wiring diagram RENAULT SCENIC 2008 J84 / 2.G Passenger Comparment Connection Unit Workshop Manual

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Introduction87B
87B-2
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Introduction87B
87B-2V9 MR-372-J84-87B000$043.mif
187B
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Introduction
1. SCOPE OF THIS DOCUMENT
This document presents the fault finding procedure applicable to all computers with the following specifications:
2. PREREQUISITES FOR FAULT FINDING
Documentation type:
Fault finding procedures (this document):
–Assisted fault finding (integrated into the diagnostic tool), Dialogys.
Wiring Diagrams:
–Visu-Schéma (CD-ROM), paper.
Type of diagnostic tools:
–CLIP
Special tooling required:
3. REMINDERS
Procedure
To run fault finding on the vehicle computers, switch on the forced + after ignition feed.
Proceed as follows: Vehicle(s): Mégane II, Scénic II
Function concerned: UCHName of computer: UCH
Vdiag No.: 44, 48, 4C, 4D, 4F, 50.
Special tooling required
Multimeter
Elé. 1681 Universal bornier
Switch on the forced + after ignition feed:
–with the vehicle card in the card reader,
–press and hold start button (longer than 5 seconds) with start-up conditions not fulfilled,
–connect the diagnostic tool and perform the required operations.
Switching off the forced + after ignition feed:
Press the Start button twice briefly (less than 3 seconds).
ensure that the + after ignition feed has been cut off by checking that the computer indicator lights on the instrument
panel have gone out.
UCH_V44_PRELI /UCH_V48_PRELI/UCH_V4C_PRELI/
UCH_V4D_PRELI/UCH_V4F_PRELI/UCH_V50_PRELI
MR-372-J84-87B000$043.mif

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-75
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-75V9 MR-372-J84-87B000$301.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
DF003
PRESENT
OR
STOREDCLUTCH SWITCH CIRCUIT
CO.1: Short circuit or open circuit to + 12 V
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault appears after a road test at speed > 60 mph (100 km/h).
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
CO.1
NOTESNone.
Check the condition and connection of the clutch switch connector (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 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 insulation and continuity against + 12 V of the following connection:
●Connection code 26X between components 645 and 675.
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.
Check for an earth on connection MAM of component 675.
If the connection is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the connection, otherwise replace the wiring.
If the connection is OK and earth is present, replace the clutch switch.
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_DF003 /UCH_V48_DF003/UCH_V4C_DF003/
UCH_V4D_DF003/UCH_V4F_DF003/UCH_V50_DF003

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-79
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-79V9 MR-372-J84-87B000$301.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
DF010
PRESENT
OR
STORED
STEERING COLUMN SWITCH COMBINED CIRCUIT
1.DEF: The combined stalk is not connected or not correctly connected (stalk or UCH
side), not being supplied or has an internal electronic fault
2.DEF: Combined stalk lighting function connection to UCH in open circuit or internal
stalk fault
3.DEF: Combined stalk wiping function connection to UCH in open circuit or internal
stalk fault
4.DEF: Combined stalk direction indicator function connection to UCH in open circuit
or internal stalk fault
5.DEF: Combined stalk trip computer function connection to UCH in open circuit or
internal stalk fault
1.DEF
2.DEF
3.DEF
4.DEF
5.DEF
NOTESConditions for applying the fault finding procedure to a
stored fault:
If the fault becomes present after an action on the stalk, then
carry out this fault finding procedure.
Use Wiring Diagrams Technical Note for MEGANE II or
SCENIC II.
Check the condition and connection of the PE2 connector of the UCH (tabs bent, broken, oxidised).
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 steering column control connector (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 14 1B,
●Connection code 14 1K,
●Connection ode 14 1C,
●Connection code 141L,
●Connection code 14 1D,
●Connection code 14 1M,
●Connection code 14 1G,
●Connection code 14 1N,
●Connection code 14 1H,
●Connection code 14 1P.
Between components 645 and 1519.
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 these connections are sound, contact the Techline.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_DF010 /UCH_V48_DF010/UCH_V4C_DF010/
UCH_V4D_DF010/UCH_V4F_DF010/UCH_V50_DF010

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-80
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-80V9 MR-372-J84-87B000$301.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
DF011
PRESENT
OR
STOREDRAIN/LIGHT SENSOR CIRCUIT
1.DEF: Communication disrupted
2.DEF: Internal electronic fault
NOTESConditions for applying the fault finding procedure to a stored fault:
Run the automatic wiper system and automatic light illumination system, then cover the
sensor and/or place water on it.
If the fault appears, carry out this fault finding procedure.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
1.DEF
NOTESNone.
For vehicles which were manufactured after June 2005, check the condition and connection of the sensor supply
7.5A fuse located on the Protection and Switching Unit.
Replace it if necessary.
Check the condition and connection of the sensor connector (bent, oxidised, broken tabs etc.).
If the 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.
Check for an earth on connection MAM of component 1415.
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, BPT connection of component 1415 (timed + 12 V before ignition feed if the vehicle was
manufactured after June 2005). 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.
Ensure the continuity and the insulation of the following connection:
●Connection code BPT between components 645 and 1415.
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.
Check for any intermediate connectors using the vehicle wiring diagram and repair if necessary.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_DF011/UCH_V48_DF011/UCH_V4C_DF011/
UCH_V4D_DF011/UCH_V4F_DF011 /UCH_V50_DF011

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-82
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-82V9 MR-372-J84-87B000$301.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
DF012
PRESENT
OR
STOREDRIGHT-HAND DIRECTION INDICATOR CIRCUIT
CO.0: Open circuit or short circuit to earth
1.DEF: Bulbs not working or open circuit
NOTESConditions for applying the fault finding procedure to a stored fault:
If the fault appears after action on the right-hand direction indicator control stalk, apply
this fault finding procedure.
Special note:
The fault becomes stored after changing a bulb.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
Check the bulbs.
Replace them, if necessary.
Check the condition and connection of the right-hand headlight connectors of the right-hand indicator
repeater and the rear right-hand light.
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 earth on components 226 and 267.
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.
Check for earth on connection MAQ of component 172.
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.
With the command running, check for + 12 V on connection 64D of components 226 and 267.
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.
Check the condition and connection of connector PP3 and connector PP1 on the UCH.
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 64D, between components 645 and 172.
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.
If correct, check the connection between the UCH and front and rear lights (see wiring diagram), check the bulbs
again and if still not correct, replace the rear lights(s).
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_DF012 /UCH_V48_DF012/UCH_V4C_DF012/
UCH_V4D_DF012/UCH_V4F_DF012/UCH_V50_DF012

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-83
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-83V9 MR-372-J84-87B000$301.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
DF013
PRESENT
OR
STOREDLEFT-HAND DIRECTION INDICATOR CIRCUIT
CO.0: Open circuit or short circuit to earth
1.DEF: Bulbs not working or open circuit
NOTESConditions for applying the fault finding procedure to a stored fault:
If the fault appears after action on the left-hand direction indicator control stalk, then
apply this fault finding procedure.
Special note:
The fault becomes stored after changing a bulb.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
Check the bulbs.
Replace them, if necessary.
Check the condition and connection of the left-hand headlight connector, the left-hand repeater and the rear
left-hand light.
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 earth on components 227 and 268.
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.
Check for earth on connection MZ of component 173.
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.
With the command running, check for + 12 V on connection 64C of components 227 and 268.
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.
Check the condition and connection of connector PP3 and connector PP2 on the UCH.
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 64C between components 645 and 173.
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.
If correct, check the connection between the UCH and front and rear lights (see wiring diagram), check the bulbs
again and if still not correct, replace the rear lights(s).
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_DF013 /UCH_V48_DF013/UCH_V4C_DF013/
UCH_V4D_DF013/UCH_V4F_DF013/UCH_V50_DF013

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-84
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-84V9 MR-372-J84-87B000$301.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
DF014
PRESENT
OR
STOREDCARD READER CIRCUIT
CC.0: Short circuit to earth
CO.0: Open circuit or short circuit to earth
CC.1: Short circuit to + 12 V
1.DEF: Internal electronic fault
NOTESConditions for applying the fault finding procedure to a stored fault:
Insert the card into the card reader, switch on and switch off the engine leaving the
card in the card reader. Carry out fault finding on the card reader circuit with the card
in the card reader (after the engine is switched off, the card reader is supplied and
controlled for 20 min).
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
CC.0
NOTESNone.
Check the condition and connection of the card reader connector (tabs bent, broken, oxidised, 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 PE2 and PE1 connectors of the UCH (tabs bent, broken, oxidised,
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.
Ensure the continuity and insulation from earth of the following connections:
●Connection code 26BG,
●Connection code 26BD,
●Connection code 26BH.
Between components 645 and 1082.
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.
Using the oscilloscope, check for a square pulse signal on connection 26BH of the card reader connector:
Connect the oscilloscope between connection 26BH of the connector and a bodywork earth.
Set the oscilloscope as: Calibration at 5 V/division
Time base 100 ms/division
Check for a square pulse signal from the UCH on connection 26BH of the card reader connector.
If there is no signal, replace the UCH.
If there is a signal, replace the card reader.
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_DF014 /UCH_V48_DF014/UCH_V4C_DF014/
UCH_V4D_DF014/UCH_V4F_DF014/UCH_V50_DF014

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-87
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-87V9 MR-372-J84-87B000$301.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
DF015
PRESENT
OR
STOREDOPTICAL SENSOR CIRCUIT
CC.0: Short circuit to earth
NOTESConditions for applying the fault finding procedure to a stored fault:
Lock the vehicle and place your hand in each handle.
If the fault appears, carry out this fault finding procedure.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
Check that ET054 Optical sensors supplied is YES. If status ET054 remains NO, consult the interpretation of
status ET054.
Check the statuses of the sensors to determine which sensor is in short circuit: without a hand being placed inside
the handles, the statuses must be INACTIVE.
ET055 Driver's side optical sensor,
ET056 Driver's rear optical sensor,
ET057 Front/rear passenger optical sensor.
If one of the statuses remains ACTIVE, disconnect the faulty sensor(s): if, after disconnection, the status returns
to INACTIVE, replace the faulty sensor.
If a status remains INACTIVE after placing a hand inside the handle:
Check for + 12 V on connection 26BH of the sensor(s).
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 26P between components 645 and 1084.
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.
Check the insulation and continuity of the following connection:
●Connection code 26P between components 645 and 1086.
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.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_DF015 /UCH_V48_DF015/UCH_V4C_DF015/
UCH_V4D_DF015/UCH_V4F_DF015/UCH_V50_DF015

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-91
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-91V9 MR-372-J84-87B000$301.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
DF020
PRESENT
OR
STOREDFRONT INTERNAL AERIAL CIRCUIT
CO: Open circuit
NOTESConditions for applying the fault finding procedure to a stored fault:
Activation of command AC037: Transmitter aerial fault finding; if the fault becomes
present, then carry out this fault finding procedure.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
Check the condition and connection of the front internal aerial connector (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 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 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 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 the Techline.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_DF020 /UCH_V48_DF020/UCH_V4C_DF020/
UCH_V4D_DF020/UCH_V4F_DF020/UCH_V50_DF020

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-92
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-92V9 MR-372-J84-87B000$301.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
DF021
PRESENT
OR
STOREDREAR INTERNAL AERIAL CIRCUIT
CO: Open circuit
NOTESConditions for applying the fault finding procedure to a stored fault:
Activation of command AC037: Transmitter aerial fault finding; if the fault becomes
present, then carry out this fault finding procedure.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
Check the condition and connection of the rear internal aerial connector (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 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 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 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 the Techline.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_DF021 /UCH_V48_DF021/UCH_V4C_DF021/
UCH_V4D_DF021/UCH_V4F_DF021/UCH_V50_DF021