09 tacoma no power to starter relay

Hello im new. I need help. Please. A friend of mine fox my flywheel. Now does not crank. No power to starter relay. It starts if i bypass relay. Switch has power at relay also ground.

Bypass relay starter cranks. Where do I start checking. Thank you very much

its an automatic transmission

 

Park neutral switch isnt plugged in, its on the shift linkage on the side of the transmission.

 

The mecanic made me order a new one. He installed it and same issue. It started before he swapped flywheel. Thank u

 

Then if the 7.5a Sta Fuse is good, you have a wiring issue. I would simply bypass the safety switch for now until you can figure it out.

 

There are 2 different power wires to the Sta Realy.
Does either one have power while cranking.
Also, have you check the 7.5A STA fuse?

 

You could also unplug the Safety Switch.
You should have power to the Purple wire while trying to crank the truck.

 

Here is what I’d do.

First make sure the Switch is Adjusted Correctly.
https://www.tacomaworld.com/threads/transmission-range-sensor.668887/#post-23473593

Then Proceed

1. While the key is in crank position, see if there is power to the 7.5A STA Fuse.
If there is, move to the Safety Switch. Check the Purple wire for power while cranking.
This is the wire that connects to Pin #4 when plugged in.
If there is power to it, then check the switch.

The switch should have continuity between pins #5 and #4 with the shifter in P or N.
Power goes into pin#4 and out pin #5 through the yellow wire to the relay.

 

Thanks a lot. Ill check out all these great leads. Blessings for all the knowledge

 

Welcome to TacomaWorld

 

Ok. Purple wire has power to sta 7.5 to neutral switch This wire has no power does anybody know what color of wire and where is coming from thank u

 

Well narrow it down. No power from this cable from neutral switch to fuse box. Purple wire has power feeding the nuetral switch

 

That should be the Black/Yellow wire coming from the Safety Switch.

Pins #5 and #1 should have power when cranking.
#5 is powered by the Ignition Switch. It gets power from the 30AM2 Fuse.
#1 is powered by the 7.5A STA fuse. But it HAS TO GOT THROUGH THE SAFETY SWITCH FIRST.

At this point you have a Bad Safety Switch or Bad wiring, or an improperly adjusted Safety Switch.

 

Thank you tacomaworld for all the leads. After the leads i received . I found the black/yellow wire coming from neutral switch to Starter relay #1 slot got broken when they removed or installed the transmission. Somehow they forgot to disconnect the harness. Thats what happened. Thanks to all that help out.

 

Welcome to TW!