air conditioning RENAULT SCENIC 2010 J95 / 3.G Engine And Pheripherals DCM 1.2 Injection User Guide

13B-117
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$120.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 50
DF489
PRESENT OR
STOREDAIR CONDITIONING COMPRESSOR CONTROLCC.1: Short circuit to + 12 volts
C0.0: Open circuit or short circuit to earth
NOTESConditions for applying the fault finding procedure to stored faults
The fault is considered present when the engine is running.
Special notes:
The heating and air conditioning system request is not longer possible.
The compressor is still active, risk of irreparable damage to the compressor (loss of
capacity). The customer is complaining that the air conditioning is operating
continuously.
See Technical Note Wiring Diagrams of the vehicle concerned
Check the connection and condition of the injection computer connector, component code 120.
Check the connection and condition of the air conditioning compressor relay connector, component code 5845.
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.
Run command AC180 Air conditioning compressor relay control.
If the command does not work, check, with the ignition on, for +12 V on connection 3FB of component 584 and
for earth on connection 38K of component 584.
Check the insulation and continuity of the following connections:
–38K between components 584 and 120,
–3FB between components 584 and 238.
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, run fault finding on the climate control computer (see 62B, Climate control).
If the fault is still present, check the relay and replace it if necessary.
If the fault is still present, contact the Techline.
DCM1.2_V50_DF489

13B-124
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$120.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
DF1070
PRESENT OR
STOREDCOLD LOOP1.DEF: Jammed component
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present with the engine running and with a heating and air
conditioning system request.
Priorities when dealing with a number of faults:
–DF049 Refrigerant sensor circuit if it is present or stored.
When the fault is present or stored, the heating and air conditioning system is inhibited. There is no longer any air
conditioning.
Check fuse F22 (10 A) of the UPC, component code 1337.
Check the connector of the air conditioning compressor, component code 171.
If the connector is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Check the air conditioning compressor wiring.
If the wiring is faulty and there is a repair procedure (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
Manually check if the compressor is jammed (turn the clutch plate manually to check that there is no point of
resistance). In the event of jamming, replace the air conditioning compressor (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, 62A,
Air conditioning, Compressor: Removal - Refitting).
Top up the refrigerant, check for any leaks, and repair if necessary (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, 62A, Air
conditioning, Refrigerant circuit: Draining - Filling).
DCM1.2_V48_DF1070/DCM1.2_V4C_DF1070/DCM1.2_V50_DF1070/DCM1.2_V54_DF1070/DCM1.2_V58_DF1070/DCM1.2_V5C_DF1070

13B-126V10 MR-372-J84-13B100$140.mif
13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
* RCH: Passenger compartment heating resistor.Tool status Diagnostic tool title
ET001+ After ignition computer feed
ET003Engine immobiliser
ET004Air conditioning authorisation
ET006Code programmed
ET007Pre-postheating control
ET008EGR solenoid valve control
ET021High speed fan assembly request
ET022Low speed fan assembly request
ET023Fast idle speed request
ET038Engine
ET042Cruise control/Speed limiter
ET076Starting
ET077Impact detected
ET079Air conditioning present
ET088Compressor actuation request
ET111RCH* number set
ET112RCH* cut-off
ET405Clutch pedal switch
ET415Deactivation of cruise control/speed limiter
ET563Flow capacity function
ET637New pump chamber filling
ET703Cruise control - speed limiter button
ET704Brakecontact No 1
ET705Brakecontact No 2
ET741Optional vehicle speed restriction
ET800Fast idle function
DIESEL INJECTION
Fault finding – Status summary table

13B-129
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.
V10 MR-372-J84-13B100$150.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
ET004AC AUTHORISED
STATUS DEFINITIONYES: This status indicates that the air conditioning is active.
NO: This status indicates that the air conditioning is inactive.
Conformity check: Engine stopped and ignition on, or engine running and engine coolant
temperature > 80
°C
YESThe air conditioning authorisation only changes to YES if:
–the air conditioning request has been made by the driver (air conditioning switch in AC
position with minimum ventilation),
–the engine is not under full load,
–the air conditioning system is not faulty.
NOStatus ET004 remains at NO under the following conditions:
–Vehicle stopped with the ignition on,
–faults present in the air conditioning circuit,
–no air conditioning request made by the driver,
–engine under full load.
If status ET004 remains NO then the air conditioning should be authorised; check:
–that the air conditioning compressor is activated correctly,
–the air conditioning system feed fuses,
the presence of refrigerant in the air conditioning circuit.
DCM1.2_V48_ET004/DCM1.2_V4C_ET004/DCM1.2_V50_ET004/DCM1.2_V54_ET004/DCM1.2_V58_ET004/DCM1.2_V5C_ET004

13B-136
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.
V10 MR-372-J84-13B100$150.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
ET022LOW-SPEED FAN REQUEST
STATUS DEFINITION"ACTIVE": The low speed fan assembly request is active.
"INACTIVE": The low speed fan assembly request is not active.
Conformity check with engine stopped, ignition on or engine running
ACTIVEThe injection computer requests the activation of the low speed GMV when:
–the engine coolant temperature is above 96˚C,
–the injection computer has system faults that could lead to the engine overheating,
–the air conditioning is switched on by the driver.
When the low-speed fan assembly is supplied:
–status ET022 Low speed fan request becomes ACTIVE.
Fan assembly activation is controlled by the UPC.
INACTIVEThe low-speed fan assembly stops when:
–the engine coolant temperature is below 94˚C,
–no fault which could cause engine overheating is present in the injection
system.
–the air conditioning is not switched on by the driver.
Fan assembly activation is controlled by the UPC.
DCM1.2_V48_ET022/DCM1.2_V4C_ET022/DCM1.2_V50_ET022/DCM1.2_V54_ET022/DCM1.2_V58_ET022/DCM1.2_V5C_ET022

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.
V10 MR-372-J84-13B100$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-148
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.
V10 MR-372-J84-13B100$150.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
ET079AIR CONDITIONING PRESENT
STATUS DEFINITIONYES: This status indicates that air conditioning is present on the vehicle.
NO: This status indicates that air conditioning is not present on the vehicle.
NOTESThe heating and air conditioning system is present depending on the vehicle's
equipment level.
Conformity check: Engine stopped, ignition on or engine running.
YES or NO, depending on the vehicle equipment.
DCM1.2_V48_ET079/DCM1.2_V4C_ET079/DCM1.2_V50_ET079/DCM1.2_V54_ET079/DCM1.2_V58_ET079/DCM1.2_V5C_ET079

13B-149
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.
V10 MR-372-J84-13B100$150.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
ET088REQUEST TO START COMPRESSOR
STATUS DEFINITIONACTIVE: the compressor activation request is active.
INACTIVE: the compressor activation request is not active.
Conformity check: Engine stopped and ignition on, or engine running and engine coolant
temperature > 80
°C
ACTIVEStatus ET088 becomes ACTIVE if there has been a request for air conditioning (press
on AC or AUTO button, with maximum cold request) and status ET004 is YES.
The selection is made on the air conditioning control panel, the request for air
conditioning is transmitted to the UCH which in turn transmits the request to the injection
computer which either authorises or does not authorise compressor activation. If the
injection computer authorises activation of the compressor, it sends the compressor
activation request to the UPC and status ET088 Compressor activation request
becomes ACTIVE (Climate control).
If the vehicle is equipped with manual air conditioning, the air conditioning request is
transmitted from the air conditioning control panel to the UCH which then accepts or does
not accept the air conditioning compressor coming on depending on the operating status
of the passenger compartment fan. When the request has been accepted, the request
to switch on the compressor is transmitted to the injection computer which either
authorises or does not authorise the compressor to start.
If the injection computer authorises compressor activation, it sends the compressor
activation request to the UPC and status ET088 Compressor activation request
becomes ACTIVE.
If there has been no compressor activation request and status ET088 remains ACTIVE,
see 62A, Air conditioning.
Note: Compressor operation is only authorised when the engine is running.
Compressor activation is commanded by the UPC.
INACTIVEStatus ET088 is INACTIVE when no air conditioning request has been made. When
compressor activation is not authorised (ET004 is NO or when the driver switches the
air conditioning off.
If a compressor activation request has been made and status ET088 remains INACTIVE
see 62A, Air conditioning.
Note: Compressor operation is only authorised when the engine is running.
Compressor activation is commanded by the UPC.
DCM1.2_V48_ET088/DCM1.2_V4C_ET088/DCM1.2_V50_ET088/DCM1.2_V54_ET088/DCM1.2_V58_ET088/DCM1.2_V5C_ET088

13B-169V10 MR-372-J84-13B100$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.
V10 MR-372-J84-13B100$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