LS 430 V8-4.3L (3UZ-FE) (2002)
Step 1 - 4
INSPECTION PROCEDURE
Ignition Switch Power Source Circuit
CIRCUIT DESCRIPTION
When the ignition switch is turned to the ACC position, battery positive voltage is applied to the terminal ACC of the ECU.
Also, if the ignition switch is turned to the ON position, battery positive voltage is applied to the terminals ACC and IG of the ECU.