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 P0658, P0659 is not set.
- If any of the DTCs are set
Refer to: DTC P0658, P0659, P2718, P2720, P2721, P2727, P2729, P2730, P281B, P281D, or P281E
- Go to next step: If none of the DTCs are set
- If any of the DTCs are set
- Perform the scan tool control function: Transmission Fluid Pressure Accumulator - On and Off
Verify the scan tool parameter:
- Transmission Fluid Pressure Accumulator Control Circuit High Test Status = Not Run or Okay
- Transmission Fluid Pressure Accumulator Control Circuit Low Test Status = Not Run or Okay
- Transmission Fluid Pressure Accumulator Control Circuit 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
- Perform the scan tool control function: Transmission Fluid Pressure Accumulator - On and Off
Verify a click can be heard or felt at the following component (s) when the scan tool control function was commanded: B280 Automatic Transmission Accumulator Solenoid Valve
- If a click cannot be heard or felt
Refer to: Circuit/System Testing
- Go to next step: If a click can be heard or felt
- If a click cannot be heard or felt
- 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
- If the DTC sets
- All OK.