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Home >> Lexus >> 2022 >> NX 350 Base >> 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 [11/2021 - 03/2022] >> Description

DTC B1508-19: Turn Signal/Hazard Flasher Circuit Current Above Threshold [11/2021 - 03/2022]: Description

This DTC is stored when the combination meter assembly detects a short in a turn signal light circuit.

HINT: 

If there is a short in a turn signal light circuit, the turn signal lights on the side with the short circuit will blink faster than usual.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from Priority
B1508-19 Turn Signal/Hazard Flasher Circuit Current Above Threshold Diagnosis Condition: 
  1. Auxiliary battery voltage is 10 V or more

Malfunction Status: 

  1. Short in turn signal light circuit
  • Headlight assembly*A
  • Outer mirror control ECU assembly
  • Outer rear view mirror assembly*B
  • Rear turn signal light assembly*C
  • Hazard warning signal switch assembly
  • Harness or connector
  • Combination meter assembly
Combination Meter A
  1. *A: Refer to the following tables to identify headlight assembly component names.
    W/ AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM

    Component
    Headlight ECU sub-assembly
    Headlight unit assembly
    1. - Headlight turn signal LED unit*1
    Front turn signal light socket and wire*2
    Front turn signal light bulb*2

    *1: for LED Type Turn Signal Light

    *2: for Bulb Type Turn Signal Light

    W/O AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM

    Component
    Front turn signal light socket
    Front turn signal light bulb
  2. *B: Refer to the following tables to identify outer rear view mirror assembly component names.
    Component
    Outer mirror retractor
    Side turn signal light assembly
  3. *C: Refer to the following tables to identify rear combination light assembly component names.
    Component
    Rear combination light socket and wire
    Rear combination light lens and body