cooling RENAULT KANGOO 1998 KC / 1.G Heating And Ventilation Workshop Manual

AIR CONDITIONING
General
62
A Passenger compartment
B Engine compartment
C Exterior air
D To air mixing unit
E Scuttle panel grille
F Exterior or recirculated air
1 Compressor with variable capacity
2 Condenser
3 Dehydration canister
4 Pressure sensor
5 High pressure valve
6 Pressure relief valve
7 Evaporator
8 Low pressure valve
9 Heating/ventilation fan
10 Cooling fan
11 Engine radiator
12 High pressure fluid
13 Low pressure vapour
14 High pressure vapour
Consumables:
- Compressor oil
SANDEN SP 10: 135 cm3 ± 15
- Coolant
R134a: 650 g ± 35
- Compressor
SANDEN SD 7V 16
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AIR CONDITIONING
Fault finding - Interpretation of XR25 bargraphs62
KANGOO
ALL TYPES
Enter G0** on the XR25.
Check that the system operates correctly.AFTER
REPAIR
Left-hand bargraph 6 illuminated
FAN ASSEMBLY (2) CONTROL
XR25 assistance :C.O.open circuit
C.C.1short circuit to 12 volts
6
NOTES
Fiche n° 61
Check that the air conditioning has been selected.
Check that right-hand bargraph 6 is extinguished, if it is not, deal with right-hand
bargraph 6 first.
Enter G0** on the XR25.
If left-hand bargraph 6 remains illuminated, you can begin the fault finding
procedure.
Check the condition of the earth of fan assembly (2) (the relay is controlled by 0 volt).
Repair the fan assembly earth if necessary.
Connect the XR25 and enter # 16. Check that the coolant pressure is approximately 20 bars.
If it is not, top up the coolant (operation of the cooling fan assembly is dependent on the coolant
pressure).
NOChange the relay of fan assembly (2).
YESCheck the continuity and insulation from 12 volts of the electrical wiring
between track F2 and track 23 of the air conditioning control unit 30-way
connector.
Repair the faulty electrical wiring.
Check the condition of the wiring between the relay of fan assembly (2) and track 10 of the injection
computer.
Repair it if necessary.
Check the operating status of the relay by entering G23* on the XR25.
The fan assembly should be heard to knock.
Is the fan assembly heard to knock?
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AIR CONDITIONING
Fault finding - Interpretation of XR25 bargraphs62
KANGOO
ALL TYPES
Enter G0** on the XR25.
Check that the system operates correctly.AFTER
REPAIR
Right-hand bargraph 6 illuminated
FAN ASSEMBLY (1) CONTROL
XR25 assistance:C.O.open circuit
C.C.1short circuit to 12 volts
6
NOTES
Fiche n° 61
Check the condition of the earth of fan assembly (1) (the relay is controlled by 0 volt).
Repair the fan assembly earth if necessary.
Check that the air conditioning has been selected.
Enter G0** on the XR25.
If right-hand bargraph 6 remains illuminated, you can begin the fault finding
procedure.
Connect the XR25 and enter #16. Check that the coolant pressure is approximately 10 bars.
If it is not, top up the coolant (operation of the cooling fan assembly is dependent on the coolant
pressure).
Check that the air conditioning is operating.
Fan assembly (1) is controlled from the time the air conditioning is switched on.
Check the operating status of the relay by entering G22* on the XR25.
The fan assembly should be heard to knock.
Is the fan assembly heard to knock?
YES
Change the relay of fan assembly (1).NO
Check the continuity and insulation from 12 volts of the electrical wiring
between track M2 and track 22 of the air conditioning control unit 30-way
connector.
Repair the faulty electrical wiring.
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AIR CONDITIONING
Fault finding - Customer complaints
62
KANGOO
ALL TYPES
CHART 1
CHART 2
CHART 3
CHART 4
CHART 5
CHART 6
CHART 7
CHART 8
PASSENGER COMPARTMENT FAN DOES NOT OPERATECHART 9
PASSENGER COMPARTMENT INCONVENIENCE
Controls stiffCHART 10
RECIRCULATION FLAP DOES NOT OPERATECHART 11
No cold air
Too cold
Performance poorCHART 12
CHART 13
CHART 14
AIR CONDITIONING PROBLEMS
CHART 15 COOLING FAN ASSEMBLY DOES NOT OPERATE
Air distribution problem
Air flow problem
Heater performance poor
No heat
Too hot
Heating inadequate in the rear
Deicing/demisting performance poor
Ventilation performance poor
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AIR CONDITIONING
Fault finding charts
62
KANGOO
ALL TYPES
Check that the system operates correctly.AFTER
REPAIR
no
CHART 3HEATER PERFORMANCE POOR
NOTES
yes
Advise the customer how to use the heating
system correctly
(eg. : Do not place the passenger
compartment fan on full when starting from
cold, turn it up gradually instead).
Carry out a road test to observe the customer
complaints.
Is the test satisfactory?
yes
A
yes
yes
noSee CHART 1.
no
noEnd of fault finding.
Before carrying out any work, check that the customer uses the air conditioning
correctly.
Non regulated air conditioning.
Visually check that
the action of the control moves
the mixing flap.
Does the flap move?
Visually check
whether the flap travel is complete.
Is it complete?
Check the cooling circuit
(correct filling and bleeding),
the condition of the circuit (pipes,
connections, conformity
of the circuit...).
Repair if necessary.
Does the fault persist?
Readjust the control cable
(cable which controls the sprockets to the
right of the air distribution unit).
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AIR CONDITIONING
Fault finding charts
62
KANGOO
ALL TYPES
AFTER
REPAIR
no
CHART 4NO HEAT
NOTES
Is it an air flow problem?yesSee CHART 2.
yes
yes
noSee CHART 1.
noEnd of fault finding.
noEnd of fault finding.
Before carrying out any work, check that the customer uses the air conditioning
correctly.
Non regulated air conditioning.
Check the level of coolant in the cooling
circuit.
NOTE: if the coolant level is too low, the cir-
cuit may become unprimed when driving at
low load and at idle.
Repair if necessary.
Does the fault persist?
Visually check that moving the control
moves the mixing flap.
Does it move?
yes
Check the coolant circuit.
NOTE: fitting an oil, water or air cooler which
has not been approved by the research centre
and which is incorrectly connected may re-
duce or even stop the flow of coolant in the
heater radiator.
Repair the coolant circuit if necessary.
Does the fault persist?
Remove the heater radiator.
Clean or change it if necessary.
Check that the components which were removed are connected correctly.
Check that the system operates correctly.
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yes
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CONDITIONING
Fault finding charts
62
KANGOO
ALL TYPES
AFTER
REPAIR
CHART 14
CONT
noTop up the coolant circuit.
yes
noSee CHART 15.
Change the pressure sensor.
Check the cleanness of the
condenser wiring harness.
Clean or change the condenser.
If the fault persists, check the operation of
the cooling fan assembly at high speed
(ventilation and air conditioning
on maximum).
It should be:
- operating if high pressure≥ 20 bars
- stopped if high pressure≤ 15 bars
Is the operation of the fan assembly normal?
Check that the components which were removed are connected correctly.
Check that the system operates correctly.
A
With the vehicle stationary, engine running
at idle, air conditioning on maximum,
measure the pressure of the coolant circuit.
If the pressure is > 28 bars, there is :
- too much fluid,
- or the operation of the fan assembly is ab-
normal,
- or the condenser is clogged,
- or the engine heats up too much.
Is the pressure < 28 bars ?
62-38

Check the continuity and insulation from 12
volts of the electrical wiring
between:
air 22 F2 low speed
conditioning relay
computer 23 M2 high speed
relay
Is the wiring in good condition?
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AIR CONDITIONING
Fault finding charts
62
KANGOO
ALL TYPES
AFTER
REPAIR
CHART 15COOLING FAN DOES NOT OPERATE
NOTES
yes
noRepair the faulty
electrical wiring.
noChange the faulty relay(s).
yes
noRepair.
yes
A
Non regulated air conditioning.
The compressor operates.
Check the condition of the fuses.
Change them if necessary.
Check that 12 volts is present on track 5 of the
low speed and high speed relays.
Is this correct?
Check that the fan assembly is correctly
supplied with 12 volts and 0 volt.
Is this correct?
Check that the components which were removed are connected correctly.
Check that the system operates correctly.
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AIR CONDITIONING
Wiring diagram
62
D7F/F8Q and E7J
ENGINES
120 Injection computer
171 Air conditioning clutch
206 Air control pressure switch
225 Diagnostic socket
234 Fan assembly relay
236 Fuel pump relay
248 Fan assembly thermal switch
260 Fuse box
319 Air conditioning control panel
320 Base fan assembly/Air conditioning
419 Air conditioning control unit
466 Shunt box
597 Engine fuse box
700 Cooling fan relay (low speed)
R67 Front of engine/Engine
NB : Evaporator sensor (depending on assembly)
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AIR CONDITIONING
Electrical control
62
13827R
• EVAPORATOR SENSOR (depending on assem-
bly)
REMOVAL
Disconnect the battery.
Remove:
- the windscreen wiper arms,
- the air inlet grille,
- the evaporator protector in the plenum cham-
ber.
Disconnect the evaporator sensor connector and
the air recirculation motor connector.
Free the wiring from its fasteners.
Remove the evaporator sensor.
REFITTING
Proceed in the reverse order to removal.
Ensure that the sensor is correctly positioned on
its seat on the evaporator.
•0.28 Ω
FAN ASSEMBLY SPEED RESISTOR (2)
This is secured to the engine cooling fan support.
•
RECIRCULATION MOTOR
It is only possible to gain access to the recircula-
tion motor following removal of the air blower
unit (refer to the relevant section) and therefore
the evaporator assembly. •
PRESSURE SENSOR
The pressure sensor (1) is located next to the
condenser on the pressure relief valve-
dehydration canister high pressure pipe.
All work on the pressure sensor can be carried out
without draining the coolant circuit. It is secured
to a "SKRADER" valve.
Tightening torque: 0.8 daN.m.
This pressure sensor is fitted with seal. Check that
it is in good condition on refitting and lubricate it
using
P.A.G. SP 10 oil.
62-60