PETROL INJECTION
Fault finding - Interpretation of faults
17B
17B-116
PETROL INJECTION
Fault finding - Interpretation of faults
17B
17B-116V9 MR-372-J84-17B050$423.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
DF639
PRESENT
OR
STOREDCOMBUSTION MISFIRE IN LPG MODE
1.DEF: Destructive misfiring
2.DEF: Pollutant misfiring
3.DEF: Non-compliance with emission control standards
NOTESPriority when dealing with a number of faults:
– LPG fuel system: see 17C, LPG injection,
– ignition:
DF361 Ignition coil circuit cylinders 1-4,
DF362 Ignition coil circuit cylinders 2-3.
– flywheel signal:
DF154 Flywheel signal sensor circuit,
DF457 Engine flywheel target.
– cylinder combustion misfires:
DF059 Combustion misfire in cylinder 1,
DF060 Combustion misfire in cylinder 2,
DF061 Combustion misfire in cylinder 3,
DF062 Combustion misfire in cylinder 4.
Conditions for applying the fault finding procedure to stored faults:
The fault is considered present under the following conditions:
– there must be no further electrical faults,
– the programming must have been done, particularly the flywheel target,
– engine warm (min 75°C),
– run the engine at idle speed with all electrical consumers switched on for
approximately 15 minutes.
Special note:
– catalytic converter misfire: OBD warning light flashes when the fault is present then
is continuously lit,
– pollutant combustion misfire: OBD warning light lit continuously.
– engine unstable, loss of power and vibrations.
Check the LPG injectors.
Check the condition and conformity of the spark plugs.
Check the ignition pencil coils.
If the fault is still present, carry out the following checks:
– check the flywheel sensor,
– check the condition and cleanliness of the flywheel,
– check the flywheel sensor mounting,
– check the sensor/flywheel air gap,
– check the cylinder compressions,
– check the LPG fuel system,
– check the complete ignition system (see MR 364 or 370 Mechanics, 17A, Ignition),
– check the hydraulic tappets if there is camshaft noise (see MR 364 or 370 Mechanics, 11A, Top and front of
engine).
If the fault is still present, deal with the other faults then proceed with the conformity check.
AFTER REPAIRFollow the instructions to confirm repair.
Deal with any other faults.
Clear the stored faults.
S3000_V4C_DF639/S3000_V54_DF639
PETROL INJECTION
Fault finding - Interpretation of faults
17B
17B-117
PETROL INJECTION
Fault finding - Interpretation of faults
17B
17B-117V9 MR-372-J84-17B050$423.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
DF650
PRESENT
OR
STOREDACCELERATOR PEDAL POSITION SIGNAL
1.DEF: Inconsistency of the signal
NOTESPriority when dealing with a number of faults:
Apply the procedure for dealing with faults DF012 Sensor supply voltage no. 2,
DF012 Sensor supply voltage no. 2, DF197 Pedal sensor circuit gang 1, DF198
Pedal sensor circuit gang 2 if these are present or stored.
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present when brake and accelerator pedals are depressed
simultaneously for 30 seconds.
Special note:
–Severity 2 fault warning light illuminated,
– defect mode types 3 and 4.
1.DEF
NOTESSpecial note:
–types 2 and 3 defect modes: vehicle and engine speed
restriction, ESP and cruise control/speed limiter are
deactivated.
Check that the accelerator pedal is not jammed and that nothing is impairing its operation (floor carpet, etc.).
Check the connection and condition of the 6-track connector for the accelerator pedal potentiometer.
Repair if necessary.
Check the connection and condition of computer connector A.
Repair if necessary.
AFTER REPAIRFollow the instructions to confirm repair.
Deal with any other faults.
Clear the stored faults.
S3000_V4C_DF650/S3000_V54_DF650
PETROL INJECTION
Fault finding - Interpretation of faults
17B
17B-118
PETROL INJECTION
Fault finding - Interpretation of faults
17B
17B-118V9 MR-372-J84-17B050$423.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
DF650
CONTINUED
Disconnect the battery and the injection computer.
Check the cleanliness and condition of the connections.
Use the "Universal bornier" to check the insulation and continuity of the following connections:
Computer, connectorA, track G2 track 3 of the potentiometer gang 1
Computer, connectorA, track H2 track 4 of the potentiometer gang 1
Computer, connectorA, track H3 track 5 of the potentiometer gang 1
Computer, connectorA, track F2 track 2 of the potentiometer gang 2
Computer, connectorA, track F3 track 1 of the potentiometer gang 2
Computer, connectorA, track F4 track 6 of the potentiometer gang 2
Repair if necessary.
If the fault is still present, contact the Techline.
AFTER REPAIRFollow the instructions to confirm repair.
Deal with any other faults.
Clear the stored faults.
PETROL INJECTION
Fault finding - Interpretation of faults
17B
17B-119
PETROL INJECTION
Fault finding - Interpretation of faults
17B
17B-119V9 MR-372-J84-17B050$423.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
DF1070
PRESENT
COLD LOOP
NOTESConditions for applying fault finding procedures to stored faults:
The fault is declared present with the engine running and with a heating and air
conditioning system request.
Priorities when dealing with a combination of faults:
Deal with fault DF232 Refrigerant pressure sensor circuit first if it is present or
stored
When the fault is present or stored, the heating and air conditioning system is inhibited.
Check fuse F22 (10A) of the UPC and the condition of the air conditioning compressor connector.
If the connector is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Check the air conditioning compressor wiring.
If the wiring is faulty and there is a repair procedure (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
Manually check whether the compressor is jammed (turn the clutch plate manually to check that there is no point
of resistance). In the event of sticking, replace the air conditioning compressor (see MR 364 (Mégane II) or 370
(Scénic II), Mechanical, Heating and air conditioning system, 62A, Air conditioning, Compressor:
Removal - Refitting).
Top up with freon, check for any leaks and repair if necessary (see MR 364 (Mégane II) or 370 (Scénic II),
Mechanical, Heating and air conditioning system, 62A, Air conditioning, Refrigerant circuit: checks,
Refrigerant circuit: Draining - Filling).
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition, wait 1 minute and carry out a road test followed by another
check with the diagnostic tool.
S3000_V4C_DF1070P/S3000_V54_DF1070P
PETROL INJECTION
Fault finding - Conformity check
17B
17B-121
PETROL INJECTION
Fault finding - Conformity check
17B
17B-121V9 MR-372-J84-17B050$470.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
SUB FUNCTION: SUB-FUNCTION (TURBOCHARGING/INLET):
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
1
Air circuit
pressurePR035:Atmospheric
pressurePR035 = 1000 mb
± 100 mbIf not consistent, check
PR035 = PR312 = local
atmospheric pressure,
with the engine stopped
and ignition on.
2 PR312:Inlet manifold
vacuumPR312 = 1000 mb
± 100 mbIn the event of a fault
apply the interpretation for
PR312 Inlet manifold
vacuum.
3 Engine speed PR055:Engine speedIndicates the engine's
speed of rotation in
rpm.
PR055 = 0 rpmIn the event of a fault,
apply the interpretation for
DF154 Flywheel signal
sensor circuit.
4
Idle speedET054:Idle speed
regulationINACTIVE None
5 PR010:Idle speed
regulation
setting700 < X < 750 rpm
Indicates the speed of
rotation setpoint before
last engine stop in rpm.None
6Air
temperaturePR058:Air
temperature- 40°C < PR058 < 120°C
Default value: 120°CIn the event of a fault,
apply the interpretation of
DF002 Air temperature
sensor circuit.
7 Coolant
temperaturePR064:Coolant
temperature- 40°C < PR064 < 120°C
Default value: - 39°CIn the event of a fault,
apply the interpretation of
DF001 Coolant
temperature sensor
circuit.
PETROL INJECTION
Fault finding - Conformity check
17B
17B-122
PETROL INJECTION
Fault finding - Conformity check
17B
17B-122V9 MR-372-J84-17B050$470.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
SUB FUNCTION: (TURBO/INLET) (continued):
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
8 Air flow PR018:Estimated air
flowIndicates the air flow
value estimated by the
motorised throttle
valve.
PR018= 0kg/hIf there is a fault, apply the
interpretation of faults
DF095 Throttle
potentiometer circuit
gang 1 and DF096
Throttle potentiometer
circuit gang 2.
9
Camshaft
dephaser (Only
on K4M
engines)ET083:Camshaft
dephaser in
defect modeSTATUS 1: This defect
mode covers all faults
that affect the dephaser
position measurement.
The dephaser is set to the
lower stop and the
camshaft angle
measurement is forced
to 0. Tooth signal fault.
STATUS 2: This defect
mode covers all faults
that affect the dephaser
(pulley and solenoid
valve). The dephaser is
set to the low stop.
NOFor STATUS 1, carry out
a camshaft signal/tooth
consistency diagnostic.
For STATUS 2, carry out
fault finding on the
camshaft dephaser
position.
10 PR094:Camshaft
dephaser OCR
setpointShows required camshaft
offset value (in %).
PR094 = 0%
WITHOUT
11 ET086:Camshaft
dephaser
controlACTIVE
INACTIVE
12electric coolant
pumpAC195:Electric coolant
pumpThe pump should be
heard operatingIn the event of a fault,
apply interpretation of
DF570 Coolant pump
relay.
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-136
PETROL INJECTION
Fault finding - Conformity check
17B
17B-136V9 MR-372-J84-17B050$470.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
COLD LOOP SUB-FUNCTION:
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
1
Air conditioningET079:Air conditioning
presentShows whether or not
the vehicle is equipped
with air conditioning.
YES: Air conditioning is
detected by the injection
computer.
NO: Air conditioning is not
detected by the injection
computer.If inconsistent with
the vehicle
equipment, carry out
a multiplex network
test and apply the
relevant procedure.
2 ET088:Compressor
actuation
requestThe injection requests
the UCH (via the
multiplex network) to
start the compressor.
ACTIVE: The multiplex
network must not be faulty
on the automatic gearbox
or UCH systems. The
UCH must send a
compressor starting
request to the injection.
The coolant pressure
sensor must not be
defective. Satisfactory
engine operating
conditions (coolant
temperature, engine load,
etc.).
INACTIVE: One of the
above conditions has not
been met.WITHOUT
3 ET004:Air conditioning
authorisationYES
NO