07-15-2018, 01:23 PM
back to basics here. isolation and volt meters
your coach i assume has two 12v surflo pumps.
there should be 12v all the time at the pump itself. there will be a rocker switch in the galley that switches between pumps.
take your voltmeter and check for voltage at the plug that connects to the pump. if no 12v, then check the other pump.
if you have voltage at either pump, then there is something wrong with the pump. un likely both 12v pumps go bad.
if no 12v at either pump, then check for voltage at the 12v fuse block where you checked the fuse. just break it all into small chunks working backwards.
pretty simple for 12v. either no ground, no 12v, bad pump or bad switch.
tom
your coach i assume has two 12v surflo pumps.
there should be 12v all the time at the pump itself. there will be a rocker switch in the galley that switches between pumps.
take your voltmeter and check for voltage at the plug that connects to the pump. if no 12v, then check the other pump.
if you have voltage at either pump, then there is something wrong with the pump. un likely both 12v pumps go bad.
if no 12v at either pump, then check for voltage at the 12v fuse block where you checked the fuse. just break it all into small chunks working backwards.
pretty simple for 12v. either no ground, no 12v, bad pump or bad switch.
tom
2014 Haulmark 40' Super C on Freightliner Cascadia ISX15 Easton 13 speed
Former Owner 1990 38' Newell Coach 236 8V92
Former Owner 1999 45'8" Newell Coach 526 Series 60
Former Owner 2002 45'8" Newell Coach 608 Series 60