Circuit/System Verification

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

Ignition - On / Vehicle - In Service Mode
Verify DTC U0140 is not set.
- If DTC U0140 is set
  Refer to:DTC U0100-U02FF (with HP4) , or DTC U0100-U02FF (without HP4)
- Go to next step: If the DTC is not set
Verify DTC U184B is not set.
- If DTC U184B is set
  Refer to:DTC U184B
- Go to next step: If the DTC is not set
Connect - Pressure Gauge - Air Conditioning Refrigerant
Verify the scan tool parameter:A/C Low Side Pressure Sensor = Pressure Gauge - Within 10% of each other
- If not within 10% of each other
  Refer to: Circuit/System Testing
- Go to next step: If within 10% of each other
Refer to:Air Conditioning (A/C) System Performance Test