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Blinking A/C light?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by mkimmer99, Feb 11, 2025.

  1. Feb 11, 2025 at 12:07 PM
    #1
    mkimmer99

    mkimmer99 [OP] Member

    Joined:
    Mar 17, 2021
    Member:
    #359606
    Messages:
    5
    Gender:
    Male
    Vehicle:
    2015 Black Toyota Tacoma
    Cold air intake, 3 inch lift kit
    I have a 2015 Tacoma. I am in NC and lately while running my heat in the typical February cold, I noticed my A/C light blinking on and off between my fan dial and the heat/air dial. The A/C isn't on, but when I push the button 2 times, the light is on then goes off on the second push. Im trying to upload a video, but it isn't working. I took a screenshot of the video with the amber light blinking, then it goes off.

    Is it a warning light? Anyone know what's happening?

    Screenshot_20250211_150634_Gallery.jpg
     
  2. Feb 11, 2025 at 12:15 PM
    #2
    Dm93

    Dm93 Test Don't Guess

    Joined:
    Mar 3, 2015
    Member:
    #150066
    Messages:
    13,365
    Gender:
    Male
    Texas
    Vehicle:
    2014 DC OR 6spd 4x4
    Predator tube steps, Ranch Hand grill guard, Magnaflow CatBack exhaust, Toyota tool box & bed mat, 2LO Module by @Up2NoGood, Rearview Compass/Temp Mirror, Tune by @JustDSM.
    The flashing A/C light is when the A/C amplifier does not detect a speed signal from the compressor lock sensor after commanding the MG CLT relay on.

    Possible causes are:
    Open or shorted wire(s) in the lock sensor circuit
    Bad lock sensor
    Internal problem in the compressor
    Open or shorted wire(s) to the MG CLT relay
    Open in the wire from the MG CLT relay to the compressor
    Failed compressor clutch
    Belt slipping
    Failed A/C amplifier


    Does the A/C Compressor turn on for a few seconds and then turn off when you press the A/C button or does it not turn on at all?
     
  3. Feb 11, 2025 at 12:48 PM
    #3
    mkimmer99

    mkimmer99 [OP] Member

    Joined:
    Mar 17, 2021
    Member:
    #359606
    Messages:
    5
    Gender:
    Male
    Vehicle:
    2015 Black Toyota Tacoma
    Cold air intake, 3 inch lift kit
    I am not hearing the compressor come on at all. I push the button for the light to stay on then push it again to turn it off and stop blinking. I will give it a try again today.
     
    Dm93 likes this.
  4. Feb 11, 2025 at 5:05 PM
    #4
    Dm93

    Dm93 Test Don't Guess

    Joined:
    Mar 3, 2015
    Member:
    #150066
    Messages:
    13,365
    Gender:
    Male
    Texas
    Vehicle:
    2014 DC OR 6spd 4x4
    Predator tube steps, Ranch Hand grill guard, Magnaflow CatBack exhaust, Toyota tool box & bed mat, 2LO Module by @Up2NoGood, Rearview Compass/Temp Mirror, Tune by @JustDSM.
    Do you have a test light?

    If so we should be able to narrow this down pretty quick, test light connected to battery Ground check for power on Pin 2 & 5 of the MG CLT Relay with the key on.
    Then test light connected to battery Positive check Pin 3, it should light up if the wire is continuous to the clutch coil and the coil windings are good.

    If that all tests good then with the light still connected to battery Positive start the truck and have an assistant hit the A/C button while you hold the light on Pin 1 of the MG CLT Relay, it should light up briefly until the light starts flashing.

    [​IMG]
     

    Attached Files:

    Monkeybutt2000 and TnShooter like this.

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