1995 RENAULT MEGANE SCENIC sensor

86065-3R
IGNITION
Static ignition
17
F3R - K7M
engines
NOTE : advance correction depending on the si-
gnal from the pinking sensor is dealt with in sec-
tion 17 Injection.
Cylinder 1 is at the flywheel end.SPECIAL NOTES FOR THE FLYWHEEL
Description
The flywheel has 60 regularly spaced teeth. Two
teeth have been removed to create a fixed marker
gap at 84° or 14 teeth before TDC for cylinders 1
and 4. There are therefore in fact only 58 teeth.
Cylinders 1 and 4 are at TDC when the arrow (A)
passes in front of the engine speed sensor (169).
Cylinders 2 and 3 are at TDC when the arrow (B)
passes in front of the engine speed sensor (169).
Operating principle
The computer knows that TDC for cylinders 1 and
4 is located on the rising edge of the 15th tooth
after the fixed gap. Consequently, depending on
the amount of advance to be used, the computer
knows exactly where to locate the ignition point
by counting the number of teeth.
TDC for cylinders 2 and 3 is located on the rising
edge of the 45th tooth after the fixed gap.
17-4

SPECIAL NOTES FOR BOSCH MONOPOINT INJECTION
• Use the XR25 with the latest cassette and fiche n° 28.
Read the computer Part Number using code G70*.
Erase the memory using code G0**.
• Injection warning light operational (see principle of ignition section).
• Maximum engine speed before ignition cut-out: 6 500 rpm.
• Corrected idle speed after operation of the air conditioning: 900 rpm.
• Corrected idle speed with wheels at full lock (power assisted steering pressostat information) : 825 rpm.
• Canister bleed solenoid valve controlled by RCO signal depending on engine operating conditions (the
valve is not operated for no load).
• If there is a fault with the absolute pressure sensor, the manifold pressure is recreated depending on the
throttle position and the engine speed.
• Reading of the default values from the air temperature sensor (#03) or coolant temperature sensor (#02),
not the values taken in defect mode by the computer when they are recognised as being faulty.
• There is a+after ignition input (track 30) to inform the computer that the ignition has been turned off
while it remains fed for a few seconds to reposition the idle speed micromotor.
(Avoids false detection of a fault in the engine immobiliser system).
INJECTION
General
17
E7J engine
FITTING A 2ND GENERATION ENGINE IMMOBILISER REQUIRES A SPECIAL PROCEDURE FOR REPLACING THE
COMPUTER.
17-6

INJECTION
General
17
E7J engine
1Injection computer
2Coolant temperature sensor (white connector)
3TDC sensor
4Fuel vapour recirculation solenoid valve
5Ignition power module
6Idle speed regulation micromotor
7Throttle position potentiometer
8Absolute pressure sensor
NOTES:
• the injector and the air temperature sensor are integral in the upper section of the throttle body (see sec-
tion 12),
• the pinking sensor is located under the inlet manifold,
• the diagnostic socket is located in the passenger compartment connection unit.
LOCATION OF COMPONENTS
17-7

INJECTION
General
17
K7M engine
1Injection computer
2Pinking sensor
3Coolant temperature sensor
4TDC sensor
5Fuel vapour recirculation solenoid valve
7Idle speed regulation stepping motor
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
18Power assisted steering pressostat
19EGR solenoid valve
20Vacuum reservoir
21EGR air filter
LOCATION OF COMPONENTS
17-9

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

99460-1R
INJECTION
Location of components
17
K7M engine
1Injection computer
99364R
99368R
99360R
3Coolant temperature sensor
4TDC sensor 2Pinking sensor
(tightening torque: 2.5 daN.m)
17-12

INJECTION
Location of components
17
K7M engine
7Idle speed regulation stepping motor
8Throttle position potentiometer
9Air temperature sensor
10Absolute pressure sensor
99359R3
12Coil for cylinders 1-4
13Coil for cylinders 2-3
15Anti-interference condenser
99365R1
17Oxygen sensor
(tightening torque: 4.5 daN.m)
99355-1R
99361R
5Fuel vapour recirculation solenoid valve
17-13

98900-1R1
INJECTION
Location of components
17
F3R engine
1Injection computer
5Fuel vapour recirculation solenoid valve
99218-1R
2Pinking sensor
(tightening torque : 2.5 daN.m)
12Coil for cylinders 1 - 4
13Coil for cylinders 2 - 3
15Anti-interference condenser
3Coolant temperature sensor (clipped)
6Cylinder reference sensor (see removal in
sub-section "Special notes for sequential in-
jection")
7Idle speed regulation solenoid valve
8Throttle position potentiometer (non-
adjustable)
9Air temperature sensor (clipped)
10Absolute pressure sensor
99238R2
4TDC sensor
99221R
17-15