V56- , motor for SAFE function of central locking in driver door -V161-
13 - Output for motor for SAFE function of central locking in driver door -V161- , motor for SAFE function of central locking in front passenger door -V162- , motor for SAFE function of central locking in rear left door -V163- , motor for SAFE function of central locking in rear right door -V164-
14 - Input (31) - for central locking
15 - Output for central locking motor in front passenger door -V57- , motor for SAFE function of central locking in front passenger door -V162- , central locking motor in rear left door, lock -V214- , central locking motor in rear right door, lock -V215-
16 - Input (30) - for central locking
17 - Input of central locking lock unit, rear left -F222-
18 - Input of central locking lock unit, rear right -F223-
19 - Input of door contact switch, driver side -F2- (31)
20 - Input of door contact switch, front passenger side -F3- (31)
21 - Input of central locking lock unit, front passenger side -F221-
22 - Input of central locking lock unit, driver side -F220-
23 - Input of rear lid handle release button -E234- (31)
24 - Input of central locking lock unit, driver side -F220- , central locking lock unit, front passenger side -F221-
25 - Input of interior button for central locking driver's side -E308-
26 - Input of door contact switch, rear right -F11-
27 - Input of bonnet contact switch -F266- (31)
28 - Input of hazard warning light button -E229- (31)
29 - Input of horn activation -H- (31)
30 - Input of rear lid lock unit -F256- (31)
31 - not assigned
32 - Input of turn signal switch -E2- (right turn signal) (31)
33 - Input of turn signal switch -E2- (left turn signal) (31)
34 - Input of door contact switch, rear left -F10-
35 - not assigned
36 - Output for seat heating
37 - not assigned
38 - Output for heated exterior mirror, driver side, heated exterior mirror, front passenger side
39 - Input (31)
40 - Output for side light bulb, right -M3- (58R), Tail light bulb, right -M2- , Brake and tail light bulb, right -M22- , Tail and rear fog light bulb, right -M42-
41 - Output for side light bulb, left -M1- (58L), Tail light bulb, left -M4- , Brake and tail light bulb, left -M21- , Tail and rear fog light bulb, left -M41-
42 - Input of ignition starter switch -D- (86s)
43 - Input of brake light switch -F- (54)
44 - Input of ignition starter switch -D- (15)
45 - Input of light switch -E1- (58R)
46 - not assigned
47 - not assigned
48 - not assigned
49 - Output for headlight washer system relay -J39-
50 - not assigned
51 - not assigned
52 - Output for fuel supply relay -J643- (31), fuel pump control unit -J538-
53 - not assigned
54 - Output for X contact relief relay 2 -J339- (for start-stop system)
55 - not assigned
56 - Output for hazard warning light system warning light -K6- + bulb for button illumination -L76-
57 - Output for deactivation warning light of interior monitoring and vehicle inclination -K248-
58 - Output for warning light for SAFE function of central locking -K133-
59 - Output for interior locking warning light, driver side -K174-
60 - Output for heated rear window warning light -K10-
61 - not assigned
62 - Input (56a) of headlight dipperflasher switch -E4- (for startstop system)
63 - not assigned (without startstop system)
  - Input (30) (for startstop system)
64 - Input for heated exterior mirror driver's side -Z4- , heated exterior mirror front passenger's side -Z5-
65 - Output for front interior light -W1- , rear interior light -W43- , glove box light -W6- , luggage compartment light, left -W18-
66 - Input for front interior light -W1- , rear interior light -W43- , glove box light -W6- , luggage compartment light, left -W18-
67 - not assigned
68 - Input for windscreen wiper motor -V- (30)
69 - Output for windscreen wiper motor -V- (1st stage)
70 - Input (31)
71 - Output for windscreen wiper motor -V- (2nd stage)
72 - Output for high tone horn -H2- , low tone horn -H7-
73 - Input (30) for high tone horn -H2- , low tone horn -H7-

   
73-pin connector -T73b- (white)
1 - not assigned
2 - not assigned (without startstop system)
  - Output for dipped beam bulb, right -M31- (for startstop system)
3 - not assigned (without startstop system)
  - Output for day driving light bulb, left -L174- (for startstop system)
4 - not assigned
5 - not assigned
6 - not assigned
7 - not assigned (without startstop system)
  - Output for number plate light, left -X4- , number plate light, right -X5- (for startstop system)
8 - not assigned
9 - Output for fog light bulb, left -L22- , static cornering light, left -M51-
10 - Output for fog light bulb, right -L23- , static cornering light, right -M52-
11 - Input for static cornering light left -M51- , static cornering light right -M52- , Lamp for fog-light left -L22- , Bulb for fog light right -L23- , Bulb for reverse light left -M16- , Bulb for reverse light right -M17- (30)
 
12 - Output for reversing light bulb, left -M16- , reversing light bulb, right -M17-
13 - Input for turn signal, brake light (30)
14 - Output for turn signal bulb, front left -M5- , turn signal bulb, rear left -M6- , side turn signal bulb, left -M18-
15 - Output for turn signal bulb, front right -M7- , turn signal bulb, rear right -M8- , side turn signal bulb, right -M19-
16 - Output for brake and tail light bulb, left -M21- , brake and tail light bulb, right -M22- , bulb for high level brake light -M25- (54)
17 - LIN bus Multi-function steering wheel control unit -J453-
18 - Drive train CAN bus, low
19 - Drive train CAN bus, high
20 - Convenience CAN bus, high
21 - Convenience CAN bus, low
22 - Drive train CAN bus low (switched)
23 - Drive train CAN bus high (switched)
24 - LIN bus interior monitoring sensor -G273- , vehicle inclination sender -G384-
25 - not assigned
26 - not assigned
27 - Input of intermittent wiper switch -E22- (1st stage)
28 - not assigned
29 - not assigned
30 - Input of deactivation button of interior monitoring and vehicle inclination -E616-
31 - Input of heated rear window button -E230- (31)
32 - Input of windscreen wiper motor -V-
33 - not assigned
34 - Input of light switch -E1- (58L)
35 - not assigned
36 - LIN bus alarm horn -H12-
37 - LIN bus battery monitoring (for startstop system)
38 - Input (31)
39 - Input (30)
40 - not assigned
41 - not assigned
42 - not assigned
43 - not assigned (without startstop system)
  - Input of fog light and rear fog light switch -E23- (for startstop system)
44 - Input of CCS SET button -E227- (SET-)
45 - Input of CCS switch -E45- (onoff)
46 - Input of CCS SET button -E227- (RES+)
47 - Input of CCS switch -E45- (off)
48 - Input of reversing light switch -F4- (not valid for vehicles with automatic gearbox)
49 - Input of alternator with voltage regulator -CX1- terminal L (without startstop system)
50 - Input of ignition starter switch -D- (50)
51 - Input of ignition starter switch -D- (75) (without startstop system)
52 - Input of light switch -E1- (for headlight washer system)
53 - Input of intermittent wiper switch -E22- (2nd stage)
54 - CAN bus dash panel insert High (for startstop system)
55 - not assigned
56 - not assigned
57 - CAN bus dash panel insert Low (for startstop system)
58 - Input of exterior mirror heating button
59 - Input of fuse in fuse holder A on the battery (30 analogue)
60 - Input (31 analog)
61 - Input of rear wiper switch -E34-
  - Output for rear window wiper motor -V12-
62 - Input of intermittent wiper control -E38-
63 - Output for heated rear window -Z1-
64 - not assigned
65 - not assigned
66 - not assigned
67 - Input for heated rear window -Z1- (30)
68 - not assigned (without startstop system)
  - Input (30) (for startstop system)
69 - not assigned
70 - not assigned
71 - not assigned
72 - not assigned
73 - not assigned

   
Pin assignment, as of November 2012
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A - 73-pin connector (black) - T73a
B - 73-pin connector (white) - T73b

   
73-pin connector -T73a- (black)
1 - not assigned
2 - not assigned (without startstop system)
  - Output for dipped beam bulb, left -M29- (for startstop system)
3 - not assigned
4 - Output for Interior light (31)
5 - not assigned (without startstop system)
  - Output for day driving light bulb, right -L175- (for startstop system)
6 - not assigned (without startstop system)
  - Output for tail and rear fog light bulb, left -M41- (for startstop system and only for vehicles with left-hand drive)
  - Output for tail and rear fog light bulb, right -M42- (for startstop system and only for vehicles with right-hand drive)
7 - Input of light switch -E1- (fog lights)
8 - not assigned
9 - not assigned
10 - Output for central locking motor in rear lid -V53-
11 - Output for central locking motor in driver door -V56- , central locking motor in front passenger door -V57- , central locking motor in rear left door, lock -V214- , central locking motor in rear right door, lock -V215-
 
12 - Output for central locking motor in driver door -V56- , motor for SAFE function of central locking in driver door -V161-
13 - Output for motor for SAFE function of central locking in driver door -V161- , motor for SAFE function of central locking in front passenger door -V162- , motor for SAFE function of central locking in rear left door -V163- , motor for SAFE function of central locking in rear right door -V164-
14 - Input (31) - for central locking
15 - Output for central locking motor in front passenger door -V57- , motor for SAFE function of central locking in front passenger door -V162- , central locking motor in rear left door, lock -V214- , central locking motor in rear right door, lock -V215-
16 - Input (30) - for central locking
17 - Input of central locking lock unit, rear left -F222-
18 - Input of central locking lock unit, rear right -F223-
19 - Input of door contact switch, driver side -F2- (31)
20 - Input of door contact switch, front passenger side -F3- (31)
21 - Input of central locking lock unit, front passenger side -F221-
22 - Input of central locking lock unit, driver side -F220-
23 - Input of rear lid handle release button -E234- (31)
24 - Input of central locking lock unit, driver side -F220- , central locking lock unit, front passenger side -F221-
25 - Input of interior button for central locking driver's side -E308-
26 - Input of door contact switch, rear right -F11-
27 - Input of bonnet contact switch -F266- (31)
28 - Input of hazard warning light button -E229- (31)
29 - Input of horn activation -H- (31)
30 - Input of rear lid lock unit -F256- (31)
31 - not assigned
32 - Input of turn signal switch -E2- (right turn signal) (31)
33 - Input of turn signal switch -E2- (left turn signal) (31)
34 - Input of door contact switch, rear left -F10-
35 - not assigned
36 - Output for seat heating
37 - not assigned
38 - Output for heated exterior mirror, driver side, heated exterior mirror, front passenger side
39 - Input (31)
40 - Output for side light bulb, right -M3- (58R), Tail light bulb, right -M2- , Brake and tail light bulb, right -M22- , Tail and rear fog light bulb, right -M42-
41 - Output for side light bulb, left -M1- (58L), Tail light bulb, left -M4- , Brake and tail light bulb, left -M21- , Tail and rear fog light bulb, left -M41-
42 - Input of ignition starter switch -D- (86s)
43 - Input of brake light switch -F- (54)
44 - Input of ignition starter switch -D- (15)
45 - Input of light switch -E1- (58R)
46 - not assigned
47 - not assigned
48 - not assigned
49 - Output for headlight washer system relay -J39-
50 - not assigned
51 - not assigned
52 - Output for fuel supply relay -J643- (31), fuel pump control unit -J538-
53 - not assigned
54 - Output for X contact relief relay 2 -J339- (for start-stop system)
55 - Output for starter lock relay -J207-
56 - Output for hazard warning light system warning light -K6- + bulb for button illumination -L76-
57 - Output for deactivation warning light of interior monitoring and vehicle inclination -K248-
58 - Output for warning light for SAFE function of central locking -K133-
59 - Output for interior locking warning light, driver side -K174-
60 - Output for heated rear window warning light -K10-
61 - not assigned
62 - Input (56a) of headlight dipperflasher switch -E4- (for startstop system)
63 - not assigned (without startstop system)
  - Input (30) (for startstop system)
64 - Input for heated exterior mirror driver's side -Z4- , heated exterior mirror front passenger's side -Z5-
65 - Output for front interior light -W1- , rear interior light -W43- , glove box light -W6- , luggage compartment light, left -W18-
66 - Input for front interior light -W1- , rear interior light -W43- , glove box light -W6- , luggage compartment light, left -W18-
67 - not assigned
68 - Input for windscreen wiper motor -V- (30)
69 - Output for windscreen wiper motor -V- (1st stage)
70 - Input (31)
71 - Output for windscreen wiper motor -V- (2nd stage)
72 - Output for high tone horn -H2- , low tone horn -H7-
73 - Input (30) for high tone horn -H2- , low tone horn -H7-

   
73-pin connector -T73b- (white)
1 - not assigned
2 - not assigned (without startstop system)
  - Output for dipped beam bulb, right -M31- (for startstop system)
3 - not assigned (without startstop system)
  - Output for day driving light bulb, left -L174- (for startstop system)
4 - not assigned
5 - not assigned
6 - not assigned
7 - not assigned (without startstop system)
  - Output for number plate light, left -X4- , number plate light, right -X5- (for startstop system)
8 - not assigned
9 - Output for fog light bulb, left -L22- , static cornering light, left -M51-
10 - Output for fog light bulb, right -L23- , static cornering light, right -M52-
11 - Input for static cornering light left -M51- , static cornering light right -M52- , Lamp for fog-light left -L22- , Bulb for fog light right -L23- , Bulb for reverse light left -M16- , Bulb for reverse light right -M17- (30)
 
12 - Output for reversing light bulb, left -M16- , reversing light bulb, right -M17-
13 - Input for turn signal, brake light (30)
14 - Output for turn signal bulb, front left -M5- , turn signal bulb, rear left -M6- , side turn signal bulb, left -M18-
15 - Output for turn signal bulb, front right -M7- , turn signal bulb, rear right -M8- , side turn signal bulb, right -M19-
16 - Output for brake and tail light bulb, left -M21- , brake and tail light bulb, right -M22- , bulb for high level brake light -M25- (54)
17 - LIN bus Multi-function steering wheel control unit -J453-
18 - Drive train CAN bus, low
19 - Drive train CAN bus, high
20 - Convenience CAN bus, high
21 - Convenience CAN bus, low
22 - Drive train CAN bus low (switched)
23 - Drive train CAN bus high (switched)
24 - LIN bus interior monitoring sensor -G273- , vehicle inclination sender -G384-
25 - not assigned
26 - not assigned
27 - Input of intermittent wiper switch -E22- (1st stage)
28 - not assigned
29 - not assigned
30 - Input of deactivation button of interior monitoring and vehicle inclination -E616-
31 - Input of heated rear window button -E230- (31)
32 - Input of windscreen wiper motor -V-
33 - not assigned
34 - Input of light switch -E1- (58L)
35 - not assigned
36 - LIN bus alarm horn -H12-
37 - LIN bus battery monitoring (for startstop system)
38 - Input (31)
39 - Input (30)
40 - not assigned
41 - not assigned
42 - not assigned
43 - not assigned (without startstop system)
  - Input of fog light and rear fog light switch -E23- (for startstop system)
44 - Input of CCS SET button -E227- (SET-)
45 - Input of CCS switch -E45- (onoff)
46 - Input of CCS SET button -E227- (RES+)
47 - Input of CCS switch -E45- (off)
48 - Input of reversing light switch -F4- (not valid for vehicles with automatic gearbox)
49 - Input of alternator with voltage regulator -CX1- terminal L (without startstop system)
50 - Input of ignition starter switch -D- (50)
51 - Input of ignition starter switch -D- (75) (without startstop system)
52 - Input of light switch -E1- (for headlight washer system)
53 - Input of intermittent wiper switch -E22- (2nd stage)
54 - CAN bus dash panel insert High (for startstop system)
55 - Input of dual clutch gearbox mechatronics -J743- (without start-stop system)
56 - not assigned
57 - CAN bus dash panel insert Low (for startstop system)
58 - Input of exterior mirror heating button
59 - Input (30 analog)
60 - Input (31 analog)
61 - Input of rear wiper switch -E34-
  - Output for rear window wiper motor -V12-
62 - Input of intermittent wiper control -E38-
63 - Output for heated rear window -Z1-
64 - not assigned
65 - not assigned
66 - not assigned
67 - Input for heated rear window -Z1- (30)
68 - not assigned (without startstop system)
  - Input (30) (for startstop system)
69 - not assigned
70 - not assigned
71 - not assigned
72 - not assigned
73 - not assigned

   
Pin assignment, as of May 2013
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A - 73-pin connector (black) - T73a
B - 73-pin connector (white) - T73b

   
73-pin connector -T73a- (black)
1 - not assigned
2 - not assigned (without startstop system)
  - Output for dipped beam bulb, left -M29- (for startstop system)
3 - not assigned
4 - Output for Interior light (31)
5 - not assigned (without startstop system)
  - Output for day driving light bulb, right -L175- (for startstop system)
6 - not assigned (without startstop system)
  - Output for tail and rear fog light bulb, left -M41- (for startstop system and only for vehicles with left-hand drive)
  - Output for tail and rear fog light bulb, right -M42- (for startstop system and only for vehicles with right-hand drive)
7 - Input of light switch -E1- (fog lights)
8 - not assigned
9 - not assigned
10 - Output for central locking motor in rear lid -V53-
11 - Output for central locking motor in driver door -V56- , central locking motor in front passenger door -V57- , central locking motor in rear left door, lock -V214- , central locking motor in rear right door, lock -V215-
 
12 - Output for central locking motor in driver door -V56- , motor for SAFE function of central locking in driver door -V161- , tank filler flap locking motor -V155-
13 - Output for motor for SAFE function of central locking in driver door -V161- , motor for SAFE function of central locking in front passenger door -V162- , motor for SAFE function of central locking in rear left door -V163- , motor for SAFE function of central locking in rear right door -V164-
14 - Input (31) - for central locking
15 - Output for central locking motor in front passenger door -V57- , motor for SAFE function of central locking in front passenger door -V162- , central locking motor in rear left door, lock -V214- , central locking motor in rear right door, lock -V215-
16 - Input (30) - for central locking
17 - Input of central locking lock unit, rear left -F222-
18 - Input of central locking lock unit, rear right -F223-
19 - Input of door contact switch, driver side -F2- (31)
20 - Input of door contact switch, front passenger side -F3- (31)
21 - Input of central locking lock unit, front passenger side -F221-
22 - Input of central locking lock unit, driver side -F220-
23 - Input of rear lid handle release button -E234- (31)
24 - Input of central locking lock unit, driver side -F220- , central locking lock unit, front passenger side -F221-
25 - Input of interior button for central locking driver's side -E308-
26 - Input of door contact switch, rear right -F11-
27 - Input of bonnet contact switch -F266- (31)
28 - Input of hazard warning light button -E229- (31)
29 - Input of horn activation -H- (31)
30 - Input of rear lid lock unit -F256- (31)
31 - not assigned
32 - Input of turn signal switch -E2- (right turn signal) (31)
33 - Input of turn signal switch -E2- (left turn signal) (31)
34 - Input of door contact switch, rear left -F10-
35 - not assigned
36 - Output for seat heating
37 - not assigned
38 - Output for heated exterior mirror, driver side, heated exterior mirror, front passenger side
39 - Input (31)
40 - Output for side light bulb, right -M3- (58R), Tail light bulb, right -M2- , Brake and tail light bulb, right -M22- , Tail and rear fog light bulb, right -M42-
41 - Output for side light bulb, left -M1- (58L), Tail light bulb, left -M4- , Brake and tail light bulb, left -M21- , Tail and rear fog light bulb, left -M41-
42 - Input of ignition starter switch -D- (86s)
43 - Input of brake light switch -F- (54)
44 - Input of ignition starter switch -D- (15)
45 - Input of light switch -E1- (58R)
46 - not assigned
47 - not assigned
48 - not assigned
49 - Output for headlight washer system relay -J39-
50 - not assigned
51 - not assigned
52 - Output for fuel supply relay -J643- (31), fuel pump control unit -J538-
53 - not assigned
54 - Output for X contact relief relay 2 -J339- (for start-stop system)
55 - Output for starter lock relay -J207-
56 - Output for hazard warning light system warning light -K6- + bulb for button illumination -L76-
57 - Output for deactivation warning light of interior monitoring and vehicle inclination -K248-
58 - Output for warning light for SAFE function of central locking -K133-
59 - Output for interior locking warning light, driver side -K174-
60 - Output for heated rear window warning light -K10-
61 - not assigned
62 - Input (56a) of headlight dipperflasher switch -E4- (for startstop system)
63 - not assigned (without startstop system)
  - Input (30) (for startstop system)
64 - Input for heated exterior mirror driver's side -Z4- , heated exterior mirror front passenger's side -Z5-
65 - Output for front inside light -W1- , rear inside light -W43- , rear left reading light -W11- , rear right reading light -W12- , glove compartment light -W6- , left glovebox light -W18-
66 - Input for front inside light -W1- , rear inside light -W43- , rear left reading light -W11- , rear right reading light -W12- , glove compartment light -W6- , left glovebox light -W18-
67 - not assigned
68 - Input for windscreen wiper motor -V- (30)
69 - Output for windscreen wiper motor -V- (1st stage)
70 - Input (31)
71 - Output for windscreen wiper motor -V- (2nd stage)
72 - Output for high tone horn -H2- , low tone horn -H7-
73 - Input (30) for high tone horn -H2- , low tone horn -H7-

   
73-pin connector -T73b- (white)
1 - not assigned
2 - not assigned (without startstop system)
  - Output for dipped beam bulb, right -M31- (for startstop system)
3 - not assigned (without startstop system)
  - Output for day driving light bulb, left -L174- (for startstop system)
4 - not assigned
5 - not assigned
6 - not assigned
7 - not assigned (without startstop system)
  - Output for number plate light, left -X4- , number plate light, right -X5- (for startstop system)
8 - not assigned
9 - Output for fog light bulb, left -L22- , static cornering light, left -M51-
10 - Output for fog light bulb, right -L23- , static cornering light, right -M52-
11 - Input for static cornering light left -M51- , static cornering light right -M52- , Lamp for fog-light left -L22- , Bulb for fog light right -L23- , Bulb for reverse light left -M16- , Bulb for reverse light right -M17- (30)
 
12 - Output for reversing light bulb, left -M16- , reversing light bulb, right -M17-
13 - Input for turn signal, brake light (30)
14 - Output for turn signal bulb, front left -M5- , turn signal bulb, rear left -M6- , side turn signal bulb, left -M18-
15 - Output for turn signal bulb, front right -M7- , turn signal bulb, rear right -M8- , side turn signal bulb, right -M19-
16 - Output for brake and tail light bulb, left -M21- , brake and tail light bulb, right -M22- , bulb for high level brake light -M25- (54)
17 - LIN bus Multi-function steering wheel control unit -J453-
18 - Drive train CAN bus, low
19 - Drive train CAN bus, high
20 - Convenience CAN bus, high
21 - Convenience CAN bus, low
22 - Drive train CAN bus low (switched)
23 - Drive train CAN bus high (switched)
24 - LIN bus interior monitoring sensor -G273- , vehicle inclination sender -G384-
25 - not assigned
26 - not assigned
27 - Input of intermittent wiper switch -E22- (1st stage)
28 - not assigned
29 - not assigned
30 - Input of deactivation button of interior monitoring and vehicle inclination -E616-
31 - Input of heated rear window button -E230- (31)
32 - Input of windscreen wiper motor -V-
33 - not assigned
34 - Input of light switch -E1- (58L)
35 - not assigned
36 - LIN bus alarm horn -H12-
37 - LIN bus battery monitoring (for startstop system)
38 - Input (31)
39 - Input (30)
40 - not assigned
41 - not assigned
42 - not assigned
43 - not assigned (without startstop system)
  - Input of fog light and rear fog light switch -E23- (for startstop system)
44 - Input of CCS SET button -E227- (SET-)
45 - Input of CCS switch -E45- (onoff)
46 - Input of CCS SET button -E227- (RES+)
47 - Input of CCS switch -E45- (off)
48 - Input of reversing light switch -F4- (not valid for vehicles with automatic gearbox)
49 - Input of alternator with voltage regulator -CX1- terminal L (without startstop system)
50 - Input of ignition starter switch -D- (50)
51 - Input of ignition starter switch -D- (75) (without startstop system)
52 - Input of light switch -E1- (for headlight washer system)
53 - Input of intermittent wiper switch -E22- (2nd stage)
54 - CAN bus dash panel insert High (for startstop system)
55 - Input of dual clutch gearbox mechatronics -J743- , Control unit for automatic gearbox -J217- (without start-stop system)
56 - not assigned
57 - CAN bus dash panel insert Low (for startstop system)
58 - Input of exterior mirror heating button
59 - Input (30 analog)
60 - Input (31 analog)
61 - Input of rear wiper switch -E34-
  - Output for rear window wiper motor -V12-
62 - Input of intermittent wiper control -E38-
63 - Output for heated rear window -Z1-
64 - not assigned
65 - not assigned
66 - not assigned
67 - Input for heated rear window -Z1- (30)
68 - not assigned (without startstop system)
  - Input (30) (for startstop system)
69 - not assigned
70 - not assigned
71 - not assigned
72 - not assigned
73 - not assigned

Fitting location
At the front wall, left -arrow-.
 
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52-pin + 28-pin assignment
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A - Engine control unit -J623-
B - 28-pin connector, at wiring harness - T28e
C - 52-pin connector, at wiring harness - T52a

   
94-pin + 60-pin assignment
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A - Engine control unit -J623-
B - 94-pin connector, at wiring harness - T94a
C - 60-pin connector, at wiring harness - T60a

   
81-pin + 40-pin assignment
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A - Engine control unit -J623-
B - 81-pin connector, at wiring harness - T81a
C - 40-pin connector, at wiring harness - T40a

Fitting location (only for vehicles with left-hand drive)
In plenum chamber, left -arrow-.
 
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Fitting location (only for vehicles with right-hand drive)
In plenum chamber, right -arrow-.
 
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Pin assignment
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A - Windscreen wiper motor -V-
B - 4-pin connector, at wiring harness - T4a

Fitting location
At negative terminal of battery -arrow-.
Power steering control unit -J500-
electrohydraulic power-assisted steering
 
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Fitting location
In engine compartment on front left of longitudinal member -arrow-.
 
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Pin assignment
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A - Power steering control unit -J500-
B - 3-pin connector, at wiring harness - T3t
C - 2-pin connector, at wiring harness - T2j
D - 4-pin connector, at wiring harness - T4s

Fitting location (only for vehicles with left-hand drive)
below the left dash panel, -arrow-.
 
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Fitting location (only for vehicles with right-hand drive)
Below the right dash panel, -arrow-.
Radiator fan control unit -J293-
 
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Fitting location (not valid for engine identification characters CAXA)
In engine compartment, front left -arrow-.
 
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Fuse assignment (not valid for engine identification characters CAXA)
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A - Radiator fan control unit -J293-
B - 10-pin connector, at wiring harness - T10h

   
Fuse assignment (valid for engine identification characters CAXA)
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A - Radiator fan control unit -J293-
B - 4-pin connector, at wiring harness - T4ad

Fitting location
At the battery cover -1-.
Double clutch gearbox mechatronics -J743-
 
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Fitting location
On the double clutch gearbox -arrow-.
 
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Pin assignment
 
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A - Double clutch gearbox mechatronics -J743-
B - 25-pin connector, at wiring harness - T25a

Fitting location
On the pre-exhaust pipe -arrow-.
  Note
The fitting location of the lambda probe can differ depending on the engine type.
 
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Pin assignment
 
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A - 4-pin connector, at wiring harness - T4j

Fitting location
On the exhaust manifold -arrow-.
  Note
The fitting location of the lambda probe can differ depending on the engine type.
 
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Pin assignment
 
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A - 4-pin connector, at wiring harness - T4m
B - 6-pin connector, at wiring harness - T6f

Fitting location (only for vehicles with left-hand drive)
On bulkhead in engine compartment, right -arrow-.
 
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Fitting location (only for vehicles with right-hand drive)
On bulkhead in engine compartment, left -arrow-.
 
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Pin assignment - ABS ABS with EDL and TCS ESP
38-pin connector -T38a-
 
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1 - Terminal 30
2 - TCS and ESP button -E256-
3 - Rear right speed sensor -G44-
4 - Rear right speed sensor -G44-
5 - not assigned
6 - not assigned
7 - Tyre pressure monitor button -E226-
8 - Drive train CAN bus, low
9 - Drive train CAN bus, high
10 - Front right speed sensor -G45-
11 - Front right speed sensor -G45-
12 - not assigned
13 - Earth
14 - not assigned
15 - not assigned
16 - not assigned
17 - not assigned
18 - not assigned
19 - not assigned
20 - not assigned
21 - not assigned
22 - not assigned
23 - not assigned
24 - not assigned
25 - Terminal 30
26 - not assigned
27 - Terminal 30
28 - Terminal 15
29 - Rear left speed sensor -G46-
30 - Rear left speed sensor -G46-
31 - not assigned
32 - not assigned
33 - not assigned
34 - not assigned
35 - Front left speed sensor -G47-
36 - Front left speed sensor -G47-
37 - not assigned
38 - Earth

Fitting location (only for vehicles with left-hand drive)
Below the front centre console -arrow-.
 
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Fitting location (only for vehicles with right-hand drive)
Below the front centre console -arrow-.
 
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Pin assignment
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A - Airbag control unit -J234-
B - 50-pin connector, at wiring harness - T50a

Fitting location (only for vehicles with left-hand drive)
Below the dash panel, near centre console -arrow-.
 
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Fitting location (only for vehicles with right-hand drive)
Below the dash panel, near centre console -arrow-.
 
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Multimedia system control unit -J650-
Pin assignment
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A - Multimedia system control unit -J650-
B - 12-pin connector, at wiring harness - T12f

   
Fresh air and air recirculating flap control unit -J251-
Pin assignment
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A - Fresh air and air recirculating flap control unit -J251-
B - 16-pin connector, at wiring harness - T16e
C - 5-pin connector, at wiring harness - T5d
D - not assigned

   
Pin assignment Air conditioning system control unit -J301-
Pin assignment
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A - Air conditioning system control unit -J301-
B - 16-pin connector, at wiring harness - T16f
C - 5-pin connector, at wiring harness - T5d
D - 18-pin connector, at wiring harness - T18a

   
Climatronic control unit -J255-
Pin assignment
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A - Climatronic control unit -J255-
B - 20-pin connector, at wiring harness - T20a
C - 16-pin connector, at wiring harness - T16g

   


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Overview of the earth points in the engine compartment (only for vehicles with left-hand drive)
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1 -  Earth point 1 on front right of longitudinal member -685-
q   Fitting location
2 -  Earth strap, engine - body -3-
q   Fitting location
3 -  Earth point near ignition coil -19-
q   Fitting location
4 -  Earth point on right in engine compartment -13-
q   Fitting location
5 -  Earth point 2 on right A-pillar -751-
q   Fitting location
6 -  Earth point on right A-pillar -638-
q   Fitting location
7 -  Earth point in luggage compartment, right -51-
q   Fitting location
8 -  Earth point, in rear lid, right -53-
q   Fitting location
9 -  Earth point in luggage compartment, left -50-
q   Fitting location
10 -  Earth point 1 on the middle tunnel -687-
q   Fitting location
11 -  Earth point on left A-pillar -639-
q   Fitting location
12 -  Earth point on left in engine compartment -12-
q   Fitting location
13 -  Earth strap, battery - body -1-
q   Fitting location
14 -  Earth point 1 on front left of longitudinal member -671-
q   Fitting location

   
Overview of the earth points (only for vehicles with right-hand drive)
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1 -  Earth point 1 on front right of longitudinal member -685-
q   Fitting location
2 -  Earth strap, engine - body -3-
q   Fitting location
3 -  Earth point near ignition coil -19-
q   Fitting location
4 -  Earth point on right in engine compartment -13-
q   Fitting location
5 -  Earth point 2 on right A-pillar -751-
q   Fitting location
6 -  Earth point on right A-pillar -638-
q   Fitting location
7 -  Earth point in luggage compartment, right -51-
q   Fitting location
8 -  Earth point, in rear lid, right -53-
q   Fitting location
9 -  Earth point in luggage compartment, left -50-
q   Fitting location
10 -  Earth point 1 on the middle tunnel -687-
q   Fitting location
11 -  Earth point on left A-pillar -639-
q   Fitting location
12 -  Earth point on left in engine compartment -12-
q   Fitting location
13 -  Earth strap, battery - body -1-
q   Fitting location
14 -  Earth point 1 on front left of longitudinal member -671-
q   Fitting location

   
   685 Earth point 1 at front right longitudinal member -arrow A-
   3 Earth strap, engine - body -arrow B-
 
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   19 Earth point near ignition coil -arrow-
  Note
The fitting location of the earth point can differ depending on the engine type.
 
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   13 Earth point in engine compartment, right -arrow-
 
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   751 Earth point 2 on right A-pillar -arrow B-
   638 Earth point on right A-pillar -arrow A-
 
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   51 Earth point in luggage compartment, right -arrow-
 
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   53 Earth point, in rear lid, right -arrow-
 
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   50 Earth point in luggage compartment, left -arrow-
 
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   687 Earth point 1 on the middle tunnel -arrow-
 
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   639 Earth point on left A-pillar -arrow-
 
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   12 Earth point in engine compartment, left -arrow-
 
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Negative terminal of battery -arrow A-
   1 Earth strap, battery - body -arrow B-
 
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   671 Earth point 1 on front left of longitudinal member -arrow-
 
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