2010 RENAULT SCENIC steering

PETROL INJECTION
Fault finding - System operation
17B
17B - 7
PETROL INJECTION
Fault finding - System operation
17B
17B - 7V9 MR-372-J84-17B050$094.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54PETROL INJECTION
Fault finding - System operation
1. SYSTEM OPERATION
Composition
The injection system consists of the:
– accelerator potentiometer,
– clutch pedal switch,
– TDC sensor,
– atmospheric pressure sensor,
– air temperature sensor,
– coolant temperature sensor,
– upstream oxygen sensor,
– downstream oxygen sensor,
– cruise control switch,
– steering column switch,
– cruise control on/off switch,
– fuel vapour absorber,
– injection computer,
– motorised throttle valve,
– 4 injectors,
– 4 pencil coils,
– pinking sensor,
– camshaft dephaser solenoid valve (non-LPG K4M only),
– camshaft position sensor (non-LPG K4M only),
– turbocharging pressure sensor (F4R turbo only)
– electric coolant pump (F4R turbo only),
– wastegate solenoid valve (only on F4R Turbo),
– turbocharging solenoid valve (only on F4R-Turbo)
Computer
128 track SAGEM type S3000 FLASH EEPROM computer controlling injection and ignition.
Multipoint injection in sequential mode.
Connections to the other computers:
– air conditioning,
– UCH,
– protection and switching unit (UPC)
– Automatic Gearbox Electronic Control Unit (AUTO).
– airbag,
– ABS/ESP,
– instrument panel.
MR-372-J84-17B050$094.mif

PETROL INJECTION
Fault finding - System operation
17B
17B - 10
PETROL INJECTION
Fault finding - System operation
17B
17B - 10V9 MR-372-J84-17B050$094.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
Fuel supply management
Fuel is supplied by the fuel pump. It is controlled each time the ignition is switched on, for 1 second, to provide a
certain pressure level in the circuit, and thereby achieve a correct start, particularly if the vehicle has been unused
for a long time.
When the engine is running, the fuel pump relay is always controlled.
Control of the petrol pump relay can be viewed through status ET047 Petrol pump control circuit.
The petrol tank is vented by way of a canister filled with activated charcoal that traps the vapour from the petrol tank.
This canister is bled via the engine vacuum pipe. It enters the inlet plenum via a hose, whose section is controlled by
a bleed valve. It is controlled by the injection computer via the opening cycle ratio. For reasons of engine instability
or canister bleed solenoid valve operating noise emitted by the vehicle, there are two possible frequencies for
controlling the canister bleed solenoid valve:
●a low frequency 8Hz,
●a high frequency 20 Hz.
The frequency of the control opening cycle ratio depends on the engine speed.
Bleed the canister to drain it as it fills, to limit vapour release into the air if a canister is saturated for example.
Air supply management
The idling speed regulator performs all the calculations required for physical control of the idling speed actuator: the
motorised throttle. The functional component of the regulator is adaptive (variation programming and ageing).
If the idling speed regulation conditions are observed, ET054 Idle speed regulation is ACTIVE, the idling speed
regulator continuously positions the motorised throttle to maintain the engine speed at its idling setpoint. The
motorised throttle opening ratio necessary to comply with the speed setpoint is then given by parameter PR091
Idling speed regulation theoretical OCR.
Note on parameter PR091:
This parameter uses only 2 parameters accessible in fault finding frame: PR444 Idle speed integral correction and
PR090 Idle speed regulation programming value which is the integral adaptive action.
–PR090 Idling speed regulation programming value is a stored parameter designed to program dispersion and
engine ageing for the idling speed regulator. The programming is carried out only when the engine is idling and
warm, and no electrical consumer (air conditioning, fan assembly, power assisted steering) is operating. Therefore
it adjusts slowly.
–PR444 Idling speed regulation integral correction is continuously calculated to take into account the air required
by consumers.

PETROL INJECTION
Fault finding - System operation
17B
17B - 11
PETROL INJECTION
Fault finding - System operation
17B
17B - 11V9 MR-372-J84-17B050$094.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
Adaptive idling speed correction:
Under normal warm operating conditions, the idling speed opening cycle ratio value PR091 Idling speed regulation
theoretical OCR varies between a high value and a low value to obtain the nominal idling speed.
After operating dispersion (running in, engine fouling, etc.), the opening cycle ratio value may be close to the high or
low values.
The adaptive correction PR090 Idling speed regulation programming value on the idling speed opening cycle
ratio compensates for the gradual variations in the engine's air requirement, by bringing the idling speed opening
cycle ratio back to an average nominal value.
This adjustment only takes effect if the coolant temperature is above 75 °C, 1 minute after starting the engine and
during the idle speed regulation phase.
Idling speed setpoint calculation:
The idling speed setpoint is given by parameter PR010 Idle speed regulation valve setpoint.
The idling speed regulation setpoint depends on the coolant temperature, the depollution programming, the climate
control requirements, the position of the gearbox selector, any power assisted steering action, the passenger
compartment heating resistors, the oil temperature (engine protection) and the electricity balance calculated by the
injection software (the engine speed is increased by 160 rpm maximum if the battery voltage remains below 12.7 V).
Richness management
For optimal operation of the catalytic converter, the richness must be maintained around 1.
Richness regulation is controlled by the upstream sensor. The sensor gives voltage according to the difference
between the partial oxygen pressures contained in the exhaust and a cavity filled with a reference mixture
(atmosphere).
As the partial oxygen pressure in the exhaust is representative of the richness, the voltage supplied to the computer
represents a Rich - Lean signal.
Adaptive richness correction:
In loop mode, the richness regulation corrects the injection duration in order to obtain a mixture which is as close as
possible to a richness of 1. The richness correction value PR138 Richness correction is close to 50 %, with limits
of 0 and 100 %.
The richness adaptive corrections PR143 Self-adapting richness gain and PR144 Self-adapting richness offset
are used to offset the injection mapping to centre richness regulation on 50 %.
Adaptive corrections take 50 % as an average value after computer initialisation (clearing the programming) and have
the following limit values:

PETROL INJECTION
Fault finding - Fault summary table
17B
17B-32
PETROL INJECTION
Fault finding - Fault summary table
17B
17B-32V9 MR-372-J84-17B050$282.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
Tool faultAssociated
DTC codeDescriptionLevel 2 fault
warning light
(Red brake
warning light)Level 1 fault
warning light
(Orange
injection
warning light)No warning
light onOBD
warning light
DF102 2502Signal: power sig.*
available1.DEF
DF105 0585Cruise control/
speed limiter on/off
circuit1.DEF
DF106 0575Cruise control/
speed limiter
function selectors
on steering wheel1.DEF
DF109 0313Low fuel level
misfiring1.DEF/
2.DEF/
3.DEF
DF119 0340Camshaft sensor
signal1.DEF/2.DEF/
3.DEF/4.DEF
DF126 1604Passenger
compartment
heating resistor
(RCH)1.DEF
DF138 0830 Clutch pedal switch 1.DEF
DF154 0335Flywheel signal
sensor circuit1.DEF/2.DEF/
3.DEF
DF196 0225Pedal sensor
circuit gang 11.DEF
CO/CC.0/
CC.1CO/CC.0/
CC.1
2.DEF
DF198 2120Pedal sensor
circuit gang 2CO
CC.0/ CC.1CO
CC.0/ CC.1
DF228 0504 Brake signal 1.DEF/2.DEF
DF232 0530Refrigerant
pressure sensor
circuit1.DEF
DF361 0351Ignition coil control
- cylinders 1 - 4CO.0/CC.1
1.DEFCO.0/CC.1
1.DEF
DF362 0352Ignition coil control
- cylinders 2 - 3CO.0/CC.1
1.DEFCO.0/CC.1
1.DEF
DF377 C115Petrol↔ LPG
connection1.DEF/2.DEF
DF394 0420Catalytic converter
operating fault1.DEF/
2.DEF
DF398 0170Fuel circuit
operating faultCO/ 1.DEF

PETROL INJECTION
Fault finding - Interpretation of faults
17B
17B-81
PETROL INJECTION
Fault finding - Interpretation of faults
17B
17B-81V9 MR-372-J84-17B050$376.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
DF106
PRESENT
OR
STOREDCRUISE CONTROL/SPEED LIMITER SELECTOR SWITCH ON
STEERING WHEEL
1.DEF: No signal
IMPORTANT
To remove or check the cruise control/speed limiter control switches you need to remove the airbag (See
MR 364 or 370 Mechanics, 88C, Airbag and pretensioners).
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is present after a road test using the cruise control then the speed limiter
function.
Check the cleanliness and condition of the increase switches at the steering wheel and their connections.
Repair if necessary.
Disconnect the battery.
Disconnect the computer. Check the cleanliness and condition of the connections.
Use the "Universal bornier" to check the insulation and continuity of the following connections:
Injection computer, connectorA, track D2 track 2 of the steering wheel control switch
Injection computer, connectorA, track D3 track 1 of the steering wheel control switch
Repair if necessary.
If the fault is still present, deal with the other faults then proceed to the conformity check.
AFTER REPAIRFollow the instructions to confirm repair.
Deal with any other faults.
Clear the stored faults.
S3000_V4C_DF106/S3000_V54_DF106

PETROL INJECTION
Fault finding - Conformity check
17B
17B-124
PETROL INJECTION
Fault finding - Conformity check
17B
17B-124V9 MR-372-J84-17B050$470.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
SUB-FUNCTION: FUEL CIRCUIT (continued 1):
OCR: Opening Cycle Ratio
NOTESOnly check the conformity after a complete check with the diagnostic tool. The values
shown in this conformity check are given as a guide.
Application conditions: Engine off, ignition on.
Order FunctionParameter or Status Checked
or ActionDisplay and notes Fault finding
4Motorised
throttlePR090:Idle speed regulation
programming value- 12% < PR090 < 12%
PR090, an adaptive built-in
action, is a stored
parameter designed to
program variation and
engine ageing for the idle
speed regulator. These are
programmed only when the
engine is idling and warm,
and no electrical
consumers (electrical
windscreen, air
conditioning, GMV, power
steering) have been
selected. Therefore it
adjusts slowly.WITHOUT
5Motorised
throttlePR091:Theoretical idle
speed regulation
OCR0% < PR091 < 60%
When the conditions for
regulation are met, the idle
regulator continually
repositions the motorised
throttle to keep the engine
speed at the idling speed
setting. The motorised
throttle opening ratio
required to adhere to the
engine speed setpoint is
then given by parameter
PR091.

PETROL INJECTION
Fault finding - Conformity check
17B
17B-148
PETROL INJECTION
Fault finding - Conformity check
17B
17B-148V9 MR-372-J84-17B050$517.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
SUB-FUNCTION: FUEL CIRCUIT (continued 1):
OCR: Opening Cycle Ratio
NOTESOnly perform this conformity check after a complete check with the diagnostic tool.
The values shown in this conformity check are given as a guide.
Application conditions: Engine warm, idling.
Order FunctionParameter or Status
Checked or ActionDisplay and notes Fault finding
5
Motorised
throttlePR090:Idle speed
regulation
programming
valuePR090≈ 0%
PR090, an adaptive built-in
action, is a stored parameter
designed to program variation
and engine ageing for the idle
speed regulator. These are
programmed only when the
engine is idling and warm, and
no electrical consumers
(electrical windscreen, air
conditioning, GMV, power
steering) have been selected.
Therefore it adjusts slowly.WITHOUT
6 PR091:Theoretical idle
speed regulation
OCR5% When the conditions for
regulation are met, the idle
regulator continually
repositions the motorised
throttle to keep the engine
speed at the idling speed
setting. The motorised throttle
opening ratio required to adhere
to the engine speed setpoint is
then given by parameter PR091.

PETROL INJECTION
Fault finding - Interpretation of statuses
17B
17B - 187
PETROL INJECTION
Fault finding - Interpretation of statuses
17B
17B - 187V9 MR-372-J84-17B050$611.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
ET415
(CONTINUED 1)
STATUS 2Brake pedal depressed
The cruise control function is deactivated when the brake pedal is depressed.
Status ET415 becomes STATUS 2 when driving with cruise control active (ET042
Cruise control/Speed limiter: CRUISE CONTROL) and the brake pedal is depressed.
This deactivates cruise control.
Reinitialise status ET415 on the injection computer by running command RZ001
"Fault memory".
If status ET415 becomes STATUS 2 without depressing the brake pedal, consult the
interpretation of statuses ET704 Brake switch no. 1 and ET705 Brake switch no. 2.
STATUS 3Clutch pedal depressed
Manual gearbox ONLY
The cruise control function is deactivated when the gearbox is not coupled to the engine
(clutch pedal depressed).
Status ET415 becomes STATUS 3 when driving with cruise control active (ET042
Cruise control/speed limiter: CRUISE CONTROL) and the clutch pedal is depressed.
This deactivates cruise control.
Reinitialise status ET415 on the injection computer by running command RZ001
"Fault memory".
If status ET415 becomes STATUS 3 without the clutch pedal being depressed, consult
the interpretation of status ET405 Clutch pedal switch.
If the vehicle is fitted with automatic transmission:
Test the multiplex network: check the configuration of the multiplex network in relation to
the vehicle's technical specification, especially the configuration of the automatic
transmission computer (see 88B, Multiplexing)
STATUS 4Cancel button pressed
The cruise control/speed limiter function is deactivated whenever the suspend button is
pressed.
Status ET415 becomes STATUS 4 while driving when:
- Either the cruise control is active.
- Or the speed limiter is active,
- and the driver presses the 0 button.
This action deactivates the Cruise control/Speed limiter.
Reinitialise status ET415 on the injection computer by running command RZ001
"Fault memory".
If status ET415 becomes STATUS 4 without pressing the 0 button, consult the
interpretation of status ET703 Cruise control/speed limiter buttons and run fault
finding on the R/0 control button located on the right-hand side of the steering wheel.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition and carry out a road test followed by a test with the diagnostic
tool