Re: (ET) traced the Hot short to the frame

["SteveS" <ssawtelle fcc net>]

Looking at the schematic, I'm thinking the 'L' contactor must be energized or stuck. You might check for voltage on the actuating coil. If there is none, The contactor may be stuck closed. If there is voltage, then I would suspect something wrong on the control card. Contact '4' on the control card energizes the 'L' contactor coil - there should be no voltage there when the key (or seat switch) is off.

 

SteveS

E12S

 

 

----- Original Message -----

From: William Murphy

To: 

Sent: Thursday, August 15, 2002 8:00 AM

Subject: (ET) traced the Hot short to the frame

E15

Well I found the hot short.   I have the privledge of having a weather cab (with side curtains for winter) and there is a windshield wiper.  Yes, the windshield wiper was shorting out.  why after all this time?  I changed the ground location to a screw on the body of the wiper mechanicals and wala, it works and no short.

But now, when I turn the power disconnect ON,  the motor starts.  with the key off.  The only items I replaced was the power regulator and the reverse relay ( thought the relay could have been a problem) otherwise checking each and every @#%$#&^$ wire and place where it could  chafe.

Tonight when the weather cools, I will put the old relay back, unless someone has an idea as to why power would go to the motor with the key off.  I have made no other changes to the system

thanks

bill from Maine