Help! I have an X250 ducato and the screen washers stopped working, so armed with the eLearn programme, handbook and a multimeter I set to work on the problem.
Symptoms; When stalk pulled towards wheel the wipers come on for their wash routine (4 wipes followed a few moments later by a final one) but no screen wash.
I know the 'high power' side of the circuit works, if I partially unplug the relay just enough to connect the two large terminals to complete the circuit it works no problem. The relay also works as I swapped it with some of the others of the same type in the fuse box. What confuses me is that the relay receives a 12v supply from both low power circuit terminals, presumably it should only be one. The functional description suggests that the body computer energises the coil by a negative analog signal (I guess it provides an earth?) to the low power side of the system. Does this mean the body computer is not working or could there still be wiring issues (I assume continuity of wiring to the computer due to the 12v on the both terminals of low power side of relay).
Not sure what my next step from here is....I have attached the full wiper electrical system info from elearn in a PDF for your reference. Very frustrating.:bang: Cheers for any help in advance.
Symptoms; When stalk pulled towards wheel the wipers come on for their wash routine (4 wipes followed a few moments later by a final one) but no screen wash.
I know the 'high power' side of the circuit works, if I partially unplug the relay just enough to connect the two large terminals to complete the circuit it works no problem. The relay also works as I swapped it with some of the others of the same type in the fuse box. What confuses me is that the relay receives a 12v supply from both low power circuit terminals, presumably it should only be one. The functional description suggests that the body computer energises the coil by a negative analog signal (I guess it provides an earth?) to the low power side of the system. Does this mean the body computer is not working or could there still be wiring issues (I assume continuity of wiring to the computer due to the 12v on the both terminals of low power side of relay).
Not sure what my next step from here is....I have attached the full wiper electrical system info from elearn in a PDF for your reference. Very frustrating.:bang: Cheers for any help in advance.