motor RENAULT MEGANE SCENIC 1995 Service Repair Manual

Page
COOLING
Specifications
Filling - bleeding
Checking
Radiator
Diagram
Exhaust
General
Catalytic converter
Exhaust pipe assembly
Fuel tank
Fuel tank
Filler neck
Gauge
Pump and sender unit
Engine suspension
Suspended engine mountings
Engine mounting pads19-1
19-2
19-3
19-4
19-6
19-12
19-15
19-16
19-19
19-23
19-25
19-26
19-29
19-32 COOLING - EXHAUST- FUEL TANK -
ENGINE SUSPENSION
1916-1
16-9 STARTING - CHARGING
Alternator
Starter motor
16
IGNITION - INJECTION
IGNITION
Power module
Static ignition
Spark plugs
Injection
General
Location of components
Special notes on semi-sequential
injection
Special notes on sequential injection
Injection fault warning light
Engine immobiliser function
Computer configuration as a
function of the gearbox type
17
14-1
14-9
14-13
14-19
14-21
14-22 ANTIPOLLUTION
Fuel vapour recirculation
Oil vapour rebreathing
Exhaust gas recirculation (EGR)
Catalytic converter
Catalytic converter - oxygen sensor
Test for the presence of lead
14
17-28
17-29
17-32
17-33
17-34
17-36
17-39 IGNITION - INJECTION
(continued)
Injection strategy / automatic
transmission
Injection strategy / air conditioning
Idle speed correction
Idle speed adaptive correction
Richness regulation
Adaptive richness correction
Operating wiring diagram
17
Page
17-1
17-2
17-5
17-6
17-12
17-17
17-19
17-24
17-25
17-26
Contents

ENGINE AND PERIPHERALS
Engine - Gearbox
10
K7M engine
Remove:
- the relay plate and the engine connection unit
connector,
98756R
- the pipe from the canister solenoid valve,
- the injection computer and secure it to the
engine,
- the starter motor feed wire from the battery.
Disconnect the injection feed wire located in the
scuttle panel.
98754R
Remove:
- the accessories belt,
- the power assisted steering pump pulley.
Move the power assisted steering pump and the
the air conditioning compressor away (without
opening the circuits).
Secure the low pressure pipe for the compressor
to the air filter mounting.
Position the load positioning tool.
Lift the engine to remove the three bolts, the
engine tie-bar mounting and the gearbox
mounting.
Remove the engine.
REFITTING
Refitting is the reverse of removal.
Fill the gearbox and the cooling circuit and bleed
the circuit (see section 19).
Fit the brake caliper bolts with Loctite
FRENBLOC and tighten to the correct
torque.
Press the brake pedal several times to bring the
pistons back into contact with the pads.
NOTE: ensure the heat shields are correctly
positioned.
10-9

ENGINE AND PERIPHERALS
Engine - Gearbox
10
F (E) engine
- the relay plate and the engine connection unit
connector,
98756R
- the earth strap,
- the suspended engine mounting cover cap.
Disconnect:
- the injection computer and unclip it from the
computer mounting,
- the injection feed wire located in the scuttle
panel,
- the starter motor feed.
98754R
Remove the fuel supply and return pipes.
Remove the absolute pressure sensor.
Disconnect:
- the air conditioning and power assisted
steering pressostats,
- the compressor and fan unit supply,
- the temperature switch sensor and the oxygen
sensor,
- the canister bleed pipe.
Remove:
- the expansion bottle,
- the injection computer mounting,
- the accessories belt (see section 11),
- the power assisted steering pulley.
Remove the three bolts (1) from the power
assisted steering pump and the four bolts (2) from
the air conditioning compressor.
99502-3R
10-12

ENGINE AND PERIPHERALS
Engine - Gearbox
10
F8Q engine
Remove:
- the diesel return union on the injection pump,
- the earth strap,
- the tie-rod between the shock absorber
turrets,
- the battery mounting bracket.
Disconnect the feed wire from the preheating
unit in the scuttle panel as well as the starter
motor feed.
98754R
Left hand side of the vehicle
Remove:
- track rod end using tool T.Av. 476,
- the three bolts for the driveshaft gaiter,
- the two bolts from the shock absorber base,
- the two bolts from the brake caliper then
secure it to the shock absorber spring,
- the bolt from the lower ball joint,
- the complete hub assembly and the
driveshaft.Right hand side of the vehicle
Remove:
- the pins from the driveshaft using tool
B.Vi.
31-01,
- the upper bolt from the shock absorber base
and slacken the lower bolt.
Tilt the stub axle carrier and release the
driveshaft.
Remove:
- the exhaust pipe,
- the gear control on the gearbox side,
- the power assisted steering pipe mountings
from the gearbox,
98749R
10-16

ENGINES AND PERIPHERALS
Engine and transmission assembly
10
E7J Engine
Remove the battery mounting bracket.
Disconnect the injection feed wire in the scuttle
panel as well as the starter motor feed.
98754R
Remove:
- the computer strap and secure it to the
engine,
- the wheels,
- the right hand and left hand mudguards,
98710R
- the brake calipers and secure them to the
body,
- catalytic converter,
- the two exhaust heat shields,
99612R
- the gear control on the gearbox side, turn it
over and secure to the exhaust pipe,
- the horn,
- the sub-frame-body tie rods,
- the front bumper.
PRJ1002
10-21

FUEL MIXTURE
Specifications
12
DESCRIPTION MAKE/TYPE SPECIAL NOTES
ComputerSIEMENS FENIX 335 tracks
Injection Regulated monopoint injection
Ignition Advance laws integral in injection computer
Ignition power module
Pinking sensor
Plugs
EYQUEM FC 52 LS
NGK BCP 5 ESGap: 0.9 mm
Tightening torque: 2.5 to 3 daN.m
Fuel filter Mounted in front of the fuel tank under the vehicle
Fuel pump
WALBROSubmerged in fuel tank
Flow: 50 litres/hour minimum
Pressure: 1.06 bar
Pressure regulator Pressure 1.06 bar (non-adjustable)
Solenoid injector Voltage: 12 V
Resistance : ≈ 2 Ω
Throttle body BOSCH Diameter 36 mm
Idle speed regulation
micromotorNon-adjustable
Integral no load switch
Fuel vapour recirculation
canister
Solenoid valve
CAN 10Voltage: 12 V
Resistance : ≈ 34.5 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 Throttle potentiometer
Idle speed regulation: 15≤#17≤30
Full load: 192≤#17≤210
Adaptive richness
operation: 112≤#30≤160
Adaptive richness
idle speed: 104≤#31≤160
12-2

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
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
INJECTOR
REMOVAL
Remove the air filter.
Remove the air temperature cover (see previous
page).
Remove the injector (6) from its housing.
94539R
REFITTING
Replace the O rings and lubricate them.
Fit the injector and cover so that they are correctly
aligned and mount the assembly.
REMOVING - REFITTING THE FUEL PRESSURE
REGULATOR
The fuel pressure regulator cannot be adjusted if
it is faulty. The upper section of the throttle body
must be renewed.
IDLE SPEED REGULATION MOTOR
REMOVAL
Remove the air filter.
The motor may be removed without having to
remove the throttle body. Access to the bolts is
made easier however by removing the mounting
bolts for the throttle body and releasing it
without disconnecting the fuel pipes.
Disconnect the motor connector.
Remove the mounting bolts and remove the
motor.
REFITTING
No adjustment may be made. However, ignition
on, if the low load switch bargraph on the XR25 is
not illuminated, fit a shim between the throttle
stop and the micromotor to obtain the no load
switch position.
Turn the ignition on then off; the micromotor
should position itself in the cold start position.
Repeat the operation without the shim, then
check the position of the throttle, ignition on,
engine not running, using the XR25 and #17.
94540S
12-9

FUEL MIXTURE
Throttle body
12
E7J engine
THROTTLE POTENTIOMETER
The throttle potentiometer is set in the factory
and cannot be repaired.
If there is a fault, renew the throttle body section.
REMOVAL
Remove the air filter and the complete
monopoint throttle body assembly (see previous
pages).
Remove the upper section of the throttle body
and the idle speed regulation motor.
94538S
REFITTING
Renew the seals.
Refit the throttle body peripherals.
Check:
- the connectors are correctly connected,
- on the
XR25 :
•the bargraphs are present for :
- low load,
- full load.
•the throttle position using the XR25 and
#17.
Refit the air filter.
12-10