RENAULT MEGANE SCENIC 1995 Service Repair Manual

INJECTION
Operating wiring diagram
17
F3R engine
PRJ99473
17-47

INJECTION
Operating wiring diagram
17
COMPUTER TRACK ALLOCATION
TrackALLOCATION
1Not used
2Power earth n° 1
3Power earth n° 2
4Command for injector n° 3 via earth
5Heated windscreen information (0 - 12 V)
6Air conditioning on - off information and request for compressor operation authorisation
(0 - 12 V)
7Park / Neutral / torque reduction information (0 - 5 V) (F3R 751)
8Pinking sensor signal
9Not used
10Not used
11Bi-directional diagnostic line K used for entry into fault finding mode
(looking for computer), emission of diagnostic signals from computer, application of command
modes (G..*), erasing the memory (G0**)
and ending fault finding (G13*)
12Vehicle speed information
13Fuel flow information for on board computer
14Not used
15Coolant temperature sensor information
16Manifold pressure information transcribed by absolute pressure sensor
17Voltage information from oxygen sensor
18Oxygen sensor earth
19Throttle position potentiometer information
20Air temperature sensor information
21Not used
22Not used
23Not used
24+ 12 V after ignition
F3R engine
17-48

INJECTION
Operating wiring diagram
17
TrackALLOCATION
25Command for injector n° 2 via earth
26Command for injection fault warning light on instrument panel
27Not used
28Command for coil for cylinders 1 and 4
29Command for coil for cylinders 2 and 3
30Command for injector n° 4 via earth (timing end)
31Pinking sensor screened cable
32+12 V before ignition
33TDC sensor signal (track B)
34TDC sensor signal (track A)
35Immobiliser coded line input
36Not used
37Not used
38Uni-directional diagnostic line L for entry into diagnostic mode only
(looking for computer)
39Not used
40Not used
41Throttle angle information for automatic transmission computer
42Cylinder reference sensor information
43Engine speed information
44Common earth for pinking sensor and coolant temperature sensor and absolute pressure sensor
45+ 5 V feed for absolute pressure sensor and throttle position potentiometer
46Common earth for air temperature sensor and throttle position potentiometer
47Not used
48Command (via earth) for fuel pump relay (236)
49Not used
F3R engine
17-49

INJECTION
Operating wiring diagram
17
TrackALLOCATION
50R.C.O. command (sequential earth period) for canister bleed solenoid
51Air conditioning compressor clutch operation prevention command
(0 V → authorisation ; 12 V → prevention)
52Monitoring of injector feed and fuel pump feed from relay (236)
53Command for injector n° 1 via earth (flywheel end)
54R.C.O. command (sequential earth period) for idle speed regulation valve
55Not used
F3R engine
17-50

COOLING
Specifications
19
VOLUME AND GRADE OF COOLANT
Engine Volume (in litres) Grade
F8Q
F3R
E7J - K7M
7.5
7
6
GLACEOL RX (type D)
use coolant only
THERMOSTAT
Engine type Begins to open (in °C) Fully open (in °C) Travel (in mm)
E7J - K7M - F8Q - F3R89 101 7.5
19-1

COOLING
Filling - bleeding
19
There is no water control valve.
Coolant circulates continuously in the heater
matrix, assisting with engine cooling.
FILLING
The following bleed screws must be opened:
- on the top of the radiator,
- on the heating hose,
- on the thermostat mounting(except E7J- K7M
engines ).
Fill the circuit at the expansion bottle opening.
Close the bleed screws as soon as fluid runs out in
a continuous jet.
Start the engine (2 500 rpm).
Adjust the level by overflow for approximately
4 minutes.
Close the expansion bottle.
BLEEDING
Let the engine run for 20 minutes at
2 500 rpm,until the engine cooling fan operates
(time required for automatic degassing).
Check the fluid level is close to the "Maximum"
mark.
NEVER OPEN THE BLEED SCREWS WHEN THE
ENGINE IS RUNNING.
TIGHTEN THE EXPANSION BOTTLE CAP WHEN THE
ENGINE IS WARM.
19-2

COOLING
Checking
2 - Checking the rating of the expansion bottle
cap
If fluid passes through the expansion bottle cap
valve, the cap must be replaced.
On the pump M.S. 554-07 fit tool M.S. 554-06 and
fit this to the valve to be checked.
Increase the pressure which should stabilise at the
calibration value for the cap valve, with a test to-
lerance of
± 0.1 bar.
Valve rating value:
19
1 - Checking the cooling circuit sealing
Replace the expansion bottle cap with tool
M.S.
554-01.
To this, connect tool M.S. 554-07.
Let the engine warm up then turn the ignition off.
Pump to put the circuit under pressure.
Stop pumping at 0.1 bar less than the rating value
of the expansion bottle cap.
The pressure should not drop. If it does, look for
the leak.
Slowly unscrew the union of tool M.S. 554-07 to
decompress the cooling circuit, then remove tool
M.S. 554-01 and refit the expansion bottle cap fit-
ted with a new seal.
SPECIAL TOOLING REQUIRED
M.S.554-07 Kit for checking cooling circuit sealing
M.S.554-01 Adaptor for M.S. 554-05
M.S.554-06 Adaptor for M.S. 554-05
97871R
Engine Valve colour Rating (in bar)
F8Q - E7JBrown 1.2
K7M - F3RBlue 1.6
19-3

COOLING
Radiator
- the two indicators,
- the mounting bolts from the radiator half
grilles and unclip them at (B).
19
REMOVAL
Put the vehicle on a 2 post lift.
Disconnect:
- the battery,
- the connectors for the fan, the relays and the
thermistor.
Remove the engine undertray.
Drain the cooling circuit from the lower radiator
hose (radiator end).
Remove:
- the two bolts (A) from the radiator mounting
brackets on the upper cross member,
98836-1R
- the bolts and nut from the dehydrating bottle,
99177R
98836R3
F8Q ENGINE / AC
19-4

COOLING
Radiator
Unclip the power assisted steering reservoir.
Remove:
- the 4 mounting bolts from the fan mounting
on the radiator and remove it,
- the 4 mounting bolts for the condenser on the
radiator,
19
Unclip the grille at (D) using a screwdriver and re-
lease the sides by lifting the tabs at (E).
99187R1
Remove the 6 mounting bolts for the upper cross
member and remove it.
98838R
99611R
- the radiator.
REFITTING
Refitting is the reverse of removal.
Fill and bleed the cooling circuit.
Disconnect the upper radiator hose by removing
the air filter inlet sleeve.
F8Q ENGINE / AC
19-5

COOLING
Diagram
19
1 Engine
2 Radiator
3 Expansion bottle with degassing after ther-
mostat
4 Heater matrix
5 Thermostat mounting
6 Oil temperature exchanger
7 3 mm diameter restriction
8 6 mm diameter restrictionWater pump
Thermostat
Bleed valve
Temperature switch
The rating of the expansion bottle cap is 1.2 bar
(brown).
99417R
F8Q ENGINE
19-6