1995 RENAULT MEGANE SCENIC Service Repair Manual

Page 177 of 2492

RENAULT MEGANE SCENIC 1995  Service Repair Manual DIESEL EQUIPMENT
Pre-post-heating unit
13
LOCATION
Pre-post-heating unit (A)
This unit has two diodes to prevent the feeding of
the heater plugs when the air conditioning system
is operating and also

Page 178 of 2492

RENAULT MEGANE SCENIC 1995  Service Repair Manual DIESEL EQUIPMENT
Pre-post-heating unit
13
PRINCIPLE OF OPERATION FOR GAS PRE-POST-
HEATING
1. "Pre-heating" when the ignition is turned on
a) Variable pre-heating
The time period during which the warn

Page 179 of 2492

RENAULT MEGANE SCENIC 1995  Service Repair Manual 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 ignit

Page 180 of 2492

RENAULT MEGANE SCENIC 1995  Service Repair Manual DIESEL EQUIPMENT
Pre-post-heating unit
13
FAULT FINDING
3. There is no fast idle when engine is cold (with air conditioning option)
TEST SOLUTION
Run the air conditioning.
• The fast idle operates

Page 181 of 2492

RENAULT MEGANE SCENIC 1995  Service Repair Manual DIESEL EQUIPMENT
Pre-post-heating unit
13
FAULT FINDING
4. Engine operation fault (difficulty in starting, idle speed unstable, noise...)
Check:
- the feed to the pre-post-heating unit :
•+before ig

Page 182 of 2492

RENAULT MEGANE SCENIC 1995  Service Repair Manual DI1306
DIESEL EQUIPMENT
Injector holder - heater plug
13
94952R1
1 + 2Injector holder assembly.
 3Seal between the injector holder assembly
and the cylinder head.
 4Flame arresting washer.
 5Injector

Page 183 of 2492

RENAULT MEGANE SCENIC 1995  Service Repair Manual 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

Page 184 of 2492

RENAULT MEGANE SCENIC 1995  Service Repair Manual 99461R
DIESEL EQUIPMENT
Fuel filter
13
REMOVAL - REFITTING (Special notes)
To remove the filter assembly use tool Mot. 1311-
06 for the quick release unions.
When refitting, refit the quick release un