1995 RENAULT MEGANE SCENIC diagram

FUEL SUPPLY
Fuel cut-out on impact
13
WIRING DIAGRAM
Key
120Injection computer
199Fuel pump
236Fuel pump relay
246Fuel shut off
927Inertia switch
PRJ99472
13-2

FUEL SUPPLY
Supply pressure
13
E7J engine
CHECKING THE FUEL SUPPLY PRESSURE
SPECIAL TOOLING REQUIRED
Mot. 1311-01 Fuel pressure test kit
Disconnect the fuel supply pipe (1) from the
throttle body and insert the0 - 10 bars pressure
gauge and the three way union from the test kit
Mot. 1311-01.
99089R
Shunt terminals (3) and (5) of the fuel pump relay
(B) in the engine connection unit (see diagram on
page 13-2).
98756R1
The pressure should be 1.06 bar.
Checking the pump safety valve
If the fuel pressure is correct, feed the fuel pump
and clamp the pipe with the two position valve
for a brief moment. The pressure should stabilise
at approximately 3 bars.
13-11

99366R
FUEL SUPPLY
Supply pressure
13
K7M engine
Fit the 0 ; 10 bars pressure gauge and the hose
Mot. 1311-01.
Shunt terminals (3) and (5) on the fuel pump relay
located in the engine fuse box (see diagram on
page 13-2).
The pressure should be 3 bars ± 0.2.
When a vacuum of 500 mbars is applied to the
pressure regulator, the fuel pressure should be
2.5 bars ± 0.2.
CHECKING THE PUMP SAFETY VALVE (under the
same conditions as previously)
Shunt terminals (3) and (5) of the fuel pump relay
(see diagram on page 13-2).
When the fuel return pipe is clamped briefly, the
pressure should stabilise between 4.5 and 7.5
bars.
13-13

FUEL SUPPLY
Supply pressure
13
CHECKING THE FUEL SUPPLY PRESSURE
SPECIAL TOOLING REQUIRED
Mot. 1311-01 Fuel pressure test kit (with 0 ;+
10 bars pressure gauge included)
99217R1
Disconnect the rear fuel pipe.
Fit the three way valve (1) from tool Mot. 1311-01
and connect the 0 ; + 10 bars pressure gauge.
Shunt terminals (3) and (5) of the fuel pump relay
located in the engine fuse box.
The pressure should be 3 bars ± 0.2.When a vacuum of 500 mbars is applied to the
fuel pressure regulator, the pressure should be
2.5 bars ± 0.2.
CHECKING THE PUMP SAFETY VALVE (under the
same conditions as previously)
Shunt terminals (3) and (5) of the fuel pump relay
(see diagram on page 13-2).
When the fuel return pipe is clamped briefly by
the two position valve, the pressure should
stabilise between 4.5 and 7.5 bars.
F3R engine
13-14

DIESEL EQUIPMENT
Idle speed settings
13
ADJUSTING THE FAST IDLE SPEED
Set the separate idle speed lever (4) against the
fast idle screw (5), then adjust the engine speed to
950 ± 25 rpm using this screw (5).
ADJUSTING THE POSITION OF THE FAST IDLE
CABLE GRIP
(when the idle speed and residual
flow settings are correct )
Check that the separate idle speed lever (4) is
against the idle speed screw (1).
Hold the cable taut.
Position the cable grip at a distance of :
-6 mm
± 1 (without air conditioning)
from lever (4)
-2 mm ± 1 (with air conditioning)
from lever (4)
NOTE : vehicles fitted with the air conditioning
option are fitted with a fast idle control
diaphragm operated pneumatically by a solenoid
valve. Fast idle is obtained during post-heating or
when air conditioning is selected (see operating
diagram in the pre-heating section).
ADJUSTING THE DECELERATION DAMPER (6)
When the adjustments above have been made,
the deceleration damper must be adjusted as
described below.
Slacken screws (7) to release the lever (A).
Fit a 1 mm shim between the deceleration damper
and the lever (A).
Push lever (A) on the deceleration damper to the
stop.
Ensure the load lever (2) remains in contact with
the residual flow screw (3).
Tighten the screws (7) in this position.
Remove the adjusting shim and ensure there is
contact between the load lever (2) and the
residual flow screw (3).
13-21

DIESEL EQUIPMENT
Operating diagram
13
PRJ99256
13-29

DIESEL EQUIPMENT
Pre-post-heating unit
13
DIAGRAM KEY
104Ignition switch
163Starter
171Air conditioning clutch
206Air conditioning trifunction pressure switch
247Instrument panel
251Bi-function coolant temperature switch
257Pre-heating unit
398EGR solenoid valve
412Fast idle solenoid valve (AC version)
597Engine fuse box
642AC / pre-heating separation diode
645Passenger compartment fuse box
680Pre-heating unit n° 1
681Pre-heating unit n° 2
682Pre-heating unit n° 3
683Pre-heating unit n° 4
711Diesel fuel pump
741Altimetric capsule
743Altimetric relay
777Power feed for fuse boxConnector (A)
+ Bat+ before ignition feed
Connector (B)
1Feed to heater plugs 1 and 3
2Feed to heater plugs 2 and 4
Connector (C)
A1 / S2Load dependence solenoid valve
control
A2 / PCLoad lever microswitch information
A3 / CTNCTN type sensor coolant temperature
information
B1/+APC+ after ignition feed
B2 / DEMStarter information
B3 / TemPre-heating warning light control (via
earth)
C1 / S1Not used
C2 / -Bat Earth
C3 / ClimFast idle solenoid valve control during
post-heating phase
92206-2R
IDENTIFICATION OF CONNECTORS
13-30

DIESEL EQUIPMENT
Fuel filter
13
LOCATION
Principle of the electric heater
The heater has heated studs. They are ceramic,
made from barium titanate which has a positive
temperature coefficient, meaning that its
resistance increases as its temperature increases.
99332R
1Fuel filter
2Electric heater
3Hand priming unit
The electric diesel fuel heater and the thermostat
are integral in the head of the filter.
DIAGRAM
PRJ99258
449Electric heater
450Diesel heating relay
597Engine fuse box
645Passenger compartment fuse box Operating temperature
Electrical circuit closes: 0°C
Electrical circuit opens: from 8°C
Heater power: 150 W
13-37