2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 248
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.
B0183 02
The 5 V identification pulse is not received.
B0183 05
The input signal is static and greater than 4.8 V.
B1405 02
Clocked supply for multi zone sensor is shorted to ground.
B1405 05
Clocked supply for multi zone sensor is shorted to voltage or open.
Action Taken When the DTC Sets
* The system will use the last valid values as default.
* If no value is read at the time of fault, the HVAC Control Module uses 0 W/m(2) as intensity, 45掳 for elevation and -75掳 for azimuth.
Conditions for Clearing the DTC
B0163 02 or B0163 05
The sensor signal is within specified range between 0.1-4.9 V.
B0183 02
The 5 V identification pulse will be received.
B0183 05
The correct pulse signal succession will be received.
B1405 02 or B1405 05
The condition for setting the DTC is no longer present.
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
1. Verify that DTC B1405 02 or B1405 05 is not set.
