DCC overvoltage on VCB-side
• Reset DTC • Toggle ignition key to "key off" and await system reset then "key on" i.e. system wake up. • Read out DTC's again • If DTC remains active check voltage level from battery pack E83. The voltage should be withing the range of 500V to 750V. • If over voltage detected check DTC’s from battery pack.
What you'll see
No driver-visible symptom recorded.
System reaction
• DCC disabled and enter error state above 900V • VOR, 24V not charging. DCC will be disabled and enter error state and the 24-volt system will drain the 24-volt batteries. • Amber warning lamp "24V batteries not charged" and "Hybrid System Fault" is shown in ICL
Diagnostic depth
One of the following DCC2 events: DC Bus.HighVoltageHardware DC Bus.High
•Hybrid battery has wrong voltage level. •Too high generated voltage. •Too high charging voltage (e.g. from OBC or CCS).