Lexus LX - Page 354

STEERING LOCK SYSTEM > PROBLEM SYMPTOMS TABLE
for Preparation Click here
HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes
of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking
the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Steering Lock System
Symptom Suspected Area
See
page
Steering wheel cannot unlock (engine cannot start).
Steering lock actuator
assembly (Steering lock
ECU)
Click
here
Main body ECU
Click
here
Certification ECU (Smart
key ECU assembly)
Click
here
Entry and start system (for
start function)
Click
here
Steering lock motor drive
power circuit
Click
here
Unlock position sensor
signal circuit
Click
here
Steering wheel cannot unlock (after connecting the intelligent tester to DLC3, starting engine, Data List steering
lock system item Lock/Unlock Receive data is read, and steering lock command reception record display is NO).
Main body ECU
Click
here
Certification ECU (Smart
key ECU assembly)
Click
here
ID code box (Immobiliser
code ECU)
Click
here
LIN communication line
Click
here
Entry and start system (for
start function)
Click
here
Steering wheel cannot lock.
Steering lock actuator
assembly (Steering lock
ECU)
Click
here
Main body ECU
Click
here
Certification ECU (Smart
key ECU assembly)
Click
here
Entry and start system (for
start function)
Click
here
Steering lock motor drive
power circuit
Click
here
Power source circuit
Click
here
Steering wheel cannot lock (after connecting the intelligent tester to DLC3, starting engine, Data List steering lock
system item Lock/Unlock Receive data is read, and steering lock command reception record display is NO).
Main body ECU
Click
here
Certification ECU (Smart
key ECU assembly)
Click
here
ID code box (Immobiliser
code ECU)
Click
here
LIN communication line
Click
here
Entry and start system (for
start function)
Click
here