sensor RENAULT SCENIC 2009 J84 / 2.G Air Conditioning Climate Control User Guide

62B-43
CLIMATE CONTROL
Fault finding – Fault Finding Chart62B
V3 MR-372-J84-62B000$110.mif
Vdiag No.: 44
CLIMATE CONTROL
Fault finding – Fault Finding Chart
ALP 1 No dialogue with the computer
NOTESNone.
Try the diagnostic tool on another vehicle.
Check:
–the connection between the diagnostic tool and the diagnostic sensor (wiring in good condition),
–the connection between the vehicle's diagnostic sensor and the diagnostic socket (cable in good condition),
–the injection, engine and passenger compartment fuses.
Check for + 12 V battery on track 16, and + 12 V after ignition feed on track 1 and an earth on track 5 and
on track 4 of the diagnostic socket.
Repair if necessary.
Disconnect the connector from the climate control computer in order to check the insulation, continuity and
the absence of interference resistance of the following connections:
Climate control computer 12-track connector:
Track 11 + before ignition (see the vehicle wiring diagram)
Track 10 + accessories feed (see the vehicle wiring diagram)
Track 6 Earth
Track 7 Track 6 of the diagnostic socket (CAN H)
Track 1 Track 14 of the diagnostic socket (CAN L)
Repair if necessary (see the vehicle wiring diagram).
AFTER REPAIRPerform a complete check using the diagnostic tool.
ACREG X84 1.1
Edition 2

62B-46
CLIMATE CONTROL
Fault finding – Fault Finding Chart62B
V3 MR-372-J84-62B000$110.mif
Vdiag No.: 44
ALP 3 Air flow fault
NOTESOnly consult this customer complaint after a complete check using the diagnostic
tool.
Check that the customer knows how to work the air conditioning system properly.
Is the passenger compartment fan working?
YES
Check that the air circuit (cabin filter, scuttle panel grille, air ducts and ventilation grilles, etc.) is not blocked.
Ensure that the blower blades are in good condition.
Repair, clean or change the cabin filter if necessary.
With the cabin filter removed, put your
hand into the housing to ensure that the
evaporator is not obstructed and that
there is no ice.
Is the evaporator obstructed?
NO
Ensure that the blower unit is properly sealed. Also check that the air distribution ducts (right-hand and left-hand,
upper and lower) are correctly connected to the housing as well as the refrigeration pipe in the glove box (if the
customer complains about a feeling of cold air on the passenger's side).
Repair if necessary.
Check that the air recirculation flap does not remain closed when in the recirculation position. On the diagnostic
tool, status ET062 "Recirculation flap position" should display OPEN (the flap can be seen by removing the
windscreen frame).
Repair if necessary (apply the fault finding procedure for fault DF021 Recirculation motor circuit).
Does the fault disappear when the air distribution is
changed?
NO
NO
YES
YESRepair, see ALP 5
Remove the evaporator and clean if it is obstructed.
If there is ice on the evaporator, carry out a conformity
check of the temperature sensors (internal, external
and engine coolant temperatures). Depending on
vehicle equipment, check that the interior air
temperature sensor micro-turbine is working correctly
(if it is faulty it may cause the measurement to be
incorrect).
Replace any faulty components.
Ensure that all the air vents
are open.
If the fault is still present,
see ALP 2.
AFTER REPAIRPerform a complete check using the diagnostic tool.
ACREG X84 1.1
Edition 2

62B-49
CLIMATE CONTROL
Fault finding – Fault Finding Chart62B
V3 MR-372-J84-62B000$110.mif
Vdiag No.: 44
ALP 4
CONTINUED
Is it an air flow fault?
NO
Is it a heater performance fault?
NO
Check that the air recirculation flap does not remain closed when in the recirculation position. On the diagnostic
tool, status ET062 "Recirculation flap position" should display OPEN (the flap can be seen by removing the
windscreen frame).
Repair if necessary (apply the fault finding procedure for fault DF021 Recirculation motor circuit).
Is the fault still present?
YES
Carry out a conformity check of the temperature sensors
(internal, external and engine coolant temperature).
Depending on vehicle equipment, check that the interior air
temperature sensor micro-turbine is working correctly (if it is
faulty it may cause the measurement to be incorrect).
Replace any faulty components.YES
YESSee ALP 3.
See ALP 6.
NO
End of fault finding procedure.
AFTER REPAIRPerform a complete check using the diagnostic tool.
ACREG X84 1.1
Edition 2

62B-54
CLIMATE CONTROL
Fault finding – Fault Finding Chart62B
V3 MR-372-J84-62B000$110.mif
Vdiag No.: 44
ALP 13 No control panel lighting
NOTESOnly refer to this customer complaint after a full check of the multiplex network
and the air conditioning with the fault finding tool.
Special notes:
With the ignition on, the control panel screen is permanently on but the panel buttons
only light up when the sidelights are switched on.
Note:
If the external temperature sensor is faulty, the climate control computer is
switched on 5 seconds after the ignition is switched on (this allows a fault to be
identified as fault finding cannot be performed on the external temperature sensor
by the UCH).
Is the fault common to other components (instrument panel,
multifunction display, electric window buttons, etc.)?
YES
Switch on the ignition and switch on the side lights to check
there is a 12 V supply on track 6 of the brown 12-track
connector (PPH2) of the Protection and Switching Unit.
Is there a 12 V supply?
YES
Check the connection and the condition of the connectors at the air conditioning control panel
output.
Repair if necessary.
Check the insulation, continuity and absence of interference resistance on the following
connection:
Air conditioning computer 12-track connector
track 9
Repair if necessary.Protection and Switching Unit brown 12-track
(PPH2) connector
track 6
NO
NOPerform fault finding on the
protection and switching unit.
AFTER REPAIRPerform a complete check using the diagnostic tool.
ACREG X84 1.1
Edition 2

62B - 59
CLIMATE CONTROL
Fault finding – Help62B
V3 MR-372-J84-62B000$120.mif
Vdiag No.: 44
Electrical specifications of the temperature sensors according to temperature
(tolerance: ± 5%).
Interior temperature sensor
Temperature Sensor resistance Temperature Sensor resistance
- 30 ˚C 175200 Ω25
°° ° °
C10000 ΩΩ Ω Ω
- 25 ˚C 129300 Ω26 ˚C 9574 Ω
- 20 ˚C 96360 Ω27 ˚C 9168 Ω
- 15 ˚C 72500 Ω28 ˚C 8783 Ω
- 10 ˚C 55050 Ω29 ˚C 8416 Ω
- 5 ˚C 42160 Ω30 ˚C 8059 Ω
0 ˚C 32560 Ω35 ˚C 6535 Ω
5 ˚C 25340 Ω40 ˚C 5330 Ω
10 ˚C 19870 Ω45 ˚C 4372 Ω
15 ˚C 15700 Ω50 ˚C 3606 Ω
16 ˚C 14991 Ω55 ˚C 2989 Ω
17 ˚C 14318 Ω60 ˚C 2490 Ω
18 ˚C 13679 Ω
19 ˚C 13074 Ω
20 ˚C 12490 Ω
21 ˚C 11942 Ω
22 ˚C 11422 Ω
23 ˚C 10928 Ω
24 ˚C 10458 Ω
ACREG X84 1.1
Edition 2