battery RENAULT TWINGO 2009 2.G Engine Diesel Injection Workshop Manual

13B-7V6 MR-413-X44-13B000$010.mif
DIESEL INJECTION
Fault finding – Introduction13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
5. 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.
6. SAFETY INSTRUCTIONS
Safety rules must be observed during any work on a component to prevent any material damage or personal 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

13B-14V6 MR-413-X44-13B000$040.mif
DIESEL INJECTION
Fault finding – Function13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
Rail pressure check
The quality of combustion is influenced by the size of the atomised droplets in the cylinder.
In the combustion chamber, smaller fuel droplets will have time to burn fully, and will not produce smoke or unburned
particles. To meet emission control requirements, the droplet size must be reduced and therefore the injection holes
must be smaller.
With smaller holes, less fuel will be able to be introduced at a given pressure, which limits the power. To offset this
disadvantage, the quantity of fuel injected must be increased, which means increased pressure (and more holes in
the injector nozzles). In the Delphi Common Rail injection system, the pressure in the rail can reach 1600 bar
and must be constantly controlled. The measuring circuit comprises an active pressure sensor on the rail connected
to an analogue port on the computer.
The High Pressure pump is supplied at low pressure (5 bar) by a built-in transfer pump. This pump supplies the rail.
The rail filling pressure is controlled by the filling valve (IMV) and the discharge pressure is controlled by the injector
valves. This compensates for pressure drops. The filling actuator enables the high pressure pump to supply
the exact quantity of diesel fuel required to maintain the rail pressure. This mechanism minimises the heat generated
and improves engine output.
In order to discharge the rail using the injector valves, the valves are actuated by short electrical pulses which are:
–short enough not to open the injector (fuel passes through the return circuit from the injectors),
–long enough to open the valves and discharge the rail.
The fuel surplus is sent back to the fuel filter or the tank, according to its flow. If there is no IMV* control, the rail
pressure is limited by a discharge valve on the pump.
IMV*: Filling actuator.
Idling speed regulation
The computer handles the calculation of idling speed. This has to take account of the instantaneous power level to
be supplied, according to the following factors:
–engine coolant temperature,
–gear ratio engaged,
–battery charge,
–electrical consumers (Additional heating, Air conditioning, Fan assembly, heated windscreen, etc.) active
or inactive,
–system faults detected.
Individual injector correction (C2I)
The DCM1.2 system injectors must be calibrated with corrective values so that their flow may be adjusted precisely.
Each injector is calibrated for different pressures on a test bench, and its specifications are shown on a label
attached to the body of the injector holders. These individual correction values are then entered into the computer
memory, which can control the injectors, taking their manufacturing variations into account.

13B-23V6 MR-413-X44-13B000$060.mif
13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
COMPUTER REPLACEMENT OR REPROGRAMMING OPERATIONS
Before removing any old computer as an After-Sales operation, save the following data using the diagnostic
tool:
–The C2I (individual injector correction) parameters and the engine adaptives using command SC003 Save
computer data.
The system can be programmed by the diagnostic socket using the RENAULT CLIP diagnostic tool (refer to
Technical Note 3585A, Computer programming and reprogramming procedure, and follow the instructions
provided by the diagnostic tool).
After replacing or reprogramming the computer
–Switch the ignition off and then on again.
–Use the diagnostic tool command SC001 Enter saved data to restore the C2I and the engine adaptives.
–On Kangoo 2, use the diagnostic tool command SC040 Speed limiter, if necessary.
–Use command AC028 Static test to reinitialise the computer (fan assembly, etc.).
–Switch the ignition off and then on again.
–When changing the pump, refer to the high pressure pump replacement procedure (consult Technical Note
5011A, Repriming Delphi high pressure pumps on K9K engines).
–Activate the starter without releasing the key until the engine starts (the engine start time can be up to
20 seconds).
–Stop the engine (to initialise the computer) and wait 30 seconds.
–Switch the ignition back on and use the diagnostic tool to carry out the following steps:
–Run command VP010 Enter VIN.
–After injection system programming, stored faults may appear on other computers. Clear the memory of these
computers.
–Switch the ignition off and then on again. IMPORTANT
–Switch on the diagnostic tool (mains or cigarette lighter supply).
–Connect a battery charger.
–Switch off all electrical consumers (lights, interior lights, air conditioning, radio/CD, etc.).
Wait for the engine to cool (engine coolant temperature less than 60
°C and air temperature less than 50°C).
IMPORTANT
Before reprogramming the injection computer, move the main cruise control - speed limiter switch to the rest
position. The information about the cruise control or the speed limiter displayed on the instrument panel
disappears.
Otherwise, if the main switch remains in the cruise control or speed limiter position during and after reprogramming,
the cruise control - speed limiter function will not be operational.
The procedure for resetting the function is as follows:
Vehicle ignition on.
Main switch in rest position (the computer then detects the rest position).
Switch in the Cruise control position to activate the Cruise control function.
Switch in the Speed limiter position to activate the Speed limiter function.
IMPORTANT
AFTER A PROGRAMMING OPERATION, DO NOT CONNECT THE BATTERY FOR AT LEAST 30 minutes
(to carry out other work on the vehicle).
DIESEL INJECTION
Fault finding – Replacement of components

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.
V6 MR-413-X44-13B000$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-54
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.
V6 MR-413-X44-13B000$090.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
DF025
PRESENT
OR STOREDPRE-POSTHEATING UNIT DIAGNOSTIC LINEC0: Open circuit
NOTESSpecial notes:
This fault only directs the fault finding with an open circuit.
See the Technical Note Wiring Diagrams for the vehicle.
Check the connection and condition of the heater plug connectors, component codes 680, 681, 682, and 683.
Check the connection and condition of the preheating unit connector, component code 257 or 980.
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 each heater plug, component code 680, 681, 682, or 683.
The resistance must be less than 2 Ω.
Replace the faulty plugs, component codes 680, 681, 682, and 683 (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, 13C, Preheating,
Heater plugs: Removal - Refitting).
Check the connection and condition of connector C (grey 32-track) of the injection computer, component
code 120.
If the connector 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.
Check for +12 V battery on connection BP35 of component 257 (or 980).
Check for the control of the preheating unit on connection 3FF component 257 (or 980).
Check the insulation and continuity of the following connections:
–3FY between connections 257 (or 980) and 120,
–3FF between connections 257 (or 980) 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 preheating unit, component code 257 or 980 (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,
13C, Preheating, Pre-postheating unit: Removal - Refitting).
If the fault is still present, contact the Techline.
DCM1.2_V48_DF025/DCM1.2_V4C_DF025/DCM1.2_V50_DF025/DCM1.2_V54_DF025/DCM1.2_V58_DF025/DCM1.2_V5C_DF025

13B-76
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.
V6 MR-413-X44-13B000$110.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
DF047
PRESENT
OR
STOREDCOMPUTER SUPPLY VOLTAGE
1.DEF: Above maximum threshold
2.DEF: Below minimum threshold
NOTESConditions for applying fault finding procedures to stored faults:
The fault is present when the engine speed is greater than 1000 rpm.
See the Technical Note Wiring Diagrams for the vehicle.
Move the wiring harness between the injection computer, component code 120 and the battery, component
code 107 to see if the status changes (Present Stored).
Look for any wiring damage and check the connection and condition of the battery, component code 107 and its
connections.
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.
Measure the battery voltage when the ignition is switched on.
If the battery voltage is less than 11 V, recharge the battery.
Check the condition and connection of the battery terminals and posts, component code 107.
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.
Check the vehicle's charge circuit (see 87B, Passenger compartment connection unit for the New Twingo
or see 87G, Engine compartment connection unit for Clio III, Modus, Mégane II, Scénic II, and Kangoo 2).
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 injection locking relay connector, component code 238.
Check the connection and condition of the UPC connectors, component code 1337.
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.
DCM1.2_V48_DF047/DCM1.2_V4C_DF047/DCM1.2_V50_DF047/DCM1.2_V54_DF047/DCM1.2_V58_DF047/DCM1.2_V5C_DF047

13B-130
AFTER REPAIRDeal with any faults. Clear the faults from the computer memory.
Switch off the ignition and carry out a road test followed by a test with the diagnostic
tool.
V6 MR-413-X44-13B000$150.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
ET006CODE PROGRAMMED
STATUS DEFINITIONYES: This status indicates that the immobiliser code has been programmed.
NO: This status indicates that the immobiliser code has not been programmed.
NOTESThe injection immobiliser code is not written in the injection computer.
The programming of this code in the injection computer is managed by the UCH.
To carry out programming:
–establish communication with the UCH see 87B, Passenger compartment
connection unit.
–run command SC017 Program injection immobiliser code,
–follow the instructions for the procedure.
As long as this phase has not been completed, ET006 "Code programmed" is "NO".
IMPORTANT:
the immobiliser code is written in the injection computer memory at the end of the
computer auto-feed phase. Do not disconnect the battery before the end of this phase.
Conformity check: Engine stopped, ignition on or engine running.
YESStatus ET006 is YES if dialogue is possible between the UCH computer and the injection
computer and the key code is recognised.
The engine is only authorised to start if the code is recognised by the UCH computer and
if status ET003 Immobiliser is INACTIVE.
In the event of a fault, (see 87B, Passenger compartment connection unit,
conformity check).
DCM1.2_V48_ET006/DCM1.2_V4C_ET006/DCM1.2_V50_ET006/DCM1.2_V54_ET006/DCM1.2_V58_ET006/DCM1.2_V5C_ET006

13B-137
AFTER REPAIRDeal with any faults. Clear the faults from the computer memory.
Switch off the ignition and carry out a road test followed by a test with the diagnostic
tool.
V6 MR-413-X44-13B000$150.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
ET023FAST IDLE SPEED REQUEST
STATUS DEFINITION"PRESENT": The fast idle speed request is present.
"ABSENT": The fast idle speed request is not present.
NOTESSpecial notes:
The idle speed setpoint is dependent on:
–the coolant temperature,
–the emission control programs,
–air conditioning requirements,
–the electrical consumers,
–the battery voltage,
–the gear engaged.
–use of command SC041 "Changing commercial vehicle idle speed" (Kangoo 2)
Conformity check with engine stopped, ignition on or engine running
PRESENTStatus is "PRESENT" when there is an engine load:
–inconsistency between the positions of the brake and accelerator pedals,
–coolant temperature < 80
°C or > 89 °C,
–heating and air conditioning system deactivated,
–with electrical consumers,
–the battery voltage is incorrect.
–or after running command SC041 "Changing commercial vehicle idle speed"
(Kangoo 2)
ABSENTStatus is "ABSENT" when there is no engine load:
–coolant temperature = 80
°C,
–heating and air conditioning system deactivated,
–without electrical consumers,
–the battery voltage is correct.
DCM1.2_V48_ET023/DCM1.2_V4C_ET023/DCM1.2_V50_ET023/DCM1.2_V54_ET023/DCM1.2_V58_ET023/DCM1.2_V5C_ET023

13B-169V6 MR-413-X44-13B000$160.mif
13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
Tool parameterDiagnostic tool title
PR005EGR valve opening setpoint
PR008Rail reference pressure
PR010Idle speed regulation setpoint
PR017Fuel flow
PR030Accelerator pedal position
PR032Inlet pressure
PR035Atmospheric pressure
PR037Refrigerant pressure
PR038Rail pressure
PR051EGR valve position feedback
PR055Engine speed
PR059Inlet air temperature
PR063Fuel temperature
PR064Coolant temperature
PR074Battery voltage
PR077EGR valve position sensor voltage
PR078Inlet pressure sensor voltage
PR080Rail pressure sensor voltage
PR086Pedal potentiometer voltage gang 1
PR088Pedal potentiometer gang 2 voltage
PR089Vehicle speed
PR125Power consumed by the air conditioning compressor
PR130Cruise control setpoint
PR132Air flow
PR147Pedal potentiometer voltage gang 1
PR148Pedal potentiometer voltage gang 2
PR568Pedal position gang 1
PR569Pedal position gang 2
DIESEL INJECTION
Fault finding – Parameter summary table

13B-185
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.
V6 MR-413-X44-13B000$170.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
PR074BATTERY VOLTAGE
PARAMETER
DEFINITIONThis parameter indicates the battery voltage in Volts.
NOTESThere must be no present or stored faults.
Without electrical consumers (radio, air conditioning, fan assemblies, headlights,
etc.).
Conformity check: Engine stopped and ignition on, or engine running and engine coolant
temperature > 80
°C
12 V < PR074 < 14.4 V.
Ignition on then
at idle speedIf the voltage is at minimum:
Check the battery and the charge circuit (see 87B, Passenger compartment connection unit
for the New Twingo or see 87G, Engine compartment connection unit for Clio III, Modus,
Mégane II, Scénic II and Kangoo 2).
If the voltage is at maximum:
Check that the charging voltage is correct with and without electrical consumers switched on.
DCM1.2_V48_PR074/DCM1.2_V4C_PR074/DCM1.2_V50_PR074/DCM1.2_V54_PR074/DCM1.2_V58_PR074/DCM1.2_V5C_PR074