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 Operation57 · WIPERS AND WASHERS
57 · Electrical

Front Wipers (page 2 of 4)

Make
Land Rover
Model
Range Rover L322 Range Rover System Description and Operation
Section
Description
WIPERS AND WASHERSFront Wipers · page 2 of 4
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WIPERS AND WASHERS

DESCRIPTION AND OPERATION

84-9

Wiper Motor
The motor assembly comprises a dc motor which drives a gear wheel via a worm drive attached to the motor spindle. 
The gear wheel has a central spigot which provides the attachment point for the motor crank.

The motor is connected electrically by a four pin connector. The connector supplies two battery voltage feeds to the 
motor. The motor has three sets of brushes with one brush connected to ground. One feed is direct to the motor brush 
opposite the ground brush and operates the motor at normal (slow) speed. The second feed is connected to a motor 
brush which is offset from the ground brush and operates the motor at fast speed. With the power supplied through 
this brush, the current flows through fewer coil windings. This results in a lower resistance to the current flow to the 
ground brush and gives a higher motor rotational speed.

Output control of the wiper motor is through a double contact relay. The relay is located in the engine compartment, 
adjacent to the transfer box ECU, behind the battery. The relay is a tan colour for identification.

The motor has an internal track which signals the BCU when the wipers have reached the park position. The park 
signal is an open circuit when the wipers are in the park position. When the wipers are switched off and the BCU 
receives the park position signal from the motor, the BCU shorts the motor via a relay bridge circuit. This short circuit 
has the effect of applying a brake to the motor, giving precise positioning of the wiper blades in the park position.

Wiper Arms

1 Blade locking clip
2 Wiper arm collet
3 Wiper arm
4 Spindle cap
5 Self locking nut

6 Wiper angle adjust shim
7 Wiper angle adjuster
8 Wiper blade
9 Air deflector

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