Control units (Description): Description and operation (page 2 of 3)

Door Open Warning Lamp The CCU illuminates a warning lamp on the instrument pack if the driver's door, passenger door(s), tail door or bonnet is open while the ignition is on.

Key In Alarm The CCU will sound a continuous warning on the integral sounder when the driver's door is open while the key is in the ignition switch at position 0 or I. This is to prevent the driver inadvertently leaving the vehicle with the key in the ignition switch.

Rear Fog Guard Lamps The CCU controls the operation of the rear fog guard lamps via a rear fog guard lamp relay. The guard lamps operate only if the headlamps are on and the ignition switch is in position II. When the headlamps or the ignition are switched off the CCU automatically switches off the guard lamps.

Lights On Alarm The CCU will sound a continuous warning on the integral sounder when the driver's door is open while the side lamps or headlamps are on and the ignition is off. This is to prevent the driver inadvertently leaving the vehicle with the side lamps or headlamps on.

Seat Belt Warning When the ignition is switched on the CCU performs a bulb check of the seat belt warning lamp in the instrument pack for approximately 5 seconds, or until the ignition is switched off or the engine cranks. To prevent a driver inadvertently driving without fastening their seat belt, if the driver's seat belt is unfastened when the ignition is switched on the CCU sounds a warning on the integral sounder for approximately 5 seconds and keeps the seat belt warning lamp illuminated after the bulb check.

Handbrake Warning A warning lamp to warn the driver that the handbrake is on is located in the instrument pack. The warning lamp illuminates when the ignition is on and the handbrake is applied. In some markets the CCU performs a bulb check of the warning lamp for approximately 5 seconds at the beginning of each ignition cycle.

Rear Screen Wiper The CCU controls the rear screen wiper via a forward and a reverse relay. The wiper will not operate if the tail door window is lowered or not calibrated or, on 3 door models, if the roof is open (soft back) or removed (hard back). WIPERS AND WASHERS, DESCRIPTION AND OPERATION, Description.

Tail Door Window The CCU controls the lowering and raising of the tail door window, which can be opened using a console switch or the remote handset. On 3 door models, opening/removal of the roof will automatically lower the window. The window can be raised using the console switch or the vehicle key in the tail door key barrel. When the tail door is opened, the tail door window lowers to a 'clear of seal' position. When the door is closed the window automatically rises to its fully up position. WINDOWS, DESCRIPTION AND OPERATION, Description.

Heated Rear Window (HRW) The CCU controls the operation of the HRW. When the HRW switch, located on the centre of the fascia, is pressed and released a signal is sent to the CCU. With the ignition on, the oil pressure sense present (i.e. the engine running), the tail window not lower than the 'clear of seal' position and, on 3 door models the roof closed/on, the CCU will grant the HRW on. The CCU will energise the HRW relay for approximately 15 minutes after which the CCU will de-energise the HRW relay. A warning lamp in the HRW switch shows when the HRW is operating.

If the switch is pressed before the timed 15 minute period, the CCU will immediately switch off the HRW. Removal of any of the input signals to the CCU will also stop HRW operation. The HRW switch will require re-selection to operate again.