Hi - I have 1 2008 Acura MDX and suddenly the wipers came on and won't shut off. (Stuck in intermitten mode.) Also the HIGH speed option for the wipers also isn't working - it just stays on standard speed....
they all guess, do you want me to guess, too? surely not.
or test?. we can use a voltmeter to find this.
what we do is look at the schematics at alldata.com
and its all clear. a simple road map;
Sticking on possibles.
the fuses are underhood. fuse 11 and 31
bad motor , internal keep alive cam switch stuck on,
will cause continuous wiper.s
so will motor colored wires green or blue hot full time
will keep motor going full time (any voltmeter, easy check)
12vdc is bad, 0v good (wipers off)
next and last is that wiper relay in hood fuse box, shorted. (pull it out see if they shut off?)
if the relay is good then its input is wrong. the control block.
the combo switch wipers on , sends a CAN buss digital commands to the MICU control block, this i turn powers up the wiper relay.
the MICU has a diagnostic port,and can be tested at the dealer
if the relay coil pins are hot all the time, then the MICU /combo side is failing, if not, the problem is the relay ,if its output is hot all the time.
how is that?
Oct 22, 2013 |
Acura MDX Cars & Trucks