DTC U0128-87: Lost Communication With Park Brake Control Module - Missing message: Action
- Refer to the applicable SYSTEM WIRING DIAGRAM(S) and check the electric park brake control module power and ground circuits for open circuit, high resistance
- Using the manufacturer approved diagnostic system, perform a CAN network integrity test. Refer to the applicable SYSTEM WIRING DIAGRAM(S) and check the high speed CAN bus circuit for short circuit to ground, short circuit to power, open circuit, high resistance
- Using the manufacturer approved diagnostic system, check the electric park brake control module for related DTCs and refer to the relevant DTC index