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Home >> Hyundai >> 2013 >> Equus Signature >> Repair and Diagnosis >> Accessories & Equipment >> Steering Column Switches >> Multi Function Switch Diagnosis >> DTC B1553: Light Multifunction Switch Error >> General Information >> DTC Detecting Condition
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General Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Light switch input signal check
  1. OFF & Tail input line short
  2. OFF & H/L LOW input line short
  3. OFF & Auto input line short
Enable Conditions
  • IG KEY ON.
  • Engine running (In case of Tail switch, enable conditions are BAT, Key In, ACC, IG KEY ON, engine running).
Threshold Value
  • OFF & Tail: the signal voltage of OFF switch and Tail switch is 0V at the same time.
  • OFF & H/L LOW: the signal voltage of OFF switch and H/H LOW is 0V at the same time.
  • OFF & Auto: the signal voltage o f OFF switch and Auto switch is 0V at the same time.
Diagnostic Time
  • Immediately
DTC Erasing Time
  • DTC is erased immediately after trouble fixed.