KSpec

Dual Aircon Problem

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Hi, i have a ZR6 with dual aircon function.. recently my driver side is not working on heat mode.. when put in dual or both mode to Heat in HI mode only the passenger side works, the driver side is always cold.. anyone have anyideas whats happening? ive checked the fuse of A/C 1 = 7.5A and A/C2 = 10A both OK...

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I would think your aircon needs to be re-gassed?

The airconditioner has nothing to do with the heater. If the aircon needed to be regassed, it would not be cooling. KSpec is having the opposite where it is not heating... but only on the drivers side. Because of this, I suspect the issue to the the servo motor or the vane that is part of the heater core that controls how much air passes through it.

Out of curiosity, with the car off hold down the 'AUTO' and the 'Recirculate/Fresh Air' buttons and turn the ignition to the ON position (press the Engine Start button twice with your foot off the brake). When all the lights and display start to flash, release the buttons and wait until the lights stop flashing. Afterwards, any error codes should then be displayed in the form of a number on the driver's side temperature display. Let me know what numbers you get. If you get 21 and/or 24, don't panic. That's just the light sensor at the front not reading a bright value. If you get 41/43/46... then it's definitely the air mix servo. If it still only displays 0 or 21 and/or 24, press the 'Recirculate/Fresh Air' button, let it cycle through it's check (it will count up from 0 to 9) and when it gets back to 0 again, press the 'AUTO' button to see if the numbers have changed.

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I would think your aircon needs to be re-gassed?

The airconditioner has nothing to do with the heater. If the aircon needed to be regassed, it would not be cooling. KSpec is having the opposite where it is not heating... but only on the drivers side. Because of this, I suspect the issue to the the servo motor or the vane that is part of the heater core that controls how much air passes through it.

Out of curiosity, with the car off hold down the 'AUTO' and the 'Recirculate/Fresh Air' buttons and turn the ignition to the ON position (press the Engine Start button twice with your foot off the brake). When all the lights and display start to flash, release the buttons and wait until the lights stop flashing. Afterwards, any error codes should then be displayed in the form of a number on the driver's side temperature display. Let me know what numbers you get. If you get 21 and/or 24, don't panic. That's just the light sensor at the front not reading a bright value. If you get 41/43/46... then it's definitely the air mix servo. If it still only displays 0 or 21 and/or 24, press the 'Recirculate/Fresh Air' button, let it cycle through it's check (it will count up from 0 to 9) and when it gets back to 0 again, press the 'AUTO' button to see if the numbers have changed.

Thanks! Maybe i should just not say stuff lol, but i learn.

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Just on a side note. i have seen a few air cond issues where the driver may dislodge the wire to the servo motor on the r/h side of the aircon box. As he or she puts the park brake on their shoe may snag the wire and in some cases the servo plastic housing may brake and require replacement. i have seen 3 of these issues and 2 were on one car (dept of defence aurion) 1 owner 73 drivers, lol

if you lie on the drivers floor and look up toward the air cond box you can see 2 servo motors and wiring plugs, the lower one is the most common one. this would stop the heater box from moving so it depends on where it last got stuck - whether it is hot and no cold or vice-versa.

cheers Tim.

p.s. the 2 servo motors come as 1 piece on the locating plate when ordering a replacement.. i may have a spare servo somewhere ????????

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Just on a side note. i have seen a few air cond issues where the driver may dislodge the wire to the servo motor on the r/h side of the aircon box. As he or she puts the park brake on their shoe may snag the wire and in some cases the servo plastic housing may brake and require replacement. i have seen 3 of these issues and 2 were on one car (dept of defence aurion) 1 owner 73 drivers, lol

if you lie on the drivers floor and look up toward the air cond box you can see 2 servo motors and wiring plugs, the lower one is the most common one. this would stop the heater box from moving so it depends on where it last got stuck - whether it is hot and no cold or vice-versa.

cheers Tim.

p.s. the 2 servo motors come as 1 piece on the locating plate when ordering a replacement.. i may have a spare servo somewhere ????????

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Hi all. I have the exact same problem. The drivers side air con will not blow cold (only hot). I have done this and mine shows fault 21, 24 & 46?? What am I looking at?

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Just on a side note. i have seen a few air cond issues where the driver may dislodge the wire to the servo motor on the r/h side of the aircon box. As he or she puts the park brake on their shoe may snag the wire and in some cases the servo plastic housing may brake and require replacement. i have seen 3 of these issues and 2 were on one car (dept of defence aurion) 1 owner 73 drivers, lol

if you lie on the drivers floor and look up toward the air cond box you can see 2 servo motors and wiring plugs, the lower one is the most common one. this would stop the heater box from moving so it depends on where it last got stuck - whether it is hot and no cold or vice-versa.

cheers Tim.

p.s. the 2 servo motors come as 1 piece on the locating plate when ordering a replacement.. i may have a spare servo somewhere ????????

Thanks. this was my problem, and its now fixed!!!

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I have been suffering with this exact problem but can’t afford to get it fixed 3 years now, also has anyone else had their dash melt? Yes black and sticky 

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Btw mine is 2006 aurion presara how much roughly would these parts cost and can I get non genuine toyota?

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