Hi guys
Have a W212 which the front wipers and screen wash don't work on.
Car has two error codes which are for communication to wiper motor and to rain sensor.
Wash can be operated through diagnostic machine, no test for wipers unfortunately.
Wiper motor has three wires which appear to be 12v permanent feed, earth and one more wire which I guess is signal but nothing shows on scope when attempting to operate so maybe this is for something else or no signal is being sent?
Tried looking on WIS but diagrams that I can find are not very helpful though I'm no expert with the system.
Bonnet switch appears ok, dash shows bonnet open and closed as it should.
Took a stab and changed column controls with a known good unit but no difference.
Anyone have any bright ideas or better diagrams please?
Thanks in advance
Ezi
Have a W212 which the front wipers and screen wash don't work on.
Car has two error codes which are for communication to wiper motor and to rain sensor.
Wash can be operated through diagnostic machine, no test for wipers unfortunately.
Wiper motor has three wires which appear to be 12v permanent feed, earth and one more wire which I guess is signal but nothing shows on scope when attempting to operate so maybe this is for something else or no signal is being sent?
Tried looking on WIS but diagrams that I can find are not very helpful though I'm no expert with the system.
Bonnet switch appears ok, dash shows bonnet open and closed as it should.
Took a stab and changed column controls with a known good unit but no difference.
Anyone have any bright ideas or better diagrams please?
Thanks in advance
Ezi