CTS RWD V6-3.6L (2008)
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Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics)
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Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics)
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Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for Scan Tool Information
Circuit/System Verification
1. Ignition ON, observe the scan tool HVAC Driver Seat Vent Sw. parameter while pressing the driver VENTED seat switch. The readings should
change between Inactive and Active.
‹› If not the specified value, replace the HVAC Control Module.
2. If the scan tool displays normal and the driver vented seat is inoperative, refer to Circuit/System Testing.
3. Observe the scan tool HVAC Psgr. Seat Vent Sw. parameter while pressing the passenger VENTED seat switch. The readings should change
between Inactive and Active.
‹› If not the specified value, replace the HVAC Control Module.
4. If the scan tool displays normal and the passenger vented seat is inoperative, refer to Circuit/System Testing.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the inoperative blower motor(s).
2. Ignition OFF, test for less than 5 ohms between the ground circuit terminal B and ground.
‹› If greater than the specified value, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal C and ground.
‹› If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
4. Connect a test lamp between the signal circuit terminal A and battery voltage.
5. Press the VENTED seat switch through the high, medium, and low positions to OFF. The test lamp should illuminate until the OFF position is
reached.
‹› If the test lamp does not illuminate, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace
the MSM.
‹› If the test lamp is ON with the switch in the OFF position, test the signal circuit for a short to ground. If the circuit tests normal, replace the
MSM.
6. If all circuits test normal, test or replace the blower motor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Diagnostic Trouble
Code Tests and Associated Procedures/Verification Tests and Procedures) after completing the diagnostic procedure.
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Driver Seat and Passenger Seat Back Ventilation Heating and Cooling Blower Replacement (See: Service and Repair/Driver Seat and Passenger
Seat Back Ventilation Heating and Cooling Blower Replacement)
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Driver Seat and Passenger Seat Cushion Ventilation Heating and Cooling Blower Replacement (See: Service and Repair/Driver Seat and
Passenger Seat Cushion Ventilation Heating and Cooling Blower Replacement)
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Control Module References (See: Testing and Inspection/Programming and Relearning) for HVAC control module and MSM replacement, setup,
and programming
