1990 4runner insufficient voltage to starter solenoid.
A hotwire to the solenoid itself works fine.
A hotwire to the output (pin 2) of the starter relay works fine.
I've read of supplying better power to pin 4 but can't figure how to get the fuse block out to access pin 4 and it's wire.
Any easy fixes here?
Where is the best place to tap into the pin 4 wire?
Thanks

 

On my truck ('94), pin 2 of the starter relay is ground, and there is no pin 4.
http://web.archive.org/web/201102051.../2starterr.pdf
The starter solenoid connects to pin 3. Connecting 12v to that pin is my favorite way to connect a remote starter.


But pin numbers aside, it looks like you've narrowed it to the relay (or maybe its socket). The test for the relay is linked above.

 

Captainado, You got schematic for your truck? It would be nice if you could share it and a picture of your starter relay to help us all understand this wiring issue with the earlier trucks.

Yes, most likely the wiring to supply side of relay contact is wired wrong like many other model-years.

Yes again, as far as I know, 1990 and later 22RE's have no Pin4. Schematic is below. It shows proper wiring but who knows. There are so many wiring variations out there; I think between 1988 and 1995 the wiring depended on how much sake the assembler drank the night before - LOL!

Supply side of relay contact should be Pin5 with white wire going to it (earlier 22R-E's have black wire going to pin 4 . VERIFY FIRST. IF wired correctly according to schematic below, there should be 12V there regardless of ignition switch position. IF wired wrong, just snip that white wire behind the relay block, leaving enough length to connect a wire from it, to a fuse and directly to battery positive.

CAVEAT:
I RECENTLY REALIZED THAT WHEN THE STARTER RELAY IS WIRED CORRECTLY ACCORDING TO SCHEMATIC, IN THE UNLIKELY* EVENT THAT THE STARTER RELAY CONTACTS CLOSE* OR SHORT* FOR SOME REASON STARTER WILL CRANK EVEN WITHOUT IGNITION SWITCH BEING TURNED ON. IF PARKED IN FIRST GEAR, TRUCK MAY MOVE AND CAUSE AN ACCIDENT. A KILL SWITCH IN SERIES WITH THE RELAY CONTACT PIN IS HIGHLY-RECOMMENDED.
LIKE THIS. JUST KEEP WIRE RUN TO MINIMUM.



*DOES ANYBODY HAVE ANY STATISTICS ON PROBABILITY OF STARTER RELAY CONTACTS SHORTING WHILE PARKED AND IGNITION IS OFF?

 

Anything is possible when dealing with electro mechanical devices.

Your dealing with having to over come the spring tension holding them open.

to have the contacts close to engage the starter you would need an original relay where things are really tired.

Or the smash with hammer approach to relay trouble shooting physical damage to the relay .

If you think about this most relays and contactors one side of the contact is always at system voltage .

I see the contacts fusing closed from all sorts of interesting things

the amount of relays in the world I think winning Powerball has better odds.

 

Like this? LOL

 

Whenever there is an evidence bag there is usually a guilty party. Personally I like the "Louisville Slugger" approach to electronic component testing.

 

Well then I have to say it again, cats outta the bag................

 

Good thing they're wearing sunglasses so no one will recognize them.