Workshop Manuals Factory service & repair Land Rover
01 Range Rover 2002MY ON Workshop Manual - System Description and Operation - LM - 6th Edition - NAS02 03 04 05 06 07 08 09 ENGINE - V810 11 12 ENGINE MANAGEMENT SYSTEM – V813 14 FUEL DELIVERY SYSTEM – V815 16 17 18 19 20 COOLING SYSTEM – V821 22 MANIFOLDS AND EXHAUST SYSTEM – V823 TRANSFER BOX24 AUTOMATIC TRANSMISSION – ZF 5HP2425 26 DRIVE AND PROPELLER SHAFTS27 28 FINAL DRIVE29 STEERING30 31 SUSPENSION32 33 34 35 BRAKES36 37 38 RESTRAINT SYSTEMS39 40 41 DOORS42 INTERIOR TRIM COMPONENTS43 44 45 SCREENS46 SEATS47 48 SUNROOF49 50 AIR CONDITIONING51 52 53 54 55 56 57 WIPERS AND WASHERS58 59 CHARGING AND STARTING60 61 62 63 64 LIGHTING65 66 BODY CONTROL UNIT67 68 COMMUNICATION DATA BUSES69 70 71 SECURITY72 WINDOWS73 74 75 ENTERTAINMENT AND INFORMATION SYSTEMS76 DRIVING AIDS77 78 INSTRUMENTS
Land Rover L322 Range Rover System Description and Operation76 · DRIVING AIDS
76 · General

General

Make
Land Rover
Model
Range Rover L322 Range Rover System Description and Operation
Section
Operation › General
DRIVING AIDSGeneral
background image

DRIVING AIDS

86-10-6 DESCRIPTION AND OPERATION

Operation

General
When the ignition switch is in position II and either reverse gear is selected or the parking switch is pressed, both sets 
of acoustic sensors are activated. The PDC ECU only activates the system if reverse is selected for more than 1 
second, to avoid nuisance audible warnings when the gear selector lever is being moved between Drive and Park. 
The rear sensors are disabled when a trailer is connected to the vehicle.

 Park Distance Control Detection Areas

A = Intermittent warning tone; B = Continuous warning tone

When it activates the system, the PDC ECU illuminates the indicator LED in the parking switch, switches on the 
ultrasonic sensors and generates a single chime on the PDC sounder and the instrument pack sounder to indicate 
the system is active. The PDC ECU then processes the distance readings from the ultrasonic sensors to determine if 
there are any objects within the detection areas.

If there are no objects in the detection areas, there are no further audible warnings. If an object is detected, repeated 
audible warnings are produced on the PDC sounder or the instrument pack sounder as appropriate. The time delay 
between the audible warning tones decreases as the distance between the detected object and the vehicle decreases 
until, at approximately 250 mm (10 in), the audible warning tone is continuous.

After the initial detection of an object, if there is no decrease in the distance between the object and the vehicle:

l

If the object is detected by one of the central acoustic sensors the time delay between audible warning tones 
remains constant 

l

If the object is detected by a corner transducer the audible warning tones stop after approximately 3 seconds.

The audible warning tones are discontinued when the gearbox selector lever is moved out of reverse, but will restart 
if the PDC ECU detects a decrease in the distance between the vehicle and an object.

System operation is cancelled when the parking switch is pressed or the ignition is switched off. System operation is 
also cancelled if the vehicle travels more than 50 m (164 ft) or forward speed exceeds 19 mph (30 km/h).

700mm (27.5in)

250mm (10in)

600mm (23.5in)

'Y'

'Y'

1500mm (59in)

250mm (10in)

'Y'-'Y'

M86 5805

A

B

600mm (23.5in)

'X'-'X'

'X'

'X'

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