So my right turn signal will not turn on. I push the hazard button and all the right turn signal lights turn on. I push the button on the transmitter to unlock the car and the turn signals work.

What is going on? I checked the voltage from pins 5 (right) of the relay and the ground and turned on the turn signal and it registered around 2.5V. All the bulbs seem to be working when the hazards are on. I even jumped pins 6 with 3 of the relay and checked the turn signal, and all the lights light up along with the indicator.

Why would all the lights work when the hazards on but not the relay when I turn the right turn signal on?

 

If the hazard button still works but not the right turn signal indicator or right turn signal lights, does that mean the turn signal relay is bad?

 

I'm trouble-shooting the combination light switch now. I took off the steering wheel upper plastic cover and took off the 12P connector from the wiper/washer switch. From the disconnected 12P connector, if I don't have continuity from pins 10 and 12, then I'm replacing the switch. I'll input a jumper on the female side ( ) to between pins 10 and 12 with the turn signal on and if it comes on, then the switch is bad. If it doesn't come on, then it might be the MICU, which is built into the under-dash fuse box assembly.

 

Thats the exact thing I was going to suggest.

 

Damn!

Took out the 12P combination light switch connector and tested continuity between pins 10 and 12 with the right switch on and it tested positive, so it's not the switch, which I should have known because it's a mechanical device.

Tested the relay input next. I put the multimeter on pins 5 (from MICU) and 1 (ground) with the relay out and tested the voltage with the ignition ON (II) and the right turn signal on. It tested 3.1V, and it should be ~10V. Trouble-shooting procedures are:

Poor ground (G503 and G601)
Faulty turn signal switch - nope. Checked out above
Faulty under-dash fuse/relay box - possible
An open in the wire - possible
Faulty combination switch control unit - nope. Everything on the combination switch control unit checks out.
Faulty MICU - very possible. Built into the under-dash relay/fuse box unit. Have to check this next.

 

I refuse to believe that the MICU, which is built into the under dash relay box, is only $38.24 below (part 6):

http://www.oemacuraparts.com/parts-c...rol-unit-cabin

I've read on other threads that this went for $200 or so.

 

I took my car to the Honda dealer because of the free diagnostic service that they have instead of Acura charging me, and they could not activate the right turn signal from the Honda Diagnostic Service Tool (HDS). They also plugged in a known good relay and could not activate the right turn signal, which tells me that the problem is the MICU (under dash fuse relay box). I already had ruled out the combination switch control unit and the turn signal switch. I ordered a fuse box and it was $55 (which I'm hoping still includes the MICU as it's not a separate payable item on any Acura parts website). I'll replace the MICU and hopefully that will solve the problem.

 

Got the under-dash fuse/relay box/MICU! I hope this solves my turn signal/blinker problem.

 

So I took out the under-dash relay/fuse box and I put in a new one, and the right turn signal worked!

 

Sorry to bump an older thread but to confirm, part 6 fixed the problem? I've been without a right turn signal for quite some time and finally decided to do something about it. Exact same symptoms as you experienced.

 

I have a 2002 CL with the EXACT same issue. Can you confirm that replacing item #7 from this diagram will fix the issue based on your experience?

http://www.oemacuraparts.com/auto-pa...peed-automatic

Hopefully you can confirm this for me! Thanks in advance!
Steve

 

I'm a terrible person for bumping this thread again but....wow I've gone a long time without my right turn signal working.

Of course the link with the suggested replacement part just redirects to the main page.

Anyone else have a similar issue?

 

pretty much the driver side fusebox for your TL, what year TL?

go to acuraoemparts.com and select your year and model. Go to the electrical/exhaust/heater/fuel category, then the control unit (cabin) and it's the fusebox.

2007/2008: https://www.acuraoemparts.com/v-2007...rol-unit-cabin

 

^ - Awesome. Thank you very much. Not sure why that was difficult on my end. Will report back once it is received/installed.

 

Update

Fuse panel was replaced however it didn't fix the problem. Still have no right turn signal (nothing lights up on the dash/no bulb illumination). When I unlock the car the bulb lights up. Hazard - left signal lights up (bulb and in dash but not for the right). Fuses have been inspected and replaced as I've otherwise probably run out of options. Replaced the bulb as well.

 

Wonder if it's the switch itself not "registering" the turn signal activation and you need to remove the turn signal stalk and replace it.

 

^ - Makes sense to just start swapping out parts at this point. I've ordered another turn signal relay just in case I either bent something when installing...or some other reason. Only $15 to cross that off the list again. Relay gets here next week so the guess and check continues.

 

Do you have access to someone near you with HDS? If you plug HDS into the car you can activate the turn signal via computer and see if your relay is working, or swap relay from one TL to the other. Please save your time and $$$ and lets start at the beginning:

1. Turn signal works with lock/unlock on alarm remote --> Yes/No?
2. What have you replaced? What have you unplugged/replugged?

 

Success after replacing (again) the relay. So...either the last one was bad or the panel was causing a short? I'll go with the latter to justify the replacement cost.

 

To make you feel better, I'm going to go with the panel causing a short too