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Home >> Lexus >> 2021 >> LS 500 Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge System - Diagnostic Codes (1 Of 2) >> Meter / Gauge System >> DTC B1508-19: Turn Signal/Hazard Flasher Circuit Current Above Threshold [12/2017 - 10/2020] >> Description

DTC B1508-19: Turn Signal/Hazard Flasher Circuit Current Above Threshold [12/2017 - 10/2020]: Description

When the operation signal of the turn signal switch (headlight dimmer switch assembly) is input, the combination meter assembly operates the turn signal lights on the RH and LH sides in response to switch operation. If there is a short in the turn signal light circuit, the combination meter assembly outputs B1508-19.

HINT: 

If there is a short in a turn signal light circuit, all of the turn signal lights on the side with the short circuit will not blink.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note
B1508-19 Turn Signal/Hazard Flasher Circuit Current Above Threshold Diagnosis Condition: 
  1. Battery voltage is 7 V or more

Malfunction Status: 
  1. Short in turn signal light circuit
  • Headlight unit assembly
  • Headlight ECU sub-assembly
  • Side turn signal light assembly
  • Outer mirror actuator assembly
  • Front multiplex network door ECU
  • Rear combination light assembly
  • Rear light assembly
  • Combination meter assembly
  • Harness or connector
DTC stored -