air condition RENAULT SCENIC 2009 J84 / 2.G Engine And Peripherals EDC16 Workshop Manual

DIESEL INJECTION
Fault finding – Interpretation of commands13B
13B -209V3 MR-372-J84-13B250$765.mif
EDC16
PROGRAM No: C1
Vdiag No.: 51DIESEL INJECTION
Fault finding – Interpretation of commands
SC001
WRITE SAVED DATA
NOTESAll data must be saved with command SC003 SAVE COMPUTER DATA for this
command to be run.
Writing is carried out after the computer has been reprogrammed or replaced.
Validating this command writes the data saved using command SC003 SAVE COMPUTER DATA.
The data is as follows:
–vehicle idle speed,
–injector calibration codes (if the vehicle is fitted with IMA),
–programming of exhaust gas recirculation valve data,
–options available on the vehicle and managed by the computer (E.g. air conditioning).
This data configures the computer and prevents:
–engine malfunction after reprogramming or replacing the computer,
–incorrect interpretation of the information provided by the CLIP diagnostic tool.
EDC16_V51_SC001

DIESEL INJECTION
Fault finding – Interpretation of commands13B
13B-211V3 MR-372-J84-13B250$765.mif
EDC16
PROGRAM No: C1
Vdiag No.: 51
SC003
SAVE COMPUTER DATA
NOTESThe data is saved before computer reprogramming or the computer is replaced.
On the CLIP tool, select the SC003 Save computer data.
If the following message appears:
"a saved file exists, do you want to overwrite this data?"
(this file corresponds to the last save carried out on the tool)
Select YES.
Confirming this command saves the following vehicle-specific data:
–injector codes,
–the EGR valve data programming;
–options available on the vehicle and managed by the computer (E.g. air conditioning).
This information will be saved on the CLIP tool.
After saving has finished, use the command SC001 Enter saved data to be able to set the new computer
parameters, after programming and reprogramming.
EDC16_V51_SC003

DIESEL INJECTION
Fault finding – Interpretation of commands13B
13B -213V3 MR-372-J84-13B250$765.mif
EDC16
PROGRAM No: C1
Vdiag No.: 51
RZ005
PROGRAMMING
NOTESThis command enables you to reinitialise the entire computer configuration according
to the vehicle.
Command RZ005 reconfigures the computer.
If the computer does not have any configuration data, use command RZ005 to enter the vehicle options:
–air conditioning,
–thermoplungers,
–cruise control/speed limiter.
These options are detected by the computer even if command RZ005 is not used.
The computer is configured as soon as the one of the vehicle's optional system components is operated.
EDC16_V51_RZ005

DIESEL INJECTION
Fault finding – Interpretation of commands13B
13B -215V3 MR-372-J84-13B250$765.mif
EDC16
PROGRAM No: C1
Vdiag No.: 51
AC001
PREHEATING UNIT
NOTESThis command is only carried out if the fault DF025 Preheating unit fault finding
connection, or DF017 Preheating unit control circuit is present or stored and if no
other fault is present.
Refer to the Wiring diagrams Technical Note for the vehicle to locate the fuses and
relays concerned.
Connect the diagnostic tool and turn on the ignition.
With the preheating unit connected:
–connect the negative terminal of the voltmeter to track 8 of the preheating unit,
–connect the positive terminal of the voltmeter to the + 12 V battery,
–run command AC001 Preheating unit.
if the voltmeter does not indicate the battery voltage while the command is running (ten 1 second ON/OFF cycles):
1Check the condition of the preheating unit supply fuse F01 (70A).
Replace it if necessary.
2Check the following connections for continuity and the absence of interference resistance:
Injection computer connector C track E2 track 8 of the preheating unit connector
Injection computer connector C track A4 Track 3 of the preheating unit connector
Repair if necessary.
3Check the connections on the pre-postheating unit, heater plugs and injection computer.
Repair if necessary.
4Measure the resistance of the heater plugs. If this resistance is greater than 2 Ω replace the faulty plug(s).
5Check the continuity and absence of interference resistance between:
preheating unit track 1 cylinder 3 heater plug
preheating unit track 2 cylinder 1 heater plug
preheating unit track 6 cylinder 4 heater plug
preheating unit track 7 cylinder 2 heater plug.
6Then check for + 12 V supply on track 4 of the preheating relay connector.
If the fault is still present, replace the preheating unit.
EDC16_V51_AC001

DIESEL INJECTION
Fault finding – Interpretation of commands13B
13B -219V3 MR-372-J84-13B250$765.mif
EDC16
PROGRAM No: C1
Vdiag No.: 51
AC011
CONTINUED
Step 2
In the event of rail overpressure:
Check the injectors are working:
see test 8 Incorrect injector operation.
Check that the rail pressure sensor is operating correctly:
Fault interpretation DF007 RAIL PRESSURE SENSOR CIRCUIT.
Carry out the necessary repairs.
If these checks do not reveal any faults, and if the fault is still present, replace the rail pressure sensor.
In the event of rail underpressure:
Check that the rail pressure sensor is operating correctly:
Fault interpretation DF007 RAIL PRESSURE SENSOR CIRCUIT.
Check the low pressure diesel circuit priming.
Check the conformity of the diesel filter connections.
Check the condition of the filter (clogging and water saturation).
Check there are no air bubbles between the filter and the high pressure pump.
Check the sealing of the high pressure and low pressure diesel circuit.
(odour and visual inspections): pump body, overpressure valve, pipes, rail and injector unions, injector wells.
Check the conformity of the seal fitting on the pressure regulator.
Check the injectors are working:
see test 8 Incorrect injector operation.
Carry out the necessary repairs.
If these checks do not reveal any faults, and if the fault is still present, replace the rail pressure sensor.

DIESEL INJECTION
Fault finding – Fault Finding Chart13B
13B -223V3 MR-372-J84-13B250$855.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51DIESEL INJECTION
Fault finding – Fault Finding Chart
ALP1 No dialogue with engine management computer
Try to establish dialogue with a computer on another vehicle to make sure that the diagnostic tool is not faulty.
Check the battery voltage and make the necessary adjustments to obtain a correct voltage (9.5 V < Battery
voltage < 17.5 V).
If the tool is not at fault, and dialogue cannot be established with any other computer on the same vehicle, the cause
could be a faulty computer interfering on the multiplex network.
disconnect the engine management computer.
try to establish dialogue with another computer.
if the fault is still present, reconnect the computer and proceed by elimination by successively disconnecting all the
following computers (according to wiring diagram and equipment): air conditioning, airbag, abs and esp, uch,
instrument panel, central communication unit, proximity sensor.
Try to establish dialogue after disconnecting each line:
if, after a disconnection, you manage to establish dialogue, perform the fault finding procedure for the relevant
computer.
perform fault finding on the multiplex network using the diagnostic tool.
Check for the presence and the condition of the injection fuses on the UPC, and/or the engine fuse box.
check the connection of the computer connectors and the condition of its connections.
Check the injection computer earths (quality, oxidation, earth bolts secure on the battery terminal).
Check that the supply to the computer is correct:
Earth on tracks H1, G4 and H4 of black 32-track connector A.
+ after ignition feed on track D1 of black 32 track connector A.
Check that the power supply to the diagnostic socket is correct:
+ before ignition feed on track 16.
+ after ignition feed on track 1.
Earth on tracks 4 and 5.
If dialogue has still not been established after these checks, contact the techline.
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
EDC16_V51_ALP1

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

DIESEL INJECTION
Fault finding – Fault Finding Chart13B
13B -225V3 MR-372-J84-13B250$855.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
ALP2
CONTINUED 1
Check that the heater plugs are actuated using the AC001 Preheating unit command.
Check the sealing and condition of the inlet circuit: run test 3 Turbocharged air inlet circuit check and follow the
fault finding procedure.
Check that there are no foreign bodies on the flowmeter grille: run test 4 Air flowmeter and follow the fault finding
procedure.
Check that the exhaust is not blocked: run test 1 Exhaust pipe check and follow the related fault finding
procedure.
Check the consistency of the signal from the engine coolant temperature sensor.
Check the pressure regulator is working properly (see command AC011 Rail pressure regulator).
Check the operation of the injectors (excessive return leak, clogging, seizing): run test 8 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).
If you do not have the CLIP Technic or if there is an imbalance, use a compression gauge to get an accurate
measurement.
after the operation, clear the faults caused by disconnecting the regulator and the heater plugs.
End of part A
AFTER REPAIRcarry out a road test followed by a complete check with the diagnostic tool.

DIESEL INJECTION
Fault finding – Fault Finding Chart13B
13B -227V3 MR-372-J84-13B250$855.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
ALP3 Injection noise
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:
If the injection noise occurs after starting from cold:
Check the low pressure diesel circuit priming.
Check the fuel heater supply.
Check the operation of the preheating system.
Check that fuel and engine temperatures are consistent.
If the injection noise occurs at idle speed:
Check the condition of the injector connector and pressure regulator terminals.
Check the conformity of the air flow signal: use fault finding procedures: PR132 Air flow or run test 3
Turbocharged air inlet circuit check.
If the complaint is still present, perform the injector fault finding procedure: run test 8 Poor injector operation.
does the injection noise occur at all engine speeds?
Run fault finding on the injectors: run test 8 Incorrect injector operation.
Check the condition of the injector connector and pressure regulator terminals.
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.
Check the conformity of the air flow signal: use the interpretation of the fault finding procedure PR132 Air flow.
If the customer complaint is still present:
Run command AC011 Rail pressure regulator.
Then apply the conformity check to confirm:
–the conformity of the fuel pressure between PR008 Rail pressure setpoint and PR038 Rail Pressure,
–the conformity of the pump fuel flow between PR157 Fuel flow setpoint and PR017 Fuel flow.
If the fault is still present, contact the Techline.
AFTER REPAIRcarry out a road test followed by a complete check with the diagnostic tool.
EDC16_V51_ALP3

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