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All pictures and texts in this web page are the property of nomaallim.com. Any use of any part of those contents without the written consent of nomaallim.com shall be subject to legal procedures as per international and local laws in the concerned country. Using the name "nomaallim" or "nomaallim com" or "nomaallim.com" in the text describing the unauthorized copied content shall not constitute an exception and shall be sanctioned in accordance to the effective laws and proceedings.
BEFORE YOU START
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DISCLAIMER:
Our pictorials are of informative nature and do illustrate works carried out by ourselves at our own premises for our own use and satisfaction.
Readers who envisage to carry out similar works inspired by the below method shall do this at their own risks and liability.
Our pictorials are of informative nature and do illustrate works carried out by ourselves at our own premises for our own use and satisfaction.
Readers who envisage to carry out similar works inspired by the below method shall do this at their own risks and liability.
NOTE: the below works occurred on a Renault Duster but the repair is common to all vehicles
Windshield washer pump diagnostic and fault finding
Diagnostic:
If your windshield wipers are operating normally and the washer pump makes no noise when you activate it, then:
If your windshield wipers are operating normally and the washer pump makes no noise when you activate it, then:
- This is not a fuse problem since the washer pump shares the same fuse than the wipers
- The washer pump can be defective, or
- The wiring of the washer pump is defective.
Fault finding:
The washer pump is either located inside the fender or below the windshield like it is shown here, a Dacia / Renault Duster in this case.
The washer pump is either located inside the fender or below the windshield like it is shown here, a Dacia / Renault Duster in this case.
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If it is inside the fender like in this picture, visit our page for inner fender mudguard removal to access the pump.
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The grille below the windshield is first cleaned from tree leaves, debris, etc. with compressed air (middle).
The dismantling starts by removing whatever blocks the grille removal like this small rubber seal (right).
The dismantling starts by removing whatever blocks the grille removal like this small rubber seal (right).
The retaining clips are then removed and the same for the rubber seal below the hood (right).
Detach now the washer hose from the T that distributes it to the washer nozzles and from its supports in the hood and on the grille.
Take out the grille.
The wiring of the pump is badly worn and its insulation damaged: no doubt it's a mouse attack!
The mouse also tasted the rubber hose sending the washer liquid to the wiper of the rear window.
The wiring of the pump is badly worn and its insulation damaged: no doubt it's a mouse attack!
The mouse also tasted the rubber hose sending the washer liquid to the wiper of the rear window.
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The missing insulation and the traces of teeth on it are typical to mice and rats. A rat cannot access this pump but a mouse can!
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Repairing the windshield washer pump wiring
Cut the damaged portion of the wires and remove them along with the connector.
Use a 3 to 4 mm slotted screwdriver to open the connector and take out the small plastic cap.
Use a 3 to 4 mm slotted screwdriver to open the connector and take out the small plastic cap.
Remove the silicone seal (green color, left picture).
Your wires are now free as shown in the middle picture but still hold to their terminal pins.
Take out the terminal pins holder (yellow color, right picture) and push the pins out with your screwdriver.
It is very difficult to extract the pins without damaging the small plastic "legs" that do hold them in place inside the connector but this is OK. The connector can still be assembled as shown further below even with little damage.
Your wires are now free as shown in the middle picture but still hold to their terminal pins.
Take out the terminal pins holder (yellow color, right picture) and push the pins out with your screwdriver.
It is very difficult to extract the pins without damaging the small plastic "legs" that do hold them in place inside the connector but this is OK. The connector can still be assembled as shown further below even with little damage.
Windshield washer pump wiring: fitting new wires
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The connector parts are shown in the left picture:
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Insert them into the silicone seal and insert a heat shrink sleeve on top of each soldered joint.
Use a heat gun or hair dryer to shrink the sleeves and reassemble your connector.
Use a heat gun or hair dryer to shrink the sleeves and reassemble your connector.
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Windshield washer pump wiring refitting on vehicle
Plug the connector into the pump.
Now the new wires need to be connected to the ones in the vehicle.
Small crimping lugs are used.
Now the new wires need to be connected to the ones in the vehicle.
Small crimping lugs are used.
Male and female terminals are crimped then the wires assembled together.
The damaged windshield washer hose has also been replaced with a new one (right).
Finally, the windshield washer is tested at both windshield and rear window. The pump makes its noise again and the washer works fine.
Two hours were lost because of a mouse visit...
The damaged windshield washer hose has also been replaced with a new one (right).
Finally, the windshield washer is tested at both windshield and rear window. The pump makes its noise again and the washer works fine.
Two hours were lost because of a mouse visit...
