DTC U3000-49: Electrical Supply Unit (ESU) Internal Malfunction [Electrical Supply Unit (ESU)]: Notes

DTC U3000-49: (ELECTRICAL SUPPLY UNIT) DETECTION CONDITION AND POSSIBLE CAUSE

Description	Electrical supply unit (ESU) internal malfunction
Detection condition	RAM/ROM/ALU/TIMER malfunction in the electrical supply unit (ESU) is detected.
Fail-safe	Exterior lighting system When the ignition is switched ON (engine off or on), the headlights LO, TNS (parking lights), and panel light turn on and other exterior light controls are stopped. Interior light control system Turn the interior light off when the room light switch is in the DOOR position.
Possible cause	Electrical supply unit (ESU) internal malfunction
System wiring diagram	Not applicable