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

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of commands87B
87B - 287
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of commands87B
87B - 287V9 MR-372-J84-87B000$817.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
AC034
BOOT EXTERNAL AERIAL TEST
NOTESBefore performing this command, it is essential to perform command AC037
Transmitter aerial diagnostic to ensure there is no aerial fault.
There must be no present or stored faults.
This command is for checking the hands-free boot access zone and works even if the
hands-free card does not belong to the vehicle.
Special note:
This command is for testing correct operation of the external aerial on the boot side.
If the range exceeds 1.50 m, check that there is no short circuit to the aerial earth.
This command takes 1 minute.
View the flashing of the card reader.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
Check the condition and connection of the aerial connector (bent, broken tabs, etc.).
If the connector is faulty and if there is a repair procedure (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 PE3 connector of the UCH (tabs bent, broken, etc.).
If the connector is faulty and if there is a repair procedure (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 to + 12 V and to earth:
●Connection code 26AM.
●Connection code 26AN between components 645 and 1378.
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.
If the fault is still present, contact 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 commands87B
87B - 288
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of commands87B
87B - 288V9 MR-372-J84-87B000$817.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
AC036
INTERNAL AERIAL TESTING
NOTESBefore performing this command, it is essential to perform command AC037
Transmitter aerial diagnostic to ensure there is no aerial fault.
There must be no present or stored faults.
This command is for checking the hands-free access zones around the vehicle and
functions even if the hands-free card does not belong to the vehicle.
Special note:
This command is for testing correct operation of the internal aerials.
This command takes 1 minute.
View the flashing of the card reader.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
FRONT INTERNAL AERIAL
Check the condition and connection of the aerial connector (bent, broken tabs, etc.).
If the connector is faulty and if there is a repair procedure (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 PE3 connector of the UCH (tabs bent, broken, etc.).
If the connector is faulty and if there is a repair procedure (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 to + 12 V and to earth:
●Connection code 26AT.
●Connection code 26AU between components 645 and 1396.
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.
Replace the aerial if necessary.
If the fault is still present, contact 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 commands87B
87B - 289
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of commands87B
87B - 289V9 MR-372-J84-87B000$817.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
AC036
CONTINUED 1
BOOT INTERNAL AERIAL
Check the condition and connection of the aerial connector (bent, broken tabs, etc.).
If the connector is faulty and if there is a repair procedure (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 PE3 connector of the UCH (tabs bent, broken, etc.).
If the connector is faulty and if there is a repair procedure (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 to + 12 V and to earth:
●Connection code 26AV.
●Connection code 26AW between components 645 and 1397.
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.
Replace the aerial if necessary.
If the fault is still present, contact 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 commands87B
87B - 290
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of commands87B
87B - 290V9 MR-372-J84-87B000$817.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
AC036
CONTINUED 2
CENTRE INTERNAL AERIAL
Check the condition and connection of the aerial connector (bent, broken tabs, etc.).
If the connector is faulty and if there is a repair procedure (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 PE3 connector of the UCH (tabs bent, broken, etc.).
If the connector is faulty and if there is a repair procedure (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 to + 12 V and to earth:
●Connection code 26AX.
●Connection code 26AY between components 645 and 1398.
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.
Replace the aerial if necessary.
If the fault is still present, contact 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 commands87B
87B - 292
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of commands87B
87B - 292V9 MR-372-J84-87B000$817.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
AC076
CHILD SAFETY LOCK INDICATOR LIGHT
NOTESNo faults should be present or stored.
This command is for testing child safety lock indicator light operation.
The command lasts 7 seconds.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
The child safety lock switch light does not light up when the command is activated.
Check the condition and connection of the child safety lock switch connector.
If the connector is faulty and if there is a repair procedure (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 135.
If the connector is faulty and if there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair), repair the connector; otherwise, replace the wiring.
Check the condition and connection of connector PE1 on the UCH
If the connector is faulty and if there is a repair procedure (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 20T between components 645 and 135.
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 the fault is still present, contact 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 - Fault Finding Chart87B
87B - 300
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 300V9 MR-372-J84-87B000$903.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart
ALP1 No dialogue with the computer
NOTESCheck the condition and connection of the battery connections.
Check the condition of the power fuses on the battery's positive terminal.
Check the battery voltage.
Repair if necessary.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
Is there contact or another feed level?
NO
Perform locking/unlocking.
Did locking/
unlocking work?
NO
YESRefer to ALP 1 (see 88B, Multiplexing).
Has the fault disappeared?
YES NO
YESRefer to the section
Interpretation of faults, Multiplex
network out of service (see 88B
Multiplexing).
Contact the Techline.
AFTER REPAIRCarry out a complete check using the diagnostic tool.
UCH_V44_ALP1/UCH_V48_ALP1/ UCH_V4C_ALP1/
UCH_V4D_ALP1 /UCH_V4F_ALP1/UCH_V50_ALP1
MR-372-J84-87B000$903.mif

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 301
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 301V9 MR-372-J84-87B000$903.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ALP1
CONTINUED
Check the condition and connection of connector PP1 of the UCH.
If the connector is faulty and if there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair), repair the connector; otherwise, replace the wiring.
Check for earth on connection MAM on the PP3 connector of component 645.
If the connector is faulty and if there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair), repair the connector; otherwise, replace the wiring.
Check for + 12 V on the following connections of the PP1 connector:
●Connection code BPS1 of component 645.
●Connection code BP77 of component 645.
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.
Are the power supplies correct?
YES NO
Repair the faulty connections and fuses up to the
battery, checking the passenger compartment relay
and fuse boxes and the power supply fuse board.
Contact the Techline.
AFTER REPAIRCarry out a complete check using the diagnostic tool.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 302
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 302V9 MR-372-J84-87B000$903.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ALP2 No rear fog lights
NOTESOnly check this customer complaint after performing a complete check with the
diagnostic tool.
Check the bulbs.
Are the bulbs in good condition?
YES
Check status ET082 Rear fog lights request by
actuating the control stalk.
Is status ET082 present?
YES
Perform command AC009 Rear fog lights.
Does the fog light come on?
YES
Check the UCH connectors.
If the fault is still present, contact the Techline.
NOReplace the bulbs.
NOApply interpretation of ET082 Rear fog
light request.
NOApply interpretation of command AC009
Rear fog light.
AFTER REPAIRCarry out a complete check using the diagnostic tool.
UCH_V44_ALP2/UCH_V48_ALP2/ UCH_V4C_ALP2/
UCH_V4D_ALP2 /UCH_V4F_ALP2/UCH_V50_ALP2

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 303
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 303V9 MR-372-J84-87B000$903.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ALP3 NO RIGHT-HAND DIRECTION INDICATOR
NOTESOnly check this customer complaint after performing a complete check with the
diagnostic tool.
Check the bulbs.
Are the bulbs in good condition?
YES
Check the + 12 V supply and earth on the bulb
connectors (see interpretation of DF012 Right-hand
direction indicator circuit).
Is there a supply?
NO
Check status ET084 Right-hand direction
indicator request by actuating the control stalk.
Is status ET084 present?
YES
Perform command AC023 Right-hand direction
indicator.
Does the right-hand direction indicator come on?
YES
Check the UCH connectors.
If the fault is still present, contact the Techline.
NOReplace the bulbs.
YESVerify that there is no corrosion on the
connector.
If the connector is faulty and if there is a
repair procedure (see Technical Note
6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair
the connector; otherwise, replace the
wiring.
NOApply interpretation of status ET084
Right-hand indicator request.
NOApply interpretation of command AC023
Right-hand direction indicator.
AFTER REPAIRCarry out a complete check using the diagnostic tool.
UCH_V44_ALP3/UCH_V48_ALP3/ UCH_V4C_ALP3/
UCH_V4D_ALP3 /UCH_V4F_ALP3/UCH_V50_ALP3

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 304
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 304V9 MR-372-J84-87B000$903.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ALP4 No left-hand direction indicator
NOTESOnly check this customer complaint after performing a complete check with the
diagnostic tool.
Check the bulbs.
Are the bulbs in good condition?
YES
Check the + 12 V supply and earth on the headlight
connectors (see interpretation of DF013 Left-hand
direction indicator circuit).
Is there a supply?
NO
Check status ET083 Left-hand direction indicator
request by moving the control stalk.
Is status ET083 present?
YES
Perform command AC022 Left-hand direction
indicator.
Does the left-hand direction indicator come on?
YES
Check the UCH connectors.
If the fault is still present, contact the Techline.
NOReplace the bulbs.
YESVerify that there is no corrosion on the
connector.
If the connector is faulty and if there is a
repair procedure (see Technical Note
6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair
the connector; otherwise, replace the
wiring.
NOApply interpretation of status ET083 Left-
hand direction indicator request.
NOApply interpretation of command AC022
Left-hand direction indicator.
AFTER REPAIRCarry out a complete check using the diagnostic tool.
UCH_V44_ALP4/UCH_V48_ALP4/ UCH_V4C_ALP4/
UCH_V4D_ALP4 /UCH_V4F_ALP4/UCH_V50_ALP4