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Home >> Lexus >> 2002 >> SC 430 >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Power Door Lock Control System - Diagnosis >> Automatic Locking Function By Vehicles Speed Does Not Work >> Circuit Description

Circuit Description

Theft deterrent ECU monitors a signal of vehicle's speed transmitted multiply from the meter ECU, and it will drive each door lock motor when any of the doors is in the unlocking state with the vehicle's speed, approximately 13 MPH (20km/h).

NOTE: Electrical door lock system has a function with a large-scale body multiplex communication. First of all, inspect the communication function and check that no malfunction exists in the trouble shooting.
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