Turn Signal not working - fast click (Not a relay problem)

I have been chasing this issue for ever. It's gotten to the point I can't drive the truck anymore. I have tried flasher relays ( 3 of them), and the signal switch behind the steering wheel. For about 2 years I always thought this was my issue, when it got to the point i couldn't drive the truck anymore i replaced it but the symptoms did not change.

The hazards work perfectly which leads me to think its not a bulb issue or hazard switch issue.

Thing on my list to try:
1. I ordered a new hazard switch from a Tacomaworld member im going to swap in and try
2. I am going to wire in halogen bulbs to the front signal that where previously led
3. if all that doesn't work ill replace all the bulbs in the tail light just to be sure

Honestly i dont think any of that is going to work, but short of splitting the wire loom and chasing each wire I dont know what else to check or try. The video below shows the noise im getting.

Skip to 1:05 in the video to hear the noise and skip me talking. The noise only happens when the signal switch is engaged

 

There were LEDs in the turn signal sockets? PO did that mod?

Has this problem been present since you bought the truck?

 

I have owned the truck almost 10 years. I put the leds in. Done right, the sockets are just glued to the turn signal housing. The LED in there now function fine with the hazards. I have also unplugged the front signals and the symptoms are the same, wiring in the halogens to try again this weekend but considering no-change in the symptoms i dont think this will fix my issue.

 

Do you have a tow wiring harness ?

 

Did you do any mods besides just wire up LEDs?

like cchange relays anything

 

Go back to where you belong

 

This is what happens when you try to help.

 

Like Lila asked....

 

No tow harness.

 

LED's do not have enough resistance, and the relay acts like a bulb is burned out. You can wire in resistors to correct this, or order a LED flasher relay.

 

Been there done that. Not my problem unfortunately

 

Did you wire the resister properly? When I first wired mine up I did not look at the directions and wired it in line. You need to wire it between the positive turn signal wire and the ground wire.

 

that not my problem, I'm not using resistors. I have tried led flasher relays and standard bulb relays with no change in symptoms.

 

it is total resistance in the circuit including the ground. I have the wiring diagram for a 98 but not a 97. I will look at it and upload it later today.

 

Is that noise only when switch to left or it is also when switched to the right? If it is correct and hazards work fine it is possible you may have a problem "upstream" of the flasher (hazard switch to 10A turn signal fuse). It may not provide enough current to run bulbs, and then the relay will behave like you hear. So in particular look at that route (marked in yellow):



Keep in mind that hazard lights have different power source from turn signal. Turn signal fuse is powered from the same line as many other circuits like wipers, ECU, radio, cigarette lighter, so of other things work I would suspect bad contacts in turn signal fuse or hazard switch. Could be also bent or burned connector on the either hazard switch and red/black wire between the fuse box and the hazard switch. Or maybe the wire itself is bad. Or hazard switch itself has burned contacts.

 

This is what i'm thinking. I have no idea where to start looking though. Trying to avoid taking everything apart to get to the bottom of this.

 

Take two easy parts first:
1. Pull hazard light switch and inspect the connector - any burned contacts, broken or loose wire. Especially red/black wire. While having turn signal turned on wiggle the switch button and/or plug with wires see if something changes.
2. Look at the fuse box (under driver side). Check 10A turn fuse, if it is OK and seats correctly. I saw you already have the JB/1 out (the box where the the flasher is plugged in). There are few plugs on the back side. One is 2 rows high and 9 rows wide (on my truck it is at the very bottom of the box). At the center bottom row that plug should have red-black wire - this is the other end of the one going to hazard light switch. Check contacts and the wire itself.

 

I looked at both the 96 and 98 wiring diagrams and with a quick glance is appears that there is zero difference between to two, having said that, I doubt that your 97 wiring is any different. I can see where everything goes through the "integration relay" panel and your problem might be inside that. I have included the inner workings plate "J/B No.1 Inner Circuit".

If it was me I would locate the connector BN1 under the drivers seat and with a test light... you want the electrical load, and probe pin 16 with the Green Black (Left turn) wire and see if with the test light additional load the flasher works normally, do the same with the Green Yellow wire (right turn), pin 12.

 

GOLD STAR!

So helpful, i will try this is weekend and report back. Thanks all,