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.
- Engine - Running
- Verify the scan tool parameter:
- Ignition Coil 1 - 4 Control Circuit High Voltage Test Status = OK or Not Run
- Ignition Coil 1 - 4 Control Circuit Low Voltage Test Status = OK or Not Run
- Ignition Coil 1 - 4 Control Circuit Open Test Status = OK or Not Run
- If not the specified state
Refer to: Circuit/System Testing
- Go to next step: If the specified state
- Verify the scan tool parameter:
- Ignition Coil 1 - 4 Control Circuit High Voltage Test Status = OK or Not Run
- Ignition Coil 1 - 4 Control Circuit Low Voltage Test Status = OK or Not Run
- Ignition Coil 1 - 4 Control Circuit Open Test Status = OK or Not Run
- Perform the action while monitoring the parameter:
- Wiggle the harness and connector: T8 Ignition Coil
- Wiggle the harness and connector: K20 Engine Control Module
- If not the specified state
Repair as necessary - Wiring / Terminal(s) / Electrical Connector(s)
- 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
- If the DTC sets
- All OK.