DTC U0078-88: Control Module Communication Bus "F" Off - Bus off: Action

NOTE: Do NOT replace the anti-lock brake system control module. The anti-lock brake system control module has lost synchronisation with the FlexRay bus. This may be due to vehicle harness connections or harness integrity

Refer to the electrical circuit diagrams and check the FlexRay bus circuit for short circuit to ground, short circuit to power, open circuit, high resistance