Electrical Problems PS,A/C,RADIO,SPEEDOMETER,SIGNALS,AIR BAG LIGHT ON, ALTERNATOR

[toystory]

Originally Posted by CTScott

OK - I just finished doing some testing on Crashy and could not recreate the issue. I disconnected the alternator output (the large gauge wire going to the battery) and separately the alternator "signal" output (the 4 pin connector that gives the ECM, AC ECU, etc. info about the alternator state). In both cases Crashy started and ran fine, and everything worked (power steering, etc.)

So, based on that and my experience with us having a plant in Humacao, PR for a few years (and seeing things corrode like crazy even indoors), I would look at connector A27, which is the large black connector with a black and a white wire. It connects to the fusible link (the large plastic chunk attached to the positive battery terminal). The white wire supplies power to all of the body ECUs (AC, Power Steering, SRS, etc.)

Attachment 34677



I would also check the other end of that white wire, which is a ring terminal (connector 1D), which is located on the bottom of the under hood fuse panel.

YOU WERE RIGHT CTSCOTT!!!!!!
I TOOK OFF THE PLUG WITH THE BLACK AND WHITE WIRE WHERE YOU SHOWED IN THE PICTURE, AND SOMEBODY HAD DONE SOMETHING BEFORE, (CAR WAS BOUGHT USED), THEY PUT THE WIRES BENDED INTO THE PLUG TO MAKE CONTACT.... SO I TOOK EVERYTHING APART OF WHAT WAS DONE BEFORE, AND WITH A PLIER I TIED UP THE CONTACTS AND SQUEEZED IT DOWN AND LEFT EVERYTHING HOW ITS SUPPOSED TO GO, SO I TURNED THE YARIS ON AND EVERYTHING IS WORKING PERFECTLY WELL, THANKS SO MUCH! I'M GONNA DRIVE IT AND IF ANYTHING ELSE POPS UP I'LL WRITE IT HERE, HOPEFULLY NOT!!!!!!