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RENAULT LAGUNA wiring diagrams
Key to circuits
RENAULT LAGUNA wiring diagrams
Diagram 1
Key to symbols
Earth locations
Key to circuits
Bulb
E1
Below RH rear light cluster
E2
Below LH rear light cluster
E3
Below LH rear light cluster
E4
RH driver’s inner sill
E5
LH passenger’s front inner sill
E6
LH passenger’s rear inner sill
E7
RH side engine (petrol)
LH side engine (Diesel)
E8
Front of engine compartment’
below LH headlight
Diagram 1 Information for wiring diagrams
Diagram 2 Starting, charging, Diesel fuel shut-off,
engine cooling fan,
Diagram 3 Diesel fuel heater, pre and post heating
Diagram 4 Turbo Diesel pre and post heating, ABS
Diagram 5 Automatic transmission, air bag/pretensioners,
variable power steering
Diagram 6 Fuel injection Bosch monopoint
Diagram 7 Fuel injection (Bendix Siemens MPi)
Diagram 8 Instrument cluster
Diagram 9 Instrument cluster
Diagram 10 Speed sensor, clock/external temperature gauge,
heater blower
Diagram 11 Heated front/rear screen, heated washer jets,
windscreen wash/wipe
Diagram 12 Rear wash/wipe, headlight washer, sidelights
and headlights
Diagram 13 Stop, reversing,fog and direction indicator lights
Diagram 14 Headlight levelling, interior lighting
Diagram 15 Rheostat interior lighting, audio system,
central locking
Diagram 16 Electric mirrors and windows
Switch
Multiple contact
switch (ganged)
Fuse/ fusible
link and rating
F24 30A
Terminal identification
15
Ignition switch 'ignition' position
15
Ignition switch 'ignition' position
30
Battery +ve
31
Earth
50
Ignition switch 'start' position
85
Relay winding input
86
Relay winding earth
87
Relay output
87a
Relay output
D+
Charge warning light
Resistor
Variable resistor
Item no.
15
Pump/motor
M
Typical passenger compartment fuse box
Earth and location
(via lead)
Fuse Rating Circuit protected
F1
20A
Cooling fan
E1
F2
25A
Horn
F3
15A
RH main beam
F4
15A
LH main beam
Gauge/meter
F5
10A
Reversing light (automatic transmission)
F6
10A
Clock/radio and memory units, electric mirrors, alarm
F7
25A
Front wiper park position
Diode
F8
15A
Direction indicators and hazard warning light
F9
25A
Windscreen wiper
Light emitting diode
(LED)
F10
15A
Instrument panel, air bag, pretensioners, alarm, memory seats
F11
25A
Central locking
F12
30A
+ve supply after ignition switch
F13
5A
Variable power steering
Internal connection
(connecting wires)
F14
5A
ABS
F15
5A
Automatic transmission
F16
15A
RH dipped beam headlight
F17
15A
LH dipped beam headlight, headlight levelling
F18
15A
Stop lights, cruise control, flasher unit, bulb failure unit
Wire splice or connector
F19
20A
Heated seats
F20
20A
Rear screen wiper, heated front/rear screen, reversing lights, lights on buzzer,
heater controls
Solenoid actuator
F23
15A
Variable shock absorbers
F24
10A
Clock, display illunination, alarm, memory seats
F25
10A
Rear fog light
Connections to other
circuits. Direction of
arrow denotes current
flow.
F26
20A
Radio, heater controls, cigar lighter
Diagram 3, Arrow A
F27
25A
Memory seats
A
High beam
warning light
F28
25A
Front fog lights
F29
15A
Boot and interior lights
F30
5A
Injection
F31
10A
Heated mirrors
F32
30A
Sunroof
Wire colour
(Red wire/white tracer )
F33
5A
Radio telephone
R/W
F34
10A
LH side light, lights, bulb failure unit
F35
40A
Heated rear screen
F37
40A
Air conditioning
F38
40A
Driver’s electric window
Screened cable
F39
40A
Passenger’s electric window
F40
40A
Power passenger seat
Denotes alternative wiring
variation (brackets)
{
Typical engine compartment fuse box
Fuse Rating Circuit protected
F51
60A
Accessory cut-off shunt
Box shape denotes part
of a larger component
F52
60A
+ battery passenger compartment
F53
60A
+ ignition switch
F54
60A
After ignition relay
F55
40A
RH cooling fan
30 Terminal identification
(i.e. battery +ve)
A10 Connector pin number
30 A10
F56
40A
LH cooling fan
F57
30A
ABS
F58
40A
Headlight washers
F60
30/70A
Fuel injection (30A), Diesel pre-heating (70A)
F65
70A
Heated windscreen relay
H31764
 Wire colours
JA
Yellow
MA
Brown
NO
Black
OR
Orange
RG
Red
VI
Mauve
Key to items
Diagram 2
BA
White
BE
Blue
BJ
Beige
CY
Clear
GR
Grey
SA
Pink
VE
Green
1 Battery
2 Ignition switch
3 Engine compartment fuse box
4 Passenger compartment fuse box
5 Starter motor
6 Alternator
7 Starter relay
8 Diesel fuel shut-off valve
9 Cooling fan switch (single temperature)
10 Cooling fan switch (dual temperature)
11 Cooling fan motor
12 Cooling fan relay
13 Cooling fan 1st speed relay
14 Cooling fan 2nd speed relay
15 Cooling fan resistor
H31765
2
2
2
2
Diagram 8/9, Arrow C
7
Tachometer
(Diesel only)
B1 B2 A2
A1
B1 B2 A2
A1
B1 B2 A2
A1
B1 B2 A2
A1
4
3
C
BA
1
F53
60A
RG
2
3
5
F53
60A
3
F53
60A
3
F12
30A
4
F53
60A
3
F12
30A
4
Diagram 8/9, Arrow B
1
A
Alternator
warning light
1
Diagram 5, Arrow A
Automatic
transmission
1
B
1
5
MA
8
5
21
6
Typical starting system
(manual transmission)
Typical starting system
(automatic transmission)
Typical charging system
Typical Diesel fuel shut-off
Typical single speed cooling fan
(manual transmission)
Typical single speed cooling fan
(automatic transmission)
Typical twin speed cooling fan
2
JA
2
JA
2
2
B1 B2 A2
A1
B1 B2 A2
A1
1
10
9
4
1
B1 B2 A2
A1
4
2
F1
20A
4
F1
20A
13
30
12
RG/MA
86
RG
RG/MA
4
85
3
F53
60A
F1
20A
3
F53
60A
F55
40A
F53
60A
F56
40A
F55
40A
87
4
3
1
3
2
RG/MA
5
15
2
1
2
2
30
1
11
1
11
86
1
1
1
85
11
1
JA/MA
87
9
14
2
NO
  Wire colours
JA
Yellow
MA
Brown
NO
Black
OR
Orange
RG
Red
VI
Mauve
Key to items
Diagram 3
BA
White
BE
Blue
BJ
Beige
CY
Clear
GR
Grey
SA
Pink
VE
Green
1 Battery
2 Ignition switch
3 Engine compartment fuse box
4 Passenger compartment fuse box
17 Fuel filter heater
18 Fuel heater temperature switch
19 Preheater unit
20 Glow plugs
21 Pump unit
a = advance/retard valve
b = EGR switch
c = throttle position switch
d = pump advance solenoid
22 Altitude relay
23 Altitude capsule
24 Coolant temperature sensor
25 Fast idle solenoid valve
26 Clutch pedal switch
27 EGR timer relay
28 EGR temperature switch
29 EGR valve
H31766
JA
JA/RG
JA/VI
2
2
Diagram 8, Arrow D
4
22
Preheater
warning light
F12
30A
JA/VE
3
4
23
B1 B2 A2
A1
JA
B1 B2 A2
A1
1
D
B1
2
4
F12
30A
JA
5
BA
MA/VI
C1
RG
B2
SA
1
B3
BJ
18
F53
60A
19
B1
JA/VI
3
3
2
A1
BJ/RG
a
A2
BA
F53
60A
F60
70A
C1
VE
BJ
A2
BA
d
1
A1
VI
2
C3
VE
B
NO
B1
C2
B2
C1
17
C2
BA
c
A3
1
A
b
1
NO
BA
BA
21
1
2
2
1
NO
1
2
3
4
E7
E7
24
25
Typical pre/post heating
(Diesel without EGR)
Typical Diesel fuel filter heater
20
JA/VI
2
JA
JA/RG
BA/VE
BA/VE
SA
5
2
Diagram 8, Arrow D
4
F12
30A
Preheater
warning light
JA/VE
3
1
4
23
2
B1 B2 A2
A1
1
D
28
B1
4
2
1
JA
5
27
BA
MA/VI
C1
22
RG
B2
SA
B3
BJ
3
19
B1
JA/VI
MA/VE
A1
BJ/RG
F53
60A
F60
70A
C1
VE
21
MA/VE
1
2
3
1
a
A2
26
A2
BA
2
BJ
C3
GR
1
d
NO
A1
29
VE
C2
B1
B2
C2
C1
A3
c
1
BA
b
BA
BA
NO
1
2
2
1
E4
NO
NO
1
2
3
4
24
25
E7
Typical pre/post heating
(Diesel with EGR)
20
 Wire colours
JA
Yellow
MA
Brown
NO
Black
OR
Orange
RG
Red
VI
Mauve
Key to items
Diagram 4
BA
White
BE
Blue
BJ
Beige
CY
Clear
GR
Grey
SA
Pink
VE
Green
1 Battery
2 Ignition switch
3 Engine compartment fuse box
4 Passenger compartment fuse box
19 Preheater unit
20 Glow plugs
21 Pump unit
a = advance/retard valve
d = pump advance solenoid
24 Coolant temperature switch
25 Fast idle solenoid valve
27 EGR relay
29 EGR valve
32 Throttle potentiometer
33 Speed threshold sensor
34 Diagnostic socket
35 Air temperature sensor
36 ABS auxiliary relay
37 ABS connection plate
a = ABS main relay
b = ABS pump relay
38 ABS hydraulic unit
39 ABS soleniod valve unit
40 Pedal travel sensor
41 Wheel sensor
42 ABS ECU
43 Stop light switch
H31767
2
4
JA
3
RG
RG
1
JA/GR
27
F12
30A
BA/MA
B1 B2 A2
A1
4
33
2
NO
5
JA
32
AB
NO
A2
BA
BA
A4
VI
VE
1
32
E7
RG
A3
Diagram 8, Arrow D
D
RG/VE
BJ/RG
Preheater
warning light
B4
NO
C3
BA
1
3
2
A1
VI
1
2
NO
C1
BJ
BJ
25
29
F53
60A
F60
70A
OR
B1
MA
MA
2
1
A4
BA
BA
VE
BA/VE
C3
VE
VE
A2
BA
BA
BA
OR
BA
BA
B3
OR
OR
OR/MA
OR/MA
OR/MA
B2
BJ
BJ
BJ
2
1
1
19
A1
C2
BA/RG
VE
1
2
3
4
VI
BA
1
2
C4
B2
GR
GR
35
VE
10
11
20
C1
BJ
A3
NO
21
24
34
d
a
Adaptive damping
Typical pre/post heating
(Turbo Diesel)
2
1
3
VI
22
7
39
38
4
Diagram 8/9, Arrow E
10
13
12
11
2
JA/BE
33
E
ABS
warning light
F14
5A
F18
15A
1
2
B1 B2 A2
A1
43
41
NO
BA
30
15
14
4
5
6
3
36
1
2
VI
MA
8
7
1
2
13
14
24 31
JA
4
41
NO
BA
1
JA/BE
6
3
NO
NO
RG
1
1
2
BJ
41
28
NO
BA
VI
2
19
8
7
3
VI
MA
BJ/MA
BJ/VE
b
5
1
2
15
9
10
6
11
12
3
4
5
41
NO
BA
29
VI
F53
60A
F57
30A
F57
30A
31
37
13
GR
GR
GR
GR
10
VE
BA
5
34
16
MA
MA/BA
3
11
BA
SA
27
42
BJ
1
BA
VI
36
32
OR
OR
a
40
24
2
NO
10
11
NO
1
NO
NO
37
BJ/MA
BJ/VE
BJ
JA
JA
RG/VE
RG/VE
Typical
anti-lock brakes
RG
RG
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