2010 RENAULT SCENIC fan speed

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 - 16
PETROL INJECTION
Fault finding - System operation
17B
17B - 16V9 MR-372-J84-17B050$094.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
4. Engine coolant temperature management
Engine cooling is provided by 1 or 2 fan assemblies (depending on the vehicle layout). The injection computer
requests the UPC to actuate them via the multiplex network.
To provide cooling:
Engine running, GMV1 is requested when the coolant temperature exceeds 99 °C and stops when the coolant
temperature falls below 96 °C. GMV2 is requested when the coolant temperature exceeds 102 °C and stops when
the coolant temperature falls below 99 °C.
With the engine off, only fan assembly 1 may be activated to provide the anti-percolation function (if engine is
stopped when very hot). The anti-percolation function is active with the ignition off for a determined period. During
this period, fan assembly 1 is requested if the coolant temperature exceeds approximately 100 °C and is shut down
if the coolant temperature drops below around 95 °C.
If a fault is detected on the coolant temperature sensor circuit, then fan assembly 1 is requested to operate
continuously.
If the engine coolant temperature goes beyond the warning threshold of 11 8 ° C, the injection computer requests the
instrument panel computer via the multiplex network to illuminate on the coolant temperature warning light until the
coolant temperature falls back below 115 ° C.
In addition to the engine requirements, the injection computer centralises the cooling requirements for the Air
conditioning and BVA/BVR functions.
5. Air conditioning function
The S3000 computer manages a cold loop air conditioning system.
– air conditioning request via multiplex connection,
– acquisition of air conditioning circuit pressure,
– vehicle speed
– air conditioning compressor control,
– fan assembly control request by Protection and Switching Unit.
The injection computer recovers the power absorbed by the air conditioning compressor and the fast idling speed
request using the pressure acquired in the air conditioning circuit.
These signals are necessary for adapting the engine management (idling speed regulation, air flow correction, etc.),
for several reasons:
– air conditioning compressor efficiency,
– sturdier engine to torque bucking caused by compressor activation,
– helping the alternator.
Requests for fan assembly 1 and/or fan assembly 2 are recovered based on the air conditioning circuit pressure and
the vehicle speed. In short, the lower the speed and the higher the pressure, the greater the fan assembly requests.

PETROL INJECTION
Fault finding - System operation
17B
17B - 20
PETROL INJECTION
Fault finding - System operation
17B
17B - 20V9 MR-372-J84-17B050$094.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
8. Mileage travelled with fault
These two parameters PR105 Distance travelled with OBD fault warning light on and PR106 Distance travelled
with fault warning light on are used to count the distance travelled with one of the injection fault warning lights lit:
level 1 fault warning light (amber) as well as the OBD warning light.
These counters can be reset to 0 using the diagnostic tool (clear faults command).
9. Inter-system engine functions
The inter-system connections concerning the particular requirements of engine management are as follows:
–OBD warning light illumination request by the instrument panel computer to prevent a pollution fault,
–level 1 warning light illumination request to warn of an operating safety fault relating to the injection system,
–level 2 warning light illumination request to warn of an operating safety fault or provide an engine
overheating alert,
– request for fan assembly activation for engine cooling, but also for the air conditioning and automatic
gearbox,
– air conditioning compressor shut-down request for engine programming requirements such as pulling away,
performance, anti-stalling, overspeed, etc.
– passenger compartment heating resistor shut-down or fixing request for engine programming requirements
such as pulling away, performance, anti-stall, overspeed, etc.

PETROL INJECTION
Fault finding - Replacement of components
17B
17B-26
PETROL INJECTION
Fault finding - Replacement of components
17B
17B-26V9 MR-372-J84-17B050$188.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54PETROL INJECTION
Fault finding - Replacement of components
1. COMPUTER REPLACEMENT OR REPROGRAMMING OPERATIONS
The system can be programmed and reprogrammed via the diagnostic socket using the RENAULT CLIP diagnostic
tool (Consult Technical Note 3585A or follow the instructions provided by the diagnostic tool).
Whenever the computer has been programmed, reprogrammed or replaced:
–Switch off the ignition.
–Start and then stop the engine (to initialise the computer) and wait 30 seconds.
–Switch the ignition back on and use the diagnostic tool to carry out the following steps:
– use command VP020 Enter VIN.
– deal with any faults declared by the diagnostic tool. Clear the computer memory.
– program the flywheel sensor target and throttle stops,
– carry out a road test followed by another check with the diagnostic tool. IMPORTANT
–Switch on the diagnostic tool (mains or cigarette lighter supply).
–Connect a battery charger (during the entire computer (re)programming procedure, the engine fan
assemblies are triggered automatically).
–Observe the engine temperature setpoints given on the diagnostic tool before (re)programming.
–Cut off all the electrical consumers (interior lighting, air conditioning, radio, etc.).
Operations to be carried out before the injection computer is reprogrammed:
Before reprogramming the injection computer, move the main Cruise control/Speed limiter switch to the rest
position. The information about the cruise control or the speed limiter displayed on the instrument panel
disappears.
Otherwise, if the main switch remains in the cruise control or speed limiter position during and after reprogramming,
the Cruise control/Speed limiter function will not be operational.
The procedure for resetting the function is as follows:
Vehicle ignition on.
– Position the main switch in rest position (the computer then detects the rest position).
– Position the switch in Cruise control position to activate the Cruise control function.
– Position the switch in Speed limiter position to activate the Speed limiter function.
IMPORTANT
It is not possible to try an injection computer coming from the Parts Department because it will no longer be
possible to use it on another vehicle.
MR-372-J84-17B050$188.mif

PETROL INJECTION
Fault finding - Interpretation of faults
17B
17B-34
PETROL INJECTION
Fault finding - Interpretation of faults
17B
17B-34V9 MR-372-J84-17B050$329.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54PETROL INJECTION
Fault finding - Interpretation of faults
DF001
PRESENT
COOLANT TEMPERATURE SENSOR CIRCUIT
1.DEF: Inconsistency of the signal
2.DEF: Abnormal voltage
3.DEF: Non-compliance with emission control standards
NOTESPriority when dealing with a number of faults:
Deal with fault DF011 Sensor supply voltage no. 1 first if it is present or stored.
Special note:
–the OBD warning light is lit,
– low-speed fan is operating continuously.
– Refer to parameter PR064 Coolant temperature:
if PR064 = 120°C, short circuit to + 12 V,
if PR064 = - 40°C, short circuit to earth.
Check the cleanliness and condition of the coolant temperature sensor and its connections.
Disconnect the battery and the injection computer.
Check the cleanliness and condition of the connections.
Repair if necessary.
Use the "Universal bornier" to check the insulation and continuity of the following connections:
Injection computer, connectorB, track F2 track B2 of the coolant temperature sensor
Injection computer, connectorB, track F4 track B1 of the coolant temperature sensor
Repair if necessary.
Measure the resistance of the coolant temperature sensor between tracks 2 and 3.
Replace the coolant temperature sensor if the resistance is not:
12.6 kΩ ±1.1kΩ at a coolant temperature of -10°C
2200Ω ± 112Ω at a coolant temperature of 25°C
810Ω ±39Ω at a coolant temperature of 50°C
283Ω ±8Ω at a coolant temperature of 80°C
1156Ω ±3Ω at a coolant temperature of 110°C
88Ω ±2Ω at a coolant temperature of 120°C
If the fault is still present, deal with the other faults then proceed with the conformity check.
AFTER REPAIRDeal with any faults declared by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
S3000_V4C_DF001P/S3000_V54_DF001P
MR-372-J84-17B050$329.mif

PETROL INJECTION
Fault finding - Interpretation of faults
17B
17B-67
PETROL INJECTION
Fault finding - Interpretation of faults
17B
17B-67V9 MR-372-J84-17B050$376.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
DF084
PRESENT
OR
STOREDACTUATOR RELAY CONTROL CIRCUIT
CO: Open circuit
CC.0: Short circuit to earth
CC.1: Short-circuit to + 12 V
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present with the engine running.
Special note:
This relay supplies the following actuators:
– the injectors
– the petrol fuel vapour absorber,
– the injection computer supply on track M2,
– the low-speed and high-speed fan assembly relays.
CO/CC.1: Actuators no longer supplied: the vehicle stalls and restart impossible.
CC.0: The actuators are supplied all the time: high electrical consumption when
stationary.
Intermittent CO: Intermittent relay cut-off: jerking while driving.
Disconnect the battery and the injection computer.
Check the cleanliness and condition of the injection actuator relay connections.
Check the cleanliness and condition of the UCH computer connections.
Repair if necessary.
Disconnect connector MN of the Protection and Switching Unit.
Check the cleanliness and condition of its connections.
Use the "Universal bornier" to check the insulation and continuity on the following connection:
Injection computer, connectorB, track D4Protection and Switching Unit, connector MN,
track 5
Repair if necessary.
If the fault is still present, carry out fault finding on the Protection and Switching Unit system (See87G, Engine
interconnection unit).
Contact the Techline.
AFTER REPAIRFollow the instructions to confirm repair.
Deal with any other faults.
Clear the stored faults.
S3000_V4C_DF084/S3000_V54_DF084

PETROL INJECTION
Fault finding - Conformity check
17B
17B-138
PETROL INJECTION
Fault finding - Conformity check
17B
17B-138V9 MR-372-J84-17B050$470.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
SUB-FUNCTION: COLD LOOP (continued 2):
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
11
Fan assemblyET022:Low speed fan
assembly requestIf the coolant
temperature reaches
98°C, the low-speed
fan unit is activated,
and is shut down at
96°C
ACTIVE
INACTIVEIn the event of a
fault, run a multiplex
network test using
the diagnostic tool
then, if the test is in
order, consult the
Protection and
Switching Unit.
12 ET021:High speed fan
assembly requestIf the coolant
temperature reaches
102°C, the low-speed
fan assembly is
activated, and is shut
down at 99°C
ACTIVE
INACTIVE

PETROL INJECTION
Fault finding - Conformity check
17B
17B-162
PETROL INJECTION
Fault finding - Conformity check
17B
17B-162V9 MR-372-J84-17B050$517.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
SUB-FUNCTION: COLD LOOP (continued 2):
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
11
Fan assemblyET022:Low speed fan
assembly requestIf the coolant
temperature reaches
98°C, the low-speed
fan unit is activated,
and is shut down at
96°C
ACTIVE
INACTIVEIn the event of a
fault, run a multiplex
network test using
the diagnostic tool
then, if the test is in
order, consult the
Protection and
Switching Unit.
12 ET021:High speed fan
assembly requestIf the coolant
temperature reaches
102°C, the low-speed
fan assembly is
activated, and is shut
down at 99°C
ACTIVE
INACTIVE