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Where is the ambient temperature sensor located ?


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Outside Temperature Sensor - Chevy HHR Network

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Jan 25, 2016 | 2008 Chevrolet Chevrolet HHR LT

1 Answer

My outside air temp is reading at -40 on my 2008 Pontiac Torrent. What is the right sensor and where is it located?


Ambient Air Temperature Sensor (UH9)
At the front of the vehicle, at the lower left side of the front bumper bar
Ambient Air Temperature Sensor (UH9)
Pin
Wire
Circuit
Function
A
0.35 L-GN/BK
735
Ambient Air Temperature Sensor Signal
B
0.35 YE
61
Low Reference

Jul 22, 2015 | 2008 Pontiac Torrent

1 Answer

What does code P0072 mean for a 2011 Chevy Equinox


P0072 - Ambient Air Temperature Sensor Circuit Low Input

- Faulty ambient air temperature sensor
- Ambient air temperature sensor harness is open or shorted
- Ambient air temperature sensor circuit poor electrical connection

Mar 11, 2015 | 2011 Chevrolet Equinox

1 Answer

DTC code p0071 what is this and how to repair


- Faulty ambient air temperature sensor
- Ambient air temperature sensor harness is open or shorted
- Ambient air temperature sensor circuit poor electrical connection

Jan 30, 2015 | Cars & Trucks

1 Answer

How do I replace the ambient air temperature sensor


The ambient air temp sensor is located somewhere behind the grille

Sep 22, 2014 | 2003 Ford F150 Regular Cab

2 Answers

What do the codes p0072 and p0073 mean on my 2008 Dodge avenger? w


Well, I would say that it means that SOMEBODY is confused!

Diagnostic Test Code (DTC) P0072 is defined by SAE J2012 as "Ambient Air Temperature Sensor Circuit Low" DTC P0073 is defined as "Ambient Air Temperature Sensor Circuit High"

I do not know how the ambient air temperature sensor circuit could be faulted both HIGH and LOW at the same time.

The only thing I have ever seen cause something like this is when people try to install aftermarket "performance chips" on their vehicles which "lie" to the computer about what the ambient air temperature is.

Apr 23, 2012 | 2008 Dodge Avenger

1 Answer

I was told that I need a discharge sensor 2006 Mercury Milan. The AC blows but they said the sensor in the dash is not telling the AC to come on. But when I try to buy this part no one knows what that...


There are two sensors; Climate Control Sun Sensor located on the dash or rearview mirror, and an Ambient Air Temperature Sensor located by the climate control panel. I believe the one you're looking for will be the Ambient Air Temperature Sensor.

Mar 24, 2011 | Mercury Milan Cars & Trucks

1 Answer

Ambient air sensor location


The air temperature switch that the vehicle's computer uses to calculate for fuel mixture is in the air cleaner housing. I see it having 4 wire on a diesel engine it and the wiring color is different for manual and automatic transmissions, If you tell me if the truck is manual or auto trans and 2WD or 4wd I can tell you the colors of the wires to look for but first see if it accidentally got disconnected. A gasoline engine has a two wire sensor in the intake duct or air filter housing the wires on this two wire sensor are dark blue/dark green and the other wire is dark blue/ light green.
The ambient air temperature switch for temperature control and outside temperature display is located between the drivers headlight area and radiator, the colors of the wires on the sensor are violet/light green and dark blue/dark green again ensure it is plugged in

Dec 04, 2010 | 1992 Dodge Dakota

1 Answer

Where is the iat sensor located on a 1999 chevy cavalier 4cyl


The Intake Air Temperature (IAT) sensor determines the air temperature inside the intake manifold. Resistance changes in response to the ambient air temperature. The sensor has a negative temperature coefficient. As the temperature of the sensor rises the resistance across the sensor decreases. This provides a signal to the PCM indicating the temperature of the incoming air charge. This sensor helps the PCM to determine spark timing and air/fuel ratio. Information from this sensor is added to the pressure sensor information to calculate the air mass being sent to the cylinders. The IAT is a two wire sensor, a 5-volt reference signal is sent to the sensor and the signal return is based upon the change in the measured resistance due to temperature.

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Fig. 1: The IAT sensor is located in the air cleaner outlet tube-2.2L engine and 2.4L engine

Hope helped.

Apr 11, 2010 | 1999 Chevrolet Cavalier

1 Answer

04 Tahoe AC blows hot air on drivers side but resets if restarted


A educated guess I would have to say there is a problem with HVAC control module ! electronics you know ! But that's not the way to do things ! There could be codes stored in the module. The Chevy dealer my have a reflash bulletin for this problem . Then can reflash , reprogram the control module ! The first place to start is checking for codes in the HVAC module.
The HVAC control module is a class 2 device that interfaces between the operator and the HVAC system to maintain air temperature and distribution settings. The battery positive voltage circuit provides power that the control module uses for keep alive memory (KAM). If the battery positive voltage circuit loses power, all HVAC DTCs and settings will be erased from KAM. The body control module (BCM), which is the vehicle mode master, provides a device on signal.
Air Temperature Sensors The air temperature sensors are a 2-wire negative temperature co-efficient thermistor. The vehicle uses the following air temperature sensors:
?€¢
Ambient Air Temperature Sensor

?€¢
Inside Air Temperature Sensor Assembly

?€¢
Inside Air Temperature Sensor Assembly-Auxiliary

?€¢
Upper Left Air Temperature Sensor

?€¢
Upper Right Air Temperature Sensor

?€¢
Lower Left Air Temperature Sensor

?€¢
Lower Right Air Temperature Sensor

?€¢
Upper Air Temperature Sensor-Auxiliary

?€¢
Lower Air Temperature Sensor-Auxiliary
A signal and low reference circuit enables the sensor to operate. As the air temperature surrounding the sensor increases, the sensor resistance decreases. The sensor signal voltage decreases as the resistance decreases. The sensor operates within a temperature range between -40?° to +101?°C (-40?° to +215?°F). The sensor signal varies between 0-5 volts.
The input of the duct air temperature sensors are different from the ambient and inside air temperature sensors. The HVAC control module converts the signal to a range between 0-255 counts. As the air temperature increases the count value will decrease.
If the HVAC control module or auxiliary HVAC control module detects a malfunctioning sensor, then the control module software will use a defaulted air temperature value. The default value for the ambient and inside air temperature sensors will be displayed on the scan tool. The default value for the duct air temperature sensors will not be displayed on the scan tool. The scan tool parameter for the duct air temperature sensors are the actual state of the signal circuit. The default action ensures that the HVAC system can adjust the inside air temperature near the desired temperature until the condition is corrected.
The ambient air temperature sensor mounts underhood and can be affected by city traffic, by idling, and by restarting a hot engine. Therefore, the HVAC control module filters the value of the ambient air temperature sensor for temperature display. The ambient air temperature value is updated under the following conditions: Or you can just buy a new control module an hope that it fixes it. $89.00 at www.partsgeek.com

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Sep 18, 2009 | 2005 Chevrolet Silverado

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