2010 Cadillac Truck SRX FWD V6-3.0L Page 456

2010 Cadillac Truck SRX FWD V6-3.0L Page 456

Conditions for Running the DTC

* Ignition ON.

* The HVAC control module is ON.

Conditions for Setting the DTC

B018A 02, B048C 02, B048C 02 or B1395 03

The HVAC control module detects the sensor signal out of range. The signal voltage is less than 0.1 V for more than 50 ms.

B018A 05, B048C 05, B048C 05 or B1395 07

The HVAC control module detects the sensor signal out of range. The signal voltage is greater than 4.9 V for more than 50 ms.

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 60% for humidity.

Conditions for Clearing the DTC

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)

Circuit/System Verification

1. Verify that DTC B1395 03 or B1395 07 is not present.

瀚慖f DTC is present, refer to Windshield Temperature And Inside Moisture Sensor Power Supply Malfunction.

2. Verify that DTC B048C 02 or B048C 05 is not present.

瀚慖f DTC is present, refer to Humidity Sensor Humidity Circuit Malfunction.

3. Verify that DTC B048F 02 or B048F 05 is not present.

瀚慖f DTC is present, refer to Humidity Sensor Temperature Circuit Malfunction.

4. Verify that DTC B018A 02 or B018A 05 is not present.

瀚慖f DTC is present, refer to Windshield Temperature Sensor Circuit Malfunction.

5. Measure actual temperature using a thermometer at the windshield temperature and inside moisture sensor. Compare this value to the scan

tool Passenger Compartment Humidity Sensor Temperature parameter. The measured temperature should be within 5掳C (9掳F) difference of