Circuit/System Verification

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.

Ignition - On / Vehicle - In Service Mode
Verify DTC U18A2 is not set.
- If the DTC is set
  Refer to: Diagnostic Trouble Code (DTC) List - Vehicle
- Go to next step: If the DTC is not set
Verify the scan tool parameter:
- Fuel Pump Phase U-V-W Circuits High Voltage Test Status = Not Run or Okay
- Fuel Pump Phase U-V-W Circuits Low Voltage Test Status = Not Run or Okay
- Fuel Pump Phase U-V-W Circuits Open Test Status = Not Run or Okay
- If not the specified state
  Refer to: Circuit/System Testing
- Go to next step: If the specified state
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Verify the DTC does not set.
- If the DTC sets
  Refer to: Circuit/System Testing
- Go to next step: If the DTC is not set
All OK.