2011 RENAULT SCENIC fuel pressure

13B-358
MR-372-J84-13B200$936.mif
V13
DIESEL INJECTION
Fault finding – Tests
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
TEST 11 Diesel fuel conformity check
WARNING
During this operation, it is essential to:
– refrain from smoking or bringing incandescent objects close to the work area,
– protect yourself against fuel splashes due to residual pressure in the pipes,
– wear safety goggles with side guards,
– wear leaktight gloves (Nitrile type).
IMPORTANT
– To avoid any corrosion or damage, protect the areas on which fuel is likely to run.
– To prevent impurities from entering the circuit, place protective plugs on all fuel circuit
components exposed to the open air.
Preparations:
Weigh an empty 1300 ml plastic cup (part no. 77 11 171 413) with its cover (part no. 77 11 171 416) using
electronic scales similar to those used in body paint workshops (example: PANDA part no. 77 11 224 995).
Record the weight of the empty plastic cup.
This type of plastic cup is used to prepare paint.
Ta k e a 1 l fuel sample from the diesel fuel filter outlet (see MR 364 (Mégane II) or MR 395 (Laguna II ph 2),
Mechanical, 19C, Tank, Fuel tank: Draining or MR 370 (Scénic II), Mechanical, 19C, Tank, Fuel tank
draining), using a pneumatic transfer pump (part no. 634-200) and place it in a 1300 ml plastic cup.
Cover the plastic cup with its cover and let the fuel settle for approximately 2 minutes.
Is the fuel cloudy or does it separate
into two parts?The diesel fuel contains water and is not compliant.
Drain the fuel circuit, including the tank (see MR 364
(Mégane II) or MR 395 (Laguna II ph 2), Mechanical, 19C,
Tank, Fuel tank: Draining or MR 370 (Scénic II),
Mechanical, 19C, Tank, Fuel tank draining).
YES
NO
A
EDC16_V50_TEST11/EDC16_V58_TEST11/EDC16_V5C_TEST11/EDC16_V18_TEST11/EDC16_V1C_TEST11/EDC16_V20_TEST11

13B-360
MR-372-J84-13B200$936.mif
V13
DIESEL INJECTION
Fault finding – Tests
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
Part 1. Overpressure valve return flow test:
TEST 12 Incorrect operation of the overpressure valve
Is the engine working?
–Fit Mot. 1760 as shown in the tool fitting procedure (see part 2).
– Press the Start button (with card).
– Measure the length travelled by the diesel fuel in the pipes of the
Mot. 1760.
– Replace the overpressure valve if the diesel length travelled is
greater than 10 cm.
– The overpressure valve return pipe must be fitted to the injector rail.
– Start the engine.
– Set the CLIP diagnostic tool to parameter reading mode.
– Raise the temperature of the engine.
– Display parameter PR063 Fuel temperature. Increase the diesel temperature to above 50°C.
– Switch off the engine.
–Fit Mot. 1760 as shown in the tool fitting procedure (see part 2).
– Display parameter PR038 Rail pressure.
– Ask another RTE to monitor the rise in diesel fuel in the container during engine turnover, as the container will
fill up quickly if the overpressure valve is leaking.
– Start the engine.
– Accelerate the engine until the pressure in the rail is 550 bar:
– if the engine speed is less than 3000 rpm, maintain this pressure,
– if the engine speed is greater than 3000 rpm, reduce the engine speed until the rail pressure is 500 bar and
maintain this pressure.
– Maintain these conditions for 1 min.
– Release the accelerator pedal and maintain the idle speed for 10 seconds.
– Switch off the engine.
– Measure the length of diesel contained in the measuring cylinder.
– Replace the injector rail if the quantity of diesel fuel is greater than 5ml.
– Remove Mot. 1760 as shown in the tool removal procedure (see part 3).
YES
NO
EDC16_V50_TEST12/EDC16_V58_TEST12/EDC16_V5C_TEST12/EDC16_V18_TEST12/EDC16_V1C_TEST12/EDC16_V20_TEST12

13B-361
MR-372-J84-13B200$936.mif
V13
DIESEL INJECTION
Fault finding – Tests
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
Part 2: Fitting the tool:
Remove the engine undertray.
Disconnect the overpressure valve return pipe according to the following procedure (do not remove the clips):
– press the clip,
– pull vertically on the end piece (1) of the fuel return pipe.
TEST 12
CONTINUED 1
IMPORTANT
The end piece is fragile. Be careful not to break it by pulling it too hard. Replace all removed clips.

13B-362
MR-372-J84-13B200$936.mif
V13
DIESEL INJECTION
Fault finding – Tests
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
Fit the blanking plugs (B), from the kit (part number 77 01 208 209), on the end pieces of the fuel return pipe.
IfMot.1760 is not fitted immediately on the overpressure valve, place a blanking plug (A) on the overpressure
valve fuel return opening.
TEST 12
CONTINUED 2

13B-363
MR-372-J84-13B200$936.mif
V13
DIESEL INJECTION
Fault finding – Tests
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
Shown above is the pipe (Mot. 1760) with the end piece (2) on the right and the plug (4) on the left.
Remove the clip and the plug from the end piece (2) of the pipe of tool Mot. 1760, leave the plug (4) in place.
Connect the pipe of Mot. 1760 to the rail overpressure valve (without removing the clip on the overpressure valve):
– press on the clip (1) of the overpressure valve,
– insert the end piece (2) in the overpressure valve fuel return opening.
– do not forget to fit the end piece plug (2) to the overpressure valve fuel return opening using the clip supplied.
Remove the plug (4).
Insert the end of the pipe in the measuring cylinder of the tool Mot. 1760, the measuring cylinder is retrieved from
the tool Mot.1711.
Measure the return flow (see the procedure in part 1 of this test).
Part 3: Removing the tool:
TEST 12
CONTINUED 3
IMPORTANT
Use a cleaning cloth (part number 77 11 211 707) to absorb fuel run-off.

13B-364
MR-372-J84-13B200$936.mif
V13
DIESEL INJECTION
Fault finding – Tests
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
Disconnect the pipe of Mot. 1760 on the overpressure valve:
– press on the clip (1) of the overpressure valve,
– pull horizontally on the end piece (2) of the pipe of Mot. 1760 while putting a cloth on the end piece (2) to avoid
the drips.
Lift the end piece (2) vertically so that the diesel fuel contained in the pipe flows into the measuring cylinder of
Mot. 1760.
Remove the plug from the fuel return pipe end piece (2).
Connect the complete fuel return pipe to the overpressure valve.
Wipe up any diesel fuel run-off using a cleaning cloth (part number 77 11 211 707).
TEST 12
CONTINUED 4

13B-365
MR-372-J84-13B200$972.mif
V13
13B
DIESEL INJECTION
Fault finding – Glossary
Injection computer112-track (BOSCH)
Connectors: black A 32-track, brown B 48-track, grey C 32-track
Atmospheric pressure sensor Integrated into the computer (BOSCH)
Injector0.23 Ω at + 20°C/2 Ω max. (BOSCH)
1600 bar (1800 bar max.)
Flow regulator (high pressure
pump)R = 3 Ω at + 20°C (BOSCH, pump type CP3.2+)
Rail pressure sensor Start of opening ~ 1600 bar,
Rail pressure limiter: opening at approximately 1800 bar (BOSCH, bolted to
the rail)
Engine speed sensor510 < R< 850 Ω at + 20°C (MGI)
Camshaft sensor Hall effect sensor (ELECTRICFIL)
R = 10250 ± 500 Ω at + 20°C (measured between connections 3CQ and 3FB of
component 746)
Turbocharger control solenoid
valve15.4 ± 0.7 Ω at + 20°C (PIERBURG)
Electric EGR valve3VP: + 12 V electric motor 3JM: potentiometer earth
3GC: + 5 V potentiometer 3VQ: engine earth
Track 3: Not used 3EL: potentiometer signal
Direct current motor: R between connections VP and VQ = between 1 Ω and
400 Ω at + 20°C
Potentiometer: R between connections 3GC and 3JM: 6.5 ± 2.6 kΩ at + 20°C
(SIEMENS)
Electrical damper valve Direct current motor (VDO)
Air flowmeter3B: air temperature signal 3FB: + 12 V battery
3DW: flowmeter earth 3DV: air flow signal
3KJ: + 5 V potentiometer NT: battery earth
(SIEMENS)
Air temperature sensorR = 3714
Ω ± 161 at + 10°C/2448 Ω ± 96 at + 20°C/1671 Ω ± 59 at + 30°C
Coolant temperature sensorR = 2252 Ω ± 112 at 25°C/811 Ω ± 39 at 50°C/283 Ω ± 8 at 80°C
Accelerator pedal sensorR gang 1 = 1700 ± 900 Ω;
R gang 2 = 2,850 ± 2,050Ω
Heater plugR = 0.6 Ω at + 20°C/2 Ω max.
Maximum current drawn: 28 A at 0 seconds/12 A at 10 seconds/9 A after
30 seconds
Turbine upstream temperature
sensor2-track yellow connector (NTK)
T=400°C -> R = 1772 Ω, T=500°C -> R = 725 kΩ
Particle filter differential
pressure sensorConnection 3LQ = 5 V, connection 3TK = Earth, connection 3TL = Signal
(BOSCH)
Temperature sensor upstream
of the particle filter2-track blue connector (DENZO)
T=50°C -> R = 106 kΩ, T=100°C -> R = 33.5 kΩ
Temperature sensor
downstream of the particle filter2 track black connector (DENZO)
T=50°C -> R = 106 kΩ, T=100°C -> R = 33.5 kΩ
Water in diesel fuel sensor According to application (ZERTAN)
MR-372-J84-13B200$972.mif
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C