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Home >> Lexus >> 2018 >> LS 500h AWD >> Repair and Diagnosis (Single Page) >> Transmission >> Transmission Control Systems >> Electronic A/T Shift Lever System (L310F) - Diagnostic Codes (2 Of 7) >> Electronic Shift Lever System >> DTC P1779-96: Gear Shift Control Module Backup Power Supply Component Internal Failure [10/2023 - ] >> Description
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DTC P1779-96: Gear Shift Control Module Backup Power Supply Component Internal Failure [10/2023 - ]: Description

The integration control supply backs up the electronic shift lever system is used to prevent vehicle roll-away when supply power from the auxiliary battery is lost.

The integrated capacitor starts based on the IG (ON) signal.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate
P1779-96 Gear Shift Control Module Backup Power Supply Component Internal Failure An external malfunction is detected by the integrated capacitor
(1 trip detection logic)
  • Integration control supply
  • Shift control ECU
  • Wire harness or connector
  • Master Warning Light
    • Does not come on
  • Multi-information Display Error Message
    • Displayed