1995 RENAULT MEGANE SCENIC sensor

FUEL MIXTURE
Specifications
12
DESCRIPTION MAKE/TYPE SPECIAL NOTES
ComputerSIEMENS FENIX 555 tracks
Injection Semi-sequential regulated multipoint injection
Ignition Static with two dual output coils
Power module integral in computer
One pinking sensor
Plugs
EYQUEM FC 52 LS
CHAMPION C10YCGap: 0.9 mm
Tightening torque: 2.5 to 3 daN.m
Air filter Replace every other oil change
Fuel filter Mounted in front of the fuel tank under the vehicle
Replace at major service
Fuel pump
WALBROSubmerged in fuel tank
Flow: 80 litres/hour minimum for regulated
pressure of 3 bars and voltage of 12 V
Pressure regulator Regulated pressure
Zero vacuum: 3 ± 0.2 bars
Vacuum of 500 mbar : 2.5 ± 0.2 bars
Solenoid injector
SIEMENSVoltage: 12 V
Resistance : 14.5 ± 1 Ω
Throttle body
PIERBURG
714 186Diameter 44 mm
Idle speed regulation stepping
motor
EGR (K7M 703) solenoid valve
PIERBURG
72213000Voltage: 12 V
Resistance : 30 ± 3 Ω
Fuel vapour recirculation
canister
Solenoid valve
CAN 10
DELCO REMY
Voltage: 12 V
Resistance : 35 ± 5 Ω
Heated oxygen sensor NGK Voltage at 850°C
Rich mixture: > 625 mvolt
Lean mixture: 0 to 80 mvolt
Tightening torque: 4.5 daN.m
Fault finding
FICHE n° 27
CODE D13
SELECTOR ON S8
Throttle potentiometer
Idle speed regulation: 5 ≤ #17 ≤ 47
Full load: 164 ≤ #17 ≤ 253
R.C.O. idle speed: 4 % ≤ #12 ≤ 14 % (K7M 720)
6 % ≤ #12 ≤ 15 % (K7M 702/703 in P and N)
10 % ≤ #12 ≤ 20 % (K7M 703 in D)
Adaptive R.C.O
idle speed: - 2.4 % ≤ #21 ≤ + 6.2%
Adaptive richness
operation: 0 ≤ #30 ≤ 208
Adaptive richness
idle speed: 100 ≤ #31 ≤ 255 (K7M 720)
104 ≤ #31 ≤ 255 (K7M 702/703)
12-4

FUEL MIXTURE
Specifications
12
Vehicle GearboxEngine
Type SuffixBore
(mm)Stroke
(mm)Capacity
(cm
3)RatioCatalytic
converterDepollution
standard
BA0G Manual F3R 750 82.7 93 1998 9.8/1 C47 EU 96
* For a coolant temperature greater than 80°C and at stable engine speed of 2 500 rpm for
approximately 30 seconds.
** For legislative values, refer to specification for individual country.
*** Compatible with OR 91 unleaded.
Temperature in °C (± 1°) 0 20 40 80 90
Air temperature sensor
Type CTN
Resistance in Ohms7 470
to 11 9703 060
to 4 0451 315
to 1 600--
Coolant temperature sensor
Type CTN
Resistance in Ohms-3 060
to 4 0451 315
to 1 600300 to 370 210 to 270
Engine
Type SuffixTests carried out at idle speed*
Engine
speed
(rpm.)Emission of pollutants **
CO (%) CO
2 (%) HC (ppm) Lambda (λ)Fuel ***
(minimum octane
rating)
F3R 750 770±500.3
maximum14.5
minimum100
maximum0.97<λ<1.03 Unleaded (OR 95)
Engine
Type SuffixComputer Supplier’s No.Homologation
No. RENAULT No.
(G70*)
F3R 750 SIEMENS 55 tracks (FENIX 5) S 103 717 101 B 77 00 868 299 77 00 874 462
12-5

FUEL MIXTURE
Specifications
12
DESCRIPTION MAKE/TYPE SPECIAL NOTES
ComputerSIEMENS FENIX 555 tracks
Injection Sequential regulated multipoint injection
Ignition Static with two dual output coils
Power module integral in computer
One pinking sensor
Plugs
EYQUEM C 52 LS
CHAMPION N7YCX
BOSCH W7DCOGap: 0.9 mm
Tightening torque: 2.5 to 3 daN.m
Air filter Replace every other oil change
Fuel filter Mounted in front of the fuel tank under the vehicle
Replace at major service
Fuel pump
WALBROSubmerged in fuel tank
Flow: 80 litres/hour minimum for regulated
pressure of 3 bars and voltage of 12 V
Pressure regulator WEBER
BOSCHRegulated pressure
Zero vacuum: 3 ± 0.2 bars
Vacuum of 500 mbar : 2.5 ± 0.2 bars
Solenoid injector
SIEMENSVoltage: 12 V
Resistance: 14.5 ± 1 Ω
Throttle body SOLEX
Diameter 60 mmReference: 127 F3R 751 without AC - F3R 750
Reference: 132 F3R 751 AC
Idle speed regulation solenoid
HITACHI
AESP 207-17Voltage: 12 V
Resistance: 9.5 ± 1 Ω
Fuel vapour recirculation
canister
Solenoid valve
CAN 10
DELCO REMY
Voltage: 12 V
Resistance: 35 ± 5 Ω
Heated oxygen sensor
BOSCH LSH 25Voltage at 850°C
Rich mixture: > 625 mvolt
Lean mixture: 0 to 80 mvolt
Tightening torque: 4.5 daN.m
Fault finding
FICHE n° 27
CODE D13
SELECTOR ON S8
Throttle potentiometer
Idle speed regulation: 8 ≤ #17 ≤ 38
Full load: 188 ≤ #17 ≤ 245
R.C.O. idle speed: 20 % ≤ #12 ≤ 40 % (F3R 750)
18 % ≤ #12 ≤ 38 % (F3R 751)
Adaptive R.C.O
idle speed: - 6.2 % or - 8.6 ≤ #21 ≤ + 6.2 %
Adaptive richness
operation: 82 ≤ #30 ≤ 224
Adaptive richness idle speed: 32 ≤ #31 ≤ 224
12-6

FUEL MIXTURE
Throttle body
12
E7J engine
PRESENTATION
94542R
1Air temperature sensor
2Fuel pressure regulator
3Fuel return to fuel tank
4Fuel supply
5Throttle opening motor
6Monopoint injector
Connector (A)
Injector and air temperature sensor operations
1 and 4Air temperature sensor
2+monopoint injector
3 - monopoint injector
Connector (B)
Idle speed regulation and low load switch
operations
1 + or -Motor feed
2 - or +Motor feed
3 and 4Low load switchConnector (C)
Throttle potentiometer operation
1Earth
2+ 5 V feed
4Throttle position information (voltage
changes between 0 and 5 V)
5Not used
The throttle body has two sections:
• The upper section is known as the injection
section (D).
• The lower section is known as the throttle
section (E).
NOTE : when the unit is removed, the two sections
are joined together by plastic clips. Squeeze the
end of the clips to separate the two sections.
94543-2R3
12-7

FUEL MIXTURE
Throttle body
12
E7J engine
REMOVAL
Remove the air filter.
Disconnect:
- connectors (A) (B) and (C),
- the fuel supply pipes (1) and return pipes (2),
- the accelerator control cable (3).
Remove the mounting bolts (4) and remove the
throttle body.
94544R
REFITTING
Replace the seals between the manifold and the
throttle body.
Reconnect:
- the fuel supply and return pipes, ensuring the
connectors are correctly clipped back together,
- the accelerator control and refit the air filter.
AIR TEMPERATURE SENSOR
REMOVAL
Remove the air filter.
Disconnect the connector.
Remove bolt (1) and lift cover (2).
Release the wires from mounting (3).
Remove the connector (4) after releasing hooks
(5).
94541R
REFITTING
Check the connectors are correctly clipped in.
12-8

FUEL MIXTURE
Throttle body
12
K7M engine
Throttle body mounting bolt
on inlet manifold 2
TIGHTENING TORQUES (in daN.m)
REMOVAL
Remove the acoustic tie bar.
Disconnect:
- the air temperature sensor (1),
- the oil vapour rebreathing pipe (2) on the
rocker box cover.
Slacken the clips (3) mounting the air sleeve (4) to
the air filter and the throttle body, then remove
the sleeve.
99359R
Disconnect :
- the accelerator cable (5),
- the throttle position potentiometer connector
(6),
- the idle speed regulation stepping motor
connector (7).
99357R
Remove the four bolts mounting the throttle
body and remove the throttle body.
99358-1R
12-11

99239R
FUEL MIXTURE
Throttle body
12
Disconnect :
- the accelerator cable (4),
- the oil vapour rebreathing pipe (5),
- the two water hoses (6) which heat the
throttle body after clamping them using tool
Mot. 453-01.
Remove the four mounting bolts for the throttle
body and remove it.
Remove the heat shield between the throttle
body and the manifold. Throttle body mounting bolt
on inlet manifold 2
Throttle potentiometer mounting bolt 0.2
TIGHTENING TORQUES (in daN.m)
REMOVAL
Disconnect the battery.
Remove the three bolts mounting the unit to the
air filter.
99213R
Disconnect:
- the air temperature sensor (1),
- the throttle position potentiometer (8).
Slacken the clip mounting the air sleeve (2) to the
throttle body.
99238R
F3R engine
Remove the air filter and the air sleeve.
12-13

FUEL MIXTURE
Inlet manifold
12
E7J engine
Manifold nuts 2.5
TIGHTENING TORQUES (in daN.m)
REMOVAL
To remove the manifold, the throttle body must
be removed (see previous pages).
There are no special notes for removal.
The inlet manifold is fitted with an electrical
heater (2) with a PTC type resistance (positive
temperature coefficient).
This is mounted in the inlet manifold, opposite
the throttle, and is secured by a circlip.
The heater is fed via a relay by the computer up to
a coolant temperature of 68°C.
If the coolant temperature sensor is faulty, the
heater is permanently fed.
PRM1202
1Retaining circlip.
2 Electrical heater.
3Seal.
REFITTING
When refitting, replace the manifold gasket and
bleed the cooling circuit.
12-15