lock RENAULT SCENIC 2011 J95 / 3.G Engine And Peripherals EDC16 Workshop Manual

13B-2
MR-372-J84-13B200$036.mif
V13
13B
DIESEL INJECTION
Fault finding – Introduction
1. SCOPE OF THIS DOCUMENT
This document presents the fault finding procedure applicable to all computers with the following specifications:
2. PREREQUISITES FOR FAULT FINDING
Documentation type
Fault finding procedures (this manual):
– Assisted fault finding (integrated into the diagnostic tool), Dialogys.
Wiring Diagrams:
– Visu-Schéma (CD-ROM), paper.
Type of diagnostic tools
– CLIP + multiplex line sensor
Special tooling required
3. REMINDERS
Procedure
In order to save energy, the LAGUNA II Phase 2 UCH cuts off the + after ignition feed after 3 minutes.
To run fault finding on a vehicle computer, it is possible to force the + after ignition feed for 1 hour by applying the
following procedure:
– Press the card unlocking button.
– Insert the card into the reader.
– Press the start button (interrupting the timed + after ignition feed mode).
– Press the start button for more than 5 seconds, without conditions for starting being met, until the
immobiliser warning light flashes rapidly (4Hz).
– Connect the diagnostic tool and perform the required operations.
This forced + after ignition feed mode remains active for 1 hour.
Pressing the Start button or removing the card from the card reader cuts off the + after ignition feed but does not
cut off the forced after ignition feed timed mode. As long as one hour has not elapsed the + after ignition feed
function restarts the forced + after ignition feed for the remaining time. Vehicles: MEGANE II ph1 and ph2, SCENIC II ph1
and ph2, LAGUNA II ph 2,
Engine type and suffix: F9Q 758, 759, 804, 803
Function concerned: DIESEL INJECTIONName of computer: BOSCH EDC16 C3
Program No: C1
Vdiag No: 18, 1C, 20, 50, 58, 5C
Special tooling required
Multimeter
Elé. 1590 Computer connection bornier
Or Elé. 1681 Universal bornier
EDC16_V50_PRELI/EDC16_V58_PRELI/EDC16_V5C_PRELI/EDC16_V18_PRELI/EDC16_V1C_PRELI/EDC16_V20_PRELI EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
MR-372-J84-13B200$036.mif

13B-5
MR-372-J84-13B200$036.mif
V13
DIESEL INJECTION
Fault finding – Introduction
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
3. FAULT FINDING PROCEDURE (continued)
3.1 Checking the wiring
Fault finding problems
Disconnecting the connectors and/or manipulating the wiring harness may temporarily remove the cause of a fault.
Visual inspection
Look for damage under the bonnet and in the passenger compartment.
Carefully check the protectors, insulation, and routing of the wiring, as well as the mountings.
Tactile inspection
When manoeuvring the wiring, either use the diagnostic tool to detect a change in status, from "stored" to
"present", or the multimeter to view the status changes.
Make sure that the connectors are properly locked.
Apply light pressure to the connectors.
Twist the wiring harness.
Checking earth insulation
This check is carried out by measuring the voltage (multimeter in voltmeter mode) between the suspect connection
and the 12 V or 5V feed. The correct measured value is 0V.
Checking insulation against + 12 V or + 5 V
This check is carried out by measuring the voltage (multimeter in voltmeter mode) between the suspect connection
and the earth. In the first instance, the earth may be taken on the chassis. The correct measured value is 0V.
Continuity check
A continuity check is carried out by measuring the resistance (multimeter in ohmmeter mode), with the connectors
disconnected at both ends. The expected result is: 1Ω±1Ω for each connection. The line must be fully checked,
and the intermediate connections are only included in the method if this saves time during the fault finding
procedure. The continuity check on the multiplex lines must be carried out on both wires. The measured value
should be 1Ω±1Ω.
Checking the supply
This check may be carried out using a test light (21 W or 5W depending on the maximum authorised charge).

13B-6
MR-372-J84-13B200$036.mif
V13
DIESEL INJECTION
Fault finding – Introduction
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
3.2 Checking the connectors
1. Visual inspection of the connection:
– Check that the connector is connected correctly and that the male and female parts of the connection are
correctly coupled.
2. Visual inspection of the area around the connection:
– Check the condition of the mounting (pin, strap, adhesive tape, etc.) if the connectors are attached to the
vehicle.
– Check that there is no damage to the wiring trim (sheath, foam, adhesive tape, etc.) near the wiring.
– Check that there is no damage to the electrical wires at the connector outputs, in particular on the insulating
material (wear, cuts, burns, etc.).
Disconnect the connector to continue the checks.
3. Visual inspection of the plastic casing:
– Check that there is no mechanical damage (casing crushed, split, broken, etc.), in particular to the fragile
components (lever, lock, sockets, etc.).
– Check that there is no heat damage (casing melted, darker, deformed, etc.).
– Check that there are no stains (grease, mud, liquid, etc.).
4. Visual inspection of the metal contacts:
(The female contact is called CLIP. The male contact is called TAB.)
– Check that there are no bent contacts (the contact is not inserted correctly and can come out of the back of the
connector). The contact comes out of the connector when the wire is pulled gently.
– Check that there is no damage (folded tabs, clips open too wide, blackened or melted contact, etc.).
– Check that there is no oxidation on the metal contacts. Note:
Carry out each requested check visually. Do not remove a connector if it is not required.
Note:
Repeated connections and disconnections alter the functionality of the connectors and increase the risk of poor
electrical contact. Limit the number of connections/disconnections as much as possible.
Note:
The check is carried out on the 2 parts of the connection. There may be two types of connection:
– Connector/Connector.
– Connector/Device.

13B-14
MR-372-J84-13B200$108.mif
V13
DIESEL INJECTION
Fault finding – System operation
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
c) Functions hosted:
Air conditioning management assistance:
In the case of vehicles with climate control, the EDC16 system has the option of deactivating the air conditioning via
the UCH, under certain conditions of use:
– when requested by the driver,
– when starting the engine,
– if the engine overheats (in order to reduce the power the engine has to supply),
– when the engine speed is kept at a very high level (to protect the compressor),
– during transition phases (e.g. high acceleration demand for overtaking, anti-stalling and moving off). These
conditions are only taken into account if they do not occur repeatedly, so as to prevent system instabilities
(erratic deactivation),
– when certain faults appear.
Cold loop air conditioning management (Mégane II only):
The air conditioning is the cold loop type and its management shared between several computers.
The injection computer is responsible for:
– authorising cold requests according to the refrigerant pressure, the engine coolant temperature and the engine
speed,
– calculating the power absorbed by the compressor (from the refrigerant pressure),
– requesting operation of the GMV, from the UPC, according to the vehicle speed, the refrigerant pressure and the
engine coolant temperature.
The driver requests the air conditioning to be switched on by means of the ventilation selector coupled to a switch.
The cold air request is authorised or denied depending on the pressure measured. If this pressure is outside the
operating limits, the cold loop program is not activated.
Management of the damper valve:
The damper valve has three functions:
– the valve closes in order to block the passage of air towards the cylinders to shut off the engine. The aim of this is
to stop the engine as quickly as possible and to reduce instabilities as the engine is switched off.
– a "valving" function depending on the various engine functions: the damper valve closes by a few % in order to
create a venturi effect in the EGR valve flow section.
The aim of this is to accelerate the EGR gas flow rate and to reduce the emission of pollutants.
– regulatory function during the regeneration of the particle filter.
Thermoplunger management (only for Vdiag 58, 5C,18, 1C and 20):
This vehicle is fitted with thermoplungers. They are managed and activated by the injection system.
See configuration reading LC056 Thermoplungers: WITH or WITHOUT.
When necessary, the thermoplungers are actuated by the injection system only during particle filter
regeneration by means of a specific unit.
The maximum number of thermoplungers that can be managed is four; their activation depends mainly on the
coolant temperature (< 15°C) and air temperature (< 5°C).

13B-40
MR-372-J84-13B200$252.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF008
PRESENT
OR
STOREDPEDAL POTENTIOMETER CIRCUIT GANG 1
CO.0: Open circuit or short circuit to earth
CC.1 : Short circuit to + 12 V
1.DEF: Inconsistent signal
2.DEF: Accelerator pedal sensor locked
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after a series of full-load/no-load actions on the
accelerator pedal.
Special notes:
Turbocharging, passenger compartment heating resistor activation and the cruise
control/speed limiter are not authorised.
If CO.0, CC.1 or 1.DEF is present the level 1 warning light is lit.
The engine speed is fixed at 1400 rpm if there is a fault on gangs 1 and 2 of the pedal
potentiometer and the engine torque is limited.
Use bornier Elé. 1681 or Elé. 1590 for all operations on the computer connectors.
Priorities when dealing with a number of faults:
Deal with fault first if it is DF011 Sensor feed voltage no. 1 first if it is present or
stored.
WARNING
This fault may appear if the wiring harness has been damaged.
Follow the procedure described in the Wiring Check in the Introduction.
This check enables the condition and the conformity of the engine wiring harness to be checked.
CO.0
NOTESPriorities when dealing with a number of faults:
If fault DF009 Pedal potentiometer circuit gang 2 is
present at the same time, check that the pedal sensor
connector is connected correctly.
Check the pedal potentiometer connections.
Check the injection computer connections.
Repair if necessary.
Check the continuity and insulation to earth of the following connections:
– connection code 3KW,
– connection code 3LR,
between components 120 and 921.
If the connection or connections are faulty and there is a repair method (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Measure the resistance of the pedal potentiometer on gang 1 between connections 3LR and 3LT.
Replace the pedal potentiometer if the resistance is not approximately 0.8 kΩ < X < 2.6 kΩ.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF008/EDC16_V58_DF008/EDC16_V5C_DF008/EDC16_V18_DF008/EDC16_V1C_DF008/EDC16_V20_DF008

13B-42
MR-372-J84-13B200$252.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF008
CONTINUED 2
1.DEF
NOTESNone
Check the pedal potentiometer connections.
Check the injection computer connections.
Repair if necessary.
Check the continuity and absence of interference resistance of the following connections:
– connection code 3LS,
– connection code 3LR,
– connection code 3LT,
– connection code3LW,
– connection code 3LU,
– connection code 3LV.
between components 120 and 921.
If the connection or connections are faulty and there is a repair method (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the fault is still present, replace the pedal potentiometer.
2.DEF
NOTESNone
Check the mechanical condition of the accelerator pedal:
– locked in full load position,
– with the pedal blocked by an external component.
Repair if necessary.
Check the brake light switch.
Vary the position of the pedal and refer to the conformity check in order to check the operating values of the
accelerator pedal potentiometer.
If the values displayed are inconsistent, replace the accelerator pedal potentiometer.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.

13B-64
MR-372-J84-13B200$288.mif
V13
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5CDIESEL INJECTION
Fault finding – Interpretation of faults13B
DF038
CONTINUED 1
1.DEF to 5.DEF
7.DEF, 8.DEF
10.DEF, 12.DEF,
13.DEF
NOTESNone.
Check the injection computer connections and the continuity of all the supplies.
Repair if necessary.
Clear the faults.
Switch off the ignition, wait 1 minute and switch the ignition on again.
If the fault is still present, fill in the fault finding log and contact the Techline.
6.DEF
NOTESNone.
Run command RZ034 Computer memory.
Switch off the ignition and perform a complete powerlatch.
Read the faults.
If the problem disappears:
– run command SC036 Reinitialise programming, and select After replacing injection computer with no
save option,
– enter the injector codes using command SC002 Enter injector codes (see Interpretation of commands),
– Check that there are no leaks or blockages in the exhaust pipe,
Repair if necessary
– perform an After-Sales regeneration. Follow the procedure for command SC017 Particle filter regeneration
(see Interpretation of commands),
– change the engine oil.
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.

13B-78
MR-372-J84-13B200$288.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF050
CONTINUED
For Laguna II:
Brake pedal released
– continuity between connections 5A and SP13,
– infinite resistance between connections 65A and SP17.
Brake pedal depressed
– infinite resistance between connections 5A and SP13,
– continuity between connections 65A and AP10.
Replace the switch if necessary.
Check the condition of fuse H 15A on the passenger compartment fuse and relay board.
Replace the fuse if necessary.
Check the supplies to the switch:
For Mégane II and Scénic II:
+ 12 V after ignition Connection SP17 of component 160
+ 12 V battery Connection BPT of component 160 (via ABS)
For Laguna II:
+ 12 V after ignition Connection SP13 of component 160
+ 12 V battery Connection AP10 of component 160
Check the continuity and insulation of connection 5A between components 120 and 160.
If the connection or connections are faulty and there is a repair method (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
2.DEF
NOTESNone
Check the brake pedal switch connections.
Check the condition and adjustment of the brake pedal switch.
Repair if necessary.
Check the continuity and absence of interference resistance on connection 5A between components 120
and160.
If the connection or connections are faulty and there is a repair method (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Check the conformity of the switch by consulting the interpretation of statuses ET704 Brake switch no. 1 and
ET705 Brake switch no. 2.
If the fault is still present, run fault finding on the ABS computer (see 38C, Anti-lock braking system).
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.

13B-89
MR-372-J84-13B200$288.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF055
CONTINUED 1
1.DEF
NOTESNone
Check the turbocharging pressure sensor connections,
Check the connections of the turbocharging solenoid valve,
Check the injection computer connections.
Repair if necessary.
Check the sealing of the high pressure air circuit:
– disconnected or pierced pipes,
– pressure sensor disconnected or poorly fitted (seal present),
– intercooler pierced (to check the intercooler: with the vehicle stopped, stabilise the engine speed between 3500
and 4000 rpm and check that there are no leaks).
Check the conformity of the turbocharging pressure signal and run test 2Air line at the turbocharger, test 6
Turbocharger control solenoid valve check and test 7 Turbocharger.
Check that the turbocharger and the control circuit are working:
– With the engine stopped, check that the control rod is (in the rest position the control rod is retracted).
– start the engine and check that the control rod disengages and pulls on the turbocharger geometry (when the
engine is stopped, the control rod should return to the rest position).
If the control rod does not move correctly, carry out the following checks:
1. Check the control vacuum pressure:
– Disconnect the solenoid valve inlet hose and connect it to a pressure gauge,
– start the engine and stabilise it at idle speed,
– if the vacuum is not between 700 mbar < X < 900 mbar, check the vacuum circuit from the vacuum pump,
– Stop the engine, reconnect the intake hose and proceed to step 2.
2. Solenoid valve control check:
– Disconnect the solenoid valve outlet hoses,
– start the engine and stabilise it at idle speed,
– place your hand on the solenoid valve and block the outlet connection with your thumb,
– if there is no detectable vibration of the solenoid valve, check that the computer output is operating correctly
(see DF054 Turbocharging solenoid valve control circuit 1.DEF).
3. Solenoid valve operation check:
– Connect the pressure gauge to the solenoid valve outlet union,
– start the engine and stabilise it at idle speed,
– if the vacuum is not 700 mbar < X < 900 mbar, replace the solenoid valve.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.

13B-105
MR-372-J84-13B200$324.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF091
PRESENT
OR
STOREDVEHICLE SPEED SIGNAL
1.DEF: Inconsistent signal
2.DEF:Signal outside upper limit
3.DEF:Configuration absent or incorrect
4.DEF:Multiplex line connection fault
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present during a road test.
Special notes:
Use bornier Elé.1681 or Elé.1590 for any operation on the injection computer
connectors.
Check the ABS computer connections.
Check the injection computer connections.
Repair if necessary.
Run fault finding on the multiplex network (see 88B, Multiplexing) and on the ABS (see 38C, Anti-lock braking
system).
Refer to the Technical Notes for the vehicle when dealing with any faults.
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF091/EDC16_V58_DF091/EDC16_V5C_DF091/EDC16_V18_DF091/EDC16_V1C_DF091/EDC16_V20_DF091