air condition RENAULT SCENIC 2008 J84 / 2.G Passenger Comparment Connection Unit Repair Manual

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -154
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -154V9 MR-372-J84-87B000$473.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ET028
HEATED REAR SCREEN BUTTON
NOTESThere must be no present or stored faults.
Special note:
Information interpretable if the vehicle is configured with Heating or Manual Air
Conditioning (SC008 UCH type and CF019 Type of air conditioning).
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
ET028 Released with press on the button.
ET028 Pressed without press on the button.
Check the condition and connection of the air conditioning 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).
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 insulation and continuity of the following connection:
●Connection code 15M between components 645 and 139.
If the connection is 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_ET028/UCH_V48_ET028/ UCH_V4C_ET028/
UCH_V4D_ET028 /UCH_V4F_ET028/UCH_V50_ET028

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -155
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -155V9 MR-372-J84-87B000$473.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ET029
AIR CONDITIONING BUTTON
NOTESThere must be no present or stored faults.
Special note:
Information interpretable if the vehicle is configured with Manual Air
Conditioning (SC008 UCH type and CF019 Type of air conditioning).
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
Check the condition and connection of the air conditioning 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).
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 insulation and continuity of the following connection:
●Connection code 38AL between components 645 and 319.
If the connection is 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_ET029/UCH_V48_ET029/ UCH_V4C_ET029/
UCH_V4D_ET029 /UCH_V4F_ET029/UCH_V50_ET029

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -156V9 MR-372-J84-87B000$473.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ET030
AIR CONDITIONING REQUEST 2
NOTESThere must be no present or stored faults.
The engine must be running.
Special note:
This is the request for air conditioning sent by the UCH to the injection computer. This
request may reach the UCH in two ways:
–In the case of a vehicle fitted with manual air conditioning, by pressing on the air
conditioning button.
–In the case of a vehicle fitted with climate control, by request from the user or the
climate control computer in automatic mode.
ET030 Inactive despite a climate control request.
Air conditioning
Manual

Air conditioning
climate control
Verify that status ET169 Engine is Running. If status ET169 is not running, run fault
finding on the injection.
Check that status ET029 Air conditioning button is PRESSED by pressing the
button. If status ET029 is RELEASED carry out fault finding on this status.
Verify that status ET015 Passenger compartment ventilation is ACTIVE. If status
ET015 is INACTIVE carry out fault finding on this status.
If the fault is still present, contact the Techline.
Carry out fault finding on the climate control computer (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_ET030/UCH_V48_ET030/ UCH_V4C_ET030/
UCH_V4D_ET030 /UCH_V4F_ET030/UCH_V50_ET030

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -161
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -161V9 MR-372-J84-87B000$473.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ET042
PASSENGER DOOR
NOTESThere must be no faults present.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
Check the condition and connection of the PE1 connector of the UCH (tabs bent, broken, oxidised 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 passenger's side door lock connector (bent, broken, oxidised 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 insulation and continuity of the following connection:
●Connection code 87G between components 645 and 141.
If the connection is 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 continuity between connections 87G and MAN of component 141 (in the rest position).
The insulation between connections 87G and MAN of component 141 (in the engaged position).
Replace the lock if it is not correct.
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_ET042/UCH_V48_ET042/ UCH_V4C_ET042/
UCH_V4D_ET042 /UCH_V4F_ET042/UCH_V50_ET042

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -163
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -163V9 MR-372-J84-87B000$473.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
*CPE: Electric central door lockingET044
CPE* BUTTON
NOTESThere must be no present or stored faults.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
Check the condition and connection of the PE1 connector of the UCH (tabs bent, broken, oxidised 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 connector of the Electric central door locking switch (tabs bent,
broken, oxidised, 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 insulation and continuity of the following connections:
●Connection code 20AW,
●Connection code 20M between components 645 and 1391.
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 insulation and continuity of the following connection:
●Connection code MAM between component 1391 and earth.
If the connection is 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 continuity of the following connections (switch pressed):
●Connection code 20M,
●Connection code 20AW of component 1391.
–The insulation of the following connections (switch in rest position):
●Connection code 20M,
●Connection code 20AW of component 1391.
Replace the switch if it is not correct.
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_ET044/UCH_V48_ET044/ UCH_V4C_ET044/
UCH_V4D_ET044 /UCH_V4F_ET044/UCH_V50_ET044

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -164
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -164V9 MR-372-J84-87B000$473.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
*RF: Radio frequencyET045
RF* signal. RECEIVED
NOTESThere must be no present or stored faults.
Special note:
This status is used for the Unlocking/Locking and hands-free starting functions.
This status simply makes it possible to check the condition of the UCH internal receiver
aerial.
ET045 NO on pressing one of the card buttons.
Check with the vehicle's second card.
If the status changes to YES, check ET066 Card button press received.
If the status remains NO, perform a test with a card belonging to another vehicle.
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_ET045/UCH_V48_ET045/ UCH_V4C_ET045/
UCH_V4D_ET045 /UCH_V4F_ET045/UCH_V50_ET045

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -166
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -166V9 MR-372-J84-87B000$473.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ET047
BRAKE PEDAL POSITION
NOTESThe accessories relay must operate.
During pedal travel, it is possible to obtain an undetermined or inconsistent status for
status ET047 if the brake pedal is left in an "indeterminate zone", with the brake pedal
switch in between the released position and the depressed position (see System
operation).
This treatment applies only in cases in which the status is inconsistent or
undetermined, with full load on the accelerator or completely released from the brake
pedal.
Special note:
Switch on forced after ignition.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
ET047 Inconsistency with the pedal depressed.
Check the condition and connection of the brake pedal switch connector.
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.
Remove the brake pedal switch and check the insulation between connections BPT and 5A of component 160
(switch piston free).
Only replace the brake pedal switch if it is not correct.
Check the condition and connection of the UCH connector PE2.
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.
With the UCH and brake pedal switch disconnected:
Check the insulation from + 12 V of the following connection:
●Connection code 5A, between components 645 and 160.
If the connection is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
The line is shared with the injection computer and the automatic transmission computer (if the vehicle is fitted with
an automatic transmission). In the event of faulty insulation, use a wiring diagram to check the connections
between the brake pedal switch connector and these computers.
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_ET047/UCH_V48_ET047/ UCH_V4C_ET047/
UCH_V4D_ET047 /UCH_V4F_ET047/UCH_V50_ET047

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -167
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -167V9 MR-372-J84-87B000$473.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ET047
CONTINUED 1
ET047 Undetermined without depressing the pedal.
Check the condition and connection of the brake pedal switch connector.
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 for + 12 V on connection BPT of component 160.
If not correct:
–Check the condition and connection UCH connectorPP3. 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.
–With the UCH and the brake pedal switch disconnected, check the insulation in relation to earth and the
continuity of the following connection:
●Connection code BPT between components 645 and 160.
If the connection is faulty and if there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
Remove the brake pedal switch and check the continuity between connections BPT and 5A of component 160
(switch piston pressed).
Only replace the brake pedal switch if it is not correct.
Check the condition and connection of the UCH connector PE2.
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.
With the UCH and brake light switch disconnected:
Check the insulation and continuity of the following connection:
●Connection code 5A, between components 645 and 160.
If the connection is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
The line is shared with the injection computer and the automatic transmission computer (if the vehicle is fitted with
an automatic transmission).
In the event of faulty insulation, it is therefore necessary, using a wiring diagram, to check the connections between
the brake pedal switch connector and these computers.
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.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -168
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -168V9 MR-372-J84-87B000$473.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ET047
CONTINUED 2
ET047 Inconsistency without depressing the pedal.
Check the condition and connection of the brake pedal switch connector.
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.
With the brake pedal switch disconnected:
Check the insulation between connections 65A and SP17 of component 160 (brake light switch piston pressed).
Only replace the brake pedal switch if it is not correct.
Check the condition and connection of the UCH connector PE2.
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.
With the UCH and brake pedal switch disconnected:
Check the insulation in relation to + 12 V of connection 5A between components 645 and 160.
The line is shared with the ABS computer or the electronic stability program (ESP) relay (depending on equipment)
and the brake lights.
In the event of faulty insulation, use a wiring diagram to check the connections between the brake pedal switch
connector and these components.
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.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -169
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -169V9 MR-372-J84-87B000$473.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ET047
CONTINUED 3
ET047 Undetermined with the pedal depressed.
Check the condition and connection of the brake pedal switch connector.
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.
With the brake pedal switch disconnected:
Check for + 12 V on component 160 on connection SP17.
If not correct:
–Check the condition and connection of fuse 1H in the passenger compartment relay and fuse box.
–Check the condition and the connection of the passenger compartment fuse and relay box connector. 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 insulation and continuity of connection SP17 between components 160 and 260. If the connection
is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair, Wiring:
Precautions for repair), repair the wiring, otherwise replace it.
If it is still faulty, contact Techline.
With the brake pedal switch disconnected:
Check the continuity of the following connections:
●Connection code 65A,
●Connection code SP17 of component 160 (brake pedal switch piston free).
Only replace the brake pedal switch if it is not correct.
Check the condition and connection of the UCH connector PE2.
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.
With the UCH and brake pedal switch disconnected:
Check the insulation and continuity of the following connection:
●Connection code 65A between components 645 and 160.
If the connection is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
The line is shared with the ABS computer or the ESP relay (depending on equipment) and the brake lights. In the
event of faulty insulation, it is therefore necessary, using a wiring diagram, to check the connections between the
brake pedal switch connector and these components.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.