et004 RENAULT SCENIC 2010 J95 / 3.G Air Conditioning Workshop Manual

62A - 15
AIR CONDITIONING
Fault finding - Mode of operation62A
V4MR-372-J84-62A000$010.mif
Manual air conditioning
and
Climate control
Compressor control flowchart
ET143 Air
conditioning request 1
(climate control)Climate control panelET029 Air
conditioning button
(manual air
conditioning)
ET030 Air
conditioning request 2UCH
ET088 Compressor
engagement requestInjection computer
ET004 Air conditioning
authorisation
UPC
(Power and Switching Unit)
Control via wire
connection
Special notes:
This flowchart shows the path of the
compressor engagement request.
Components which may block this request
are not listed (passenger compartment
blower operation signal for the UCH on
manual air conditioning version, correct
refrigerant fluid pressure for the injection,
etc.).
If the compressor does not engage (one of
the requests not transmitted): carry out a
conformity check. Climate
control
compressor
Key:
Multiplex signals.
Wire connections.
CLIM X84 1.1
Edition 2
MR-372-J84-62A000$040.mif

62A - 18
AIR CONDITIONING
Fault finding - Conformity check62A
V4
Manual air conditioning
and
Climate control
Subsystem: cold loop (continued 1)
Computer
(signal generator)Parameter or status
checked or actionDisplay and Notes Fault finding
UCHET030:Air conditioning
request 2.INACTIVE
(engagement of the
compressor is only
authorised when the engine
is running).If there is a fault, refer to the
fault finding procedure
for this status.
NOTE: This status
represents the request from
the UCH to the injection
computer to engage the
compressor (refer to the
flowchart in the general
operation section).
PR002:Exterior
temperature.X = exterior temperature
± 5 ˚C
(invalid value: 215 ˚C)If there is a fault, refer to the
fault finding procedure
for this parameter.
ET015:Passenger
compartment
blower.INACTIVE
(according to test
conditions: see Notes).If there is a fault, refer to the
fault finding procedure
for this status.
NOTE: This status is only
operative for manual air
conditioning (and heating
versions without air
conditioning).
ET091:Engine running.NO
NOTE: This status is
displayed by the UCH but it
is generated by the injection
computer.If there is a fault, refer to the
fault finding procedure
for this status.
(Injection Technical Note).
InjectionET079:Air conditioning
present.YES
(automatic injection
computer configuration).If the status displays NO,
refer to the fault finding
procedure for this status.
PR064:Coolant
temperature.X = engine coolant
temperature.If there is a fault, refer to the
fault finding procedure
for this parameter.
ET004:Air conditioning
authorisation.NO
(no authorisation with
engine stopped).If there is a fault, refer to the
fault finding procedure
for this status.
CLIM X84 1.1
Edition 2
MR-372-J84-62A000$060.mif

62A - 31
AIR CONDITIONING
Fault finding - Conformity check62A
V4
Manual air conditioning
and
Climate control
Subsystem: cold loop (continued 1)
Computer
(signal generator)Parameter or status
checked or actionDisplay and Notes Fault finding
UCHET030:Air conditioning
request 2.ACTIVEIf there is a fault, refer to the
fault finding procedure
for this status.
NOTE: This status
represents the request from
the UCH to the injection
computer to engage the
compressor (refer to the
flowchart in the general
operation section).
PR002:Exterior
temperatureX = exterior temperature
± 5 ˚C
(invalid value: 215 ˚C)If there is a fault, refer to the
fault finding procedure
for this parameter.
ET015:Passenger
compartment
blower.ACTIVE
(according to test
conditions: see Notes).If there is a fault, refer to the
fault finding procedure
for this status.
Note: This status is only
operative for manual air
conditioning(and heater
versions without air
conditioning).
ET091:Engine running:YES
NOTE: This status is
displayed by the UCH but it
is generated by the injection
computer.If there is a fault, refer to the
fault finding procedure
for this status.
(Injection Technical Note).
InjectionET079:Air conditioning
present.YES
(automatic injection
computer configuration).If the status displays NO,
consult the fault finding
procedure for this status.
PR064:Coolant
temperature.X = engine coolant
temperature.If there is a fault, refer to the
fault finding procedure
for this parameter.
ET004:Air conditioning
authorisation.YESIf the status displays NO,
consult the fault finding
procedure for this status.
CLIM X84 1.1
Edition 2
MR-372-J84-62A000$060.mif

AIR CONDITIONING
Fault finding - Fault Finding Chart62A
62A-50V4 MR-372-J84-62A000$080.mif
Manual air conditioning
and
Climate control
ALP 8
CONTINUED 1
With the engine running at idle speed, use the
diagnostic tool to check that the UCH does in fact
send the start air conditioning request to the
injection computer. Status ET030 AIR
CONDITIONING REQUEST 2 should display
ACTIVE.
Is the correct status displayed? NO
YES YES
View the following states on the diagnostic tool
(cold loop subsystem screen):
–ET004 AIR CONDITIONING
AUTHORISATION: this status should be
displayed as YES,
–ET088 COMPRESSOR ENGAGEMENT
REQUEST: this status should be displayed as
ACTIVE.
Are the correct statuses displayed? YES
NO
Check that the injection computer is correctly configured. Status ET079 AIR CONDITIONING PRESENT should
display YES (cold loop sub-function screen).
NOTE: Status ET079 is present in all injection systems.
S3000 injection (K4J, K4M, F4R and F4RT engines) has 2 additional configuration readings:
–LC009 "AIR CONDITIONING" should display "CONNECTED",
–LC016 "AIR CONDITIONING PRESSURE SIGNAL MANAGEMENT" should display "WITH".
Is the injection computer correctly configured?
YES NO
Reconfigure the injection computer (automatic
configuration: see the "Introduction" section in the
Injection note).
Check that the UCH is correctly configured
by viewing the configuration reading
LC013 TYPE OF AIR CONDITIONING.
Reconfigure the UCH if necessary.
Check that the UCH is receiving the engine
operating status and passenger
compartment fan signals correctly (for
manual air conditioning).
On the heating sub-function screen, status
ET091 ENGINE RUNNING should display
YES and status ET015 PASSENGER
COMPARTMENT FAN should display
ACTIVE.
Are the correct statuses displayed?
NO
Carry out a fault finding procedure on the
multiplex network, the injection
(interpretation of status ET091), and the
UCH (interpretation of status ET015).
AFTER REPAIRPerform a complete check using the diagnostic tool.
CLIM X84 1.1
Edition 2