Wipers and washers (Description): Description and operation (page 3 of 3)
- Make
- Land Rover
- Model
- Discovery II (UK)
- Section
- Description and operation
Variable delay switch
A rotary type variable delay switch, integral with the front wash/ wipe switch, controls the interval between windscreen wipes for intermittent wipe variable delay operation.
The variable delay switch is integral with the front wash/ wipe switch.
The input from the front variable delay switch to the BCU ranges from battery voltage to zero Volts.
The resistance values and associated time intervals of the variable delay switch are shown in the following table:
| Resistance, ohms | Time interval, seconds | |
|---|---|---|
| Front | Rear | |
| 0 | 3.5 | 6.5 |
| 1500 | 5.5 | 10.5 |
| 3000 | 7.5 | 14.5 |
| 4500 | 9.5 | 18.5 |
| 6000 | 11.5 | 22.5 |
TestBook has the ability to monitor the timer function within the BCU from which it can determine the position of the variable delay switch.
Front wiper motor assembly
The front wiper motor assembly is located on the bulkhead beneath the plenum.
Parts & tools for this job For Land Rover Discovery
- PARTWiper bladesSearch: Land Rover Discovery wiper blades
- PARTWasher pumpSearch: Land Rover Discovery washer pump
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