2008 RENAULT SCENIC Passenger Comparment Connection Unit Workshop Manual

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -145
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -145V9 MR-372-J84-87B000$473.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ET015
PASSENGER COMPARTMENT FAN
NOTESThere must be no present or stored faults.
Apply to manual air conditioning and heating systems.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
ET015 is Inactive, the ventilation control on the air conditioning control panel is not 0.
Check the condition and connection of the heating and air conditioning system control panel connector (bent,
broken tabs, etc.).
If the connector is faulty and if 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 condition and connection of the UCH connector PE2 (tabs bent, broken, etc.).
If the connector is faulty and if 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 continuity and insulation of the following connections:
●Connection code 38LP,
●Connection code 38LQ,
between components 645 and 319.
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 it.
Check the control panel (see 62C, Manual air conditioning).
If the fault is still present, contact the Techline.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_ET015/UCH_V48_ET015/ UCH_V4C_ET015/
UCH_V4D_ET015 /UCH_V4F_ET015/UCH_V50_ET015

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -146
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -146V9 MR-372-J84-87B000$473.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ET016
BUZZER ACTIVATION REQUEST
NOTESThere must be no present or stored faults.
Special note:
Status ET016 is STATUS 1 or STATUS 2 if the SSPP buzzer is activated. A tyre is
punctured or there is a severe under-inflation.
ET016 is STATUS 1.
Request for activation of the buzzer linked to display of a puncture warning message on the instrument panel.
Adjust the pressures of the four tyres to the recommended pressures. Repair or replace the tyre if necessary.
ET016 is STATUS 2.
Request for buzzer activation to warn the driver that the vehicle speed is too high when the vehicle has one or more
punctured tyres.
This signal is only valid for vehicles fitted with runflat tyres.
Adjust the pressures of the four tyres to the recommended pressures. Repair or replace the tyre if necessary.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_ET016/UCH_V48_ET016/ UCH_V4C_ET016/
UCH_V4D_ET016 /UCH_V4F_ET016/UCH_V50_ET016

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -147
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -147V9 MR-372-J84-87B000$473.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
*RCH = Passenger Compartment Heating ResistorET017
NUMBER OF RCH* REQUIRED
NOTESThere must be no present or stored faults.
The status, depending on the conditions, will be 0, 1, 2, 3, 4 or 5.
Special note:
Manual air conditioning (not automatic)
Defined by the UCH according to the engine coolant temperature, the external
temperature and electrical availability.
Climate control
Defined by the UCH according to the engine coolant temperature, the external
temperature, electrical availability, the internal temperature and the user's request.
The passenger compartment heating resistor control conditions are:
Manual air conditioning (not automatic):
ET169 Engine is Running,
ET015 Passenger compartment fan Active,
PR002 Exterior temperature < 5˚C
Engine coolant temperature < 50˚C (refer to injection computer),
Electrical availability - 60%, alternator load < 70% (refer to the Power and Switching Unit).
Climate control:
ET169 Engine is Running,
PR002 Exterior temperature < 5˚C
Engine coolant temperature < 50˚C (refer to injection computer).
Electrical availability - 60%, alternator charge < 70% (refer to the Power and Switching Unit).
Heat demand by the user (refer to the climate control computer).
Check the consistency of these statuses and parameters.
In the event of a fault, consult the interpretation of these statuses and parameters.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_ET017/UCH_V48_ET017/ UCH_V4C_ET017/
UCH_V4D_ET017 /UCH_V4F_ET017/UCH_V50_ET017

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -148
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -148V9 MR-372-J84-87B000$473.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
*RCH = Passenger Compartment Heating ResistorET018
NUMBER OF RCH* AUTHORISED BY ALTERNATOR
NOTESThere must be no present or stored faults.
Special note:
This information is usable only on vehicles fitted with passenger compartment heating
resistors.
Calculation performed by the UCH according to the alternator power available
(information supplied by the UPC).
This information allows the number of passenger compartment heating resistors to be
supplied depending on the available power.
The status, depending on the conditions, will be 0, 1, 2, 3, 4 or 5.
In the event of a fault, perform fault finding on the UPC (see 87G, Engine compartment connection unit).
The parameter PR010 (UPC) of the alternator charge should be less than 70% so that the passenger
compartment heating resistors can be authorised by the alternator.
If the fault is still present, contact the Techline.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_ET018/UCH_V48_ET018/ UCH_V4C_ET018/
UCH_V4D_ET018 /UCH_V4F_ET018/UCH_V50_ET018

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -149
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -149V9 MR-372-J84-87B000$473.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
*RCH = Passenger Compartment Heating ResistorET019
NUMBER OF PASSENGER COMPARTMENT HEATING
RESISTORS AUTHORISED BY THE INJECTION
NOTESThere must be no present or stored faults.
Special note:
Calculation performed by the UCH depending on the maximum power authorised by
the injection computer.
This information allows the number of passenger compartment heating resistors to be
supplied depending on the engine load.
The status, depending on the conditions, will be 0, 1, 2, 3, 4 or 5.
In the event of a fault, run fault finding on the injection system (see 13B, Diesel injection or 17B, Petrol injection).
Conditions for authorisation of passenger compartment heating resistor by the injection:
–the injection system status ET111 Fixed number of RCH* should be NO,
–the injection system status ET112 RCH* cut-off should be NO.
If the fault is still present, contact the Techline.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_ET019/UCH_V48_ET019/ UCH_V4C_ET019/
UCH_V4D_ET019 /UCH_V4F_ET019/UCH_V50_ET019

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -150
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -150V9 MR-372-J84-87B000$473.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
*RCH = Passenger Compartment Heating ResistorET020
NUMBER OF RCH* CONTROLLED
NOTESThere must be no present or stored faults.
The maximum number of passenger compartment heating resistors controlled will be
the minimum number indicated by statuses ET017, ET018, ET019.
Special note:
The UCH controls the passenger compartment heating resistor relays according to the
authorisation from the injection computers and Protection and Switching Unit.
The status, depending on the conditions, will be 0, 1, 2, 3, or 4.
The passenger compartment heating resistor control conditions are:
–Heater motor running.
–Battery voltage > 12 V.
–Interior temperature < 10˚C.
–User temperature setpoint in warm position (> 20˚C).
–PR002 External temperature < 5˚C.
–ET015 Passenger compartment fan ACTIVE.
–ET018 Number of RCHs authorised by alternator > 0.
–ET019 Number of RCH* authorised by injection computer > 0.
–PR010 (UPC) Alternator charge < 70%.
If all the conditions are satisfied, and depending on the air conditioning function program, the UCH controls the
Passenger Compartment Heating Resistors needed to provide the service.
Check that these statuses and parameters are working properly.
In the event of a fault, refer to the interpretation of these statuses and parameters.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_ET020/UCH_V48_ET020/ UCH_V4C_ET020/
UCH_V4D_ET020 /UCH_V4F_ET020/UCH_V50_ET020

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -151
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -151V9 MR-372-J84-87B000$473.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
*RCH = Passenger Compartment Heating ResistorET021
ET022
ET023
RCH* 1 RELAY CONTROL
RCH* 2 RELAY CONTROL
RCH* 3 RELAY CONTROL
NOTESThere must be no present or stored faults.
For statuses ET021 and ET022, the signal can be interpreted if the vehicle is
configured with 1000 W Passenger Compartment Heating Resistors or 1800 W
Passenger Compartment Heating Resistors.
For status ET023, the signal is interpretable if the vehicle is configured with RCH
1800 W.
In the event of a fault, check the operation of statuses ET015 Passenger compartment fan, ET017 Number of
RCH* required, ET018 Number of RCH* authorised by alternator, ET019 Number of RCH* authorised by
injection and ET020 Number of RCH* controlled.
Carry out fault finding on commands AC016 RCH* relay 1, AC017 RCH* relay 2 and AC018 RCH* relay 3.
Check the parameters needed to switch on the Passenger Compartment Heating Resistors; exterior temperature,
interior temperature, temperature setpoint on the heater control panel, alternator load, battery voltage.
If all the requisite conditions are consistent and the status remains INACTIVE, contact Techline.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_ET021/UCH_V48_ET021/ UCH_V4C_ET021/UCH_V4D_ET021/ UCH_V4F_ET021/UCH_V50_ET021/
UCH_V44_ET022/UCH_V48_ET022/ UCH_V4C_ET022/UCH_V4D_ET022/ UCH_V4F_ET022/UCH_V50_ET022/
UCH_V44_ET023/UCH_V48_ET023/ UCH_V4C_ET023/UCH_V4D_ET023/ UCH_V4F_ET023/UCH_V50_ET023

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -152
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -152V9 MR-372-J84-87B000$473.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ET025
RETRACTABLE ROOF
NOTESThere must be no present or stored faults.
If the vehicle is a cabriolet, status ET025 is CLOSED or NOT CLOSED.
If the vehicle is not a cabriolet, status ET025 will be ABSENT.
ET025 is CLOSED
The retractable roof of the cabriolet vehicle is closed.
In case of inconsistency, contact the Techline.
ET025 is NOT CLOSED
The retractable roof of the vehicle is not closed.
In case of inconsistency, contact the Techline.
ET025 is ABSENT
The position of the retractable roof is unknown.
In case of inconsistency, contact the Techline.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_ET025/UCH_V48_ET025/ UCH_V4C_ET025/
UCH_V4D_ET025 /UCH_V4F_ET025/UCH_V50_ET025