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HVAC Schematic 2006 Tacoma sr5

Discussion in 'Technical Chat' started by Tacoandburritos, Jun 25, 2025.

  1. Jun 25, 2025 at 9:01 PM
    #1
    Tacoandburritos

    Tacoandburritos [OP] Member

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    Looking for the break down schematic for the hvac system for a 2006 tacoma sr5 pre runner. Thanks in advance.
     
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  2. Jun 25, 2025 at 9:02 PM
    #2
    Dm93

    Dm93 Test Don't Guess

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    You talking about a wiring diagram or component locations?
     
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  3. Jun 26, 2025 at 3:30 AM
    #3
    Tacoandburritos

    Tacoandburritos [OP] Member

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    Apologies for being vague on the initial post. Both wiring and components, thanks.
     
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  4. Jun 26, 2025 at 11:50 AM
    #4
    Dm93

    Dm93 Test Don't Guess

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    Here you go, What kid of issue are you chasing?
     

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  5. Jun 28, 2025 at 10:54 AM
    #5
    Tacoandburritos

    Tacoandburritos [OP] Member

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    The a/c only worked on highspeed for a little bit. The fan motor sounded like it wss struggeling. Then the baklighting went out and nothing worked. I've had to put this issue on hold for awhile as I got everything together for the transmission rebuild im about to do. Kinda odd thing happened when I replaced the battery. I went with the 24f size group with 750 cca. The original had 600 cca. But when I started the truck I noticed the backlighting was back on and everything was back on and working fine. Though after awhile the blower motor started struggling again. Im not certain if the stronger battery had an affect on the system coming back online. But im planing on replacing that motor and the resistor.is there anything else I should be looking at/for when I have it apart?
     
  6. Jun 28, 2025 at 11:01 AM
    #6
    Dm93

    Dm93 Test Don't Guess

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    Sounds like either you have a voltage drop to the blower motor or the motor itself is failing.
    The backlighting is a separate circuit from the A/C system, is only the backlighting in the HVAC controls not woring?

    Easy enough to backprobe the blower connector and check voltage across the terminals with it on high, should be within 1v of battery voltage.

    Also check for burnt pins.

    https://www.tacomaworld.com/threads/2nd-gen-information-diagnostics.784008/#post-28042158
     
  7. Jun 28, 2025 at 2:09 PM
    #7
    Tacoandburritos

    Tacoandburritos [OP] Member

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    Thanks for the advice
     
  8. Jul 4, 2025 at 2:25 PM
    #8
    Tacoandburritos

    Tacoandburritos [OP] Member

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    Thanks again for the help. I changed the cabin filter, blower motor, resistor, as well as the wires and connectors. Everything is back together. I haven't had a chance to test it since the transmission and exhaust system are off the truck for the time being. Which brings me to the next set of questions. Is there blueprints and parts list for all the systems on the truck? More importantly the exhaust system and transmission. I need all the gaskets/seals for the exhaust. Transmission pan gasket, oil pan gasket, and rear main seal. I'm trying to order them offline and want to be sure im ordering the right parts.
     
  9. Jul 4, 2025 at 2:28 PM
    #9
    Dm93

    Dm93 Test Don't Guess

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    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.
    Put your vin in here for parts diagrams.
    https://www.partsouq.com
     
  10. Jul 4, 2025 at 3:07 PM
    #10
    Tacoandburritos

    Tacoandburritos [OP] Member

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    Thats flipping excellent. Thanks
     

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