DTC P0604-49; Electrical Supply Unit (ESU) Internal Malfunction: Notes

DTC P0604-49; ELECTRICAL SUPPLY UNIT (ESU) INTERNAL MALFUNCTION - DETECTION CONDITION & POSSIBLE CAUSE

Description	Electrical supply unit (ESU) internal malfunction
Detection condition	RAM malfunction in electrical supply unit (ESU) detected.
Fail-safe	Exterior lighting system When the ignition is switched ON (engine off or on), the headlights LO, TNS, and panel light turn on and other exterior light controls are stopped. Interior light control system Turn the interior light off. Rear wiper system Stop the rear wiper.
Possible cause	Electrical supply unit (ESU) malfunction
System wiring diagram	Not applicable