2010 Cadillac CTS Sedan AWD V6-3.6L Page 605
12. If both circuits test normal, test or replace the actuator.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Air Inlet Valve Actuator Replacement (Left Hand Drive) (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service
and Repair/Air Inlet Valve Actuator Replacement)Air Inlet Valve Actuator Replacement (Right Hand Drive) (See: Application and ID)
* Mode Valve Actuator Replacement (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and Repair/Mode
Valve Actuator Replacement)
* Temperature Valve Actuator Replacement - Left Side (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service and
Repair/Temperature Valve Actuator Replacement - Left Side)
* Temperature Valve Actuator Replacement - Right Side (See: Heating and Air Conditioning/Air Door/Air Door Actuator / Motor/Service
and Repair/Temperature Valve Actuator Replacement - Right Side)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for the HVAC control module replacement, setup,
and programming
B3773
DTC B0248, B0268, B0408, B0413, B0418, B0423, B3761, or B3773
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 the diagnostic category.
DTC Descriptors
DTC B0248 61
- Air Flow Control 3 Circuit Actuator Stuck
DTC B0268 61
- Air Flow Control 7 Circuit Actuator Stuck
DTC B0408 61
- Temperature Control 1 Circuit Actuator Stuck
DTC B0413 06
- Temperature Control 1 Feedback Circuit Short to Ground or Open
DTC B0418 61
- Temperature Control 2 Circuit Actuator Stuck
DTC B0423 06
- Temperature Control 2 Feedback Circuit Short to Ground or Open
DTC B3761 06
- Air Flow Control 3 Feedback Circuit Short to Ground or Open
DTC B3773 06
- Air Flow Control 7 Feedback Circuit Short to Ground or Open
Diagnostic Fault Information
