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Home >> Lexus >> 2021 >> LC 500 2D Coupe >> Repair and Diagnosis >> Accessories & Equipment >> Interior/Exterior Trim >> Active Rear Wing System - Diagnostic Codes & Symptom Tests (Coupe) >> Active Rear Wing System >> DTC B1318: Short in Manual Switch Circuit [03/2017 - ] >> Description

DTC B1318: Short in Manual Switch Circuit [03/2017 - ]: Description

This DTC is stored when the No. 4 combination switch assembly (spoiler control switch) is determined to be stuck on or there is a short in the No. 4 combination switch assembly (spoiler control switch) circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area
B1318 Short in Manual Switch Circuit When voltage at terminal ECUB of the spoiler control ECU assembly is 9 V or more, the No. 4 combination switch assembly (spoiler control switch) is stuck on for 30 seconds or more.
  • No. 4 combination switch assembly (spoiler control switch)
  • Spoiler control ECU assembly
  • Harness or connector