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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Electrical >> Gauges >> Meter / Gauge System (Except 12.3 Inch Display) - Diagnostic Codes & Symptom Tests (1 Of 2) >> METER / GAUGE SYSTEM (except 12.3 Inch Display) >> DTC B1508-19: Turn Signal/Hazard Flasher Circuit Current Above Threshold [12/2019 - 11/2023] >> Description

DTC B1508-19: Turn Signal/Hazard Flasher Circuit Current Above Threshold [12/2019 - 11/2023]: 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, all of the turn signal lights in that circuit will not blink.

DTC No. Detection Item DTC Detection Condition Trouble Area
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
    • Headlight ECU sub-assembly*1
    • Front turn signal light socket
    • Front turn signal light bulb
  • Outer mirror control ECU assembly*2
  • Outer rear view mirror assembly
    • Side turn signal light assembly
  • Device connected to option connector (trailer towing)*3
  • Rear combination light assembly
    • Rear combination light cord
    • Rear turn signal light socket
    • Rear turn signal light bulb
  • Harness or connector
  • Combination meter assembly
  1. *1: w/ AFS
  2. *2: w/ Seat Position Memory
  3. *3: w/ Option Connector (Trailer Towing)
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