Buick Regal: DTC P0571
Diagnostic Instructions
- Perform the Diagnostic System Check prior to using this diagnostic procedure:Diagnostic System Check - Vehicle
- Review the description of Strategy Based Diagnosis:Strategy Based Diagnosis
- An overview of each diagnostic category can be found here:Diagnostic Procedure Instructions
DTC Descriptor
DTC P0571
Cruise Control Brake Switch Circuit
Circuit/System Description
- For an overview of the component/system, refer to:Cruise Control Description and Operation (Without Adaptive Cruise Control) or Cruise Control Description and Operation (With Adaptive Cruise Control)
- The K20 sends a serial data message to the K9 indicating the B22 function that has been requested.
Conditions for Running the DTC
- Ignition/Vehicle=On
- Vehicle Speed.=Greater than 40 km/h (25 MPH)
- Cruise Control=On
Frequency the DTC runs=Continuously - After the running conditions are met - For greater than 5 s.
Conditions for Setting the DTC
Cruise Control Switch Signal=Invalid Serial Data
Actions Taken When the DTC Sets
DTCs listed in the DTC Descriptor Category=Type C DTC
Conditions for Clearing the DTC
DTCs listed in the DTC Descriptor Category=Type C DTC
Reference Information
Schematic Reference
Cruise Control Wiring Schematics
Connector End View Reference
Component Connector End View Index
Electrical Information Reference
- Circuit Testing
- Connector Repairs
- Testing for Intermittent Conditions and Poor Connections
- Wiring Repairs
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References
Circuit/System Verification
1. Ignition - On / Vehicle - In Service Mode.
2. Verify there are no other DTCs set, except for DTC P0571.
- If any other DTCs are set
Refer to:Diagnostic Trouble Code (DTC) List - Vehicle
- Go to next step: If no other DTCs are set
3. Replace the component:K20 Engine Control Module.
4. Operate the vehicle within the Conditions for Running the DTC. - Verify the DTC does not set.
- If DTC P0571 is set
Replace the component:K9 Body Control Module
- Go to next step: If the DTC is not set
5. All OK.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification.
For control module replacement, programming, and setup refer to: Control Module References.
READ NEXT:
DTC P0572 or P0573
Diagnostic Instructions
Perform the Diagnostic System Check prior to using this diagnostic
procedure: Diagnostic
System Check - Vehicle
Review the description of Strategy Based Diagnosis:Strateg
DTC P0575
Diagnostic Instructions
Perform the Diagnostic System Check prior to using this diagnostic
procedure:Diagnostic System
Check - Vehicle
Review the description of Strategy Based Diagnosis:Strategy
DTC P0703
Diagnostic Instructions
Perform the Diagnostic System Check prior to using this diagnostic
procedure:Diagnostic System
Check - Vehicle
Review the description of Strategy Based Diagnosis:Strategy
SEE MORE:
Transfer Case Bracket Replacement (2.0L LTG)
Removal Procedure
1. Raise and support the vehicle. Lifting and Jacking the Vehicle.
NOTE: The drive shaft remains in the wheel hub.
2. Front Wheel Drive Half Shaft- Right Side@Transfer Case - Disconnect.
3.
Remove the 2 transfer case bracket to transfer case bolts (1).
4.
Transfer Case Bracket
Piston and Connecting Rod Assemble
Special Tools
EN-46745 Piston Pin Clip Remover/Installer
EN-46745-4 Piston Pin Clip Remover/Installer Adapter
For equivalent regional tools, refer to Special Tools.
1.
NOTE: Install the piston onto the connecting rod with the arrow on top
of the piston
oriented to the same side as the cast fea
