2010 RENAULT SCENIC fuel consumption

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-125
PETROL INJECTION
Fault finding - Conformity check
17B
17B-125V9 MR-372-J84-17B050$470.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
FUEL CIRCUIT SUB-FUNCTION (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
6
RichnessPR138:Richness correctionIn loop mode, the
richness correction
corrects the injection
duration to obtain a
fuel mixture as close
as possible to a
richness of 1. The
richness correction
value varies around
50 between 0 and
100.
0 7 ET300:Richness regulationINACTIVE WITHOUT
8ET056:Richness double loopINACTIVEIn the event of a fault,
apply the
interpretation of
ET056 Double
richness loop.
9
Oxygen sensorPR144:Self-adapting
richness offset0 This parameter is
used to detect any
tendency of the
injection system to
increase or decrease
the richness.
WITHOUT
10 PR143:Self-adapting
richness gain0 This parameter is
used to detect any
tendency of the
injection system to
increase or decrease
the richness.
11 Injection PR101:Duration of injection0µs
12Fuel
consumption.PR103:Instantaneous fuel
consumptionPR103 = 0 l/h

PETROL INJECTION
Fault finding - Conformity check
17B
17B-149
PETROL INJECTION
Fault finding - Conformity check
17B
17B-149V9 MR-372-J84-17B050$517.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
FUEL CIRCUIT SUB-FUNCTION (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
7
RichnessPR138:Richness correctionIn loop mode, the
richness correction
corrects the injection
duration to obtain a
fuel mixture as close
as possible to a
richness of 1. The
richness correction
value varies around
50 between 0 and
100.
0 8ET300:Richness regulationACTIVE
INACTIVEWITHOUT
9ET056:Richness double loopACTIVEIn the event of a fault,
apply the
interpretation of
ET056 Double
richness loop.
10
RichnessPR144:Self-adapting
richness offsetPR624≈ 128
This parameter is
used to detect any
tendency of the
injection system to
increase or decrease
the richness.
WITHOUT
11 PR143:Self-adapting
richness gainPR625≈ 128
This parameter is
used to detect any
tendency of the
injection system to
increase or decrease
the richness.
12 Injection PR101:Duration of injectionIdling
2.4 µs < PR101
<4.3µs
13Fuel
consumption.PR103:Instantaneous fuel
consumption0 l/h < PR103 < 50 l/h

PETROL INJECTION
17B
17B - 202
17B
17B - 202V9 MR-372-J84-17B050$658.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54PETROL INJECTION
Fault finding - Parameter summary table
* OCR: Opening Cycle Ratio
* appli.: applicationTool parameter Diagnostic tool title
PR010Idling speed regulation setpoint
PR014Idling speed correction
PR018Estimated air flow
PR030Accelerator pedal position
PR035Atmospheric pressure
PR037Refrigerant pressure
PR055Engine speed
PR058Air temperature
PR064Coolant temperature
PR074Battery voltage
PR089Vehicle speed
PR090Idling speed regulation programming value
PR091OCR* Theoretical idle speed regulation
PR093Camshaft dephaser measured position
PR095Anti-pinking correction
PR096Motorised throttle upper stop programmed value
PR097Motorised throttle lower stop programmed value
PR098Upstream oxygen sensor voltage
PR099Downstream oxygen sensor voltage
PR101Duration of injection
PR102Canister bleed solenoid valve OCR*
PR103Instantaneous fuel consumption
PR105OBD fault warning light lit mileage counter
PR106Mileage counter fault warning light lit
PR111Motorised throttle position corrected value
PR113Throttle lower stop after offset appli.*
PR116Motorised throttle corrected position setpoint
MR-372-J84-17B050$658.mif

PETROL INJECTION
Fault finding - Interpretation of parameters
17B
17B - 211
PETROL INJECTION
Fault finding - Interpretation of parameters
17B
17B - 211V9 MR-372-J84-17B050$705.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
PR099
CONTINUED
Replace the downstream oxygen sensor.
If the fault is still present, the catalytic converter is certainly damaged.
If the catalytic converter is defective, determine the cause of the destruction, otherwise the new catalytic
converter may be damaged in turn.
Remove the catalytic converter.
Various things may destroy a catalytic converter:
–deformation (impact),
–thermal shock (cold water splashed onto a hot catalytic converter can damage it),
–defective injector or ignition: the catalytic converter is damaged by contact with fuel (coil fault, coil control fault,
injector jammed open),
–injector leak,
–abnormal oil or coolant consumption (defective cylinder head gasket),
–use of a fuel additive or other equivalent product (obtain information from the customer because this type of
product can contaminate the catalytic converter and render it useless sooner or later).
Look up the service history of the vehicle or, if this is not possible, ask the customer if the vehicle has had injection
or ignition faults.
If the cause of the catalytic converter damage has been found and the fault has disappeared, replace the
catalytic converter.
AFTER REPAIRRepeat the conformity check from the start.