fog light bulb RENAULT SCENIC 2008 J84 / 2.G Passenger Comparment Connection Unit Workshop Manual

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-43
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-43V9 MR-372-J84-87B000$129.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
4FUNCTION: LIGHTING
4.1 Sub-function: LIGHTING CONTROL
The UCH receives the request from the driver, from the lighting stalk, from the hazard warning lights button and, if
fitted to the vehicle, from the light detector.
The UCH requests the Protection and Switching Unit, via the multiplex network, to provide power to the side lights,
dipped headlights, main beam headlights and fog lights (front).
If a request to activate the lighting is made, the UPC provides power to the xenon bulb computers.
The dipped headlights are still supplied when the main beam headlights are activated.
The following statuses can be displayed:
ET081 Lighting stalk position.
ET082 Rear fog lights request.
ET085 Hazard warning lights switch.
ET083 Left-hand direction indicator request.
ET084 Right-hand indicator request.
If the UCH cannot determine the position of the control stalk, or inform the Protection and Switching Unit of the
control stalk's position, the Protection and Switching Unit will activate the dipped headlights.
4.2 Sub-function: LIGHTING POWER
The UCH controls the power supply for the rear fog light (a single one), direction indicators and interior lighting (roof
lights and footwell/floor lights).
The interior lighting request can be displayed using the ET112 Interior lighting control status.
Operation of the lights powered by the UCH can be checked using the actuator commands AC009 Rear fog lights,
AC022 Left-hand direction indicator, AC023 Right-hand direction indicator, AC021 Interior lights and AC027
Footwell/floor lighting.
Information displays Rain and light sensor Multiplex network
Steering column
controlUCHProtection and Switching
Unit
Rear fog light
Direction indicators
Interior lighting
Side lightsMain beam
headlights
Dipped
headlightsFront fog lights

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of commands87B
87B - 254
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of commands87B
87B - 254V9 MR-372-J84-87B000$774.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
AC008
FRONT FOG LIGHTS
NOTESCheck:
–the condition and connection of the front fog lights fuse,
–the condition of the bulbs.
Replace the bulbs if necessary.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
The rear screen wiper does not operate when the command is activated.
Check the condition and connection of connector PPA on the UPC (Vdiag 44) or connector AN on the UPC
(Vdiag 48 or above).
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 bulb connectors.
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 R9 connection then check the connections of the bulb connectors.
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 fog light connectors they are being controlled by command AC004.
If the + 12 V on the connectors is correct, replace the bulb(s).
Check the insulation and continuity of the following connections:
●Connection code 8F between components 176 and 1337.
●Connection code 8E between components 177 and 1337.
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 - 255
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of commands87B
87B - 255V9 MR-372-J84-87B000$774.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
AC009
REAR FOG LIGHTS
NOTESNo faults should be present or stored.
This command is for testing operation of the rear fog lights.
Check the bulbs.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
Left-hand drive
Check the condition and connection of the connector for each rear light.
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 MZ on component 173.
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.
With the command running, check for + 12 V feed on connection 9P of component 173.
If the + 12 V feed is correct, check the bulbs again and if the bulbs still do not work, replace the rear light.
Check the condition and connection of UCH connector PP3.
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 9P between components 645 and 173.
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 - Customer complaints
87B
87B -293
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Customer complaints
87B
87B -293V9 MR-372-J84-87B000$860.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Customer complaints
NOTESOnly consult these customer complaints after a complete check using the diagnostic
tool.
NO DIALOGUE WITH THE COMPUTER ALP1
LIGHTING
NO REAR FOG LIGHTS ALP2
NO RIGHT-HAND DIRECTION INDICATOR ALP3
NO LEFT-HAND DIRECTION INDICATOR ALP4
NO SIDE LIGHTS (LIGHTS WITHOUT XENON BULB)ALP5
NO DIPPED BEAM LIGHTS (LIGHTS WITHOUT XENON BULB)ALP6
NO MAIN BEAM LIGHTS (LIGHTS WITHOUT XENON BULB)ALP7
NO FRONT FOG LIGHTS ALP8
MR-372-J84-87B000$860.mif

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