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DTC 4-2 Green LED Error: Description

This DTC is output when one of the following occurs: 1) the mayday ECU assembly is malfunctioning; 2) the green LED is malfunctioning; or 3) the wire harness between the mayday ECU assembly and the map light plate assembly (mayday switch assembly) is open or short.

DTC DETECTION CONDITION CHART

DTC No. DTC Detection Condition Trouble Area
4-2 Communication or communication line is abnormal between mayday ECU and map light plate (mayday switch)
  • Mayday ECU assembly
  • Map light plate assembly
  • Mayday switch assembly
  • Wire harness
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