87D-50
MR-413-X44-87D000$944_eng.mif
V1
New TwingoELECTRIC WINDOWS - SUNROOF
Electric sunroof - Fault finding chart87D
ALP 3The sunroof does not close when driving
(anti-pinch is triggered)
NOTESUse Wiring Diagram Technical Note, New Twingo.
Carry out the various checks with the battery charged and + after ignition feed
switched on.
Does the sunroof operate when the vehicle is
stationary?
YES
Initialise the sunroof (see Electric sunroof:
Initialisation).
Is the fault still present?
YES
Measure the vehicle speed signal by connecting
a multimeter (in frequency mode) or an
oscilloscope between connection 47F of
connector R301 and the chassis earth (See
ALP 3 Procedure).
Is the vehicle speed signal correct?
YES
Disconnect the sunroof computer connector (see
MR 411 mechanical, 87D,
Electric windows-sunroof, Electric sunroof
computer: Removal - Refitting) and measure
the vehicle speed signal by connecting a
multimeter (in frequency mode) or an
oscilloscope between connection 47F and
connection MAM of component 1579 (See ALP3
Procedure).
Is the vehicle speed signal correct?
YES
NO See ALP 1.
NOFault solved
NO
Continuity fault on connection 47F between
component 1579 and connector R301. Pay
close attention to the intermediate
connector R339.
Disconnect the other components attached to
this connection before working on the wiring
(e.g. radio, electric power-assisted steering).
If there is a repair procedure (see
Technical Note 6015A, Repairing electrical
wiring, W iring: Precautions for repair),
repair the wiring, otherwise replace it.
NO
Replace the sunroof computer (see MR 411
mechanical, 87D, Electric windows -
sunroof, Electric sunroof computer:
Removal - Refitting).
A
87D-51
MR-413-X44-87D000$944_eng.mif
V1
New TwingoELECTRIC WINDOWS - SUNROOF
Electric sunroof - Fault finding chart87D
ALP 3
CONTINUED
Check the insulation and continuity of
connection 47F between components 1094 and
1579; be careful of the intermediate connectors
R339 and R301.
Is the connection OK?
Carry out fault finding on the ABS (see 38 C,
Anti-lock braking system, Introduction).
If there is a repair method (See Technical
Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the
wiring, otherwise replace it.
After the wiring has been repaired, carry out
an initialisation (see Electric sunroof:
Initialisation).
Disconnect the other components attached to
this connection before working on the wiring
(e.g.: radio, electronic power-assisted
steering).
A
