Steering Lock System
STEERING COLUMN: STEERING LOCK SYSTEM: DATA LIST / ACTIVE TEST
1. READ DATA LIST
HINT
Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.
NOTICE:
In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.
(a) Turn the engine switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG).
(d) Turn the Techstream on.
(e) Enter the following menus: Body Electrical / (desired system) / Data List.
(f) According to the display on the Techstream, read the Data List.
(g) Using the Techstream, confirm the Data List items to help determine the cause of the problem.
NOTICE:
* The steering lock ECU communicates with the Techstream through the certification ECU which uses CAN communication. If the CAN communication system or certification ECU is malfunctioning, Data List items may not be normal.
* When using the Techstream with the engine switch off, perform either of the following: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins, or 2) connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus: Body Electrical / Smart Access / Data List.
Power Source Control
Smart Access
HINT
Unlock operation conditions for the steering lock:
When the following condition is met, the unlock operation is performed:
The engine switch is on (ACC) or on (IG).
* When the engine switch is turned on (ACC) or on (IG) and the key and certification ECU are verified, the steering is unlocked.
When any of the following conditions are met, key verification is performed.
* The brake pedal is depressed so that the engine can be started.
* 30 seconds elapse after opening and closing a door.
* The engine switch is pressed.
Key verification occurs when the code emitted from the key and the code stored in the certification ECU are compared to check that they match.
Certification ECU verification occurs when the S code and L code are verified while the engine is being started or the engine switch is being pushed. The ID code box uses the S code to determine whether the certification ECU is authorized. The steering lock ECU uses the L code to determine whether the ID code box is authorized.
Lock operation conditions for the steering:
When the following conditions are met and the certification ECU has been verified, the lock operation is performed.
* The engine switch is off.
* The shift lever is in P.
* A door is opened or a door lock operation (smart door lock, wireless door lock or key-linked lock) is performed.
HINT
The following example shows the behavior of various Data List items when the shift lever is in P, the brake pedal is not depressed, the vehicle is normal and the power source mode changes.
HINT
Get into the vehicle while carrying the key. With the engine switch off, the shift lever in P and all the doors closed, perform the following procedures and check the power source mode.
*1: Without depressing the brake pedal, press the engine switch and check that the power source mode turns on (ACC).
*2: Without depressing the brake pedal, press the engine switch and check that the power source mode turns on (IG).
*3: Press the engine switch and check that the power source mode turns off.
*4: Release the brake pedal, open the driver side door and check that the steering locks.
Main Body
