Sunday, November 29, 2020

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1019

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1019



Temperature Versus Resistance - Intake Air Temperature Sensor (See: Powertrain Management/Computers and Control



Systems/Specifications) table and verify that the resistance is within 5 % of the specification.



瀚慖f not within the specified, replace the B75B MAF/IAT sensor.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Mass Airflow Sensor with Intake Air Temperature Sensor Replacement (LLT) (See: Powertrain Management/Computers and Control



Systems/Air Temperature Sensor ( Ambient / Intake )/Service and Repair)Mass Airflow Sensor with Intake Air Temperature Sensor



Replacement (LSA) (See: Powertrain Management/Computers and Control Systems/Air Temperature Sensor ( Ambient / Intake )/Service



and Repair)Mass Airflow Sensor with Intake Air Temperature Sensor Replacement (LF1) (See: Powertrain Management/Computers and



Control Systems/Air Temperature Sensor ( Ambient / Intake )/Service and Repair)



* Control Module References (See: Testing and Inspection/Programming and Relearning)for engine control module replacement, setup, and



programming



P0113



DTC P0111-P0113 (w/LLT)



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions)provides an overview of each diagnostic category.



DTC Descriptors



DTC P0111



- Intake Air Temperature (IAT) Sensor Circuit Performance



DTC P0112



- Intake Air Temperature (IAT) Sensor Circuit Low Voltage



DTC P0113



- Intake Air Temperature (IAT) Sensor Circuit High Voltage



Diagnostic Fault Information



Typical Scan Tool Data



Circuit Description



The intake air temperature (IAT) sensor is an integral part of the mass air flow (MAF) sensor. The IAT sensor is a variable resistor that measures



the temperature of the intake air. The engine control module (ECM) supplies 5 V to the IAT signal circuit and supplies a ground to the low



reference circuit.



The following table illustrates the difference between temperature, resistance, and voltage: