DESCRIPTION AND OPERATION Roof On Switch (3 Door Vehicles Only) The roof on switch (C0497) is located on the RH 'D' post, and is provided a constant battery feed by fuse 14 of the passenger compartment fuse box (C0583) on a P wire. The roof on switch is closed when the hard back is fitted, or the soft back is in the fitted position. In this instance, current flows across the switch (C0497) to the CCU (C0428) on a PY wire. If the hard back is removed (or the soft back is folded down) the roof on switch becomes open circuit, and the feed to the CCU is removed. By monitoring the state of the roof on switch, the CCU can determine if the roof has been opened illegally and sound the alarm if necessary. Anti-theft Alarm LED Fuse 14 of the passenger compartment fuse box (C0589) provides a constant battery feed to the anti-theft alarm LED mounted in the instrument pack (C0230) on a P wire. The earth path for the LED (C0235) is controlled by the CCU (C0592) on a UK wire. By switching the earth path on and off, the CCU can control the flashing sequence of the LED. Inertia Switch Fuse 10 of the engine compartment fuse box (C0575) provides a constant battery feed to the inertia switch (C0123) on a G wire. The inertia switch is a normally closed switch. On K1.8 and KV6 vehicles, the inertia switch (C0123) is connected to the CCU (C0428) via the engine compartment fuse box by a GU then UG wire. On Td5 vehicles the inertia switch (C0123) is connected to the CCU (C0428) by a GU wire. When the inertia switch is tripped the switch opens, cutting the voltage supply to the CCU. Sensing this, the CCU unlocks all doors and cuts the electrical supply to the fuel pump. NOTE: The CCU will only unlock all doors if the ignition is switched on, and the anti-theft alarm isn't armed. For more information on the fuel pump, refer to the relevant Charging and Starting section of this manual. + CHARGING AND STARTING – Td4. + CHARGING AND STARTING – K SERIES. + CHARGING AND STARTING – KV6. Volumetric Sensor The CCU (C0429) provides a feed to the volumetric sensor (C0358 on 3 door vehicles, C1896 on 5 door vehicles) on a WB wire. When the alarm is armed, the volumetric sensor (C0358 on 3 door vehicles, C1896 on 5 door vehicles) returns a signal feed back to the CCU (C0428) on an NB wire. If the sensor detects movement within the vehicle, it withdraws the signal feed to the CCU. Sensing this, the CCU will sound the alarm.
FREELANDER 02MY
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