1995 RENAULT MEGANE SCENIC wiring

FUEL SUPPLY
Fuel gallery
13
Remove the four bolts mounting the throttle
body (do not disconnect the coolant hoses which
warm the throttle body).
Remove the heat shield between the throttle
body and the manifold.F3R engine
99239-1R
Unclip the wiring and the pipe mounted on the
manifold and tilt the assembly towards the
injection computer.
Disconnect the injectors.
Remove the wiring mounting.
Disconnect:
- the fuel supply pipe (17) on the flywheel end,
marked by a green ring,
- the return pipe to the fuel tank (18) at the
timing end, marked by a red ring,
- the vacuum pipe (19) for the fuel pressure
regulator.
99229R
Remove the fuel gallery by sliding it along the
inlet manifold.
99229-1S
Remove:
- the two fuel gallery mounting nuts,
- the earth strap (15).
13-6

DIESEL EQUIPMENT
Pre-post-heating unit
13
FAULT FINDING
1. The pre-heating warning light does not operate
TEST SOLUTION
Earth the warning light output of connector (C) using
a 2 A fuse when the ignition is turned on (track B3).
• The fuse blows.
• The warning light does not illuminate.
• The warning light does illuminate.The warning light wiring in the instrument panel is in
short circuit. Repair the wiring.
The bulb is blown or the wiring is faulty.
Replace the bulb or repair the wiring.
Check:
- + battery on connector (A),
- + after ignition on connector (C),
- battery earth on connector (C).
If the feed is correct, replace the pre-post-heating
unit.
2. The pre-heating warning light only operates for a fraction of a second when the ignition is turned on.
TEST SOLUTION
Disconnect connector (B) and test the pre-heating:
• The warning light illuminates and there is a
voltage at the connector outputs (B).
• The warning light illuminates and there is no
voltage at the connector outputs (B).
• The pre-heating warning light illuminates for a
fraction of a second only.Check the plugs circuit. If it is correct, check and
replace the faulty plug(s).
Replace the pre-post-heating unit.
Check the before ignition feed to the pre-heating
unit.
13-33

PUMP
Mechanical power assisted steering pump
13
F8Q engine
with AC
SPECIAL TOOLING REQUIRED
Mot. 453-01 Hose clamp pliers
REMOVAL
Remove the belt (see corresponding section).
Fit clamp Mot. 453-01 to the supply pipe.
Remove:
- the pulley (three bolts),
- the wiring mounting and the high pressure
pipe by removing bolt (2),
99171R
99170R
REFITTING
Refitting is the reverse of removal.
99174-1R
- the supply pipe and the high pressure pipe,
- the three pump mounting bolts.
Remove the pump.
13-44

PUMP
Mechanical power assisted steering pump
13
F3R engine
with AC
SPECIAL TOOLING REQUIRED
Mot. 453-01 Hose clamp pliers
REMOVAL
Remove the belt (see corresponding section).
Fit clamp Mot. 453-01 to the supply pipe.
Remove:
- the pulley (three bolts),
- the wiring mounting,
- the supply pipe and the high pressure pipe,
99058S
- the three pump mounting bolts.
99502R
REFITTING
Refitting is the reverse of removal.
99502-1R1
Remove the pump.
13-45

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
PRJ99528
17-40

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
E7J engine
TrackALLOCATION
25No load information input
26Not used
27Power module command
28TDC sensor signal input (track A)
29Immobiliser coded line input via decoder unit
30+ 12 V information when ignition turned on
31Pinking sensor noise signal input
32+ 12 V after ignition information
33Voltage information dependent on manifold pressure seen by sensor (on track B)
34Air conditioning compressor operation request input
35Voltage from oxygen sensor input
17-42