wiring RENAULT SCENIC 2010 J95 / 3.G Engine And Pheripherals DCM 1.2 Injection Workshop Manual

13B-2V10 MR-372-J84-13B100$010.mif
13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
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 document):
–Assisted fault finding (integrated into the diagnostic tool), Dialogys.
Wiring Diagrams:
–Visu-Schéma.
Type of diagnostic tools
–CLIP
Special tooling required
3. REMINDERS
Procedure
To run fault finding on the vehicle computers, switch on the ignition.
Depending on the type of vehicle equipment, proceed as follows:Vehicle(s): CLIO III, MODUS, MEGANE II / SCENIC II, New
Twingo, Kangoo 2.Name of computer: DCM1.2 injection
Engines: K9K 718, 724, 740, 750, 752, 766, 768, 800, 802,
812Program No.: 4D
Function concerned: Direct diesel injection, DELPHI,
COMMON RAIL, MULTI INJECTION.Vdiag No.: 48, 4C, 50, 54, 58, 5C
Special tooling required
Diagnostic tool
Multimeter
Elé. 1590 112-track computer bornier
Elé. 1681 Universal bornier
Mot 1711 Injector flow measuring kit
For vehicles with radio frequency remote control/key,
switch on the ignition with the key.
For vehicles with a Renault card,
With the vehicle card in the card reader,
Press and hold the start button (+ 5 seconds) with starting conditions not met,
Connect the diagnostic tool and perform the required operations.
DCM1.2_V48_PRELI/DCM1.2_V4C_PRELI/DCM1.2_V50_PRELI/DCM1.2_V454_PRELI/DCM1.2_V58_PRELI/DCM1.2_V5C_PRELI
DIESEL INJECTION
Fault finding – Introduction

13B-3V10 MR-372-J84-13B100$010.mif
DIESEL INJECTION
Fault finding – Introduction13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
To cut off + after ignition feed, proceed as follows:
Faults
Faults are declared present or stored (depending on whether they appeared in a certain context and have
disappeared since, or whether they remain present but are not diagnosed within the current context).
The present or stored status of faults should be taken into consideration when using the diagnostic tool after
switching on 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 Notes section.
If the fault is confirmed when the instructions 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 defective,
–the condition of the wires.
Refer to paragraphs 4.1 Checking wiring and 4.2 Checking 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. Note:
the left and right-hand xenon bulb computers are powered when the dipped headlights are lit.
Therefore fault finding can only be carried out on them after the ignition has been switched on in fault finding mode
(forced + after ignition feed) and the dipped headlights have been switched on.
For vehicles with a radio frequency remote control - key, use the key to switch off the ignition.
For vehicles with a Renault card,
press the Start button twice briefly (less than 3 seconds),
check that the forced + after ignition feed has been cut off by checking that the computer warning lights on
the instrument panel have extinguished.
A synopsis of the general procedure to follow is provided on the following page in the form of a flow chart.

13B-5V10 MR-372-J84-13B100$010.mif
DIESEL INJECTION
Fault finding – Introduction13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
4. FAULT FINDING PROCEDURE (continued)
4.1 Wiring check
Fault finding problems
Disconnecting the connectors and/or handling 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.
Physical inspection
While manipulating the wiring, use either the diagnostic tool to detect a change in status from "stored" to "present",
or use 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 5 V. The correct measured value is 0 V.
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 should
be 0 V.
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: 1 Ω ± 1 Ω 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 1 Ω ± 1 Ω
Checking the supply
This check may be carried out using a test light (21 W or 5 W depending on the maximum authorised load).

13B-6V10 MR-372-J84-13B100$010.mif
DIESEL INJECTION
Fault finding – Introduction13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
4.2 Connector check
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 spring contact of the connector when the wire is pulled slightly.
–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.
5. 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 seals (1 for each wire), check that the unit seals 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 the 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. 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 2 types of connections:
–Connector/Connector.
–Connector/Device.

13B-29
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V10 MR-372-J84-13B100$090.mif
13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
DF001
PRESENT
OR STOREDCOOLANT TEMPERATURE SENSOR CIRCUITCO.1: Open circuit or short circuit to +12 V
CC.0: Short circuit to earth
NOTESSpecial notes:
If fault DF001 is present, the preheating time is greater than 10 seconds and the engine
fan switches on at low speed (Fan assembly 1). If there is a fault on Fan assembly 1,
then on vehicles fitted with air conditioning, Fan assembly 2 switches on.
See the Technical Note Wiring Diagrams for the vehicle.
Check the connection and condition of the coolant temperature sensor connector, component code 244.
Check the connection and condition of connector B (brown 48-track) of the injection computer, component
code 120.
If the connector(s) is faulty and if there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Measure the resistance of component 244 between connections 3JK and 3C.
If the resistance of the coolant temperature sensor is not:
at –40
°C: 68780 ΩΩ Ω Ω
< X < 82780 ΩΩ Ω Ω

at –10
°C: 11332 ΩΩ Ω Ω
< X < 13588 ΩΩ Ω Ω

at 25
°C: 2140 ΩΩ Ω Ω
< X < 2364 ΩΩ Ω Ω

at 50
°C: 772 ΩΩ Ω Ω
< X < 850 ΩΩ Ω Ω

at 80
°C: 275 ΩΩ Ω Ω
< X < 291 ΩΩ Ω Ω

at 110
°C: 112 ΩΩ Ω Ω
< X < 118 ΩΩ Ω Ω

at 120
°C: 86 ΩΩ Ω Ω
< X < 90 ΩΩ Ω Ω
,
replace the coolant temperature sensor, component code 244 (see MR 364 (Mégane II), MR 370 (Scénic II),
MR 385 (Modus), MR 392 (Clio III), MR 411 (New Twingo), MR 417 (Kangoo 2) Mechanical, 19A, Cooling,
Coolant temperature sensor: Removal - Refitting).
Check the insulation and continuity of the following connections:
–3JK between components 120 and 244,
–3C between components 120 and 244.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
If the fault is still present, replace the coolant temperature sensor, component code 244 (see MR 364 (Mégane II),
MR 370 (Scénic II), MR 385 (Modus), MR 392 (Clio III), MR 411 (New Twingo), MR 417 (Kangoo 2) Mechanical,
19A, Cooling, Coolant temperature sensor: Removal - Refitting).
If the fault is still present, contact the Techline.
DCM1.2_V48_DF001/DCM1.2_V4C_DF001/DCM1.2_V50_DF001/DCM1.2_V54_DF001/DCM1.2_V58_DF001/DCM1.2_V5C_DF001
DIESEL INJECTION
Fault finding – Interpretation of faults

13B-30
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V10 MR-372-J84-13B100$090.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
DF002
PRESENT
OR STOREDAIR TEMPERATURE SENSOR CIRCUITCO.1: Open circuit or short circuit to +12 V
CC.0: Short circuit to earth
1.DEF: inconsistency
NOTESDepending on the engine type, the air temperature is given by the air temperature
sensor, which is either on the air flowmeter or in place of the air flowmeter on K9K 724,
740, 766, 768, and 812 engines only.
See the Technical Note Wiring Diagrams for the vehicle.
The air temperature sensor in the flow sensor has a separate electrical circuit.
Move the wiring between the computer and the air temperature sensor to see if a change of status occurs
(present stored).
Look for any wiring damage and check the connection and condition of the air temperature sensor and its
connections.
Check the connection and condition of the injection computer connector.
If the connector(s) is faulty and if there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Measure the resistance of component 272 between connections 3JQ and 3B.
If the resistance of the air temperature sensor is not:
(theoretical values for engines with flowmeter)
at -10
°C: 8716 ΩΩ Ω Ω
< X < 9688 ΩΩ Ω Ω
at 0
°C: 5497 ΩΩ Ω Ω
< X < 6051 ΩΩ Ω Ω
at 10
°C: 3553 ΩΩ Ω Ω
< X < 3875 ΩΩ Ω Ω
at 20
°C: 2353 ΩΩ Ω Ω
< X < 2543 ΩΩ Ω Ω
at 30
°C: 1613 ΩΩ Ω Ω
< X < 1729 ΩΩ Ω Ω
(theoretical values for engines without flowmeter)
at -10
°C: 8623 ΩΩ Ω Ω
< X < 10454 ΩΩ Ω Ω
at 25
°C: 1928 ΩΩ Ω Ω
< X < 2174 ΩΩ Ω Ω
at 50
°C: 763 ΩΩ Ω Ω
< X < 857 ΩΩ Ω Ω
,
replace the air temperature sensor.
DCM1.2_V48_DF002/DCM1.2_V4C_DF002/DCM1.2_V50_DF002/DCM1.2_V54_DF002/DCM1.2_V58_DF002/DCM1.2_V5C_DF002

13B-31
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V10 MR-372-J84-13B100$090.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
DF002
CONTINUED
Check the insulation and continuity of the following connections:
–3JQ between components 120 and 272,
–3B between components 120 and 272.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
If the fault is still present, replace the air flowmeter or the air temperature sensor, component code 272
(see MR 364 (Mégane II), MR 370 (Scénic II), MR 385 (Modus), MR 392 (Clio III), MR 411 (New Twingo),
MR 417 (Kangoo 2) Mechanical, 12A, Fuel mixture, Air flowmeter: Removal - Refitting).
If the fault is still present, contact the Techline.

13B-32
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V10 MR-372-J84-13B100$090.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
DF003
PRESENT
OR STOREDATMOSPHERIC PRESSURE SENSOR CIRCUITCO.0: Open circuit or short circuit to earth
CC.1: Short circuit to +12 volts
NOTESSpecial note:
The atmospheric pressure sensor is incorporated in the computer.
See the Technical Note Wiring Diagrams for the vehicle.
Look for any wiring damage and check the condition and connection of the injection computer connectors,
component code 120.
Move the wiring between the injection computer, component code 120 and the battery, component code 107
to see if a change of status occurs (Present Stored).
Look for any wiring damage and check the connection and condition of the battery, component code 107
and its connections.
If the connector(s) are faulty and if there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair) repair the connector(s), otherwise replace the wiring.
Measure the battery voltage when the ignition is switched on.
If the battery voltage is less than 11 V, recharge the battery.
Check the connection and condition of the battery terminals and posts, component code 107.
Check the connection and condition of connector A (black 32-track) of the injection computer, component
code 120.
Check the connection and condition of the connector of the injection locking relay or of the UPC, according to
the vehicle.
If the connector(s) are faulty and if there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair) repair the connector(s), otherwise replace the wiring.
DCM1.2_V48_DF003/DCM1.2_V4C_DF003/DCM1.2_V50_DF003/DCM1.2_V54_DF003/DCM1.2_V58_DF003/DCM1.2_V5C_DF003

13B-33
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V10 MR-372-J84-13B100$090.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
DF003
CONTINUED
Check the insulation and continuity of the following connections:
On K9K 740 engines only:
–AP29 between components 120 and 1016,
–NH between component 120 and earth,
–3FB between components 120 and 238.
For the other engine suffixes:
–AP15 between components 120 and 1337,
–NH or N between component 120 and earth,
–3FB between components 120 and 1337,
–3FB1 between components 120 and 1337,
–3FB2 between components 120 and 1337.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
If the fault is still present, contact the Techline.

13B-34
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V10 MR-372-J84-13B100$090.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
DF005
PRESENT
OR STOREDENGINE SPEED SENSOR CIRCUIT1.DEF: Inconsistency
2.DEF: No signal
3.DEF: Too many additional teeth
4.DEF: Teeth missing
5.DEF: Additional teeth
6.DEF: Too many teeth missing
NOTESSpecial note:
If 1.DEF, 2.DEF, 3.DEF, or 6.DEF is present: the engine stops and the level 2 warning
light illuminates, with the message Faulty injection displayed on the instrument panel.
If 4.DEF or 5 DEF is present: the engine performance is reduced to 75% and the level
1 warning light illuminates.
Conditions for applying fault finding procedures to stored faults:
The fault is present when the starter motor is operating or the engine is running at idle
speed.
See the Technical Note Wiring Diagrams for the vehicle.
Check the connection and condition of the engine speed sensor connector, component code 149.
Check the connection and condition of connector B of the injection computer, component code 120.
If the connector(s) is faulty and if there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Measure the resistance of the engine speed sensor, component code 149 between connections 3BL and 3BG.
If the resistance of the engine speed sensor, component code 149 is not between 510 Ω et 850 Ω (at 20
°C), replace
the engine speed sensor (see MR 364 (Mégane II), MR 370 (Scénic II), MR 385 (Modus), MR 392 (Clio III), MR
411 (New Twingo), MR 417 (Kangoo 2) Mechanical, 13B Diesel injection, Crankshaft position sensor:
Removal - Refitting).
Check the insulation and continuity of the following connections:
–3BG between components 149 and 120,
–3BL between components 149 and 120.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
If the fault is still present, replace the engine speed sensor, component code 149 (see MR 364 (Mégane II),
MR 370 (Scénic II), MR 385 (Modus), MR 392 (Clio III), MR 411 (New Twingo), MR 417 (Kangoo 2) Mechanical,
13B Diesel injection, Crankshaft position sensor: Removal - Refitting).
If the fault is still present, contact the Techline.
DCM1.2_V48_DF005/DCM1.2_V4C_DF005/DCM1.2_V50_DF005/DCM1.2_V54_DF005/DCM1.2_V58_DF005/DCM1.2_V5C_DF005