LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2004 >> SC 430 >> Repair and Diagnosis >> Engine Performance >> System >> SFI System - Diagnosis >> Diagnosis System >> Normal Mode And Check Mode
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Normal Mode And Check Mode

Fig 1: Identifying DLC3 Terminal (1 Of 2)
G01447348Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

The diagnosis system operates in Normal Mode during normal vehicle use. In Normal Mode, "2-trip detection logic" is used to ensure accurate detection of malfunctions. A Check Mode, is also available to technicians as an option. In Check Mode, "1-trip detection logic" is used for simulating malfunction symptoms and increasing the system's ability to detect malfunctions, including intermittent malfunctions.