Page 33 of 54
87D-33
MR-413-X44-87D000$472_eng.mif
V1
New TwingoELECTRIC WINDOWS - SUNROOF
Electric windows - Fault finding chart87D
ALP 8The passenger window does not operate at all with the passenger
switch only
Applies to:Driver's one-touch electric windows and passenger's
electric window
Left-hand drive vehicle
NOTESUse Wiring Diagram Technical Note, New Twingo.
Carry out the various checks with the battery charged and + after ignition feed
switched on.
Use a 21 W test light.
Remove the passenger's window winder switch
(see MR 411 mechanical, 87D, Electric
windows - Sunroof,
passenger's door front window winder
switch:
Removal -Refitting) and disconnect its
connector.
Connect a test light to connections MAN and
22C (or 22D) of component 133.
Does the bulb light up correctly?
YES
Replace the passenger's window winder switch
(see MR 411 mechanical, 87D, Electric
windows - Sunroof, passenger's
door front window winder switch:
Removal - Refitting).
NOContinuity fault on connection MAN.
Check that earth MAN is correctly mounted
on the chassis. If the earth is faulty, clean and
retighten it.
Otherwise the fault is caused by the wiring;
if there is a repair procedure (see Technical
Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the
wiring; if not, replace it.
AFTER REPAIRCheck that the electric windows are operating correctly; if not, run fault finding
(see Customer complaints).
Page 34 of 54
87D-34
MR-413-X44-87D000$472_eng.mif
V1
New TwingoELECTRIC WINDOWS - SUNROOF
Electric windows - Fault finding chart87D
ALP 8The passenger window does not operate at all with the passenger
switch only
Applies to:Driver's one-touch electric windows and passenger's
electric window
Right-hand drive vehicle
NOTESUse Wiring Diagram Technical Note, New Twingo.
Carry out the various checks with the battery charged and + after ignition feed
switched on.
Use a 21 W test light.
Remove the passenger's window winder switch
(see MR 411 mechanical, 87D Electric
windows - Sunroof, passenger's
door front window winder switch:
Removal -Refitting) and disconnect its
connector.
Connect a test light to connection MAM and 22C
(or 22D) of component 133.
Does the bulb light up correctly?
YES
Replace the passenger's window winder switch
(see MR 411 mechanical, 87D, Electric
windows - Sunroof, passenger's
door front window winder switch:
Removal - Refitting).
NOContinuity fault on connection MAM.
Check that earth MAM is correctly mounted
on the chassis. If the earth is faulty, clean and
retighten it.
Otherwise the fault is caused by the wiring; if
there is a repair procedure (see Technical
Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the
wiring; if not, replace it.
AFTER REPAIRCheck that the electric windows are operating correctly; if not, run fault finding
(see Customer complaints).
Page 35 of 54
87D-35
MR-413-X44-87D000$472_eng.mif
V1
87D
New TwingoELECTRIC WINDOWS - SUNROOF
Electric windows - Fault finding chart
ALP 9 Driver's window rises jerkily in 50 mm stages
Applies to:Driver's one-touch electric windows and passenger's
electric window
Left-hand drive and right-hand drive vehicles
NOTESThe battery must be charged and + after ignition feed switched on.
The fault is due to a loss of initialisation.
To cure the fault (see Electric sunroof: Initialisation).
AFTER REPAIRCheck that the electric windows are operating correctly; if not, run fault finding
(see Customer complaints).
Page 36 of 54
87D-36
MR-413-X44-87D000$531_eng.mif
V1
87D
ELECTRIC WINDOWS - SUNROOF
Electric windows: List and location of components
1Sunroof opening and closing control
2Electric sunroof motor3Electric sunroof mobile panel
4UCH
1
New Twingo
MR-413-X44-87D000$531_eng.mif
Page 37 of 54
87D-37
MR-413-X44-87D000$590_eng.mif
V1
87D
ELECTRIC WINDOWS - SUNROOF
Electric sunroof: Component functions
●The electric sunroof allows additional air to circulate in the vehicle and lets in more light.
●The electric sunroof switch allows the customer to select any one of four open positions. One tilted position and
three sliding positions.
●The UCH controls the operation of the sunroof.
●The sunroof computer receives the sunroof opening or closing request from the control as well as information on
the vehicle's speed and authorises the sunroof to operate.
●The motor (controlled by the computer) drives a mechanism to make the glass roof slide.
New Twingo
MR-413-X44-87D000$590_eng.mif
Page 38 of 54
87D-38
MR-413-X44-87D000$649_eng.mif
V1
87D
ELECTRIC WINDOWS - SUNROOF
Electric sunroof: Operating diagram
ELECTRIC SUNROOF
1 - Relay/fuse box
2 - UCH
3 - ABS computer
4 - Sunroof opening and closing control
5 - Sunroof computer
6 - Sunroof electric motor
A - Sunroof computer supply
B - Authorisation to operate
C - Vehicle speed
D - Opening or closing request
E - Sunroof motor electric control
1
A
56 2
B
E
3
C
4
D
New Twingo
MR-413-X44-87D000$649_eng.mif
Page 39 of 54
87D-39
MR-413-X44-87D000$708_eng.mif
V1
87D
ELECTRIC WINDOWS - SUNROOF
Electric sunroof: Function
The electric sunroof has four open positions (one tilted position and three sliding positions) controlled by the same
motor. The electric sunroof also has an anti-pinch function.
To operate, the sunroof motor requires a feed which is supplied by its computer. The computer receives signals from
the switch and the authorisation from the UCH (0 V authorisation and 12 V no authorisation). The computer also
receives information about the motor's speed of rotation and direction of rotation.
Anti-pinch function:
Anti-pinch is a safety function that stops the roof closing when it detects a point of resistance (damaged rail, hand
present, etc.)
The detection of an obstacle is based on an analysis of the sunroof motor's speed of rotation.
During the initialisation phase, the motor computer stores the speed curve.
The computer compares the sunroof's speed of movement (motor's speed of rotation) with the stored speed of
movement.
The computer also receives information about the vehicle speed, so that at high speed the wind pressure working
against the closing movement of the roof is taken into account.
Depending on the speed variation detected, the system decides whether or not to trigger the anti-pinch function.
WARNING
The anti-pinch function only operates if the sunroof has been correctly initialised (see Initialisation).
New Twingo
MR-413-X44-87D000$708_eng.mif
Page 40 of 54
87D-40
MR-413-X44-87D000$767_eng.mif
V1
87D
ELECTRIC WINDOWS - SUNROOF
Electric sunroof: Defect and safe modes
INHIBITING THE ANTI-PINCH FUNCTION
The roof mechanism may be subject to various problems (jammed by ice, snow etc. or mechanical damage due to
an accident), therefore, the anti-pinch system must be easy to disable. The electric roof anti-pinch function can be
disabled to overcome a point of resistance (damaged rail, foreign body in the runners).
Mode:
–Index of the switch in the closed position with anti-pinch detection. Hold the centre of the control (1) down until the
anti-pinch function has been triggered.
–The roof closes in single-step mode (or smoothly) in 5 cm stages in the sliding position and in 1 cm stages in the
tilt position until the centre of the control (1) is released.
–When the control is released, the anti-pinch function is reactivated.
–If the sunroof is faulty, it is possible to move the sunroof manually using a flat-blade screwdriver. Note:
If the operation is not carried out immediately after the anti-pinch is triggered, it will not be disabled.
1
New Twingo
MR-413-X44-87D000$767_eng.mif
