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Home >> Lexus >> 2021 >> LS 500 Base, AWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System - Diagnostic Codes (13 Of 14) >> SFI System >> DTC P2533-14: Ignition Switch On/Start Position Circuit Low Circuit Short to Ground or Open [10/2023 - ] >> Description
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DTC P2533-14: Ignition Switch On/Start Position Circuit Low Circuit Short to Ground or Open [10/2023 - ]: Description

When the engine switch is turned on (IG), the battery power source is supplied to the IGP and IGR terminals of the ECM. When the engine switch is off, the battery power source is cut off.

When the engine switch is turned off during driving, the battery power source supplied to the IGP terminal is cut off. However, the battery power source supplied to the IGR terminal is supplied until the vehicle is stopped and the engine switch is turned off.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P2533-14 Ignition Switch On/Start Position Circuit Low Circuit Short to Ground or Open Short to ground or open in IGR terminal circuit (2 trip detection logic).
  • IGR NO. 2 relay (instrument panel junction block assembly)
  • Wire harness or connector
  • ECM
- DTC stored SAE: P2534