Steering Column: Description and Operation

Description of functions

1. Unlock operation conditions.
(1) Unlock operation will be performed when the following conditions are met.
(a) Key collation is complete.
(b) The vehicle is set to ACC ON or IGN ON.
(c) A genuine collation ECM is confirmed.
2. Lock operation conditions.
(1) Lock operation will be performed when the following conditions are met.
(a) The vehicle is set to IG OFF and ACC OFF.
(b) The shifter is in the P position (A/T transmission).
(c) A door changes from closed ->open, or a door is locked (smart door lock, wireless door lock).
(d) A genuine collation ECM is confirmed.
3. Indicator display function.
(1) When a malfunction that may cause poor steering lock ECM operation, an IG drive circuit malfunction, or vehicle speed information malfunction is detected, the combination meter ASSY orange indicator light identifies the malfunction by blinking.
4. The steering lock actuator ASSY (Steering lock ECM).
(1) The steering lock ECM is integrated into the steering column ASSY steering lock actuator ASSY.
(2) As the steering lock actuator ASSY (Steering lock ECM) is not connected to CAN communication, CAN communication with external parts is performed via the LIN communication-connected smart key computer ASSY (Collation ECM).