fuel pump RENAULT SCENIC 2011 J95 / 3.G Engine And Peripherals EDC16C36 Workshop Manual

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DIESEL INJECTION
Fault finding – List and location of components13B
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
Refrigerant pressure sensor:
This sensor is located on the coolant circuit.
Engine coolant temperature sensor:
This sensor is located on the cylinder head near the engine water chamber.
Air temperature sensor:
The air temperature sensor is located at the air circuit inlet, integrated into the air flowmeter.
Turbocharging pressure sensor solenoid valve:
This solenoid valve is located on the turbocharger.
Catalytic converter:
The catalytic converter is located downstream of the turbocharger.
Fuel temperature sensor:
This sensor is located near the injection pump and injector return.
Cruise control/speed limiter on/off switch:
This switch is located in the passenger compartment to the left of the steering wheel near the lighting dimmer.
Fan unit relay:
The relay is located on the cooling radiator.
Accelerator potentiometer:
The potentiometer is located on the accelerator pedal.
Clutch pedal switch:
The switch is located on the clutch pedal.
Heater plugs:
The heater plugs are located on the cylinder head.
The richness ratio sensor:
The richness ratio sensor is mounted in the turbo outlet.
The turbocharger cooling pump:
This pump is located next to the turbocharger.
Particle filter downstream temperature sensor:
The sensor is located after the particle filter (only on certain F9Q816 engines in Vdiag 48).
Particle filter upstream temperature sensor:
The sensor is located before the particle filter (only on engine type F9Q816).
Particle filter differential pressure sensor:
The sensor is located on the particle filter (only on engine type F9Q816).

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13B
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
High pressure pump:
The pump draws in fuel from the tank, which passes through a fuel filter and supplies the fuel injectors.
Rail pressure sensor:
This sensor is fitted to the rail and indicates the pressure inside the rail.
Rail pressure regulator:
This component regulates the high pressure of the fuel in the injection system.
Fuel temperature sensor:
This sensor measures the fuel return temperature from the pump and injector return.
Four injectors:
These injectors enable rapid, precise metering of the quantity of fuel injected, with excellent injection process repeat
action.
Vacuum pump:
The vacuum pump is driven by the camshaft. The pump provides the vacuum required to operate the following
components: control solenoid valve, brake servo.
Control solenoid valve:
The solenoid valve controls the vacuum pump and the turbocharger vane control diaphragm.
Turbocharger:
The turbocharger is used to supply the engine with more air.
Turbocharger pressure sensor:
This sensor indicates the pressure at the turbocharger air cooler outlet before the damper valve.
Air mass flow meter:
The flowmeter measures the amount of fresh air entering the engine.
EGR valve:
Exhaust gas recirculation considerably reduces the nitrogen oxide emissions (NOx).
EGR position sensor:
The sensor gives the position of the EGR solenoid valve.
Damper valve:
The damper valve is used:
– When the engine is switched off, to dampen the engine which helps stop the engine.
– When in the rest position; the valve is open by default.
DIESEL INJECTION
Fault finding – Role of components

13B-14V9 MR-372-J84-13B450$040.mif
DIESEL INJECTION
Fault finding – Role of components13B
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
Clutch pedal switch:
The clutch pedal switch informs the computer of the pedal status.
Heater plugs:
The heater plugs preheat the combustion chamber so that the mixture detonation takes place under the best
conditions and thus start the engine.
Injector rail:
The injector rail receives and redistributes the fuel under high pressure to the injectors.
The richness ratio sensor:
The function of the proportional mixture sensor is to reset the injection system drift.
The turbocharger cooling pump:
This pump circulates the coolant to reduce the temperature of the turbocharger.
Particle filter downstream temperature sensor:
This sensor informs the computer of the temperature of the exhaust gases at the particle filter outlet (only on certain
engine types F9Q816 in Vdiag 48).
Particle filter upstream temperature sensor:
This sensor informs the computer of the temperature of the exhaust gases at the particle filter inlet (only engine
typeF9Q816).
Particle filter differential pressure sensor:
A differential pressure sensor monitors the status of the particle filter (particle weight) and triggers regeneration.
Role: To calculate the difference in pressure between the particle filter inlet and outlet (only engine type F9Q816).

13B-15V9 MR-372-J84-13B450$050.mif
13B
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
System outline
The high pressure injection system is designed to deliver a precise quantity of diesel fuel to the engine at a set
moment.
It is fitted with a BOSCH 128-track computer, type EDC16C36.
The system comprises:
– a priming bulb on the low pressure circuit,
– a diesel filter,
– a high pressure pump with a built-in low pressure pump (transfer pump),
– a high pressure regulator mounted on the pump,
– an injector rail,
– a diesel fuel pressure sensor built into the rail,
– four solenoid injectors,
– a diesel temperature sensor,
– a coolant temperature sensor,
– a cylinder reference sensor,
– an engine speed sensor,
– a turbocharger pressure sensor,
– an accelerator pedal potentiometer,
– an exhaust gas recirculation solenoid valve,
– a recycled gas cooling solenoid valve,
– an atmospheric pressure sensor integrated into the injection computer,
– an air flowmeter fitted with an air temperature sensor,
– a turbocharging pressure limitation solenoid valve,
– a motorised damper valve,
– a particle filter (F9Q816 engine only),
– a particle filter differential pressure sensor (F9Q816 engine only),
– a temperature sensor upstream of the particle filter (F9Q816 engine only),
– a temperature sensor downstream of the particle filter (only on certain F9Q816 engines in VDiag 48),
– a temperature sensor upstream of the turbine (F9Q816 engine only),
– a richness ratio sensor,
– a turbocharger cooling pump.
The common rail direct high pressure injection system works sequentially (based on the petrol engine multipoint
injection).
This injection system reduces operating noise, reduces the volume of pollutant gases and particles and produces
high engine torque at low engine speeds thanks to a pre-injection procedure.
The high pressure pump generates the high pressure and transmits it to the injector rail. The actuator located on the
pump controls the quantity of diesel supplied, according to the demand determined by the computer. The rail
supplies each injector through a steel pipe.
DIESEL INJECTION
Fault finding – Features

13B-16V9 MR-372-J84-13B450$050.mif
DIESEL INJECTION
Fault finding – Features13B
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
The high pressure pump is supplied at low pressure by an integrated low pressure pump (transfer pump).
It supplies the rail, the pressure of which is controlled by the fuel flow actuator (MPROP) for charging, and for
discharging by the injector valves. This compensates for pressure drops. The flow actuator allows the high pressure
pump to supply the exact quantity of diesel fuel required to maintain the pressure in the rail. This component
minimises the heat generated and improves engine output. In order to discharge the rail using the injector valves,
the valves are controlled by brief electrical pulses which are:
– short enough not to open the injector (passing through the feedback circuit from the injectors),
– long enough to open the valves and discharge the rail.
Some vehicles have a presence sensor mounted in the filter for detecting water in the diesel. If there is water in the
diesel fuel, the orange “Injection and pre-post heating” warning light will come on.
The system can inject diesel fuel into the engine at a pressure of up to 1600 bar. Before each operation, check that
the injector rail is depressurised and that the fuel temperature is not too high.
You must respect the cleanliness guidelines and safety advice specified in this document for any work on the high
pressure injection system.
Removal of the internal parts of the pump and injectors is prohibited. Only the fuel flow regulator/actuator, diesel fuel
temperature sensor and the venturi can be replaced.
For safety reasons, it is strictly prohibited to undo a high pressure pipe union when the engine is running.
It is not possible to remove the pressure sensor from the fuel rail because this may cause circuit contamination
faults. If the pressure sensor is defective, replace the pressure sensor, rail and high pressure pipes associated with
the rail.
Supplying + 12 V directly to any component in the system is prohibited.
Ultrasonic decoking and cleaning are prohibited.
Never start the engine unless the battery is connected correctly.
Disconnect the injection computer when carrying out any welding work on the vehicle. WARNING
The engine must not operate with:
– Diesel fuel containing more than 10% diester,
– petrol, even in tiny quantities.

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DIESEL INJECTION
Fault finding – Fault summary table13B
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
FaultDTC code in
hexadecimalLevel 1 fault
warning light
(orange
SERVICE
warning light)Level 2 fault
warning light
(red STOP
warning light)No fault
warning
light litOBD
warning
light lit
DF060 Misfiring on cylinder 2 302 - - 1.DEF -
DF061 Misfiring on cylinder 3 303 - - 1.DEF -
DF062 Misfiring on cylinder 4 304 - - 1.DEF -
DF065 Combustion misfire 300 - - 1.DEF -
DF069 Impact detected signal 1620 - 1.DEF - -
DF086 Coolant pump relay
control circuit2600CC.1/CC.0/
CO/ 1.DEF---
DF091 Vehicle speed signal 500 - - 1.DEF -
DF098 Fuel temperature
sensor circuit180 - - CC.0/CO.1 -
DF107 Computer memory 62F 1.DEF - - 1.DEF
DF119 Camshaft sensor
signal340 1.DEF/2.DEF - - -
DF120 Engine speed sensor
signal335 - 1.DEF/2.DEF - -
DF151 Main relay circuit 685 1.DEF/2.DEF - - -
DF165 Accelerator pedal
position sensor circuit2299 - 1.DEF/2.DEF 3.DEF -
DF195 Camshaft/engine
speed sensor consistency16 - - 1.DEF -
DF196 Pedal sensor circuit
gang 1225CO.0/CC.1/
1.DEF---
DF198 Pedal sensor circuit
gang 22120CO.0/CC.1/
1.DEF---

13B-361
AFTER REPAIRRepeat the conformity check in the interpretation of statuses and parameters
V9 MR-372-J84-13B450$170.mif
DIESEL INJECTION
Fault finding – Interpretation of commands13B
SC035HIGH PRESSURE FUEL CIRCUIT FAULT FINDING
NOTESThis command is used to interpret the state of the high pressure fuel circuit (high
pressure pump, rail, injectors and high pressure supply pipes).
To run this command, select scenario SC035 on the diagnostic tool.
Procedure to be followed:
– select scenario SC035 High pressure fuel circuit fault finding,
– follow the instructions then “confirm”,
– with the command in progress: do not operate on the vehicle,
– switch off the engine at the end of the test,
– the tool displays the results,
– end of test.
Interpretation of correct results:
– If the results displayed are OK, the entire high pressure fuel circuit is in order. There is no need for any operation.
Stage X
(X is the variable from 1 to 4)Rising time
Rail pressureDrop off time
Rail pressureInterpretation of results
Stage X OK OK No operation
Stage 5 OK No operation
Interpretation of incorrect results:
– Is one of the value definitions for the various displayed stages is “TOO SLOW” or “TOO FAST”, see the
following table:
Stage X
(X is the variable from 1 to 4)Rising time
Rail pressureDrop off time
Rail pressureInterpretation of results
Stage X TOO SLOW TOO SLOW Check 1
Stage X TOO SLOW TOO FAST Check 2
Stage X TOO SLOW OK Check 3
Stage X OK TOO SLOW Check 4
Stage X OK TOO FAST Check 5
Stage 5 TOO FAST Check 5
EDC16C36_V4C_SC035/EDC16C36_V48_SC035/EDC16C36_V50_SC035/EDC16C36_V54_SC035/EDC16C36_V58_SC035 EDC16 C36
Program No.: 91
Vdiag No.: 4C, 48, 50,
54, 58

13B-362
AFTER REPAIRRepeat the conformity check in the interpretation of statuses and parameters
V9 MR-372-J84-13B450$170.mif
DIESEL INJECTION
Fault finding – Interpretation of commands13B
SC035
CONTINUED
Explanation of results interpretation:
Check 1:
– Use scenario SC031: Operational fault finding of cylinders.
–For VDiag 44, run Test 10 Poor injector operation.
–Apply ALP6 Fuel circuit external leaks.
–Run Test 3 Low pressure circuit check.
– Replace the high pressure pump.
Check 2:
– Use scenario SC031: Operational fault finding of cylinders.
–For VDiag 44, run Test 10 Poor injector operation.
–Apply ALP6 Fuel circuit external leaks.
– Run the part of Test 3 Low pressure circuit check which concerns the fuel filter.
– Replace the high pressure pump.
– Check the injector return flow and the injectors, run Test 10 Poor injector operation.
– Check the rail pressure regulator by running command AC011 “Rail pressure regulator”.
Check 3:
– Use scenario SC031: Operational fault finding of cylinders.
–For VDiag 44, run Test 10 Poor injector operation.
–Apply ALP6 Fuel circuit external leaks.
–Run Test 3 Low pressure circuit check.
– Replace the high pressure pump.
Check 4:
Replace the high pressure pump.
Check 5:
– Check the injector return flow and the injectors (run Test 10 Poor injector operation).
– Check the rail pressure regulator by running command AC011 “Rail pressure regulator”.
Consult the repair manual for the various checks (from 1 to 5), see MR 364 (Mégane II ph2), MR 370 (Scénic II
ph2), Mechanical, 13B, Diesel injection, Injector rail, Removal - Refitting.
Repair if necessary.
EDC16 C36
Program No.: 91
Vdiag No.: 4C, 48, 50,
54, 58

13B-370
AFTER REPAIRRepeat the conformity check in the interpretation of statuses and parameters
V9 MR-372-J84-13B450$170.mif
DIESEL INJECTION
Fault finding – Interpretation of commands13B
AC011
CONTINUED
Step 2
In the event of rail overpressure:
Check that there are no air bubbles in the diesel fuel low pressure circuit.
Check that the rail pressure sensor is operating correctly.
Consult the interpretation of parameter PR038 Rail pressure.
If these checks reveal no irregularities, replace the regulator.
in the event of rail underpressure:
Check that the rail pressure sensor is operating correctly.
Consult the interpretation of parameter PR038 Rail pressure.
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 that there are no air bubbles between the filter and the high pressure pump.
Check the sealing of the low and high pressure diesel fuel systems: use ALP6 Fuel circuit leaks (visual
inspections, touch tests, odours, etc.) on:
pump body, pressure release valve, pipes, rail and injectors unions, injector wells, etc.
Check the conformity of the seal fitting on the pressure regulator.
Check the operation of the injectors, run Test 10 Poor injector operation.
Carry out the necessary repairs.
If the engine starts:
Clear any faults.
Check the pressure regulator by applying (see ALP7 Rough idle).
With the engine warm, leave it to idle for a few minutes (3 to 5 minutes):
– If it stalls and the fault reappears, replace the regulator.
– If it does not stall, stabilise the engine speed at 2000 rpm(1 minute) then accelerate at full load until it cuts out.
If the engine stalls, contact the Techline
If the engine does not startor there is no timing:
first, replace the regulator and if the fault is still present, contact the Techline.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-387
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
V9 MR-372-J84-13B450$190.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
ALP4
CONTINUED
is the engine running on all cylinders?
Check the operation of the injectors, run test 10 Poor injector operation.
If the fault is still present
Check the conformity of the accelerator pedal position sensor, the brake pedal sensor, the atmospheric pressure
sensor, the exhaust gas recirculation valve, and the damper valve (see Interpretation of statuses and
Interpretation of parameters).
Check the consistency of the signal for the air flowmeter, the engine coolant temperature sensor, the fuel
temperature sensor and the engine speed.
Check the connectors, the continuity, and the absence of interference resistance of the air flowmeter (apply DF056
Air flow sensor circuit), the engine coolant temperature sensor (apply DF001 Coolant temperature circuit), the
fuel temperature sensor (apply DF098 Fuel temperature sensor circuit), and the engine speed (apply DF195
Camshaft sensor - engine speed consistency).
Check:
– That the diesel filter is not clogged.
– That there are no leaks on the high and low pressure diesel circuits: run test 3 Low pressure circuit check.
– The connection of the oil vapour rebreathing circuit.
– The rail pressure regulator (MPROP) (jammed - stuck), apply the interpretation of command AC011 Rail
pressure regulator.
Check the engine timing (and the position of the high pressure pump sprocket). See the procedure in the
Workshop Repair Manual if necessary.
Test the high pressure fuel circuit:
Run the scenario SC035 High pressure fuel circuit fault finding (see Interpretation of commands).
If the fault is still present, contact the techline.
A
NO
YES
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58