RENAULT SCENIC 2008 J84 / 2.G Engine Compartment Connection Unit Repair Manual

ENGINE COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults87G
87G - 51V7 MR-372-J84-87G050$385.mif
UPC
Vdiag No.: 48, 4C
DF032
PRESENT
OR
STORED+ 12 V RELAY SUPPLY CIRCUIT
CC.0 : Short circuit to earth
CC.0
NOTESSpecial note:
To display this fault as present or stored, run command
AC016 Electrical supply circuits test.
Use Wiring Diagrams Technical Note for Mégane II or
Scénic II.
Check that UPC fuses F8 (25A), F12 (20A) and F20 (20A) are correct.
Check the insulation, continuity and the absence of interference resistance on the following connections:
–BP14, between components 1337 and 118,
–BP42, between components 1337 and 997,
–BP42, between components 1337 and 119,
–BP27, between components 1337 and 449.
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 the Techline.
AFTER REPAIRRun command AC016 Electrical supply circuits test.
Clear the computer fault memory, switch the + after ignition supply off and back on, and
run another check with the diagnostic tool.
USM_V48_DF032/USM_V4C_DF032

ENGINE COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults87G
87G - 52V7 MR-372-J84-87G050$385.mif
UPC
Vdiag No.: 48, 4C
DF033
PRESENT
OR
STOREDFAN ASSEMBLY SUPPLY CIRCUIT
CO : Open circuit
CC.0 : Short circuit to earth
CO
NOTESSpecial note:
To display this fault as present or stored, run command
AC016 Electrical supply circuits test.
Use Wiring Diagrams Technical Note for Mégane II or
Scénic II.
Check the condition and connection of the fan assembly 2-track black connector (tabs broken, bent or oxidised).
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 connector.
Check the condition and connection of the 6-track Protection and Switching Unit MM connector (tabs broken,
bent or oxidised).
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 connector.
Check the insulation, continuity and the absence of interference resistance on the following connections:
–49R, between components 1337 and 188,
–49L, between components 1337 and 1014,
–49L, between components 1337 and 188.
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.
CC.0
NOTESTo display this fault as present or stored, run command
AC016 Electrical supply circuits test.
Check the insulation, continuity and the absence of interference resistance on the following connections:
–49R, between components 1337 and 188,
–49L, between components 1337 and 1014,
–49L, between components 1337 and 188.
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 the Techline.
AFTER REPAIRRun command AC016 Electrical supply circuits test.
Clear the computer fault memory, switch the + after ignition supply off and back on, and
run another check with the diagnostic tool.
USM_V48_DF033/USM_V4C_DF033

ENGINE COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults87G
87G - 53V7 MR-372-J84-87G050$385.mif
UPC
Vdiag No.: 48, 4C
DF034
PRESENT
OR
STOREDALTERNATOR TYPE
1.DEF : Inconsistency
NOTESSpecial note:
After 10 minutes with the engine running, deal with fault DF007 UPC-alternator
connection first if it is present or stored.
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present with the engine running.
Note the part number of the Protection and Switching Unit LC001, Configurations and programming.
Note the part number of the alternator (information found on the rear alternator face).
Contact the Techline.
AFTER REPAIRClear the computer fault memory, switch the + after ignition supply off and back on, and
run another check with the diagnostic tool.
USM_V48_DF034/USM_V4C_DF034

ENGINE COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults87G
87G - 54V7 MR-372-J84-87G050$385.mif
UPC
Vdiag No.: 48, 4C
DF035
PRESENT
OR
STOREDCOMPUTER SUPPLY VOLTAGE
1.DEF : Voltage too low
NOTESThe fault is declared present after:
A drop in the UPC feed voltage to less than 8 V for longer than 10 seconds.
The fault is declared stored following:
A drop in the UPC feed voltage to less than 8 V for longer than 10 seconds followed
by a rise in the voltage to more than 8 V.
Contact the Techline.
AFTER REPAIRClear the computer fault memory, switch the + after ignition supply off and back on, and
run another check with the diagnostic tool.
USM_V48_DF035/USM_V4C_DF035

ENGINE COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults87G
87G - 55V7 MR-372-J84-87G050$385.mif
UPC
Vdiag No.: 48, 4C
DF036
PRESENT
OR
STOREDSTEERING COLUMN LOCK SUPPLY CIRCUIT
CC.0 : Short circuit to earth
CC.0
NOTESSpecial note:
To display this fault as present or stored, run command
AC016 Electrical supply circuits test.
Use Wiring Diagrams Technical Note for Mégane II or
Scénic II.
Check that the UPC fuse F11 (15A) is sound.
Check the insulation, continuity and the absence of interference resistance on the following connection:
–APCB, between components 1337 and 645.
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 the Techline.
AFTER REPAIRRun command AC016 Electrical supply circuits test.
Clear the computer fault memory, switch the + after ignition supply off and back on, and
run another check with the diagnostic tool.
USM_V48_DF036/USM_V4C_DF036

ENGINE COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check87G
87G-56V7 MR-372-J84-87G050$440.mif
UPC
Vdiag No.: 48, 4CENGINE COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check
MAIN SCREEN
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application conditions: engine stopped, + after ignition feed on.
FunctionParameter or Status
Check or ActionDisplay and Notes Fault finding
Battery voltagePR004:Battery voltage11 V < X < 13.5 V
(engine running:
X < 15.8 V)If there is a fault, refer to the
interpretation of parameter PR004.
Reverse gearET004:Reverse gear
engagedYES
NOIn the event of a fault, refer to the
interpretation of status ET004.
Oil pressureET027:Oil pressure
contactOPEN
CLOSEDNone.
+ 12 V after
ignition feedET003:+ 12 V after
ignition feed relay
controlINACTIVE
ACTIVENone.
StartingET062:UCH request to
injection or
Protection and
Switching UnitENGINE OFF
INACTIVE
+ APC
STARTINGIn the event of a fault, consult the
interpretation of status ET062.
USM_V48_CCONF/ USM_V4C_CCONF
MR-372-J84-87G050$440.mif

ENGINE COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check87G
87G-57V7 MR-372-J84-87G050$440.mif
UPC
Vdiag No.: 48, 4C
KEYLESS VEHICLE
SUB-FUNCTION: STARTING
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application conditions: engine stopped, + after ignition feed on.
FunctionParameter or Status
Check or ActionDisplay and Notes Fault finding
Reverse gearET004:Reverse gear
engagedYES
NOIn the event of a fault, refer to the
interpretation of status ET004.
Manual gearbox
lever positionET005:Manual gearbox
lever positionNOT IN NEUTRAL
NEUTRALNormal statuses.
UNAVAILABLE
INVALIDIn the event of a fault, refer to the
interpretation of status ET004.
Starting
conditions metET010:Starting
conditions metSTATUS 1
STATUS 2
STATUS 3In the event of a fault, consult the
interpretation for status ET010.
YESNormal status.
+ 12 V after
ignition feed
relay controlET003:+ 12 V after
ignition feed relay
control INACTIVE
ACTIVEIn the event of a fault, consult the
interpretation of fault DF032.

ENGINE COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check87G
87G-58V7 MR-372-J84-87G050$440.mif
UPC
Vdiag No.: 48, 4C
FUNCTION: AIR CONDITIONING
SUB-FUNCTION: HEATING
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application conditions: engine stopped, + after ignition feed on.
FunctionParameter or Status
Check or ActionDisplay and Notes Fault finding
Alternator chargePR010:Alternator charge0 < X < 99.6%
With the engine running,
activate the heated rear
screen and check that the
value increases.In the event of a fault, consult
the interpretation of
parameter PR010.
Rear screen de-
icerAC011:Rear screen de-
icerThis command supplies
the rear screen and door
mirror heating resistors, if
fitted to the vehicle.
They should be warm. In the event of a fault, apply the
procedure for dealing with
command AC011.

ENGINE COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check87G
87G-59V7 MR-372-J84-87G050$440.mif
UPC
Vdiag No.: 48, 4C
FUNCTION: AIR CONDITIONING
SUB-FUNCTION: COLD LOOP
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application conditions: engine stopped, + after ignition feed on.
FunctionParameter or Status
Check or ActionDisplay and Notes Fault finding
Compressor
controlAC008:Compressor
controlYou should be able to hear
the compressor clutch
(stops the motor running).In the event of a fault, apply the
procedure for dealing with
command AC008.
Fan assemblyAC009:Low-speed fan
assemblyThis command is used to
activate the fan assembly
at low speed.In the event of a fault, apply the
procedure for dealing with
command AC009.
AC010:High-speed fan
assemblyThis command is used to
activate the engine cooling
fan at high speed.In the event of a fault, apply the
procedure for dealing with
command AC010.
Low-speed
engine fan
assembly relay
controlET014:Low-speed
engine fan
assembly relay
controlINACTIVE
ACTIVEIn the event of a fault, consult
the interpretation for status
ET014.
High-speed
engine fan
assembly relay
controlET013:High-speed
engine fan
assembly relay
controlINACTIVE
ACTIVEIn the event of a fault, consult
the interpretation for status
ET013.

ENGINE COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check87G
87G-60V7 MR-372-J84-87G050$440.mif
UPC
Vdiag No.: 48, 4C
FUNCTION: WIPING
SUB-FUNCTION: WIPER POWER
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application conditions: engine stopped, + after ignition feed on.
FunctionParameter or Status
Check or ActionDisplay and Notes Fault finding
WiperAC005:Low-speed
windscreen wiperThis command is used to
activate the windscreen
wiper motor at low
speed.In the event of a fault, apply the
procedure for dealing with
commands AC005 and AC006.
AC006:High-speed
windscreen wiperThis command is used to
activate the windscreen
wiper motor at high
speed.
Windscreen
wiper protectionET002:Windscreen
wiper protectionINACTIVEIn the event of a fault, refer to the
interpretation for status ET002.
Windscreen
wiper park
positionET018:Windscreen
wiper park
positionPRESENT (if the wiper
is not active)
ABSENTIn the event of a fault, refer to the
interpretation of status ET018.
Headlight
washerAC013:Headlight washer
relayThis command is used to
activate the headlight
washers relay on the
right and left-hand side
alternately.In the event of a fault, apply the
procedure for dealing with
command AC013.