Workshop Manuals Factory service & repair Land Rover
01 Discovery Series II - Workshop Manual - 1999MY ON - 6th Edition - NAS02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 INTRODUCTION32 33 GENERAL INFORMATION34 35 GENERAL DATA36 IDENTIFICATION NUMBERS37 38 TORQUE WRENCH SETTINGS39 40 LIFTING AND TOWING41 CAPACITIES, FLUIDS, LUBRICANTS AND SEALANTS42 43 44 MAINTENANCE45 46 ENGINE - V847 48 EMISSION CONTROL - V849 50 ENGINE MANAGEMENT SYSTEM - V851 FUEL DELIVERY SYSTEM - V852 53 COOLING SYSTEM - V854 55 MANIFOLDS AND EXHAUST SYSTEMS - V856 57 58 59 CLUTCH - V860 61 MANUAL GEARBOX - R38062 63 TRANSFER BOX - LT230SE64 65 66 AUTOMATIC GEARBOX - ZF4HP22 - 2467 PROPELLER SHAFTS68 69 REAR AXLE70 71 72 73 74 75 FRONT AXLE76 77 78 79 STEERING80 FRONT SUSPENSION81 82 83 REAR SUSPENSION84 85 86 87 BRAKES88 RESTRAINT SYSTEMS89 90 DOORS91 EXTERIOR FITTINGS92 93 INTERIOR TRIM COMPONENTS94 SCREENS95 96 97 SEATS98 99 SUNROOF100 CHASSIS AND BODY DIMENSIONS101 102 103 104 PANEL REPAIRS105 106 107 108 BODY SEALING MATERIALS109 110 111 112 113 CORROSION PREVENTION AND SEALING114 PAINTING115 HEATING AND VENTILATION116 117 AIR CONDITIONING118 119 WIPERS AND WASHERS120 CHARGING AND STARTING121 122 LIGHTING123 BODY CONTROL UNIT124 125 126 ALARM SYSTEM AND HORN127 128 WINDOWS129 IN CAR ENTERTAINMENT130 HARNESSES131 DRIVING AIDS132 NAVIGATION SYSTEM133 INSTRUMENTS
Land Rover Discovery II119 · WIPERS AND WASHERS
119 · Electrical

WIPERS AND WASHERS: DESCRIPTION AND OPERATION (page 2 of 4)

Make
Land Rover
Model
Discovery II
WIPERS AND WASHERSDESCRIPTION AND OPERATION · page 2 of 4
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WIPERS AND WASHERS

84-18

DESCRIPTION AND OPERATION

Front flick wipe 
Flick wipe operation will only activate when the following conditions are met:

l

Ignition switch is in position I or II.

l

Front flick switch is operated.

Pressing the flick wipe switch operates the front wiper motor at high speed.  The front wiper motor operates as long 
as the flick switch is activated.  Releasing the flick switch causes the front wiper motor to run through the park switch 
circuitry.  The park switch only permits low speed operation.  Thus if the flick switch is pressed and immediately 
released, the wipers operate at low speed.

Rear intermittent wipe variable delay 
The rear intermittent wipe variable delay operation allows the driver to adjust the interval between wipes to suit local 
conditions. Rear variable delay operation only activates if the following conditions are met:

l

Ignition switch in position I or II.

l

Front wash/ wipe switch on intermittent.

l

Rear wipe switch is operated.

The BCU determines the desired delay interval based on the setting of the variable delay switch.  The rear wash/ wipe 
delay is nominally twice as long as that of the front.  This information passes from the IDM to the rear wiper relay and 
activates the rear wiper motor.

If the delay duration is decreased during operation of the rear wiper, the wipers immediately operate once and the 
delay cycle is reset.

If the delay duration is increased during operation of the rear wiper, the delay cycle is automatically increased by the 
BCU. 

Reverse wiping 
Reverse wiping operates the rear wiper motor when reverse gear is selected.  The transmission must be in reverse 
for longer then 0.5 seconds before reversing wipe activates.  Reversing wipe activates if the following conditions are 
met:

l

Ignition switch is in position II.

l

Reverse gear is selected.

l

Rear wiper or front wipers operating.

If the rear wiper is active in any mode when reverse gear is selected, the rear wiper activates for 4 second. After 4 
seconds the rear wiper operates in a delay operation at the same delay interval set by the variable delay switch until 
reverse gear is deselected. 

If the front wipers are operating on either low or high speed when reverse gear is selected, the rear wiper activates 
continuously until reverse gear is deselected.

In order to enable reversing wipe functions, the BCU utilises the reversing light switch located within the transmission 
to determine when reverse gear has been selected. 

If the front intermittent wipe is active when reverse gear is selected, the rear wiper completes 2 cycles before operating 
at the same intermittent delay as the front wipers.

Rear wipe 
Rear wipe operation will only activate when the following conditions are met:

l

Ignition switch is in position II.

l

Rear wipe switch is operated.

Operating the rear wiper switch provides an earth input to the BCU.  The BCU tells the IDM to activate the rear wiper 
relay, which provides battery voltage to the wiper motor through the normally closed contacts of the park switch.

Parts & tools for this job Staging For Land Rover Discovery

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