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Home >> Lexus >> 2021 >> LC 500 2D Coupe >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System - Diagnostic Codes (Coupe) (3 Of 5) >> Airbag System >> DTC B1805: Short in P Squib Circuit; DTC B1806: Open in P Squib Circuit; DTC B1807: Short in P Squib Circuit (to Ground); DTC B1808: Short in P Squib Circuit (to +B) [05/2023 - ] >> Caution / Notice / Hint

Caution / Notice / Hint

NOTE:
  • After the engine switch is turned off, there may be a waiting time before disconnecting the negative (-) battery terminal.

    Refer to BEFORE DISCONNECTING BATTERY [05/2023 - ]

  • When disconnecting and reconnecting the battery

    HINT: 

    When disconnecting and reconnecting the battery, there is an automatic learning function that completes learning when the respective system is used.

    Refer to AUTOMATIC LEARNING CHART [05/2023 - ]

  • After replacing the airbag ECU assembly, refer to initialization.

    Refer to WORK PROCEDURE [05/2023 - ]

HINT: 

To perform the simulation method, enter check mode (signal check) with the Techstream (Refer to DTC CHECK / CLEAR [04/2020 - ] ), and then wiggle each connector of the airbag system or drive the vehicle on various types of road (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [05/2023 - ] ).

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