Question about 1993 Toyota Camry V6
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Posted on Jan 02, 2017
SOURCE: 96 gand cherokee
Sounds like a body control module --in most newer cars there is a ecm for the elctronics for the motor and a bcm for all the interior dudadds --Check EVERY fuse in the truck and out under the hood -- look up the wire color codes for the ecm harness --check the power wire going to the ecm for 12v --or jump a wire off the batt + to that wire to feed it.try to locate all the grounds also--if need be google it --Like my ls1 trans am has a ton of ground wires --but there are 2 on the back of the head--if they are loose it will not run even tho all the other grounds under the hood are tight.I think they do that to isolate the ecm from ground back feeds or cross wireing when jump starting.
Posted on Jul 30, 2008
Check for a burned fusible link under the hood. If you have power at the fuel pump relay, you could have a bad ignition switch or bad oil pressure switch...accordianman
Posted on Dec 15, 2008
I checked all of the fuseable links and they were all good. Next I decided to check all the power wires to the ECM and also the grounds from a wiring diagram because the Mil is controlled by the ecm and the bulb was good. The ecm is located behind the glove box. Bingo, the orange wire was only reading 3-5 volts at the ECM, but 12.5 volts after the fuseable link at the underhood fuse block (passenger side firewall). I ran a temp wire directly from after the fuseable link to the orange wire at the ecm and the ecm turned back on and the Mil or "check engine soon" light came on too. The truck started up and has never run smoother.
Note that at first the truck just stalled out and I could restart it right away with no error codes. Eventually the stalling became more frequent with longer reset times required. Once it threw a "code 54" and I thought it was fuel related as each time the gas stopped and I could still start the truck with gas poured into the TB. Ignition ok. My fuel pump turned on and ran if I tested it. I even checked the pressure regulator and the fuel filter to no avail.The orange wire that powers up the ecm is technically part or the fuel pump relay circuit as it also feeds the fuel pump relay 12.5 volts all the time. The thin orange wire from the fuse block is joined to two other thin orange wires in the large group of wires that heads to the ecm along the firewall behind the engine. I had to dig it out of the many wires to find it and remove a lot of tape. It is amazing to me that this one little orange wire could cause so much grief and be so hard to track down. I could not have afforded to take this problem to the Dealer.
Posted on Mar 26, 2009
SOURCE: no power to fuel pump
I had a problem with my 92 accord not starting. Had gas and was turning over but not starting. The problem I had only occurred when it was hot outside (95+degrees). I had it looked at by a friend and he said it was the fuel pump. Putting our own fuel mix into the engine directly started the car sothere was nothing wrong with the engine.
Turns out that there is a relay in the dash of the car that turns on the fuel pump. When it goes bad the pump fails to kick in. In my case it was getting bad the hot weather pushed it over the edge.
Once identified it cost about $30 and about 1/2 hour to replace.
Posted on Sep 16, 2009
Theres a few more checks But i'm sure you checked the fuel pump fuse already ..Use a test light and check to see if the fuel pump relay is getting power from the supply and from the Ignition feed. should be a schematic on the underside of the relay..if no power from the feeds check for a blown or rotted fuseable link or a maxi fuse..good luck
Posted on Jan 27, 2010
Testimonial: "Thanks alot will try this on Thursday. You have educated me on these items again thanks a lot for pointing me in a new direction.Will let you know "
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