FixVault

Self-Diagnostic Logic

DTC CHART

DTC Self-diagnosis name DTC detecting condition Possible causes
B2554 ACC POWER CIRCUIT
  • Though the changing control to ACC position by push-button ignition switch operation is performed normally, ACC position power supply to the Intelligent Key unit is not supplied
  • The power supply position switching cannot be performed because the wake-up signal is not entered into PDU (Power Distribution Unit) during position changing control to ACC position by push-button ignition switch operation
  • Fuse
  • Harness and connector (Open or shorted in the circuit)