2009 RENAULT TWINGO RS warning light

87B-96
MR-413-X44-87B000$576.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
UCH
Vdiag No.: 44
87B
ET044
ELECTRIC DOOR LOCK BUTTON
NOTESNo faults should be present or stored.
Only apply the checks if the PRESSED and RELEASED statuses are inconsistent
with the actual position of the electric door locking button.
SPECIFICATIONSPRESSED
RELEASED
Check the following configurations:
–Check that LC003 Deadlocking is With. Otherwise carry out CF009 Deadlocking.
–Check that LC040 Automatic locking when driving is With. Otherwise carry out CF108 Automatic locking
when driving.
–Check that LC093 Central door locking is W ith. Otherwise perform CF192 Central door locking.
Check that fuse F42 (10 A) is sound and correctly fitted to the passenger compartment fuse and relay box
(component code 1016).
Replace the fuse if necessary.
Check the condition and connection of the door lock switch/hazard warning lights switch connector (component
code 1391) (bent, oxidised, broken tabs).
Check the condition and connection of the UCH PE1 and PE2 connectors (component code 645) (tabs bent,
oxidised or broken).
If the connector(s) are faulty and 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 + 12 V on deadlocking/warning switch connection LPD (component code 1391).
Check for the earth on connection MAN of the locking / hazard warning lights switch (component code 1391).
AFTER REPAIRRepeat the conformity check from the start.
Carry out fault finding on the system.
UCH_V44_ET044

87B-97
MR-413-X44-87B000$576.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
UCH
Vdiag No.: 44
87B
ET044
CONTINUED
Check the insulation, continuity and the absence of interference resistance on the following connections and
press the central door locking button to check the signal status on the following connections using the
oscilloscope (see signal status in test1 “Central door locking”):
●Connection code 64F between components 645 and 1391.
●Connection code 64Q between components 645 and 1391.
●Connection code 20M between components 1391 and 645.
●Connection code 20AW between components 1391 and 645.
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.
On component 1391, with the lock button pressed, check the continuity between connections 20AW and MAN.
On component 1391, with the lock button released, check the insulation between connections 20AW and MAN.
If the fault is still present, replace the central door locking/hazard warning lights switch (component code 1391).
(See MR 411 84A, Controls - Signals, Hazard warning lights and central door locking:
Removal - Refitting).
AFTER REPAIRRepeat the conformity check from the start.
Carry out fault finding on the system.

87B-116
MR-413-X44-87B000$624.mif
V5
87B
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
ET085
HAZARD WARNING LIGHTS BUTTON
NOTESThere must be no present or stored faults.
Check the following configuration:
–Check that LC018 Hazard warning lights switched on by ABS is definitely With.
Otherwise, run CF024 Illumination of hazard warning lights by ABS.
SPECIFICATIONSDEPRESSED
RELEASED
Check the presence and condition of fuse F42 (10 A) in the passenger compartment fuse and relay box
(component code 1016).
Replace the fuse if necessary.
Check the condition and connection of the central door locking/warning switch connector (component code 1391)
(tabs broken, bent, oxidised).
Check the condition and connection of the PE1 connector of the UCH, (component code 645) (tabs bent,
oxidised, broken).
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.
Check for + 12 V on connection LPD of the locking/warning switch (component code 1391).
Check for earth on connection MAN of the locking/warning switch (component code 1391).
Check for + 12 V on connection 64D (when there is a hazard warning lights request) on components 255, 267 and
172.
Check for earth on components 255, 267 and 172 (indicator lights).
Check for + 12 V on connection 64C (when there is a hazard warning lights request) of components 256, 268 and
173 (indicator lights). Check for earth on components 256, 268 and 173.
AFTER REPAIRRepeat the conformity check from the start.
Carry out fault finding on the system.
UCH_V44_ET085
MR-413-X44-87B000$624.mif
UCH
Vdiag No.: 44

87B-117
MR-413-X44-87B000$624.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
UCH
Vdiag No.: 44
87B
ET085
CONTINUED
Lights check:
Check the insulation, continuity and the absence of interference resistance of the following connections:
Front right-hand lights:
●Connection code 64D between components 255 and 645.
●Connection code MAR between component 1391 and earth MAR.
Front left-hand lights:
●Connection code 64D between components 256 and 645.
●Connection code MAS between component 1391 and earth MAS.
Right-hand repeater:
●Connection code 64D between components 267 and 645.
●Connection code MAR between component 1391 and earth MAR.
Left-hand repeater:
●Connection code 64D between components 268 and 645.
●Connection code MAN between component 1391 and earth MAN.
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 supplies, earths and connections are correct, replace the component concerned.
Check for + 12 V on connection LPD of component 1391.
Check for earth on connection MAN of component 1391.
Switch check:
Check the insulation, continuity and the absence of interference resistance of the following connections:
●Connection code 64F between components 1391 and 645.
●Connection code 64Q between components 1391 and 645.
●Connection code MAN between component 1391 and earth MAN.
●Connection code LPD between components 1391 and 1016.
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 supply, earth and connections are correct, replace the door locking/warning switch (component code
1391). (see MR 411 Mechanical 84A, Control - Signals, Hazard warning lights and central door locking:
Removal - Refitting).
If the fault is still present, contact the Techline.
AFTER REPAIRRepeat the conformity check from the start.
Carry out fault finding on the system.

87B -138
MR-413-X44-87B000$624.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
UCH
Vdiag No.: 44
87B
*Powerlatch: Time required for injection computer supply after + 12 V after ignition feed cut-off to the ignition switch. ET250
INJECTION
NOTESThere must be no present or stored faults.
Switch on the + after ignition feed for 20 seconds, switch off the ignition, wait until the
end of Powerlatch* (20 minutes maximum), then switch on the ignition again.
Check that the immobiliser warning light remains lit.
SPECIFICATIONSNOT PROTECTED
PROTECTED
After the setpoint has been obtained, if the status remains PROTECTED, first check that statuses ET046 Engine
immobiliser, ET181 Key allocated to vehicle and ET229 Injection immobiliser code are operating correctly.
Carry out a multiplex network test (see 88B, Multiplexing).
Carry out fault finding on the injection system (see 13B, Diesel injection or 17B, Petrol injection).
If the fault is still present, contact the Techline.
AFTER REPAIRRepeat the conformity check from the start.
Carry out fault finding on the system.
UCH_V44_ET250

87B -141
MR-413-X44-87B000$624.mif
V5
UCH
Vdiag No.: 44PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses87B
AFTER REPAIRRepeat the conformity check from the start.
Carry out fault finding on the system.
Special feature: Depending on the vehicle equipment, an additional fuse and diode are present on the
wiring: ET463
CONTINUED 2
Check the insulation, continuity and the absence of interference resistance of the following connections:
Central door locking/warning switch check (component code 1391):
●Connection code 20AW between components 645 and 1391.
●Connection code 20M between components 645 and 1391.
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 connections are correct, replace the central door locking/warning switch (component code 1391).
(See MR 411 Mechanical 84A, Control - Signals, Hazard warning lights and central door locking:
Removal - Refitting).
With the engine running, check that the door
open warning (buzzer) is active when the driver
door is open and the lights are on.
Is the warning active?
NO
Check the continuity of connection H24 between
components 140 and 1016 and between
components 119 and 1016.
Is the continuity correct?
NO
C
YESB

87B -154
MR-413-X44-87B000$816.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of commands
UCH
Vdiag No.: 44
87B
AC004
AC005
CONTINUED 2
Checking the electric central door locking, tailgate lock and central door locking relay (component code
1322):
Check the insulation, continuity and the absence of interference resistance on the following connections:
Door locks:
●Connection code 20C between components 140 or 141 and 645.
●Connection code 20D between components 140 or 141 and 645.
●Connection code 20AP between components 140 or 141 and 1042 (if deadlocking).
●Connection code MAN (right-hand motor) or MAM (left-hand motor) between component 140 or 141 and
the earth MAN (right-hand motor) or MAM (left-hand motor).
Tailgate lock check:
●Connection code 20S between components 1322 or 645.
●Connection code 86H between components 1322 or 645.
●Connection code MYH between component 1322 and earth MYH.
For manual gearbox:
●Connection code 86H between components 140 or 141 and 1016.
For sequential gearbox:
●Connection code H24 between components 140 and 1016.
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.
Vehicle which is equipped with deadlocking function:
If the supplies and connections of the electric central door and tailgate locking are correct, check the central door
locking relay (Component code 1042).
Check the insulation, continuity and the absence of interference resistance on the following connections:
Central door locking relay check:
●Connection code BP3 between components 1042 and 1016.
●Connection code MAM between component 1042 and earth MAM.
●Connection code 20AP between components 1042 and 645.
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 supply, connections and earth of the central door locking relay are correct, replace the relay.
If the feeds, the electric door locking connections, the locking relay (Connection code 1042) and the electric
central door locking are correct, check the door lock switch / hazard warning light switch (component
code 1391).
AFTER REPAIRCarry out another fault finding check on the system.

87B -155
MR-413-X44-87B000$816.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of commands
UCH
Vdiag No.: 44
87B
AC004
AC005
CONTINUED 3
Check the insulation, continuity and the absence of interference resistance on the following connections:
Central door locking/warning switch check:
●Connection code 20AW between components 645 and 1391.
●Connection code 20M between components 645 and 1391.
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 connections are correct, replace the central door locking/hazard warning lights switch (Component code
1391). (See MR 411 mechanical systems 84A, Controls - Signals, Hazard warning lights and central door
locking: Removal - Refitting).
If the fault is still present, replace the door lock affected (passenger door lock (component code 141) or
passenger door lock (component code 140)).
AFTER REPAIRCarry out another fault finding check on the system.