1995 RENAULT MEGANE SCENIC stop start

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 SUPPLY
Fuel cut-out on impact
13
AIM
The aim of this function is to avoid a fire after an
accident due to a fuel leak. To accomplish this, all
components which pump fuel from the fuel tank
are stopped during and after the impact. They
may only be started again by a mechanical action
performed by the driver or repair mechanic.
DESCRIPTION
The system comprises an inertia switch which may
be reset, which:
- detects the impact (1),
- cuts the electrical circuit.
99511R
It is mounted:
• For petrol engines, between track 1 of the
pump relay (236) and the + feed.• For diesel engines, between the + feed and
the fuel shut off (or the coded solenoid valve
if the vehicle is fitted with an engine
immobiliser).
OPERATION
During the impact, the inertia switch ball leaves its
seat and breaks the electrical current.
For petrol engines, the + feed to the pump relay
control circuit (236) is cut. The pump and the
injectors are thus no longer fed electrically.
The fuel in the fuel tank is therefore isolated.
For diesel engines, the + feed to the fuel shut off
or the coded solenoid valve is cut.
The pump can no longer take up fuel, there is no
high pressure any more. Any risk of fire due to
high pressure diesel spray over the engine is
removed.
RESETTING THE SWITCH AND SWITCH
OPERATION
To reset the inertia switch, press the top to
reposition the ball in its seat.
IMPORTANT:
• for petrol engines, after resetting the switch,
the computer memory
MUST be erased using
the XR25. The injection computer will
memorise a pump relay fault when the system
is triggered.
• for diesel engines, after resetting the switch,
the passenger compartment connection unit
memory
MUST be erased using the XR25. This
unit will memorise a break in feed to the
coded solenoid valve.
13-1

STARTING - CHARGING
Alternator
16
REMOVAL
Disconnect:
- the battery,
- the alternator electrical connections.
Remove the mounting bolt for the diesel fuel pipe
retaining bracket and move it to one side.
98837R
Slacken bolt (A) then bolt (B), to just past the
shoulder, while holding the automatic tensioner
plate with a 9 mm wrench (Eg. : FACOM J 151 rat-
chet), then slacken the belt by moving the ratchet
in the direction of the arrow. F 8 Q engine
with AC
98837-1R
Remove:
- the lower timing cover,
- the belt,
- the alternator mounting bolts,
- the alternator.
REFITTING(Special note)
Refitting is the reverse of removal.
The belt is tensioned by moving the automatic
tensioner plate against the stop at bolt (B), wi-
thout forcing it, using a 9 mm wrench (Eg. :
FACOM J 151 ratchet ).
98837-1R1
NOTE : do not refit a belt once it has been remo-
ved.
16-6

INJECTION
Idle speed adaptive correction
17
PRINCIPLE ( K7M and F3R engines)
The E7J engine has no idle speed adaptive correction and no #12 function.
Under normal warm engine operating conditions, the RCO idle speed value using #12 varies between an up-
per and a lower value to obtain the nominal idle speed.
If the engine operating conditions are different (running in, engine contaminated...) the RCO idle speed va-
lue may be situated close to the upper or lower value.
Adaptive correction (#21) for the RCO idle speed (#12) allows compensation to be made for slow variations
in the engine’s air requirements, in order to recentre the RCO value (#12) to a nominal average value.
This correction is only operational if the coolant temperature is greater than 80°C, 20 seconds after starting
the engine and if the engine is in the nominal idle speed regulation phase.
RCO IDLE SPEED VALUES AND ADAPTIVE CORRECTION
Engine
F3R 750Engine
F3R 751Engine
K7M 702Engine
K7M 703Engine
K7M 720
Nominal idle
speed (#06)X = 770 rpm. X = 770 rpm. X = 720 rpm.X = 750 rpm.
in P and NX = 720 rpm.
R.C.O. idle speed
(#12)20 %≤X≤40 % 18 %≤X≤38 % 6 %≤X≤15 %10 %≤X≤20 %
in D
6 %≤X≤15 %
in P and N4 %≤X≤14 %
Adaptive idle
speed
(#21)Threshold:
- min : - 8.6 %
- max : +6.2 %Threshold:
- min : - 8.6 %
- max : +6.2 %Threshold:
- min : - 2.4 %
- max : +6.2 %Threshold:
- min : - 2.4 %
- max : +6.2 %Threshold:
- min : - 2.4 %
- max : +6.2 %
INTERPRETATION OF THE GATE VALUES
If there is an excess of air (air leak, throttle stop incorrectly set...) the idle speed increases, the RCO idle speed
value for #12 decreases to return to the nominal idle speed; the RCO idle speed adaptive correction value for
#21 reduces to recentre the RCO idle speed for #12.
If there is a lack of air (pollution, etc.), the strategy is reversed:
The RCO idle speed for #12 increases and adaptive correction for #21 also increases, in order to recentre #12
to a nominal average value.
IMPORTANT : after erasing the computer memory (disconnecting the battery), the engine must be allowed to
run at idle speed before returning the vehicle to the customer so that the adaptive correction may correctly
reset itself. Minimum threshold for the F3R engine 750 (- 8.6 %) : this value is taken from the definitive setting. The first
versions to be marketed have a threshold of - 6.2 %.
17-33

AUTOMATIC TRANSMISSION
Oil change frequencies
23
The mechanism is drained during the major service.
The oil level must be checked every 10000 miles (15 000 km) in case there is a slight oil leak.
The final drive is never drained ; it is filled for life.
The strainer is no longer replaced (NT 2261A).
Only the level may change due to a slight leak.
Oil capacity
NOTE :if the automatic transmission is replaced, only check the oil level since the transmission is supplied by
the Parts Department full of oil.
TOTAL volume
MECHANISM
5.7 l
FINAL DRIVE1 l
Fault warning light
MESSAGE FROM THE ELECTRONIC FAULT
WARNING LIGHT
Normal operation :
• The warning light is not illuminated during
normal operation whether the vehicle is being
started, engine running or when the vehicle is
stationary.
Presence of a fault :
• Vehicle stopped, engine running, or when
driving, warning light permanently illuminated
• Vehicle moving, warning light illuminates and
extinguishes without action at the ignition key.
• Vehicle moving, warning light illuminates
briefly.Oil temperature < - 20 °C or > + 140 °C
• Vehicle moving or stationary, warning light
flashes at a rate of approximately 1 flash per
second, in this case, reduce the performance
requirement by moderating acceleration.
23-6

AUTOMATIC TRANSMISSION
Wiring diagram
23
104 - Ignition switch
119 - Automatic transmission computer
120 - Injection computer
129 - ECO/PERF selector switch
160 - Stop switch
163 - Starter motor
225 - Diagnostic socket
247 - Double headlight relay
250 - Speed sensor
303 - Automatic transmission selector lighting
319 - Air conditioning control panel
535 - ECO/PERF selector switch warning light
569 - 4 speed automatic transmission kickdown
597 - Engine fuse box
645 - Passenger compartment connection unit
754 - Electrical/hydraulic interface
779 - Automatic transmission multifunction switch
780 - Automatic transmission turbine or vehicle speed sensor
781 - Line pressure sensor
R22 - Engine/automatic transmission
R34 - Engine/dashboard
MH - Engine electric earth
MJ - Front right pillar electric earth
23-27