LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2017 >> Yaris iA Automatic Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Lin Communication System - Diagnostic Codes >> Lin Communication System >> DTC U3000-44: Control Module data memory failure >> Contents
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC U3000-44: Control Module data memory failure: Contents

DTC No. Detection Item DTC Detection Condition Warning Indicate Memory Fail-safe Operation Note
U300044 Control Module data memory failure Power source control (power management control ECU) internal malfunction Not applicable DTC Stored DTC Stored
  • Drive cycle: Not applicable
  • Self test type: CMDTC self test
DESCRIPTION Power source control (power management control ECU) internal malfunction
DETECTION CONDITION
  • The power source control (power management control ECU) detected a NVRAM malfunction in the power source control (power management control ECU).
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.
POSSIBLE CAUSE
  • Power source control (power management control ECU) malfunction
SYSTEM WIRING DIAGRAM Not applicable
scientia non olet · About LEMON Manuals