Window lift

WINDOW LIFT

DESCRIPTION

General

Electrically operated windows are installed in the driver and passenger doors. The driver’s window features ’one shot’ opening. Operation of the windows is controlled by switches on the centre console and a window lift ECU at the base of the driver’s side A post. The windows operate when the ignition switch is in position II provided the driver’s door is closed.

OPERATION

Power supplies

Fusible link 3 (C0570) in the under bonnet fuse box supplies a permanent feed to the switch contacts of window lift relay (C0042) and to fuse 6 (C0582) in the passenger compartment fuse box on N wires. Fuse 6 (C0584) supplies the feed to the coil of the window lift relay (C0042), also on a N wire. Fuse 7 (C0572) in the under bonnet fuse box supplies a permanent feed to the multi function ECU (C0016) on a PN wire.

Fusible link 4 (C0570) in the under bonnet fuse box supplies a permanent feed to the ignition switch (C0028) on a NP wire. When the ignition switch is in position II, the feed is connected to fuse 1 in the passenger compartment fuse box by a BY wire. Fuse 1 supplies the feed to the multi function ECU on a G wire. When the driver’s door is closed, the multi function ECU (C0062) is connected to earth on a PW (LHD) or PS (RHD) wire to the driver’s door switch (C1449), and a B wire from the driver’s door switch (C1450) to an earth point (C0564 on LHD) or an earth header (C0018 on RHD). The multi function ECU then connects the BN wire, between the coil of the window lift relay (C0042) and the multi function ECU (C0062), to earth on the B wire between the multi function ECU and an earth header (C0017).

When the window lift relay energises, the feed from fusible link 3 in the under bonnet fuse box is connected to the NU wire between the window lift relay (C0042) and fuses 4 and 5 in the passenger compartment fuse box (C0583). Fuse 4 (C0585) supplies a feed to a SG wire connected to the passenger window switch (C0081 on LHD) or the window lift ECU (C0341 on RHD); fuse 5 (C0585) supplies a feed to a NY wire connected to the window lift ECU (C0341 on LHD) or the passenger window switch (C0081 on RHD).

Passenger’s window

Operating the passenger window switch to lower the window connects the feed from fuse 4 (LHD) or fuse 5 (RHD), in the passenger compartment fuse box, to the SY (LHD) or SB (RHD) wire between the passenger window switch (C0081 on LHD; C0321 on RHD) and the passenger window motor (C0741), which is earthed on a SR (LHD) or SK (RHD) wire from the passenger window motor (C0741) to the passenger window switch (C0081 on LHD; C0321 on RHD), and a B wire between the passenger window switch (C0081 on LHD; C0321 on RHD) and an earth point (C0557). While energised, the passenger window motor runs to lower the window.