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 DTC P0641, P0651 is not set.
- If the DTC is set
- Go to next step: If the DTC is not set
- Engine - Running
- Verify DTC P0341, P0366 is not set.
- If the DTC is set
Refer to: Circuit/System Testing
- Go to next step: If the DTC is not set
- If the DTC is set
- Verify the scan tool parameter:
- Exhaust Camshaft Position Active Counter = Increments
- Intake Camshaft Position Active Counter = Increments
- If the parameter value does not increment
Refer to: Circuit/System Testing
- Go to next step: If the parameter value increments
- Verify the scan tool parameter: Exhaust Camshaft Position Active Counter or Intake Camshaft Position Active Counter=Increments
Perform the action while monitoring the parameter:
- Wiggle the harness and connector: B23 Camshaft Position Sensor
- Wiggle the harness and connector: K20 Engine Control Module
- If the parameter value does not increment
Repair as necessary - Wiring / Terminal(s) / Electrical Connector(s)
- Go to next step: If the parameter value increments
- 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.