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

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V13
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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

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DIESEL INJECTION
Fault finding – Introduction
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
Faults
Faults are declared as either present or stored (depending on whether they appeared in a certain context and have
disappeared since, or whether they remain present but have not been diagnosed within the current context).
The present or stored status of faults should be taken into consideration when the diagnostic tool is switched on
after the + after ignition feed (without any system components being active).
For a present fault, apply the procedure described in the Interpretation of faults section.
For a stored fault, note the faults displayed and apply the instructions in the Notes section.
If the fault is confirmed when the instructions in the Notes section are applied, the fault is present. Deal with the
fault
If the fault is not confirmed, check:
– the electrical connections that correspond to the fault,
– the connectors for this connection,
– the resistance of the component detected as faulty,
– the condition of the wires.
Refer to paragraphs 3.1 Checking the wiring and 3.2 Checking the connectors.
Conformity check
The aim of the conformity check is to check data that does not produce a fault on the diagnostic tool because the
data is inconsistent. Therefore, this stage is used to:
– carry out fault finding on faults that do not have a fault display, and which may correspond to a customer
complaint.
– check that the system is operating correctly and that there is no risk of a fault recurring after repairs.
This section gives the fault finding procedures for statuses and parameters and the conditions for checking them.
If a status is not behaving normally or a parameter is outside the permitted tolerance values, consult the
corresponding fault finding page.
Customer complaints – Fault finding chart
If the test with the diagnostic tool is OK but the customer complaint is still present, the fault should be processed by
customer complaints.
A summary of the overall procedure to follow is provided on the following page in the
form of a flow chart.

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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).

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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.

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DIESEL INJECTION
Fault finding – Introduction
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
Visual inspection of the sealing:
(Only for watertight connectors)
Check for the seal on the connection (between the 2 parts of the connection).
– Check the seal at the back of the connectors:
– For unit
joints (1 for each wire), check that the unit joints are present on each electrical wire and that they are
correctly positioned in the opening (level with the housing). Check that plugs are present on openings which are
not used.
– For a grommet
seal (one seal which covers the entire internal surface of the connector), check that the seal is
present.
– For gel
seals, check for gel in all of the sockets without removing the excess or any protruding sections (it does
not matter if there is gel on the contacts).
– For hotmelt
sealing (heat-shrink sheath with glue), check that the sheath has contracted correctly on the rear of
the connectors and electrical wires, and that the hardened glue comes out of the side of the wire.
– Check that there is no damage to any of the seals (cuts, burns, significant deformation, etc.).
If a fault is detected, consult Technical Note 6015A, Repairing electrical wiring.
4. FAULT FINDING LOG
You will always be asked for this log:
– when requesting technical assistance from Techline,
– for approval requests when replacing parts for which approval is mandatory,
– to be attached to monitored parts for which reimbursement is requested. The log is needed for warranty
reimbursement, and enables better analysis of the parts removed.
5. SAFETY INSTRUCTIONS
Safety rules must be observed during any work on a component to prevent any damage or injury:
– check the battery voltage to avoid incorrect operation of computer functions,
– Use the proper tools. IMPORTANTIMPORTANT
Any fault on a complex system requires thorough fault finding with the appropriate tools. The
FAULT FINDING LOG, which should be completed during the procedure, enables you to keep
track of the procedure which is carried out. It is an essential document when consulting the
manufacturer.
IT IS THEREFORE MANDATORY TO FILL OUT A FAULT FINDING LOG EACH TIME FAULT FINDING IS
CARRIED OUT.

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DIESEL INJECTION
Fault finding – Interpretation of faults
DF001
PRESENT
OR
STOREDCOOLANT TEMPERATURE SENSOR CIRCUIT
CC.0: Short circuit to earth
CO.1: Open circuit or short circuit to + 12 V
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present during engine starting attempts or while the engine is
running.
Special notes:
If the fault is present:
– the coolant temperature: PR064 Coolant temperature is fixed at 11 9 ° C,
– the preheating phase is greater than 10 seconds,
– the low speed motor-driven fan assembly (GMV 1) is continuously supplied,
–if fan assembly 1 is faulty, then fan assembly 2 is activated on vehicles equipped
with air conditioning,
– the level 1 warning light is lit,
– the OBD warning light illuminates after three consecutive driving cycles (start the
engine
+ 5 seconds, then switch off the ignition and wait for 1 minute).
Use bornier Elé. 1681 or Elé. 1590 for all operations on the computer connectors.
Check the coolant temperature sensor connections.
Check the injection computer connections.
Repair if necessary.
Measure the resistance of the coolant temperature sensor between connections 3C and 3JK.
Replace the sensor if its resistance is not approximately:
68780 Ω < X < 82780 Ω at - 40°C
12338 Ω < X < 12582 Ω at - 10°C
2140 Ω < X < 2364 Ω at 25°C
772 Ω < X < 850 Ω at 50°C
275 Ω < X < 291 Ω at 80°C
11 2 Ω < X < 118 Ω at 110°C
85 Ω < X < 89 Ω at 120°C
Check the insulation, continuity and the absence of interference resistance on the following connections:
– connection code3C,
– connection code 3JK,
between components 120 and 244.
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 coolant temperature sensor.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF001/EDC16_V58_DF001/EDC16_V5C_DF001/EDC16_V18_DF001/EDC16_V1C_DF001/EDC16_V20_DF001EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
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DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF004
PRESENT
OR
STOREDTURBOCHARGING PRESSURE SENSOR CIRCUIT
CO.0: Open circuit or short circuit to earth
CC.1: Short circuit to + 12 V
1.DEF: Inconsistent signal
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present during engine starting attempts or while the engine is
running.
Special notes:
Use bornier Elé.1681 or Elé.1590 for any operation on the injection computer
connectors.
If the fault is present:
– the EGR function is inhibited,
– the turbocharging pressure is in defect mode, PR041 Turbocharging pressure =
750 mbar,
– the level 1 warning light is illuminated.
Order of priority in the event of more than one fault:
Deal with fault first if it is DF011 Sensor feed voltage no. 1 first if it is present or
stored.
IMPORTANT
This fault can result in a rapid and significant fouling of the particle filter.
CO.0
NOTESNone
Check the turbocharger pressure sensor connections.
Check the injection computer connections.
Repair if necessary
Check the continuity and insulation against earth of the following connections:
– connection code 3LQ,
– connection code 3LP.
between components 120 and 1071.
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 turbocharging pressure sensor.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF004/EDC16_V58_DF004/EDC16_V5C_DF004/EDC16_V18_DF004/EDC16_V1C_DF004/EDC16_V20_DF004

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DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF004
CONTINUED
CC.1
NOTESNone
Check the turbocharger pressure sensor connections.
Check the injection computer connections.
Repair if necessary.
Check the continuity and insulation from + 12 V of the following connections:
– connection code 3LQ,
– connection code 3LN,
– connection code 3LP,
between components 120 and 1071.
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 turbocharging pressure sensor.
1.DEF
NOTESNone
In the event of a combination of faults with DF003 Atmospheric pressure sensor circuit, display parameter
PR041 Turbocharging pressure.
If this value is stuck at 750 mbar and PR035 Atmospheric pressure is displaying a different value, replace
the turbocharging pressure sensor.
Check the turbocharger pressure sensor connections.
Check the injection computer connections.
Repair if necessary.
Check for continuity and the absence of interference resistance of the following connections:
– connection code 3LQ,
– connection code 3LN,
– connection code 3LP.
between components 120 and 1071.
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, contact the Techline.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.

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DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF005
PRESENT
OR
STOREDENGINE SPEED SENSOR CIRCUIT
1.DEF : No signal
2.DEF : Inconsistent signal
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present during engine starting attempts or while the engine is
running.
Special notes:
Use bornier Ele. 1681 or Ele. 1590 for all operations on the computer connectors.
The engine speed sensor is consistent with the camshaft sensor.
If the fault is present:
– it is impossible to start the engine or the engine stops,
– the level 2 warning light is lit.
Check the engine speed sensor connections.
Repair if necessary.
Check that the sensor is correctly mounted and that the flywheel target is not damaged.
Check that the gap between the engine speed sensor and the engine flywheel is 0.5 to 1.8 mm.
Measure the resistance of the engine speed sensor between terminals A and B of its black connector.
Replace the engine speed sensor if its winding resistance is not 510 Ω < X < 850 Ω for an engine temperature of
20°C.
Check the injection computer connections.
Repair if necessary.
Check for continuity and the absence of interference resistance of the following connections:
– connection code 3BG,
– connection code 3BL.
between components 120 and 149.
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, contact the Techline.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF005/EDC16_V58_DF005/EDC16_V5C_DF005/EDC16_V18_DF005/EDC16_V1C_DF005/EDC16_V20_DF005

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V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF007
PRESENT
OR
STOREDRAIL PRESSURE SENSOR CIRCUIT
CC.0: Short circuit to earth
CO.1: Open circuit or short circuit to + 12 V
1.DEF: Offset at minimum threshold
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present during engine starting attempts or while the engine is
running.
Special notes:
Use bornier Elé. 1681 or Elé. 1590 for all operations on the computer connectors.
If the fault is present:
– the engine will stop immediately,
– restarting will not be possible,
–the level 2 warning light is lit.
Priorities when dealing with a number of faults:
Deal with fault DF013 Sensor supply voltage no. 3 first, if it is present or stored.
CC.0
NOTESNone
Check the rail pressure sensor connectors.
Check the injection computer connections.
Repair if necessary.
Check the continuity and insulation to earth of the following connections:
– connection code 3LY,
– connection code 3LX,
between components 120 and 1032.
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 rail pressure sensor and tighten it to 35 ± 5 N.m.
Observe the safety advice (see Introduction).
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF007/EDC16_V58_DF007/EDC16_V5C_DF007/EDC16_V18_DF007/EDC16_V1C_DF007/EDC16_V20_DF007