94 es 300 a/c temperature sensor
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Driver School Candidate
Joined: Nov 2008
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From: ca
94 es 300 a/c temperature sensor
I just picked up a 94 es 300. Got an awesome deal because the car has a salvage title. Everything works fine but the when I press the outside temperature button on the a/c it reads -22F. I live in Southern California and we never get that cold!! Needless to say any temperature from 65 to 85 will turn the heater on because the climate controls thinks it's freezing outside. The only way to get cold air to come out, is to turn the dial all the way to "cold". I'm sure it's just a temp sensor that needs to be replaced or connected. I just need to know where to find it and hopefully a picture of what it looks like.
Thanks ahead of time.
Thanks ahead of time.
Lexus Test Driver
Joined: Sep 2007
Posts: 1,245
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From: Illinois
Ambient Temperature Display - Reads Minus 22 Degrees F
REF: HEATING & AIR CONDITIONING
NO.: AC001-95
DATE: MAY 3, 1996
MODEL: LS 400, GS 300, SC 400, SC 300, ES 300
Title AMBIENT TEMPERATURE DISPLAYS -22°F
On Lexus models equipped with an ambient temperature display, -22°F may appear in the ambient temperature display if continuity through the ambient temperature sensor circuit is interrupted. Since the -22°F is retained in memory, the condition will persist even after continuity through the ambient temperature sensor circuit has been re-established. Climate control system operation may also be adversely affected.
This condition can be corrected by briefly removing the fuse supplying the B+ power source to the air conditioning control unit.
Do not attempt repairs before performing the following reset procedure:
RESET PROCEDURE:
Refer to the table and remove the appropriate fuse for 30 seconds and reinstall.
IMPORTANT :Some of these fuses provide power to other systems for memory retention. Check and reset clock, radio presets, and memory as necessary.
If ambient temperature display is not corrected, refer to repair manual for diagnosis
REF: HEATING & AIR CONDITIONING
NO.: AC001-95
DATE: MAY 3, 1996
MODEL: LS 400, GS 300, SC 400, SC 300, ES 300
Title AMBIENT TEMPERATURE DISPLAYS -22°F
On Lexus models equipped with an ambient temperature display, -22°F may appear in the ambient temperature display if continuity through the ambient temperature sensor circuit is interrupted. Since the -22°F is retained in memory, the condition will persist even after continuity through the ambient temperature sensor circuit has been re-established. Climate control system operation may also be adversely affected.
This condition can be corrected by briefly removing the fuse supplying the B+ power source to the air conditioning control unit.
Do not attempt repairs before performing the following reset procedure:
RESET PROCEDURE:
Refer to the table and remove the appropriate fuse for 30 seconds and reinstall.
IMPORTANT :Some of these fuses provide power to other systems for memory retention. Check and reset clock, radio presets, and memory as necessary.
If ambient temperature display is not corrected, refer to repair manual for diagnosis
Thread Starter
Driver School Candidate
Joined: Nov 2008
Posts: 4
Likes: 0
From: ca
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has anyone tried a 94 heater control in a 92-93 and does the outside temp display work? it wasnt an option on my car but i would love to have it. i do have an ambient temp sensor on the bumper.
YES! The climate control from a 94 with "outside temp" DOES work on a 92-93!
i have a 99 es300 of my buddys here. we installed a double din, started the car up with the climate control disconnected to test the unit. after installation complete, realized that we left the climate control unplugged when we restarted the car. tried to do this procedure but cars stuck at -22. any help would be appreciated
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