2011 RENAULT SCENIC engine overheat

13B-172
MR-372-J84-13B200$504.mif
V13
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5CDIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET021
HIGH-SPEED FAN REQUEST
STATUS DEFINITIONRUNNING: this status indicates that the high-speed fan assembly has been requested.
STOPPED: this status indicates that the high-speed fan assembly has not been
requested.
NOTESSpecial notes:
Only perform these tests if the statuses do not correspond with the system
programming functions.
NOTE:
Statuses ET021 and ET015 Fan assembly 2 check change status simultaneously.
Conformity check with the engine stopped and the ignition on, or engine running, and engine coolant
temperature > 80°C
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 becomes ACTIVE and status ET015 Fan assembly 2 check becomes
RUNNING.
Conformity check with engine stopped and ignition on
INACTIVEThe high-speed 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.
IMPORTANT!WA R N I N G
If the Protection and Switching Unit (Vdiag 18, 1C, 20 only) no longer detects the injection
computer signals, the low-speed fan assembly is supplied until the battery is completely
discharged.
If the low-speed fan assembly is defective, the high-speed fan assembly will be activated.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16_V50_ET021/EDC16_V58_ET021/EDC16_V5C_ET021/EDC16_V18_ET021/EDC16_V1C_ET021/EDC16_V20_ET021

13B-173
MR-372-J84-13B200$504.mif
V13
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5CDIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET022
LOW SPEED GMV CONTROL
STATUS DEFINITIONRUNNING, this status indicates that the high-speed fan assembly has been requested.
STOPPED, this status indicates that the high-speed fan assembly has not been
requested.
NOTESSpecial notes:
Only perform these tests if the statuses do not correspond with the system
programming functions.
NOTE:
Statuses ET022 and ET014 Fan assembly 1 check change status simultaneously.
Conformity check with the engine stopped and the ignition on, or engine running, and engine coolant
temperature > 80°C
ACTIVE
The injection computer requests the activation of the low speed GMV when:
– the engine coolant temperature is greater than 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 becomes ACTIVE,
–status ET014 Fan assembly 1 check becomes RUNNING.
Conformity check with engine stopped and ignition on
INACTIVEThe low-speed 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 requested by the driver
IMPORTANT!WARNING
If the Protection and Switching Unit (Vdiag 18, 1C, 20 only) no longer detects the injection
computer signals, the low-speed fan assembly is supplied until the battery is completely
discharged.
If the low-speed fan assembly is defective, the high-speed fan assembly will be activated.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16_V50_ET022/EDC16_V58_ET022/EDC16_V5C_ET022/EDC16_V18_ET022/EDC16_V1C_ET022/EDC16_V20_ET022

13B-319
MR-372-J84-13B200$828.mif
V13
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5CDIESEL INJECTION
Fault finding – Fault Finding Chart13B
ALP 2 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 eliminated, perform the following checks.
Is it difficult or impossible to start the engine?
PART A:
Check the engine earths.
Ensure that the 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.
If the engine speed shown on CLIP is zero and the engine is running, check the resistance of the engine speed
sensor between connections 3BG and 3BL of component 149:
Replace the sensor if its resistance is not 510 Ω < X < 850 Ω at 20°C
Check the continuity of the following connections:
– connection codes 3BG and 3BL between components 120 and 149.
Check the conformity of the engine earths (oxidation, tightness, etc.).
Check the mounting, the gap (if necessary refer to the information in the workshop repair manual for the vehicle) and
the condition of the sensor (overheating).
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, step 4.
Check that the heater plugs are actuated using the AC001 Preheating unit command.
Check the sealing and condition of the inlet circuit: run Test 4 Turbocharged air inlet circuit check and follow the
associated fault finding procedure.
Check that there are no foreign bodies on the flowmeter grille: run Test 5 Air flowmeter and follow the associated
fault finding procedure.
Check the position of the exhaust gas recirculation valve.
Check that the exhaust is not blocked: run Test 1 Exhaust pipe check and follow the associated fault finding
procedure.
Check the consistency of the signal from the engine coolant temperature sensor.
Check the operation of the pressure regulator (see AC011 Rail pressure regulator).
Check the operation of the injectors (excessive return leak, clogging, seizing): run Test 9 Poor injector operation.
Check the engine timing (and the position of the high pressure pump sprocket).
Check the balance of the compressions, according to the power consumption during the starting phase
(Compression test menu on the CLIP Technic tool or using a compression gauge)
after the operation, clear the faults caused by disconnecting the regulator and the heater plugs.
End of part AImpossible
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
EDC16_V50_ALP2/EDC16_V58_ALP2/EDC16_V5C_ALP2/EDC16_V18_ALP2/EDC16_V1C_ALP2/EDC16_V20_ALP2

13B-322
MR-372-J84-13B200$828.mif
V13
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5CDIESEL INJECTION
Fault finding – Fault Finding Chart13B
ALP 4 Poor performance
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 eliminated, perform the following checks.
IMPORTANT
In the event of the engine overheating above 119°C, the computer deliberately limits the fuel flow (warning light is
illuminated when temperature exceeds 115 ° C).
Please observe the cleanliness guidelines and safety advice.
is the engine running on all
cylinders?
NO
Check:
– Check the conformity of the fuel used by running Test 11 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
for the presence of the washer.
– Clean the injector well and the injector, refit the injector with its correct sealing washer.
– The sealing and condition of the inlet circuit, run Test 4 Turbocharged air inlet circuit check.
– The condition of the air flowmeter, run Test 5 Air flowmeter.
Check the turbocharger:
–Run Test 2 Air line at the turbocharger.
–Run Test 6 Turbocharger control solenoid valve check.
–Run Test 7 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.
YES
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
EDC16_V50_ALP4/EDC16_V58_ALP4/EDC16_V5C_ALP4/EDC16_V18_ALP4/EDC16_V1C_ALP4/EDC16_V20_ALP4