Circuit/System Verification
WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition - On / Vehicle - In Service Mode
- Verify the scan tool parameter:ISS/OSS Supply Voltage = OK
- If not the specified state
Refer to: Circuit/System Testing
- Go to next step: If the specified state
- If not the specified state
- Transmission - Park
- Engine - Idling
- Increase the engine speed slowly to 3, 000 RPM and then back to idle.
Verify the scan tool parameter: Transmission ISS = The value should change smoothly and gradually as the engine speed is increased and decreased.
- If the value does not change smoothly and gradually
Refer to: Circuit/System Testing
- Go to next step: If the value changes smoothly and gradually
- If the value does not change smoothly and gradually
- 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.