2009 RENAULT SCENIC engine

DIESEL INJECTION
Fault finding – Test13B
13B -262V3 MR-372-J84-13B250$900.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
2 - Checking the balance of the injector return flows:
3 - Removing the tool:
Disconnect the pipe from an injector:
–press on the injector clip,
–pull vertically on the end piece of the pipe of tool Mot.1760, placing a wipe on the end piece to prevent run-off.
Lift the end piece vertically so that the fuel contained in the pipes flows into the measuring cylinders of tool Mot.1760.
Remove the other 3 pipes using the same procedure.
TEST8
CONTINUED 5
Does the engine start? – Fit Mot. 1760 as shown in the tool fitting procedure.
–Start the vehicle or perform a 15 second starting sequence
(with ignition key).
–Measure the length travelled by the diesel fuel in the pipes of the
Mot. 1760.
–Replace the injector if the length travelled by the fuel is more than
10 cm compared with the average of the other three injectors. NO
YES
–The injector return pipes must be fitted to the injectors.
–Start the engine.
–Display the Fuel circuit sub-function in the CLIP diagnostic tool.
–Raise the temperature of the engine.
–Read the diesel fuel temperature with PR063 Fuel temperature until a diesel fuel temperature greater than
50˚C is reached
–Switch off the engine.
–Fit Mot. 1760 as shown in the installation procedure (see step 1).
–Check the value of the PR038 Rail pressure.
–Ask another Cotech to monitor the rise in fuel in the cans during engine turnover, as one of the cans will fill up
quickly if one of the injectors is leaking.
–Start the engine.
–Accelerate the engine until the pressure in the rail is 550 bar:
●if the engine speed is less than 3,000 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 one minute.
–Release the accelerator pedal and maintain the idle speed for 10 seconds.
–Switch off the engine.
–Measure the quantity of fuel contained in each measuring cylinder.
–Replace the injector if the quantity of fuel is more than 50 ml.
–Remove Mot. 1760 as shown in the tool removal procedure (see step 3).
IMPORTANT:
Use a cleaning cloth (part number 77 11 211 707) to absorb fuel run-off.

DIESEL INJECTION
Fault finding – Test13B
13B -265V3 MR-372-J84-13B250$900.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
TEST9
CONTINUED
High pressure circuit check
Note:
According to the vehicle type, maximum visual access will either
be from above or from below.
Visually inspect the condition of the following components:
–outlet pipe of the compressor to the turbocharging air cooler,
–turbocharging air cooler outlet pipe at inlet manifold,
–inlet manifold,
–temperature and pressure sensors.
Is one of these components incorrect (disconnected, cut,
bent, pierced or kinked pipes)?YESReplace
the defective parts
(see MR 364
(Mégane II) or 370
(Scénic II),
Mechanical, 12B,
Turbocharging).
NO
Exhaust system check
Visually inspect the condition of the following engine parts:
–the exhaust manifold circuit to the turbocharger turbine,
–the turbine outlet pipe to the end of the exhaust pipe,
–the inlet manifold to the EGR valve
–check that the temperature and pressure sensors are
connected.
Do some of these components have black or white marks on
them? YES
NO
Run test 5 Turbocharger control solenoid valve check.

DIESEL INJECTION
Fault finding – Test13B
13B -269V3 MR-372-J84-13B250$900.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
Part 1. Overpressure valve return flow test:
TEST11 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 fuel 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).
–View parameter PR038 Rail pressure.
–Ask another Cotech to monitor the rise in 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 is greater than 5 ml.
–Remove Mot. 1760 as shown in the tool removal procedure (see part 3).
YESNO
EDC16_V51_TEST11

DIESEL INJECTION
Fault finding – Test13B
13B -270V3 MR-372-J84-13B250$900.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
Part 2: Fitting the tool:
Remove the engine undertray.
Disconnect the overpressure valve fuel 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.
TEST11
CONTINUED 1
IMPORTANT
The end piece is fragile. Be careful not to break it by pulling it too hard. Replace

DIESEL INJECTION
Fault finding – Glossary13B
13B -273V3 MR-372-J84-13B250$945.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51DIESEL INJECTION
Fault finding – Glossary
(R = Resistance, EGR = Exhaust gas recirculation, FAP = Particle filter)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
Flow regulator (high pressure
pump)R = 3 Ω at + 20˚C (BOSCH, CP3.2+ pump type)
Rail pressure sensorPressure limiter on the rail: opening around 1800 bar
(BOSCH, bolted to the rail)
Engine speed sensor R = 680 ± 170 Ω at +20˚C (MGI)
Camshaft sensorHall effect sensor (ELECTRICFIL)
R = 10250 ± 500 Ω at + 20˚C (measurement between tracks 2 and 3 of the
sensor)
Turbocharger control solenoid valve 15.4 ± 0.7 Ω at + 20˚C (PIERBURG)
Electric EGR valveTrack 1: + 12 V electric motor
Track 2: + 5 V potentiometer
Track 3: Not usedTrack 4: potentiometer earth
Track 5: engine earth
Track 6: potentiometer signal
DIRECT CURRENT MOTOR: R between tracks 1 and 5 = between 1 Ω and
400 Ω at + 20˚C
POTENTIOMETER: R between tracks 2 and 4: 6.5 ± 2.4 kΩ at + 20˚C
(SIEMENS)
Electrical damper valve MOTOR (VDO)
Air flowmeterTrack 1: air temperature signal
Track 2: flow sensor earth
Track 3: + 5 V flowmeterTrack 4: + 12 V battery
Track 5: air flow signal
Track 6: battery earth
(SIEMENS)
Air temperature sensor R = 3714 Ω ± 161 at + 10˚C/2448 Ω ± 96 at + 20˚C/1671 Ω ± 59 at + 30˚C
Coolant temperature sensor R = 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 = 2850 ± 2050 Ω
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
Water in diesel fuel sensor According to application (ZERTAN)