1995 RENAULT MEGANE SCENIC engine

- 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

AUTOMATIC TRANSMISSION
Automatic transmission (Removal - Refitting)
23
K7M
ENGINE
SPECIAL NOTES FOR VEHICLES FITTED WITH
DRIVER’S AIRBAG
ATTENTION
:
to prevent any damage being done to the rota-
ting switch under the steering wheel, please fol-
low these instructions :
Before releasing the steering column and the
rack, the steering wheel MUST be immobilised,
wheels straight, using the "steering wheel
locking" tool throughout the duration of the re-
pair. Any doubts regarding the correct centring of
the rotating switch means that the steering
wheel has to be removed so as to apply the cen-
tring method as described in chapter 88 "AIR-
BAG".
REMINDER
: in this case, only qualified personnel
who have received specific training may under-
take this work. Remove:
- the automatic transmission selector control,
- the nut and eccentric bolt (4) (remove it using
the pin extractor) from the steering shaft yoke
after having pushed back the protector.
97390-1S
Remove the nut (A), then, using a copper
hammer, hit the stud in the left hand suspended
mounting in order to remove it.
Put a wedge between the automatic transmission
and the front left hand sub-frame.
PREPARING TOOL MOT. 1040-01
Position the roller pin in the lower holes (G).
It is then secured to the sub-frame using the T-
pieces (I).
92442R
PRG23.2
23-17

AUTOMATIC TRANSMISSION
Automatic transmission (Removal - Refitting)
23
K7M
ENGINE
Lower the final drive until the tool touches the
ground.
Remove:
- the shock absorber upper mounting bolts,
- the sub-frame mounting bolts. Secure Mot. 1040-01 under the sub-frame.
Extract the engine and transmission assembly by
lifting the body.
Secure the spring-shock absorber assembly with
rope.
Separate the engine and transmission assembly
from the sub-frame by removing:
- the upper radiator hose,
- the power assisted steering reservoir and the
pump,
- the power assisted steering pipe mounting on
the automatic transmission.
Unclip the wiring loom from the sub-frame.
Position the lifting tool.
Remove:
- the right hand mounting,
- the engine tie-bar.
Release the driveshafts.
99588S
98755R
PRG23.3
23-18

AUTOMATIC TRANSMISSION
Automatic transmission (Removal - Refitting)
23
K7M
ENGINE
Separate the gearbox from the engine by :
- removing the starter motor,
- removing the bolts from the automatic trans-
mission sump.
Remove:
- the hoses on the exchanger, Lift the engine from the sub-frame.
91131S
- the converter bolts
- the bolts around the gearbox and the TDC sen-
sor.
Separate the automatic transmission from the en-
gine.
REFITTING (special notes)
Refit the converter by positioning it with respect
to the mounting bolts.
Tighten the bolts around the automatic transmis-
sion.
Refitting is the reverse of removal.
Aligning the engine sub-frame with the body will
be made easier by positioning two approximately
100 mmlong threaded rods in the two front sub-
frame-body mountings.
Tighten the sub-frame front mounting bolts to a
torque of 6 daN.m. and to a torque of 11 daN.m at
the rear.
Tighten all nuts and bolts to the re-
commended torque.
Fit the caliper mounting bolts using Loctite
FRENBLOC and tighten them to the correct tor-
que.
Press the brake pedal several times to bring the
pistons back into contact with the brake pads.
Fill:
- the cooling circuit and purge it (see chapter 19),
- the engine with oil if necessary.
NOTE : check that the steering shaft yoke spacer is
in place when refitting.
99586R2
23-19

AUTOMATIC TRANSMISSION
Wiring
23
The new generation of A4.2 automatic transmission is fitted with monoblock wiring which means that many
of the intermediate connectors are no longer required. As a result, the method for repairing sensors or
switches is different.
PRG23.5
1 - 55 track connector on the automatic transmission computer
2 - Oil pressure sensor
3 - Electro-hydraulic interface (sealed connector)
4 - Inter engine unit connection
5 - Injection/diagnostic connector
6 - Pressure sensor connector
7 - Speed sensor
8 - Multifunction switch
23-23

AUTOMATIC TRANSMISSION
Wiring
23
Removing the wiring assembly is specific to the
AD4 A4.2.
REMOVAL
Put the vehicle on a two post lift.
Disconnect the battery.
Remove the front left hand wheel.
From the wheel arch:
Remove:
- the earth wire from the multifunction sensor,
- the multifunction sensor mounting bolt (A).
On the vehicle:
- position the lifting plate (tool made locally as
described on the next page).
99586R1
99182S
99613S
98750R1
Remove the engine torque traction link on the
gearbox side.
Remove the speed sensor (mounting bolt (B)).
Remove gear selector control ball joint (C).
Remove all the wiring assembly, taking note of its
position and mountings so that is refitted
correctly.
Disconnect the 52 track connector and the
connector in the inter engine unit. Fit the engine support tool with the support
bracket on the left hand side.
23-25

AUTOMATIC TRANSMISSION
Wiring
23
There are two possible solutions for manufactu-
ring this plate.
1)By modifying the existing plate on the E7J en-
gine (air filter support plate mounted onto the
cylinder head).
2)By having it manufactured locally
Parts list: - 1 plate of thickness 4 or
5 mm in semi-hard steel,
-
2 HEX M8 × 20 bolts (collar
bolts).
99613S1
99585R
Disconnect the connectors from the pressure sen-
sor and the diagnostic/injection socket.
Disconnect the sealed connector switch.
Remove the wiring.
99613S2
REFITTING
Replace the wiring without securing it.
Refit:
- the speed sensor,
- the multifunction sensor.
Refit the mounting on the gearbox side.
Remove the engine support tool.
Reconnect all the components.
Secure the wiring using its clips.
LIFTING PLATE
23-26

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