Operation CHARM: Car repair manuals for everyone.
Home >> Lexus >> 1999 >> LS 400 V8-4.0L (1UZ-FE) >> Repair and Diagnosis >> Steering and Suspension >> Steering >> Steering Column >> Steering Column Control Module >> Description and Operation >> ECU Power Source Circuit
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

ECU Power Source Circuit

CIRCUIT DESCRIPTION
The ECU power source supplies power to the CPU and sensors, etc. Power is supplied to the ECU even when the ignition switch is lock position.
pro multis · About Operation CHARM