warning RENAULT TWINGO RS 2009 2.G Electrical Equipment - Electric Windows, Sunroof Workshop Manual

87D-5
MR-413-X44-87D000$236_eng.mif
V1
87D
ELECTRIC WINDOWS - SUNROOF
Electric windows: Function
Types
The vehicle can be fitted with two types of front window winders:
–Driver's and passengers' electric windows.
–Driver's anti-pinch and one-touch electric window / passenger's electric window.
Electric windows
The motor feed goes via the switch. The switch reverses the polarity to the motor terminals to lower or raise the
window.
One-touch electric window
The UCH controls this window, both its upward and downward movement, in manual or automatic mode (one-touch).
The UCH can only be controlled by unstable position switches (one up position, one down position). The electrical
signal received by the unit means that the input used is connected to earth.
The switch technology employed means that automatic mode cannot be activated directly (double contact
technology). That is why the electric window switches have two up positions (contacts) and two down positions
(contacts).
Electric mode is activated first (1
st contact) followed by one-touch mode (2nd contact). The direction of movement of
the window is determined by the first input (connection to earth).
First example
Switch pressed in the down direction:
1
st contact = down switch earthed
2nd contact = up switch earthed
The electronic unit activates lowering of the window in one-touch mode.
Second example
Switch pressed in the up direction:
1
st contact = up switch earthed
2nd contact = down switch earthed
The electronic unit activates raising of the window in one-touch mode.
ANTI-PINCH
The anti-pinch function is a statutory requirement, which is also managed by the electronic unit. This stops the
window rising in one-touch mode when it meets an obstacle (e.g. fingers, branches, etc.)
On detecting an abnormal force (more than 80N) in a 250 mm area (between the upper stop of the window and the
window), the system causes the window to lower approximately 50 mm.
WARNING
The anti-pinch function only works if the windows have been correctly initialised (see Initialisation).

New Twingo
MR-413-X44-87D000$236_eng.mif

87D-7
MR-413-X44-87D000$354_eng.mif
V1
87D
ELECTRIC WINDOWS - SUNROOF
Electric windows: Initialisation
Procedure:
Raise the window to the upper limit and maintain the feed at the upper stop for at least 2 seconds.
Causes of loss of initialisation:
–The electronic unit feed is cut off while the electric window is operating or when the UCH is authorising the
operation.
–The theoretical maximum travel goes beyond the upper stop.
–If the correct position was not initialised (obstacle), operation of the window beyond that point will be in jerks
(50 mm stages). WARNING
To obtain one-touch mode and/or manual mode operation (opening and closing) and the anti-pinch function, the
electronic system built into the motor must be correctly initialised.
Note:
A non-initialised system will function while the control switch is pressed, but the window will only travel a
maximum of 50 mm. Every time the switch is pressed the window will travel a similar distance until it reaches the
top stop.

New Twingo
MR-413-X44-87D000$354_eng.mif

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