Hi all, Got a problem with my front & rear screen washer/pump. I’ve checked the contact in the squib, seems good, I’ve replaced the pump with brand new OE, checked the fuse and I definitely have power going to my light washer pump. The issue has been intermittent over the last few months, sometimes it works, sometimes it doesn’t. I wonder if it might be a broken wire……? As now it has stopped working completely. If so, where if anywhere should I be looking to trace the fault further please?
Schematic attached for reference - 645 is PASSENGER COMPARTMENT COMPUTER (UCH?) and 1519 is UNDER STEERING WHEEL CONTROLS The 16Amp wire is for front windscreen pump rotation direction The 24 A is for rear ... direction Suggest if no noise from the pump, its likely the motor or wiring - possibly broken earth wire, or as you say connector etc Connector R107 is shown on attached along with NAA earth point - not sure if exactly your model/radio/sat-nav etc but I expect it to be similar Good luck I've also attached an extract from a post in 2019 re Clio below explaining how the bi-direction pump system works. "The action of the pumps is novel. Both pumps are the same The two outlets feed via a shuttle valve which operates inside the pump body, the valve switching depends on the direction of the pump motor, forward for one outlet - reverse for the other, the motor is controlled by polarity reversal. The first pump is used for the windscreen and rear screen, depending on direction the motor is switched. The second pump is used for the headlight wash action, this action occurs only once each time it is operated, it pulses first in a forward and then immediately in reverse direction, thus feeding both outlets in turn, each pulse lasts about a second or so. The headlight wash only works when the headlights are switched on It's quite common for the shuttle valve to fail in these pumps, especially on aftermarket pumps. However If the pumps are not 'heard' running then this is likely an electrical fault, e.g. fuses or connector."
Hi Zoto, Thanks for your comprehensive response to the issue, hopefully it’s not as in depth as the wire from the squib to the fuse box, but I’ve already managed to source a new supply wire from washer bottle pump to fuse box so this will help me identify the cause of the issue + I’ve also got a replacement squib to take that element out of the equation. Hopefully, either or this will identify the problem…….?
