2008 RENAULT SCENIC Passenger Comparment Connection Unit Workshop Manual

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 337
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 337V9 MR-372-J84-87B000$946.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ALP24
CONTINUED 1
Check for + 12 V on connection BP93 of component 304.
Is the feed correct?
YES NO
Use the diagnostic tool to read the faults in the
UCH.
Is fault DF031 One touch window connection
present?
YES NO
Check the continuity, insulation and the
absence of the interference resistance to
+ 12 V and to earth of the following connection:
●Connection code 21K between
components 304 and 645.
If the continuity is faulty, check the
intermediate connectors.
If one of the connectors is faulty and there is a
repair procedure (see Technical Note 6015A,
Electrical wiring repair, Wiring: Precautions
for repair), repair the connector, otherwise
replace the wiring.
If the fault is still present, contact the Techline.
Check the continuity on the following connection:
●Connection code BP93 between
components 304 and 260.
●Connection code MAM between
component 304 and Left-hand dashboard/
cross member earth.
If one of the continuities is faulty, check the
intermediate connector.
If a connector is faulty and there is a repair
procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair),
repair the connector, otherwise replace the wiring.
If the fault is still present, contact the Techline.
AFTER REPAIRCarry out a complete check using the diagnostic tool.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 338
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 338V9 MR-372-J84-87B000$946.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ALP24
CONTINUED 2
Disconnect the connector from the sunroof switch
(see MR 364 Mechanical, 87D Electric windows -
sunroof, sunroof switch: Removal - Refitting).
Check the resistance between connection 52D of
component 304 and the chassis earth.
Is the value shown less than 30 ΩΩ Ω Ω
?
NO
Disconnect the sunroof motor connector
(see MR Mechanical, 87D Electric windows -
sunroof, Sunroof motor: Removal - Refitting).
Check the continuity on the following connection:
●Connection code 52D, between
components 304 and 317.
If the continuity is faulty, check the intermediate
connector.
Is the connection correct?
YESUsing the multimeter and table (ALP24
CONTINUED 6), check the conformity and
correct operation of the sunroof switch.
NOIf 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.
AFTER REPAIRCarry out a complete check using the diagnostic tool.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 339
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 339V9 MR-372-J84-87B000$946.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ALP24
CONTINUED 3
Disconnect the black connector from the sunroof motor.
Using a multimeter, check for + 12 V between connections BP93 and MAM of component 304.
Is the feed correct?
YESNO
Replace the sunroof motor (see 87D Electric windows - sunroof: Removal - Refitting).
Using the wiring diagram which corresponds to the vehicle, check the conformity of union R301.
Disconnect the sunroof motor connector (see MR Mechanical systems, 87D Electric windows-sunroof,
Sunroof motor: Removal - Refitting) and disconnect union R301.
Check the continuity of the following connections:
●Connection code MAM.
●Connection code BP93 between components 304 and R301.
If the continuity is faulty, check the intermediate connector R339.
If one of the connectors is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring
repair, Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
After repairing the condition of the wiring, initialise the sunroof (see MR fault finding 87D, Electric sunroof:
Initialisation).
If the fault is still present, contact the Techline.
AFTER REPAIRCarry out a complete check using the diagnostic tool.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 340
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 340V9 MR-372-J84-87B000$946.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ALP24
CONTINUED 4
Is the control correct?
YES
Disconnect the sunroof motor connector (see MR Mechanical, 87D Electric windows - sunroof, Sunroof motor:
Removal - Refitting).
Check for + 12 V between connections BP93 and MAM of component 304.
Is the feed correct?
YESNO
Using the wiring diagram which corresponds to the vehicle, check the conformity of union R301.
Disconnect the sunroof motor connector (see MR Mechanical systems, 87D Electric windows-
sunroof, Sunroof motor: Removal - Refitting) and disconnect union R301.
Check the continuity of the following connections:
●Connection code MAM.
●Connection code BP93 between components 304 and R301.
If the continuity is faulty, check the intermediate connector R339.
If one of the connectors is faulty and there is a repair procedure (see Technical Note 6015A,
Electrical wiring repair, Wiring: Precautions for repair), repair the connector, otherwise
replace the wiring.
After repairing the condition of the wiring, initialise the sunroof (see MR fault finding 87D, Electric
sunroof: Initialisation).
If the fault is still present, contact the Techline.
NOReplace the control (see MR Mechanical
systems, 87D Electric windows -
sunroof, Sunroof switch: Removal -
Refitting).
AFTER REPAIRCarry out a complete check using the diagnostic tool.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 341
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 341V9 MR-372-J84-87B000$946.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ALP24
CONTINUED 5
Check using status ET087 Sunroof/one touch window authorisation that authorisation for the UCH to open the
sunroof is ACTIVE.
Disconnect the sunroof motor connector (see MR Mechanical, 87D Electric windows - sunroof, Sunroof motor:
Removal - Refitting).
Check for + 12 V between connections BP93 and 21K of component 304.
Is the feed correct?
NOYES
Disconnect the sunroof motor connector (see MR Mechanical systems, 87D Electric windows-
sunroof, Sunroof motor: Removal - Refitting) and disconnect union R301.
Check the continuity on the following connection:
●Connection code 21K between components 304 and 645.
If the continuity is faulty, use the wiring diagram corresponding to the vehicle to check
intermediate connectors R339 and R301.
If one of the connectors is faulty and there is a repair procedure (see Technical Note 6015A,
Electrical wiring repair, Wiring: Precautions for repair), repair the connector, otherwise replace
the wiring.
After repairing the condition of the wiring, initialise the sunroof (see MR fault finding 87D, Electric
sunroof: Initialisation).
If the fault is still present, contact the Techline.
AFTER REPAIRCarry out a complete check using the diagnostic tool.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 342
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 342V9 MR-372-J84-87B000$946.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ALP24
CONTINUED 6
Check the continuity and insulation of the following connections:
●Connection code 52J.
●Connection code 52H.
●Connection code 52G between components 304 and R301.
If the continuity is faulty, use the wiring diagram corresponding to the vehicle to check the conformity of
intermediate connector R339.
If one of the connectors is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring
repair, Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
After repairing the condition of the wiring, initialise the sunroof (see MR fault finding 87D, Electric sunroof:
Initialisation).
If the continuity and insulation of the following connections are correct: Replace the sunroof motor (see 87D
Electric windows - sunroof: Removal - Refitting).
Control positionConnections 52D and
52HConnections 52D and
52JConnections 52D and
52G
Closed 100 ΩΩ Ω Ω
Max.100 ΩΩ Ω Ω
Max. Infinite
Tilt position Infinite100 ΩΩ Ω Ω
Max. Infinite
Sliding position 1Infinite100 ΩΩ Ω Ω
Max.100 ΩΩ Ω Ω
Max.
Sliding position 2Infinite Infinite100 ΩΩ Ω Ω
Max.
Sliding position 3 100 ΩΩ Ω Ω
Max. Infinite100 ΩΩ Ω Ω
Max.
Pressed 100 ΩΩ Ω Ω
Max.100 ΩΩ Ω Ω
Max.100 ΩΩ Ω Ω
Max.
AFTER REPAIRCarry out a complete check using the diagnostic tool.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 343
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 343V9 MR-372-J84-87B000$946.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ALP25 No sunroof opening position 1, 2 or 3
NOTESOnly consult this customer complaint after a complete check with the diagnostic tool.
For vehicles with Mégane II phase 2 bodywork, (see 87D Electric windows -
Sunroof, Fault finding chart).
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
Does the sunroof operate in at least one of the
control positions?
YES
Disconnect the sunroof switch and check its
conformity and correct operation using a multimeter
and the table below.
Control positionConnections 52D and
52HConnections 52D and
52JConnections 52D and
52G
Closed 100 ΩΩ Ω Ω
Max.100 ΩΩ Ω Ω
Max. Infinite
Tilt position Infinite100 ΩΩ Ω Ω
Max. Infinite
Sliding position 1Infinite100 ΩΩ Ω Ω
Max.100 ΩΩ Ω Ω
Max.
Sliding position 2Infinite Infinite100 ΩΩ Ω Ω
Max.
Sliding position 3 100 ΩΩ Ω Ω
Max. Infinite100 ΩΩ Ω Ω
Max.
Pressed 100 ΩΩ Ω Ω
Max.100 ΩΩ Ω Ω
Max.100 ΩΩ Ω Ω
Max.
NOSee ALP24.
AFTER REPAIRCarry out a complete check using the diagnostic tool.
UCH_V44_ALP25 /UCH_V48_ALP25/UCH_V4C_ALP25/
UCH_V4D_ALP25/UCH_V4F_ALP25/UCH_V50_ALP25

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 344
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 344V9 MR-372-J84-87B000$946.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ALP25
CONTINUED
Is the control correct?
YES
Check the continuity and insulation of the following connections:
●Connection code 52J.
●Connection code 52H.
●Connection code 52G between components 304 and R301.
If the continuity is faulty, use the wiring diagram corresponding to the vehicle to check the conformity of
intermediate connector R339.
If one of the connectors is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring
repair, Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
After repairing the condition of the wiring, initialise the sunroof (see MR fault finding 87D, Electric sunroof:
Initialisation).
If the continuity and insulation of the following connections are correct: Replace the sunroof motor (see 87D
Electric windows - sunroof: Removal - Refitting).
NOReplace the control (see MR Mechanical
systems, 87D Electric windows -
sunroof, Sunroof switch: Removal -
Refitting).
AFTER REPAIRCarry out a complete check using the diagnostic tool.