Rear Passenger Doors

Rear Passenger Doors

When the BCU (C0662) receives an unlock signal from the RF receiver, it provides a feed to the RH and LH rear (C0442) door lock motors on a pair of U wires. Current flows across the motors (C0442) to earth path via the BCU (C0662) on a pair of B wires.

When the BCU (C0662) receives a lock signal from the RF receiver, it provides a feed to the RH and LH rear door lock motors (C0442) on a pair of B wires. Current flows across the motors (C0442) to earth via the BCU (C0662) on a pair of U wires.

When the BCU (C0662) receives a superlock signal from the RF receiver, it provides a feed to the RH and LH rear (C0442) superlock motors on a pair of W wires. Current flows across the superlock motors (C0442) to earth via the BCU (C0662) on a pair of U wires.

Tail Door

The non-latching tail door switch is located on the centre console, adjacent to the clock. When the switch is pressed a momentary earth path is created. Sensing this, the BCU (C0662) provides a feed to the upper tail door motor (C0383) on a YN wire. The motor (C0383) is earthed on an N wire.

Once the upper tail door has been opened, the lower tail door can be opened. This can be carried out by pressing the non-latching switch located on the upper edge of the lower tail door.

The BCU (C0660) monitors the condition of the switch (C0615) by providing a feed on a YB wire. When pressed, the switch contacts close and a momentary earth path is created via the rear fuse box. Sensing this, the BCU (C0661) provides a feed to relay 8 of the rear fuse box (C2022) on an NY wire. This feed energises relay 8.

The energised relay 8 (C2022) allows a feed from fuse 16 of the rear fuse box to power the RH lower (C2052) and LH lower (C0617) tail door motors on UW wires. Both motors are earthed on N wires.

Fuel Filler Flap

When the BCU (C0662) receives an unlock signal from the RF receiver, it provides a feed to the fuel filler flap release motor (C0690) on a U wire. On European vehicles, current flows across the motor (C0690) and is provided an earth path via the BCU (C0662) on a W wire. On NAS vehicles, current flows across the motor (C0690) and is provided an earth path via the BCU (C0662) on a B wire.

When the BCU (C0662) receives a lock signal from the RF receiver, it provides a feed to the fuel filler flap release motor (C0690) on a W wire (B wire on NAS vehicles). Current flows across the motor (C0690) and is provided an earth path via the BCU (C0662) on a U wire.