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Home >> Lexus >> 2021 >> NX 300h Base >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge / Display System - Diagnostic Codes & Symptom Tests >> Meter / Gauge System >> DTC B1507: Open in Turn Signal Circuit; DTC B1508: Short in Turn Signal / Hazard Flasher Circuit [10/2014 - 09/2017] >> Description

DTC B1507: Open in Turn Signal Circuit; DTC B1508: Short in Turn Signal / Hazard Flasher Circuit [10/2014 - 09/2017]: Description

These DTCs are stored when the combination meter assembly detects an open in a turn signal light circuit, a short in a turn signal light circuit, or a short in the hazard warning light circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area
B1507 Open in Turn Signal Circuit Both conditions are met:
  • IG voltage is 10.5 V or higher.
  • Open in turn signal light circuit.
  • Harness or connector
  • Outer mirror control ECU assembly*1
  • Outer rear view mirror assembly
  • Side turn signal light assembly
  • Clearance light assembly
  • Headlight light control ECU sub-assembly*2
  • Rear combination light socket and wire sub-assembly
  • Combination meter assembly
B1508 Short in Turn Signal / Hazard Flasher Circuit Both conditions are met:
  • IG voltage is 10.5 V or higher.
  • Short in turn signal light circuit or hazard warning light circuit.
  • Harness or connector
  • Outer mirror control ECU assembly*1
  • Outer rear view mirror assembly
  • Side turn signal light assembly
  • Clearance light assembly
  • Headlight light control ECU sub-assembly*2
  • Rear combination light socket and wire sub-assembly
  • Combination meter assembly
  1. *1: w/ Memory

    *2: for Triple Beam Headlight