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87B-77
MR-413-X44-87B000$480.mif
V5
UCH
Vdiag No.: 44PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check87B
LIGHTING FUNCTION
SUB-FUNCTION: LIGHTING CONTROL
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application condition: engine stopped, + after ignition feed present.
FunctionParameter or Status
Checked or ActionDisplay and notes Fault finding
Lighting controlET081:Lighting switch
positionSIDE
DIPPED
MAIN BEAM
HEADLIGHTS
HAZARD LIGHTSIn the event of a fault, refer to the
interpretation for status ET081.
ET085:Hazard warning
lights buttonDEPRESSED
RELEASEDIn the event of a fault, refer to the
interpretation for status ET085.
Lighting requestET115:Request to switch on
lights by light sensorPRESENT
ABSENTIn the event of a fault, refer to the
interpretation for status ET115.
ET111:Front fog lights
requestPRESENT
ABSENTIn the event of a fault, refer to the
interpretation for status ET111.
ET082:Rear fog lights
requestPRESENT
ABSENTIn the event of a fault, refer to the
interpretation for status ET082.
ET083:Left-hand indicator
requestPRESENT
ABSENTIn the event of a fault, refer to the
interpretation of statuses
ET083 and ET084.
ET084:Right-hand indicator
requestPRESENT
ABSENT
TailgateET463:Door(s) or tailgateOPEN
CLOSEDIn the event of a fault, consult the
interpretation of status ET463.
Vehicle speedPR008:Vehicle speed0 mphIn the event of a fault, run fault
finding on the ABS system (see
38C, Anti-lock braking system).
Page 78 of 179

87B-78
MR-413-X44-87B000$480.mif
V5
UCH
Vdiag No.: 44PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check87B
SUB-FUNCTION: LIGHTING OUTPUT
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application condition: engine stopped, + after ignition feed present.
FunctionParameter or Status
Checked or ActionDisplay and notes Fault finding
Front fog lightsAC008:Front fog lightsThis command is used to
activate the front fog
light.In the event of a fault, apply the
interpretation of DF108.
Rear fog lightsAC009:Rear fog lightsThis command is used to
activate the rear fog light.In the event of a fault, apply the
interpretation of DF109.
Direction indicatorsAC022:Left-hand
direction
indicatorsThis command is used to
activate the left-hand
direction indicators.In the event of a fault, refer to the
interpretation for fault DF013
Left-hand direction indicator
circuit.
AC023:Right-hand
direction
indicatorsThis command is used to
activate the right-hand
direction indicators.In the event of a fault, refer to the
interpretation for fault DF012
Right-hand direction indicator
circuit.
LightsAC055:Side lightsThis command enables the
side lights to be activated.In the event of a fault, apply the
interpretation of DF087.
AC054:Dipped
headlightsThis command enables the
dipped beam headlights to
be activated.In the event of a fault, apply the
interpretation of DF088.
Page 79 of 179
87B-79
MR-413-X44-87B000$480.mif
V5
UCH
Vdiag No.: 44PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check87B
SUB-FUNCTION: LIGHTING OUTPUT (CONTINUED)
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application condition: engine stopped, + after ignition feed present.
FunctionParameter or Status
Checked or ActionDisplay and
NotesFault finding
Lights (continued)AC062:Main beam
headlightsThis command enables the
headlights to be activated.In the event of a fault, apply the
interpretation of DF098.
AC063:Progressive
switching on and off
of the courtesy lightThis command is used to
check that the gradual
courtesy light activation and
deactivation function is
operating correctly.In the event of a fault, apply the
interpretation of DF139.
Temperature
displayAC110:Temperature display Controls the display.In the event of a fault, apply the
interpretation of command
AC110.
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87B -108
MR-413-X44-87B000$576.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
UCH
Vdiag No.: 44
87B
ET081
LIGHTING STALK POSITION
NOTESNo faults should be present or stored.
Check the following configurations:
–Check that LC008 Daytime running lights is With. Otherwise carry out CF014
"Daytime running lights".
–Check that LC015 Front fog lights is With. Otherwise run CF021 Front fog
lights.
–Check that LC025 "See-me-home lighting" is "With". Otherwise carry out
CF032 "See-me-home lighting".
–Check that LC044 "Rain/light sensor" displays "Present". If not, carry out
CF035 "Rain/light sensor".
–Check that LC095 "Automatic headlight function", displays "With". If not, carry
out CF193 "Automatic headlight function".
SPECIFICATIONSHAZARD LIGHTS
SIDE
DIPPED
MAIN BEAM HEADLIGHTS
Check that fuses F13 (30 A), F15 (5 A) (without automatic headlighting) or F15 (15A) (with automatic
headlighting) is sound and correctly fitted in the passenger compartment fuse and relay box
(component code 1016).
Check the condition and connection of the monolever connector (component code 209) and the UCH 40-track
connector PE2 (component code 645) (tabs bent, broken or oxidised).
If the connector is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
AFTER REPAIRRepeat the conformity check from the start.
Carry out fault finding on the system.
UCH_V44_ET081
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87B -109
MR-413-X44-87B000$576.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
UCH
Vdiag No.: 44
87B
ET081
CONTINUED 1
Checking the monolever (component code 209):
Check the insulation, continuity and the absence of interference resistance on the following connections:
Side lights:
With automatic headlighting:
●Connection code 78B between components 209 and 645.
●Connection code BPA2 between components 1016 and 209.
●Connection code BPA3 between components 1016 and 209.
●Connection code MAN or MAM between component 209 and earth MAN or MAM (depending on the driving
layout, right- or left-hand drive).
Dipped headlights:
With automatic headlighting:
●Connection code 78Q between components 209 and 645.
●Connection code BPA2 between components 1016 and 209.
●Connection code BPA3 between components 1016 and 209.
●Connection code MAN or MAM between component 209 and earth MAN or MAM (depending on the driving
layout, right- or left-hand drive).
AFTER REPAIRRepeat the conformity check from the start.
Carry out fault finding on the system.
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87B-110
MR-413-X44-87B000$576.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
UCH
Vdiag No.: 44
87B
ET081
CONTINUED 2
Main beam headlights:
With automatic headlighting:
●Connection code 11Q between components 209 and 645.
●Connection code 11R (headlight flash) between components 209 and 645.
●Connection code BPA2 between components 1016 and 209.
●Connection code BPA3 between components 1016 and 209.
●Connection code MAN or MAM between component 209 and earth MAN or MAM (depending on the driving
layout, right- or left-hand drive).
Fog lights:
With automatic headlighting:
●Connection code 8H (front fog light) between components 209 and 645.
●Connection code 9B (rear fog light) between components 209 and 645.
●Connection code BPA2 between components 1016 and 209.
●Connection code BPA3 between components 1016 and 209.
●Connection code MAN or MAM between component 209 and earth MAN or the (depending on the driving
layout, right- or left-hand drive).
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 feeds, earth and connections are correct, replace the monolever (component code 209). (See MR 411
Mechanical systems 84A, Controls - Signals, Lighting and signals switch:
Removal - Refitting)
If the fault is still present, contact Techline.
AFTER REPAIRRepeat the conformity check from the start.
Carry out fault finding on the system.
Page 164 of 179
87B -164
MR-413-X44-87B000$864.mif
V5
87B
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Customer complaints
NOTESSpecial notes:
This summary corresponds to the complete list of customer complaints for a UCH.
These customer complaints are divided by function in the section corresponding to the
function concerned.
DIALOGUE FAULT87B
NO DIALOGUE WITH THE COMPUTER ALP 1
LIGHTING80D
NO REAR FOG LIGHTS ALP 2
NO RIGHT-HAND DIRECTION INDICATOR ALP 3
NO LEFT-HAND DIRECTION INDICATOR ALP 4
NO SIDE LIGHTS ALP 5
NO DIPPED BEAM HEADLIGHTS ALP 6
NO HEADLIGHTS ALP 7
NO FRONT FOG LIGHTS ALP 8
LIGHTS DO NOT SWITCH OFF AFTER + AFTER IGNITION
FEED IS CUT AND DRIVER'S DOOR IS OPENEDALP 9
LIGHTS DO NOT SWITCH ON AT NIGHT ALP 10
NO SEE-ME-HOME LIGHTING ALP 11
NO COURTESY LIGHTS ALP 12
MR-413-X44-87B000$864.mif
UCH
Vdiag No.: 44