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2010 Cadillac Truck SRX AWD V6-3.0L Page 381

2010 Cadillac Truck SRX AWD V6-3.0L Page 381



瀚慖f greater than the specified value, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the K33 HVAC



Control Module.



3. Ignition ON, test for 4.8-5.2 V between the signal circuit terminal A and ground.



瀚慖f less than the specified range, test the signal circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the



K33 HVAC Control Module.



瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K33 HVAC Control



Module.



4. If all circuits test normal, replace the temperature sensor.



Repair Instructions



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



* HVAC Component Replacement Reference (See: Heating and Air Conditioning/Service and Repair/Removal and Replacement)



* Control Module References (See: Testing and Inspection/Programming and Relearning)



B0514



DTC B0173, B0178, B0509, B0514, B0519, B3583, or B3933



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 B0173 02



- Upper Left Duct Air Temperature Sensor Circuit Short to Ground



DTC B0173 05



- Upper Left Duct Air Temperature Sensor Circuit High Voltage/Open



DTC B0178 02



- Lower Left Duct Air Temperature Sensor Circuit Short to Ground



DTC B0178 05



- Lower Left Duct Air Temperature Sensor Circuit High Voltage/Open



DTC B0509 02



- Upper Right Duct Air Temperature Sensor Circuit Short to Ground



DTC B0509 05



- Upper Right Duct Air Temperature Sensor Circuit High Voltage/Open



DTC B0514 02



- Lower Right Duct Air Temperature Sensor Circuit Short to Ground



DTC B0514 05



- Lower Right Duct Air Temperature Sensor Circuit High Voltage/Open



DTC B0519 02



- Rear Upper Duct Air Temperature Sensor Circuit Short to Ground



DTC B0519 05



- Rear Upper Duct Air Temperature Sensor Circuit High Voltage/Open



DTC B3583 02



- Rear Lower Duct Air Temperature Sensor Circuit Short to Ground



DTC B3583 05



- Rear Lower Duct Air Temperature Sensor Circuit High Voltage/Open

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