hazards work, blinkers don't, if the hazard is held just before they engage..

[willbgood]

So, I replaced my bumper and mounted led flashers. Before I installed the EP35 flasher, the blinkers ceased working. I checked the wiring and played around with the switches. What I discovered is that if I hold the hazard flasher switch to just before it engages the flashers, the blinkers will work.

It is not the blinker fluid.

My assumption is that the hazard switch is either shot or need cleaned and some dielectric grease.

If it is not that then I am guessing the turn signal stalk switch.

Anyone have the same thing happen?

If it is the harzard, I assume I have to take the center dash off, unless someone has a trick to do it another way.

As well, if it is the stalk, do I have to pull the stearing wheel to get to it or does anyone have a trick to getting the screws out of the column trim plastic?

 

[Mandelbaum]

I can't confirm the problem for you but I can tell you that if the hazard switch doesn't form a complete circuit, the turn signals won't work. So if your hazard switch is bad or beat up, it could be disabling the turn signals until you push the button down and form a solid connection.

Not really sure how the switch works. If you really wanted to know, you might be able to complete the connection for the hazard light button with gator clips and then see if the blinkers light up.

 

[willbgood]

I can't confirm the problem for you but I can tell you that if the hazard switch doesn't form a complete circuit, the turn signals won't work. So if your hazard switch is bad or beat up, it could be disabling the turn signals until you push the button down and form a solid connection.

Not really sure how the switch works. If you really wanted to know, you might be able to complete the connection for the hazard light button with gator clips and then see if the blinkers light up.

That is what I think from the reading the FSM as well, that That the hazards are either on or off, and when off the hazard switch provides powers the turn the signals...at least I thinketh...

 

[TheDurk]

That is what I think from the reading the FSM as well, that That the hazards are either on or off, and when off the hazard switch provides powers the turn the signals...at least I thinketh...

Yeah, the Hazard switch cuts the TURN power and takes over the flasher circuit when it goes to on.

Uhh, you did check the 10A TURN fuse, right? Because the Hazard circuit runs off a different fuse. Try a known good fuse from a different circuit, as just looking can be deceptive.

If for sure that fuse is good, check for power at the #2 pin of the flash relay (green-red wire) with a test light (Hazard switch OFF). If no juice, then time for a new Hazard switch.

http://tacoma.site40.net/4Runner_96-02_Repair&Wiring/techinfo.toyota.com/ileaf/ewdtmc2/ewdtmpdf/ewdsourc/2002/024runne/systemci/022tshwl.pdf

 

[willbgood]

Yeah, the Hazard switch cuts the TURN power and takes over the flasher circuit when it goes to on.

Uhh, you did check the 10A TURN fuse, right? Because the Hazard circuit runs off a different fuse. Try a known good fuse from a different circuit, as just looking can be deceptive.

If for sure that fuse is good, check for power at the #2 pin of the flash relay (green-red wire) with a test light (Hazard switch OFF). If no juice, then time for a new Hazard switch.

QUOTE]
Fuse is goo, will check the #2 pin green-red wire in am. I am leaning towards a bad hazard switch, which is a bummer because I just completed reassembling the interior...

Thanks for the PDF in color as well!

 

[TheDurk]

Yeah, the Hazard switch cuts the TURN power and takes over the flasher circuit when it goes to on.

Uhh, you did check the 10A TURN fuse, right? Because the Hazard circuit runs off a different fuse. Try a known good fuse from a different circuit, as just looking can be deceptive.

If for sure that fuse is good, check for power at the #2 pin of the flash relay (green-red wire) with a test light (Hazard switch OFF). If no juice, then time for a new Hazard switch.

QUOTE]
Fuse is goo, will check the #2 pin green-red wire in am. I am leaning towards a bad hazard switch, which is a bummer because I just completed reassembling the interior...

Thanks for the PDF in color as well!

The key needs to be Ignition On for the TURN circuit to power up. Since you just had things apart, make sure that Hazard Switch plug is fully seated. I'd also confirm you have power to the Red-Black going TO the Hazard Switch before condemning the switch. They don't go bad that often so I'm really trying to rule out everything else.

 

[willbgood]

The key needs to be Ignition On for the TURN circuit to power up. Since you just had things apart, make sure that Hazard Switch plug is fully seated. I'd also confirm you have power to the Red-Black going TO the Hazard Switch before condemning the switch. They don't go bad that often so I'm really trying to rule out everything else.

I got this and I will trouble shoot and isolate the problem before replacing anything. I hate mystery fixes...

The logical mover here is to verify the hazard switch circuit before I tear into to column.