DTC U3001-77: Control Module Improper Shutdown - Commanded position not reachable: Action
NOTE:
Release the electric park brake, so the park brakes are in a known state
- Refer to the appropriate system wiring diagrams and check the anti-lock brake system control module power and ground circuits for open circuit, high resistance
- Refer to the appropriate service information and test the battery and charging system
- Check the integrity of the right/left electric park brake actuators. Install a new electric park brake actuator as necessary