2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 322
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
* Upper Left Air Temperature Sensor
* Upper Right Air Temperature Sensor
* Lower Left Air Temperature Sensor
* Lower Right Air Temperature Sensor
* Upper Auxiliary Air Temperature Sensor
* Lower Auxiliary Air Temperature Sensor
* Auxiliary Inside Air Temperature Sensor
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掳C
(-40 to +215掳F). The sensor signal varies between 0-5 volts. 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.
Diagnostic Aids
Conditions for Running the DTC
Ignition ON.
Conditions for Setting the DTC
The HVAC control module detects the temperature sensor signal circuit is less than -36掳C (-38掳F) or greater than 215掳C (419掳F) for greater than 15
seconds.
Action Taken When the DTC Sets
The system operates using a default value.
Conditions for Clearing the DTC
* The DTC will become history if the HVAC control module no longer detects the condition that set the DTC.
* The history DTC will clear after 100 fault-free ignition cycles.
Reference Information
Schematic Reference
HVAC Schematics (See: Heating and Air Conditioning/Diagrams/Electrical Diagrams/HVAC - Automatic)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Showing posts with label The air temperature sensors are a 2-wire negative temperature co-efficient thermistor. The vehicle uses the following air temperature sensors:. Show all posts
Showing posts with label The air temperature sensors are a 2-wire negative temperature co-efficient thermistor. The vehicle uses the following air temperature sensors:. Show all posts
Saturday, August 29, 2020
Sunday, June 28, 2020
2010 Cadillac Truck SRX AWD V6-3.0L Page 380
2010 Cadillac Truck SRX AWD V6-3.0L Page 380
The air temperature sensors are a 2-wire negative temperature co-efficient thermistor. The vehicle uses the following air temperature sensors:
* Air temperature sensor - left upper
* Air temperature sensor - left lower
* Air temperature sensor - right upper
* Air temperature sensor - right lower
* Air temperature sensor - rear upper (only with CJ4)
* Air temperature sensor - rear lower (only with CJ4)
* A/C evaporator temperature sensor
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 +85掳C
(-40 to +185掳F). The sensor signal varies between 0-5 V. 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 detects a malfunctioning sensor, then the control module
software will use a default air temperature value. The default action ensures that the HVAC system can adjust the inside air temperature near the
desired temperature until the condition is corrected.
Conditions for Running the DTC
* Ignition ON.
* The HVAC control module is ON.
Conditions for Setting the DTC
The HVAC control module detects the sensor signal out of range. The signal voltage is less than 0.1 V or greater than 4.9 V for more than 50 ms.
Action Taken When the DTC Sets
The system operates using a default value.
Conditions for Clearing the DTC
The sensor signal is within specified range between 0.1-4.9 V.
Reference Information
Schematic Reference
HVAC Schematics (See: Heating and Air Conditioning/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
Description and Operation
Automatic HVAC Description and Operation (See: Heating and Air Conditioning/Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Measure actual temperature using a thermometer at each of the duct temperature sensors. Compare this value to the appropriate scan tool Duct
Actual parameter. The measured temperature should be within 5掳C (9掳F) difference of appropriate Duct Actual parameter value.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the appropriate temperature sensor.
2. Test for less than 10 ohm between the temperature sensor ground circuit terminal B and ground.
Thursday, November 21, 2019
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 380
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 380
The air temperature sensors are a 2-wire negative temperature co-efficient thermistor. The vehicle uses the following air temperature sensors:
* Air temperature sensor - left upper
* Air temperature sensor - left lower
* Air temperature sensor - right upper
* Air temperature sensor - right lower
* Air temperature sensor - rear upper (only with CJ4)
* Air temperature sensor - rear lower (only with CJ4)
* A/C evaporator temperature sensor
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 +85掳C
(-40 to +185掳F). The sensor signal varies between 0-5 V. 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 detects a malfunctioning sensor, then the control module
software will use a default air temperature value. The default action ensures that the HVAC system can adjust the inside air temperature near the
desired temperature until the condition is corrected.
Conditions for Running the DTC
* Ignition ON.
* The HVAC control module is ON.
Conditions for Setting the DTC
The HVAC control module detects the sensor signal out of range. The signal voltage is less than 0.1 V or greater than 4.9 V for more than 50 ms.
Action Taken When the DTC Sets
The system operates using a default value.
Conditions for Clearing the DTC
The sensor signal is within specified range between 0.1-4.9 V.
Reference Information
Schematic Reference
HVAC Schematics (See: Heating and Air Conditioning/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
Description and Operation
Automatic HVAC Description and Operation (See: Heating and Air Conditioning/Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Measure actual temperature using a thermometer at each of the duct temperature sensors. Compare this value to the appropriate scan tool Duct
Actual parameter. The measured temperature should be within 5掳C (9掳F) difference of appropriate Duct Actual parameter value.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the appropriate temperature sensor.
2. Test for less than 10 ohm between the temperature sensor ground circuit terminal B and ground.
Monday, November 18, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 321
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 321
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
* Upper Left Air Temperature Sensor
* Upper Right Air Temperature Sensor
* Lower Left Air Temperature Sensor
* Lower Right Air Temperature Sensor
* Upper Auxiliary Air Temperature Sensor
* Lower Auxiliary Air Temperature Sensor
* Auxiliary Inside Air Temperature Sensor
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掳C
(-40 to +215掳F). The sensor signal varies between 0-5 volts. 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.
Diagnostic Aids
Conditions for Running the DTC
Ignition ON.
Conditions for Setting the DTC
The HVAC control module detects the temperature sensor signal circuit is less than -36掳C (-38掳F) or greater than 215掳C (419掳F) for greater than 15
seconds.
Action Taken When the DTC Sets
The system operates using a default value.
Conditions for Clearing the DTC
* The DTC will become history if the HVAC control module no longer detects the condition that set the DTC.
* The history DTC will clear after 100 fault-free ignition cycles.
Reference Information
Schematic Reference
HVAC Schematics (See: Heating and Air Conditioning/Diagrams/Electrical Diagrams/HVAC - Automatic)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
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
* Upper Left Air Temperature Sensor
* Upper Right Air Temperature Sensor
* Lower Left Air Temperature Sensor
* Lower Right Air Temperature Sensor
* Upper Auxiliary Air Temperature Sensor
* Lower Auxiliary Air Temperature Sensor
* Auxiliary Inside Air Temperature Sensor
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掳C
(-40 to +215掳F). The sensor signal varies between 0-5 volts. 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.
Diagnostic Aids
Conditions for Running the DTC
Ignition ON.
Conditions for Setting the DTC
The HVAC control module detects the temperature sensor signal circuit is less than -36掳C (-38掳F) or greater than 215掳C (419掳F) for greater than 15
seconds.
Action Taken When the DTC Sets
The system operates using a default value.
Conditions for Clearing the DTC
* The DTC will become history if the HVAC control module no longer detects the condition that set the DTC.
* The history DTC will clear after 100 fault-free ignition cycles.
Reference Information
Schematic Reference
HVAC Schematics (See: Heating and Air Conditioning/Diagrams/Electrical Diagrams/HVAC - Automatic)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Monday, November 11, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 322
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 322
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
* Upper Left Air Temperature Sensor
* Upper Right Air Temperature Sensor
* Lower Left Air Temperature Sensor
* Lower Right Air Temperature Sensor
* Upper Auxiliary Air Temperature Sensor
* Lower Auxiliary Air Temperature Sensor
* Auxiliary Inside Air Temperature Sensor
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掳C
(-40 to +215掳F). The sensor signal varies between 0-5 volts. 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.
Diagnostic Aids
Conditions for Running the DTC
Ignition ON.
Conditions for Setting the DTC
The HVAC control module detects the temperature sensor signal circuit is less than -36掳C (-38掳F) or greater than 215掳C (419掳F) for greater than 15
seconds.
Action Taken When the DTC Sets
The system operates using a default value.
Conditions for Clearing the DTC
* The DTC will become history if the HVAC control module no longer detects the condition that set the DTC.
* The history DTC will clear after 100 fault-free ignition cycles.
Reference Information
Schematic Reference
HVAC Schematics (See: Heating and Air Conditioning/Diagrams/Electrical Diagrams/HVAC - Automatic)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
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
* Upper Left Air Temperature Sensor
* Upper Right Air Temperature Sensor
* Lower Left Air Temperature Sensor
* Lower Right Air Temperature Sensor
* Upper Auxiliary Air Temperature Sensor
* Lower Auxiliary Air Temperature Sensor
* Auxiliary Inside Air Temperature Sensor
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掳C
(-40 to +215掳F). The sensor signal varies between 0-5 volts. 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.
Diagnostic Aids
Conditions for Running the DTC
Ignition ON.
Conditions for Setting the DTC
The HVAC control module detects the temperature sensor signal circuit is less than -36掳C (-38掳F) or greater than 215掳C (419掳F) for greater than 15
seconds.
Action Taken When the DTC Sets
The system operates using a default value.
Conditions for Clearing the DTC
* The DTC will become history if the HVAC control module no longer detects the condition that set the DTC.
* The history DTC will clear after 100 fault-free ignition cycles.
Reference Information
Schematic Reference
HVAC Schematics (See: Heating and Air Conditioning/Diagrams/Electrical Diagrams/HVAC - Automatic)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
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