Toyota 7FGCU25:
no cranking

no cranking from key in start position, key switch good.
nuetral switch good. have positive voltage at starter relay.
but
there is positive voltage on both sides of starter relay coil at start position of keyswitch, no negative.
  • Posted 25 Sep 2014 01:58
  • Discussion started by dcas
  • Texas, United States
thanks for helping,
d.cas
Showing items 1 - 8 of 8 results.
just had same issue...12volts to ignition fuse, and 12v power to starter relay... but no power to the starter cable going to starter... it ended up being the relay underneath the fuse box.. i tapped it with a hammer to loosen stuck contactors and it kicked on right away.. so it ended up being the relay below the fuse box
  • Posted 19 Jul 2022 05:39
  • Reply by mike_wood
  • Texas, United States
mw
I have the same problem. I can't seem to find a wiring diagram that show the control module. My diagram only shows the starter relay and the negative wire going to the frame. On my truck starter relay command negative wire split into two wires, one wire goes to module located behind the left foot step cover and the other wire goes to another relay with a white and black wire located on the side of the fuse relay box. What is the purpose of the control module and can any you send me a wiring diagram that shows that module in the diagram.
7FGCU25-92335
  • Posted 27 Sep 2019 08:42
  • Reply by altustech
  • New Jersey, United States
Alex P
Hello dcas, did you ever resolve your problem?
  • Posted 23 Feb 2018 05:23
  • Reply by ForkFixxer
  • California, United States
I fix beater forklifts because I have to
just pull the starter off
pull truck to junk yard
push new truck in and install starter
fixed!
heheh

.....................

just kiddin :o)
check that module, replace if necessary
  • Posted 26 Sep 2014 02:28
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
As prentice said I would then check the ground circuit for the relays.
  • Posted 26 Sep 2014 00:35
  • Reply by bbforks
  • Pennsylvania, United States
bbforks (at) Hotmail (dot) com
Customers love technology- until they have to pay to fix it!
Thanks for the input,
its not the starter, cranks fine when manually pushing in contacts on start relay,
found no negative to start relay from module(left foot well)
  • Posted 26 Sep 2014 00:12
  • Reply by dcas
  • Texas, United States
Run a jumper from the positive battery connection on the starter to the start terminal on the starter- the starter should energize & spin the engine over- if not then the starter is faulty.

If it does turn the engine over then there's a power issue to the start terminal on the starter- check to see what voltage is available to the start terminal when attempting to crank the engine using the key. I've had to install an auxiliary starter relay in many Toyotas due to a loss of voltage in the starter circuit
  • Posted 26 Sep 2014 00:08
  • Reply by bbforks
  • Pennsylvania, United States
bbforks (at) Hotmail (dot) com
Customers love technology- until they have to pay to fix it!
Hello. We have seen bad relays under the Fuse box/left floorboard. Bad ground wires ( remove clean frame/wire) or bad starter
  • Posted 25 Sep 2014 06:25
  • Reply by Prentice
  • Ontario, Canada

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