engine overheat RENAULT SCENIC 2009 J84 / 2.G Engine And Peripherals EDC16 Workshop Manual
[x] Cancel search | Manufacturer: RENAULT, Model Year: 2009, Model line: SCENIC, Model: RENAULT SCENIC 2009 J84 / 2.GPages: 273
Page 12 of 273
DIESEL INJECTION
Fault finding – System operation13B
13B - 12V3 MR-372-J84-13B250$135.mif
EDC16
PROGRAM No: C1
Vdiag No.: 51
c) Hosted functions:
Air conditioning management assistance:
In the case of vehicles with climate control, the EDC16 system has the option of deactivating the air conditioning via
the UCH, under certain conditions of use:
–when requested by the driver,
–when starting the engine,
–if the engine overheats (in order to reduce the power the engine has to supply),
–when the engine speed is kept at a very high level (to protect the compressor),
–during transitory phases (such as demands for high acceleration when overtaking, anti-stall and start-up) These
conditions are only taken into account when they do not occur repeatedly, to prevent instability in the system
(erratic deactivations),
–when certain faults appear.
Cold loop air conditioning management:
The air conditioning is the cold loop type and its management shared between several computers.
The injection computer is responsible for:
–authorising cold requests according to the refrigerant pressure, the engine coolant temperature and the engine
speed,
–calculating the power absorbed by the compressor (from the refrigerant pressure),
–requesting operation of the GMV, from the UPC, according to the vehicle speed, the refrigerant pressure and the
engine coolant temperature.
The driver requests the air conditioning to be switched on by means of the ventilation selector coupled to a switch.
The cold air request is authorised or denied depending on the pressure measured. If this pressure is outside the
operating limits, the cold loop program is not activated.
Management of the damper valve:
The damper valve currently has three functions:
–the valve closes in order to block the passage of air towards the cylinders to shut off the engine. The aim of this is
to stop the engine as quickly as possible and to reduce instabilities as the engine is switched off.
–"valving" function depending on the engine operation: the damper valve closes by a few % to create a ''venturi''
effect at the EGR valve passage section.
The aim of this is to accelerate the air flow of EGR gases and to reduce the emission of pollutants.
Page 14 of 273
DIESEL INJECTION
Fault finding – System operation13B
13B - 14V3 MR-372-J84-13B250$135.mif
EDC16
PROGRAM No: C1
Vdiag No.: 51
Exhaust gas recirculation management
The exhaust gas recirculation system comprises a direct current EGR valve controlled by an H bridge in the
computer. This system has a built-in valve position feedback potentiometer.
The EGR valve is controlled in a closed loop on the change in the air flow measured by the flow sensor.
The potentiometer is used in the fault finding procedure for the EGR valve position.
Warning light management:
Instrument panel display
The computer manages the data display on the instrument panel relating to engine operation. This involves six
functions:
–the pre-postheating warning light,
–the coolant temperature warning light or warning message;
–the fault level 1 warning light (non-critical fault),
–the fault level 2 warning light (emergency stop),
–the OBD warning light (European On Board Diagnostic).
These five functions are represented by 4 or 5 warning lights and/or messages sent by the trip computer.
A 3 second visual inspection is carried out by the injection computer when ignition is switched on (automatic
procedure for test managed by the instrument panel).
Orange Pre-post heating/non-critical fault SERVICE warning light (level 1)
This light is used both as an in-operation indicator light and as a system fault indicator:
–Continuously lit with + after ignition feed:
Indicates preheating of the spark plugs.
–Continuous lighting accompanied by the message CHECK INJECTION or ELECTRONIC FAULT:
Indicates a level 1 fault (implies operation in injection system defect mode).
The driver should carry out repairs as soon as possible.
Temperature warning light/red EMERGENCY STOP (level 2)
This indicator light is used both as an in-operation indicator light and as a system fault warning light. Lights up for
3 seconds when the ignition is switched on (automatic test procedure managed by the instrument panel):
–Continuously lit or alternately lit with ENGINE OVERHEATING message:
Indicates engine overheating (the driver is free to choose whether or not to stop the vehicle).
–Continuously lit with the FAULTY INJECTION message:
Indicates a level 2 fault (In this case, the injection is automatically cut after a few seconds).
The driver should carry out repairs as soon as possible.
ORANGE OBD excess pollution warning light
An engine symbol accompanied by the message CHECK EMISSION CONTROL.
This warning light comes on if the system has one or more OBD faults.
This warning light is used to warn the driver of injection faults leading to excessive pollution or that the EOBD* system
has been deactivated.
The injection computer requests activation of the OBD warning light for a present fault only after three successive
driving cycles.
A 3 second visual inspection is carried out by the injection computer when ignition is switched on (automatic
procedure for test managed by the instrument panel).
*EOBD: Electronic on board diagnostics.
Page 26 of 273
DIESEL INJECTION
Fault finding – Fault summary table13B
13B-26V3 MR-372-J84-13B250$270.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51DIESEL INJECTION
Fault finding – Fault summary table
WARNING LIGHT MANAGEMENT:
Management of instrument panel warning lights according to the faults notified.
Tool
faultDIAGNOSTIC
TOOL
DESCRIPTIONAssociated
DTCLEVEL 1
FAULT
WARNING
LIGHT
(Orange
heater plugs
On indicator
light)LEVEL 2
FAULT
WARNING
LIGHT (Red
overheating
warning
light)NO FAULT
WARNING
LIGHT ONOBD
WARNING
LIGHT ON
DF001Coolant
temperature sensor
circuit115 CO.1/CC.0 ... ... CO.1/CC.0
DF003Atmospheric
pressure sensor
circuit1051.DEF/
2.DEF/3.DEF... ...1.DEF/
2.DEF/
3.DEF
DF004Turbocharging
pressure sensor
circuit235CO.0/CC.1/
1.DEF... ... ...
DF005Engine speed
sensor circuit335 ...1.DEF/
2.DEF... ...
DF007Rail pressure
sensor circuit190 ...CO.1/CC.0/
1.DEF... ...
DF008Pedal
potentiometer
circuit gang 1225CO.0/CC.1/
1.DEF... 2.DEF ...
DF009Pedal
potentiometer gang
2 circuit2120CO.0/CC.1/
1.DEF... ... ...
DF011Sensor supply
voltage no. 1641 1.DEF/2.DEF ... ...1.DEF/
2.DEF
DF012Sensor feed voltage
no. 2651 1.DEF/2.DEF ... ...1.DEF/
2.DEF
DF013Sensor supply
voltage no. 3697 ...1.DEF/
2.DEF...1.DEF/
2.DEF
DF015Main relay control
circuit685 1.DEF/2.DEF ... ... ...
DF017Pre-postheating
unit control circuit380CC.0/CC.1 /
CO /1.DEF... ... ...
DF025Pre-postheating
unit diagnostic line670 X ... ... ...
DF037Engine immobiliser C167 ... X ... ...
Page 28 of 273
DIESEL INJECTION
Fault finding – Fault summary table13B
13B-28V3 MR-372-J84-13B250$270.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
Tool
faultDIAGNOSTIC
TOOL
DESCRIPTIONAssociated
DTCLEVEL 1 FAULT
WARNING
LIGHT (Orange
heater plugs On
indicator light)LEVEL 2 FAULT
WARNING
LIGHT (Red
overheating
warning light)NO
FAULT
WARNING
LIGHT ONOBD
WARNING
LIGHT ON
DF055Turbocharging
pressure
regulation circuit243 1.DEF/2.DEF ... ... ..
DF056Air flow sensor
circuit100CO.0/CC.1/
1.DEF/2.DEF... ...CO.0/CC.1/
1.DEF/
2.DEF
DF057Water in diesel
fuel detector
circuit2264 ... ... X ...
DF059Misfiring on
cylinder 1301 ... ... X ...
DF060Misfiring on
cylinder 2302 ... ... X ...
DF061Misfiring on
cylinder 3303 ... ... X ...
DF062Misfiring on
cylinder 4304 ... ... X ...
DF069Impact detected
signal1620 ... 1.DEF ... ...
DF070Clutch switch
circuit830 ... ...1.DEF/
2.DEF...
DF086Coolant pump
relay control
circuit2600 CO.0/CC.1 ... ... ...
DF091Vehicle speed
signal500 ... ...1.DEF/
2.DEF
3.DEF/
4.DEF ...
DF097Camshaft sensor
circuit340 1.DEF/2.DEF ... ... ...
DF118EGR solenoid
valve servo-
control409 2.DEF ... 1.DEF ...
DF195Camshaft/engine
speed sensor
consistency16 1.DEF ... ... ...
DF209EGR valve
position sensor
circuit486 ... ...CO.0/
CC.1/
1.DEFCO.0/CC.1/
1.DEF
Page 176 of 273
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
13B - 176V3 MR-372-J84-13B250$630.mif
EDC16
PROGRAM NO.: C1
Vdiag No.: 51
ET014
CHECK COOLING FAN 1
NOTESSpecial notes:
Only perform these tests if the statuses do not correspond with the system
programming functions.
NOTE:
Status ET014 test and status ET022 GMV1 low speed request change their status at the same time.
RUNNING
The low-speed engine fan unit is supplied in three scenarios:
–the engine coolant temperature is above 89 ˚C;
–the air conditioning is operating
–the injection computer has system faults that could lead to the engine overheating.
When the low-speed engine fan is supplied:
–status ET014 GMV 1 test becomes RUNNING status ET022 Low speed GMV
request becomes ACTIVE.
If the low speed GMV does not work (see 87G, engine compartment connection unit).
The low-speed engine fan assembly stops when:
–the engine coolant temperature is below 89 ˚C;
–the air conditioning is not switched on by the driver.
STOPPED
IMPORTANTWARNING
If the UPC does not detect the injection computer frames, the low speed engine
fan is supplied until the battery is completely discharged.
In the event that the low-speed engine fan assembly is faulty, the high-speed
engine fan assembly will then be activated.
AFTER REPAIRCarry out a road test followed by a complete test with the diagnostic tool.
EDC16_V51_ET014
Page 177 of 273
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
13B - 177V3 MR-372-J84-13B250$630.mif
STOPPED
EDC16
PROGRAM NO.: C1
Vdiag No.: 51
ET015
CHECK COOLING FAN 2
NOTESSpecial notes:
Only perform these tests if the statuses do not correspond with the system
programming functions.
NOTE:
Status ET015 GMV 2 test and status ET021 High speed GMV request change their status at the same time.
RUNNING
The engine fan assembly can be supplied when:
–the engine coolant temperature is above 99 ˚C.
–the injection computer has system faults that could lead to the engine overheating.
When the high speed fan is supplied:
–status ET015 GMV 2 test becomes RUNNING and status ET021 High speed GMV
request becomes ACTIVE.
The high-speed engine fan assembly stops when:
–the engine coolant temperature is below 99 ˚C;
IMPORTANTWARNING
If the UPC does not detect the injection computer frames, the low speed engine
fan is supplied until the battery is completely discharged.
In the event that the low-speed engine fan assembly is faulty, the high-speed
engine fan assembly will then be activated.
AFTER REPAIRCarry out a road test followed by a complete test with the diagnostic tool.
EDC16_V51_ET015
Page 178 of 273
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
13B - 178V3 MR-372-J84-13B250$630.mif
INACTIVE
EDC16
PROGRAM NO.: C1
Vdiag No.: 51
ET021
HIGH-SPEED FAN REQUEST
NOTESSpecial notes:
Only perform these tests if the statuses do not correspond with the system
programming functions.
NOTE:
Status ET021 High speed GMV request and status ET015 GMV 2 test change their status at the same time.
ACTIVE
The injection computer requests the activation of the high speed GMV when:
–the engine coolant temperature is above 99 ˚C.
–the injection computer has system faults that could lead to the engine overheating.
When the high speed fan is supplied:
–status ET021 High speed GMV request becomes RUNNING and status ET015
GMV 2 test becomes ACTIVE.
The high-speed engine fan assembly stops when:
–the engine coolant temperature is below 99 ˚C;
–no fault which could cause engine overheating is present in the injection
system.
IMPORTANTWARNING
If the UPC does not detect the injection computer frames, the low speed engine
fan is supplied until the battery is completely discharged.
In the event that the low-speed engine fan assembly is faulty, the high-speed
engine fan assembly will then be activated.
AFTER REPAIRCarry out a road test followed by a complete test with the diagnostic tool.
EDC16_V51_ET021
Page 179 of 273
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
13B - 179V3 MR-372-J84-13B250$630.mif
INACTIVE
EDC16
PROGRAM NO.: C1
Vdiag No.: 51
ET022
LOW SPEED GMV CONTROL
NOTESSpecial notes:
Only perform these tests if the statuses do not correspond with the system
programming functions.
NOTE:
Status ET022 Low speed GMV request and status ET014 GMV 1 test change their status at the same time.
ACTIVE
The injection computer requests the activation of the low speed GMV when:
–the engine coolant temperature is above 89 ˚C;
–the injection computer has system faults that could lead to the engine overheating,
–the air conditioning is switched on by the driver.
When the high speed fan is supplied:
–status ET022 Low speed GMV request becomes ACTIVE and status ET014 GMV
1 test becomes RUNNING.
The low-speed engine fan assembly stops when:
–the engine coolant temperature is below 89 ˚C;
–no fault which could cause engine overheating is present in the injection
system.
–the air conditioning is not switched on by the driver.
IMPORTANTWARNING
If the UPC does not detect the injection computer frames, the low speed engine
fan is supplied until the battery is completely discharged.
In the event that the low-speed engine fan assembly is faulty, the high-speed
engine fan assembly will then be activated.
AFTER REPAIRCarry out a road test followed by a complete test with the diagnostic tool.
EDC16_V51_ET022
Page 224 of 273
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
13B -224V3 MR-372-J84-13B250$855.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
ALP2 starting difficult or impossible
NOTESBefore dealing with this customer complaint, check that there are no faults, and
the conformity (or otherwise) of the parameters and statuses using the
diagnostic tool.
If the customer complaint is not ironed out, perform the following checks:
Is it difficult or impossible to start the engine?impossible(Go to
continued 2)
difficult
PART A:
Check the engine earths.
Ensure that engine speed reaches 250 rpm with the starter motor, as displayed on the parameter screen
(PR055 Engine speed).
If the engine speed is less than 250 rpm, refer to Technical Note 6014A, Checking the charging circuit, Starter
motor fault finding, Starter motor.
If the engine speed under CLIP is zero and the engine is running, measure the resistance of the engine speed
sensor between terminals A and B of its black connector. If the winding resistance is not between 510 Ω and
850 Ω at an engine temperature of 20˚C, replace the engine speed sensor.
Check the continuity of the following connections:
–engine computer, connector B track D1 track A of the engine speed sensor
–engine computer, connector B track C1 track B of the engine speed sensor
Check that the engine earthing is in order (oxidation, tightness, etc.).
Check the mounting, air gap and condition (overheating) of the sensor.
Replace if necessary.
Check the synchronisation of the camshaft sensors and the engine speed sensors with the display of ET238
Synchronisation.
If synchronisation is not active, refer to the checks described in DF195 Camshaft/engine speed consistency.
check the fuel circuit sealing.
If the fault is still present, see DF053 Rail pressure regulation function 2.def, stage 4.
AFTER REPAIRcarry out a road test followed by a complete check with the diagnostic tool.
EDC16_V51_ALP2
Page 228 of 273
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
13B -228V3 MR-372-J84-13B250$855.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
ALP4 Poor performance
NOTESBefore analysing this customer complaint, check that there are no faults, and the
conformity (or otherwise) of the parameters and statuses, using the diagnostic
tool.
If the customer complaint is not ironed out, perform the following checks:
IMPORTANT
In the event of the engine overheating above 119˚C, the computer will voluntarily limit the fuel flow
(overheating warning light comes on from 115˚C).
–Please observe the cleanliness guidelines and safety advice.
Is the poor performance accompanied by smoke?
YES
Check:
–The conformity of the fuel used: apply test 10 Diesel fuel conformity check.
If the diesel fuel is not correct: – Replace the diesel fuel.
–Change the diesel filter.
–Bleed the low and high pressure diesel circuit.
–The conformity of the assembly of the injectors (presence and conformity of the sealing washer).
Checking procedure:
–Take a straightedge approximately 40 cm long and place it on the 4 injectors. The straightedge should rest on
the 4 injectors.
–If 1 injector protrudes, remove the injector and check that the washer is correct.
–If one injector does not touch the straightedge (clearance of more than 1 mm), remove the injector and check
that the washer is present.
–Clean the injector well and the injector, refit the injector with its correct sealing washer.
The sealing and condition of the inlet circuit: apply test 3 Turbocharged air inlet circuit check.
–The condition of the air flowmeter: apply test 4 Air flowmeter.
–The turbocharger: apply test 9 Air line at the turbocharger, then test 5 Turbocharger control solenoid valve
check and test 6 Turbocharger.
check that the turbocharging pressure follows the increase in engine speed and that the loop difference with the
turbocharging pressure is low.
Otherwise, replace the turbocharger.
NO
AFTER REPAIRcarry out a road test followed by a complete check with the diagnostic tool.
EDC16_V51_ALP4