62C-8
MR-413-X44-62C000$182_eng.mif
V1
MANUAL AIR CONDITIONING
Fault finding - List and location of components62C
●HEATING COMPONENTS
–Heater matrix: This is located at the bottom of the heating and air conditioning unit.
–Heating resistors: These are located at the bottom of the heater matrix on the driver's side (depending on the
equipment).
●ACTUATORS:
–Air distribution flap: This is located in the heating and air conditioning unit.
–Air mixing flap: This is located in the heating and air conditioning unit.
–Recirculation flap: This is located behind the dashboard.
–Flap motors: These are located close to the flaps (climate control).
●OTHERS
–Passenger compartment blower unit: This is located in the heating and air conditioning unit.
–Cooling fan assembly: This is located in the front panel of the vehicle, in front of the condenser.
–Air pipes: These are located under the dashboard.
62C-21
MR-413-X44-62C000$546_eng.mif
V1
62C
MANUAL AIR CONDITIONING
Diagnostics - Configuration and programming
Air conditioning system configurations
Air conditioning system configuration readingsComputers Configuration Option Comments
UCHCF019: Type of air
conditioning– Heating
– Manual
– Climate control
CF029: Exterior
temperature
sensor–With
–None
INJECTION (all types) X XAutomatic computer
configuration
Computers Configuration readings Option Comments
UCHLC013: Type of air
conditioning– Climate control
– Manual air
conditioning
– Heating
None
LC002: External
temperature
sensor– With
– None
MR-413-X44-62C000$546_eng.mif
62C-50
MR-413-X44-62C000$819_eng.mif
V1
MANUAL AIR CONDITIONING
Fault finding - Fault finding charts62C
ALP 8
CONTINUED 2
With the engine running at idle speed, use the
diagnostic tool to check that UCH does in fact
send the start air conditioning request to the
injection computer. Status ET030 Air conditioning
request 2 should display ACTIVE.
Is status ET030 “ACTIVE”?
YES
Using the diagnostic tool (injection cold loop sub-
function screen), display the following statuses:
- ET004 Air conditioning authorised,
- ET088 Compressor activation request.
Is status ET004 “YES” and status ET088
“ACTIVE”
NO
Check that the injection computer is correctly configured. Status ET079 CLIMATE CONTROL PRESENT should
display YES (cold loop sub-function screen).
Is status ET079 YES?
YESNOCheck that the UCH is correctly configured by
viewing the configuration reading LC013 Type
of air conditioning.
Should be “Manual air conditioning”
Reconfigure the UCH if necessary.
Check that the UCH is receiving the engine
operating status and passenger compartment
blower signals correctly (for manual air
conditioning). In the Cold Loop sub-function
screen, status ET142 “Engine operating
phase” should display “RUNNING” and status
ET015 “Passenger compartment blower”
should display “ACTIVE” and parameter
PR024 “Exterior temperature” should be >
3˚C.
If the parameter and statuses are not correct,
carry out fault finding on the multiplex network
and UCH (interpretation of status ET015,
ET142 and parameter PR024).
YES
NO
Interpretation fault for status ET079, see
conformity check, cold loop sub-function:
–13B, Diesel injection,
–17B, Petrol injection.
AFTER REPAIRCarry out a complete check with the diagnostic tool.
