no power to anything - battery charged (solved)

[rkymtnflyfisher]

Remember, your digital multimeter DMM, reads the difference in potential (voltage).

So from your positive battery post to the fusible link should not have any difference in potential, should be basically 0.0v.

As it is a + wire in the circuit correct?



Unless that circuit is open, then you could be reading the 12v from the positive post on the battery to the fusible link via a grounded wire, or device somewhere.

 

[Kschep]

Yes jump it right to the big terminal on the starter, make sure your in neutral and away from the fan!

so I tried that and nothing - maybe i did it incorrectly? take a look at the pics and tell me if i did it correctly...the jump that is…I thought someone said the 50 terminal (maybe I’m tripping and they said jump from 30 terminal to ign coil output… anyways

So when I got nothing I switched the jump to the other output (to ign coil) and yes sparks and clicking - NO engine turn whatsoever though. Full battery - 12.14 volts

Hard to see in this pic but I uncovered the sensor and have the sensor/prong clipped together (it’s hard to see bec of angle)

 

[Kschep]

Let's talk about this.


Is this voltage from the positive post in the battery to bare copper at the fusible link?

This is voltage with positive prong on meter touching end of fusible link plug - and the negative prong on a good ground

 

[Kschep]

Remember, your digital multimeter DMM, reads the difference in potential (voltage).

So from your positive battery post to the fusible link should not have any difference in potential, should be basically 0.0v.

As it is a + wire in the circuit correct?



Unless that circuit is open, then you could be reading the 12v from the positive post on the battery to the fusible link via a grounded wire, or device somewhere.

 

[rkymtnflyfisher]

This is voltage with positive prong on meter touching end of fusible link plug - and the negative prong on a good ground

Sweet, that make more sense now!

 

[RockDoc]

What resting voltage reading do you get from a known good battery with that multimeter? Your readings are too low for a fully charged battery...... unless the meter is reading wrong.

 

[rkymtnflyfisher]

-Fuse Block - 8 fuse positions - 4 of 8 have 0.00 Volt reading - (with key-on position)
top 3 fuses - 8.5 volts, 8.5volts, 7.9-8.3volts. - depending on how the prong is touching the surface it wants to jump around (i should just
clip it)
Middle 4 fuses - All 0.00 volt readings
Last botom fuse (headlamp) - jumps between 6.3-7.2 volts (again depending on the prong and holding it against fuse clip

So if all of these are fed from the positive wire going through the fusible link, somewhere between the FL and the fuse block there is an issue.

Some of those go through the ignition switch I believe.

I'd start inspecting the wire harness from the point that it enters the firewall, all the way behind the dash to the fuse block. There's a big plastic connector back there behind the gauge panel if I remember correctly.

 

[73FJ40]

ok readings abound...

just to start it seems EVERYTHING stops at the starter solenoid output post - voltage going in = 12.18 ; voltage coming out (to ign coil) 0.00

but numbers wise voltage readings....from the beginning
-battery + reading after full charge according to my charger = 12.18 volts
-Battery - ground reading - same 12.18 volts (so good ground there)
-from Battery + to NEW fusible link - 12.18
-from battery ground to ampmeter - full 11.9 and 12-something readings (both on the neg post and positive post on ampmeter) - but depending on where i help it it gave full or little below (post vs actual ring connection to post)
-From battery to starter (with new Well grounded position on frame) 12.18
-*****from starter to ignition coil - 0.00 !!! ****
-Fuse Block - 8 fuse positions - 4 of 8 have 0.00 Volt reading - (with key-on position)
top 3 fuses - 8.5 volts, 8.5volts, 7.9-8.3volts. - depending on how the prong is touching the surface it wants to jump around (i should just
clip it)
Middle 4 fuses - All 0.00 volt readings
Last botom fuse (headlamp) - jumps between 6.3-7.2 volts (again depending on the prong and holding it against fuse clip


SOOOO, theres the numbers ..... I think it has everything to do with my Starter solenoid or starter as a whole.

NEXT - jump the starter post and see if engine will turn...be back with that answer shortly

Why are you surprised ("***from starter to ignition coil - 0.00 !!! ") there is no power from the starter to ignition coil?

Did you energize the solenoid and hold it there when you checked the wire on the solenoid for the ignition coil?

 

[firefighterjed]

Why are you surprised ("***from starter to ignition coil - 0.00 !!! ") there is no power from the starter to ignition coil?

Did you energize the solenoid and hold it there when you checked the wire on the solenoid for the ignition coil?

You need to re-explain what happens when you jumper the starter, and why you’re asking him to do it, and what it will tell him. (The big picture is not in focus for the OP). He’s learning

 

[73FJ40]

You need to re-explain what happens when you jumper the starter, and why you’re asking him to do it, and what it will tell him. (The big picture is not in focus for the OP). He’s learning

Dear Kyle,

firefighterjed suggests you should read post #53 and ask any questions if you don't understand what was posted there.

 

[firefighterjed]

Dear Kyle,

firefighterjed suggests you should read post #53 and ask any questions if you don't understand what was posted there.

Lol. Touché.

 

[Shark56]

As a slight ad-on. My wife's RAV4 had a slow start sometimes or no start sometimes. I checked battery and had over 12 volts. I ended up taking it to a local battery shop and upon load test it would drop to about 9 volts. Bad cell on a two year old battery.
As others have said. It might be worth getting that battery load tested.
I will say on hers, when it wouldn't start, the radio and DRL would come on but would shut off as soon as the ignition switch was turned. New battery and all was well.

 

[WarDamnEagle]

Still think it's the battery. Don't know why you don't at least try the jumper cables. At least then you can tell me I'm wrong. Should have been the first thing you tried given how easy it is.

 

[whitey45]

Agree, voltage is too low! Cant tell if you jumped power to the solenoid? If it didnt turn over, its because your battery is bad!!!!

 

[Kschep]

This. Still not sure why you wouldn't at least try to jump it with another battery? That has got to be the simplest thing you could do. Sometimes these Optima batteries show ~12v under no load but have an internal short that manifests under load and you get 0v - like when you turn on your lights. I could be completely wrong but I'm going with the battery at his point.

ok guys, no, its not the battery - lets get off that...i understand the hate on the optima's , but i DID jump from my brand bew '21 tacoma and nothing .. also i was using my battery charger that i plug into an outlet and it can: boost it for "engine start" , or maintain, or just plain charge. charged it full and it hasnt dropped a single volt since considering i take off the main battery cable leads off everytime im donetesting whatnot for the day.

 

[Kschep]

my god ill go buy a damn new battery tmrw - what kind ? - and then ill pop it in and I guarentee nothing...but im willing to try it because everyone seems to think its the battery. but the damn thing holds charge is 3 months old and hasnt been abused at all meaning dead/charge/dead/charge/dead/charge...

 

[Kschep]

Still think it's the battery. Don't know why you don't at least try the jumper cables. At least then you can tell me I'm wrong. Should have been the first thing you tried given how easy it is.

i did multiple times and it is the first thing i did

 

[Kschep]

Let's talk about this.


Is this voltage from the positive post in the battery to bare copper at the fusible link?

yes

 

[WarDamnEagle]

You don't have to buy another battery. If you want to absolutely eliminate the battery as an issue then remove the leads from your Odyssey, connect your jumper cables to them (make sure the positive isn't touching a ground) and connect that to your Tacoma.

Edit: I'm not an Odyssey hater; I have owned more than one. But AGM batteries do funny things sometimes.

 

[Kschep]

guys im doing my best here with what little knowledge i have...please be patient with me

Agree, voltage is too low! Cant tell if you jumped power to the solenoid? If it didnt turn over, its because your battery is bad!!!!

did you see the picture i posted of how i jumped it (post 82 pictures) - because i added that so someone could say hey you did that incorrectly?