relay RENAULT MEGANE SCENIC 1995 Service Owner's Manual

INJECTION
General
17
F3R engine
1Injection computer
2Pinking sensor
3Coolant temperature sensor
4TDC sensor
5Fuel vapour recirculation solenoid valve
6Cylinder reference sensor
7Idle speed regulation solenoid valve
8Throttle position potentiometer
9Air temperature sensor
10Absolute pressure sensor
11Canister
12Coil for cylinders 1 - 4
13Coil for cylinders 2 - 3
14Fuel pump relay
15Anti-interference condenser
16Air filter
17Oxygen sensor
LOCATION OF COMPONENTS
17-11

INJECTION
Operating wiring diagram
17
KEY TO OPERATIONAL WIRING DIAGRAMS (E7J, F3R, K7M)
COMPONENT NO DESCRIPTION
109
119
120
146
147
149
193 to 196
218
222
224
225
228
236
238
242
244
247
250
272
310
319
341
371
398
437
565
597
645
649
663
664
679
746
772
777
927
MF
MHOn board computer
Automatic transmission computer
Injection computer
Pinking sensor (located under the inlet manifold for E7J engine)
Absolute pressure sensor
TDC sensor
Injectors
Fuel pump
Throttle position potentiometer
Power assisted steering pressostat
Diagnostic socket
Idle speed regulation micromotor
Fuel pump relay (in engine fuse box)
Injection feed locking relay
Oxygen sensor
Coolant temperature sensor
Instrument panel
Vehicle speed sensor
Air temperature sensor
Ignition power module
Air conditioning control panel
Idle speed regulation solenoid valve
Fuel vapour recirculation solenoid valve
Exhaust gas recirculation solenoid valve (EGR)
Throttle body heater (under throttle body)
Throttle body assembly
Engine fuse box
Passenger compartment connection unit
Idle speed regulation stepping motor
Dual ignition coil n°1 (cylinders 1 and 4)
Dual ignition coil n° 2 (cylinders 2 and 3)
Radio anti-interference condenser
Cylinder reference sensor
Heater relay (in engine fuse box)
Power fuse board (near battery)
Inertia switch
Rear right hand electrical earth
Engine electrical earth (located on the cylinder block between the starter and the al-
ternator for the E7J engine)
17-39

INJECTION
Operating wiring diagram
17
E7J engine
COMPUTER TRACK ALLOCATION
TrackALLOCATION
1Power earth
2Electronic earth
3Vehicle speed information
4+ before ignition (permanent) computer memory
5Canister bleed signal (sequential earth period)
6Pump relay control (via track N° 2)
7Locking relay control (via track N° 2)
8Diagnostic line for erasing the memory and power assisted steering pressostat information
9Throttle position potentiometer information (pin N° 4 on 222)
10Heater relay command
11TDC sensor signal (track B)
12Rev counter information at instrument panel
13Connection with injection fault warning light on instrument panel
14Air temperature information
15Coolant temperature information
16+ 5 V feed for absolute pressure sensor and throttle potentiometer
17Common earth for absolute pressure sensor, throttle potentiometer and coolant temperature
sensor
18Emission of diagnostic signal to diagnostic socket
19Main computer feed via injection locking relay
20Air conditioning compressor command
21Injector control via earth
22Not used
23+ or - feed to idle speed micromotor (pin N° 1)
24+ or - feed to idle speed micromotor (pin N° 2)
17-41

INJECTION
Operating wiring diagram
17
TrackALLOCATION
25Not used
26Not used
27Not used
28Command for coil for cylinders 1 and 4
29Command for coil for cylinders 2 and 3
30Command for injector n° 1 and n° 4 via earth (n° 1 flywheel end)
31Pinking sensor screened cable
32+12 V before ignition
33TDC sensor signal (track B)
34TDC sensor signal (track A)
35Stepping motor command (0 - 12 V)
36Stepping motor command (0 - 12 V)
37Immobiliser coded line input
38Uni-directional diagnostic line L for entry into diagnostic mode only
(looking for computer)
39Not used
40Stepping motor command (0 - 12 V)
41Throttle angle information for automatic transmission computer
42RCO control (sequential earth period for canister bleed solenoid valve RCO)
43Command for injection fault warning light on instrument panel
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 and engine speed information
49Not used
K7M engine
17-45

INJECTION
Operating wiring diagram
17
TrackALLOCATION
50Fuel flow information for on board computer
51Air conditioning compressor clutch operation prevention command
(0 V → authorisation ; 12 V → prevention)
52Monitoring of injector feed and fuel pump feed from relay (236)
53Not used
54Not used
55Not used
K7M engine
17-46

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
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

FUEL TANK
Fuel tank
19
In the engine compartment, disconnect the fuel
pump relay (identifiable as it has larger section
wires , 5 mm
2 , on tracks 3 and 5) located in the
engine connection unit.
98756R1
DRAINING THE FUEL TANK (diesel version)
As there is no electric fuel pump, a pump must be
used to drain the fuel tank.
Use for example:
- the INTAIRCO pneumatic pump (see
EQUIPMENT 95 catalogue),
B - Fuel relay
Shunt tracks 3 and 5 and allow the fuel to run out
until it is only pumped out intermittently.
Disconnect the shunt.
Reconnect the relay.
Disconnect the battery.- piston pump 333. Refer to your After Sales
Head Office for more details.
76003S
99641S
19-20

- the heat shield from the exhaust manifold,
- the catalytic converter (disconnect the oxygen
sensor) and secure the exhaust pipe to the
body,
- the horn,
- the acoustic tie-rod between the shock
absorber turrets,
- the air filter,
- the earth strap,
- the absolute pressure sensor,
- the expansion bottle and secure it to the
engine.
Disconnect:
- the accelerator cable as well as the kickdown
switch connector,
- the brake servo pipe,
- the relay plate and the electrical connectors
from the engine connection unit,
AUTOMATIC TRANSMISSION
Automatic transmission (Removal - Refitting)
23
K7M
ENGINE
- the connector from the automatic transmission
computer,
- the canister pipe.
Remove the battery mounting bracket.
- the heating pipes on the thermostat.
Unclip the radiator and move it away by securing
it to the engine.
98756R
Disconnect:
- the injection supply wire located in the scuttle
panel as well as the starter motor supply,
- the fuel inlet and outlet hoses using Mot. 1311-
06, unclip them from their support,
99461R
23-16