1. Welcome to Tundras.com!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tundra discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other Tundra owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

2013 Tundra, no function from ac actuators. Replaced driver side servo assembly, still nothing

Discussion in '2nd Gen Tundras (2007-2013)' started by Anakin, Oct 8, 2021.

  1. Oct 8, 2021 at 8:57 PM

    Anakin [OP] New Member

    Oct 8, 2021
    Hello, im hopeing someone has some insight on what could be the problem. Originally the truck came in and had no function with any of the dash controls, hot/cold all the modes were dead. It was stuck on medium temp face only.

    I replaced the entire servo assembly with both actuators on the driver side, everything was timed accordingly and still no difference. Pn:

    On my scanner, i can see the values change when switching the modes and the temperature so i know the computer is reading the signal from the dash knobs and trying to respond.

    It does however have a code that when i clear it, comes back immediately for a communication error in the bus network for the ac system and supposedly there is a fault in either the ac system wiring harness or the ac amplifier is shot.

    Has anyone had this problem or know if replacing the ac amplifier is the likliest culprit? I looked at the wiring inside the cab and nothing sticks out to me which makes me think the amplifier is the culprit. Thanks in advace to anyone willing to give me some insight. I will post the trouble code tomorrow for reference.
    Last edited: Oct 8, 2021
  2. Oct 9, 2021 at 4:37 AM

    toyofan87 Beer thirty

    Mar 8, 2020
    First Name:
    Gettysburg, Penna
    80- Longbed/87-4Runner/08-Sr5 Tundra
    Toytec 2.0 Aluma 3/1.5 lift with JBA's UCA Falkens AT3 295/70/18
    Official welcome.
  3. Oct 9, 2021 at 10:15 AM

    audiowize New Member

    Dec 11, 2020
    First Name:
    Paul B.
    2008 Tundra SR-5 4x4 5.7
    It's probably worth trying a used AC amp to see if the code persists.

    If it's not the AC amp, you're going to have to chase wires and look for rub throughs or breaks, which is a total PITA.
  4. Oct 11, 2021 at 12:50 AM

    NueveTundra Internet Certified Forum Mechanic

    May 24, 2020
    Planet Earth
    07, Black Tundra SR5 CrewMax
    Exterior: Toytec ultimate 3" lift level , GoodYear helper air bags , DayStar air bag cradles, AcanII smoked headlights, AcanII smoke Tail lights (2.5 gen style), DV8 front winch bumper , Badlands 12k winch , White AUTMATCH Shackles 3/4" D Ring Shackle, White AutoBots winch hook, Trail Ridge mirrors , 20x9 Creeps rims , 33x12.50r20 RoadOnes , Black Hart cross drilled n slotted rotors , Rigid flood flush mounts rear bumper , WeatherTec rain guards , OEM black side badges , Rigid Amber Radiance Pods. Energy Suspension Red Rack and Pinion Bushings, EAG front mesh Grille, RCI HighLift bed mounts. Rough Country DS2 Steps, A.R.E OverLand Canopy with Ascend basket, Stickers: ToyTec lifts windshield banner, Red Strange Music window sticker(back cab), White Strange Music sticker(back canopy), White Rigid sticker x2 (canopy sides), white Official BigFoot Research Team (Back Canopy) Interior: Alpine double din touch iLX-650 , JL C5-653's (front) JL C1-650x (rear) , JL JX400 4 channel amp , JL JX500 mono amp , 2 JL 12" subs , WeatherTec floor mats, Kenwood F/R Dash Cams, Under the Hood: Koyo all aluminum radiator, Mishimoto red silicon hoses , XS Power 3000 amp battery , LAlectric 300 amp Alternator , K&N replacement filter. Online LED store accessories Fuse/relay box. unknown Cat-Back exhaust.
    Put a scope on it and find the issue. That would be the best bet.

Products Discussed in

To Top