LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 1990 >> LS 400 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> Testing >> Back-Up Power Source Circuit >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Back-Up Power Source Circuit: Notes

Cruise control ECU back-up power source circuit provides power even when ignition switch is Off and is used for diagnostic code memory. DOME fuse in engine compartment fuse/relay block provides power to back-up power source circuit