2010 Cadillac Truck SRX FWD V6-3.0L Page 379

2010 Cadillac Truck SRX FWD V6-3.0L Page 379

test normal, replace the appropriate actuator.

3. If all circuits test normal, replace the K33 HVAC Control Module

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) for HVAC control module replacement, setup, and

programming

B0509

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

DTC B3933 02

- Air Conditioning Evaporator Temperature Sensor Circuit Short to Ground

DTC B3933 05

- Air Conditioning Evaporator Temperature Sensor Circuit High Voltage/Open

Circuit/System Description