General Information

Component Location





General Description

ESCL (Electronic Steering Column Lock) is a system to control the lock or unlock of the Steering Column.
It is installed on steering column and Smart Key Module is located inside of instrument panel, left knee of driver side.
It consists of ESCL control Module, Smart Key Module, PDM and SSB (engine Start Stop Button)
It is operating as follows
1.Pushing SSB -> 2. Switch 1 signal goes to PDM, Switch 2 signal goes to Smart Key Module -> 3.PDM supplies power supply to ESCL -> 4.SMART KEY Module sends ENABLE signal and operation signal to ESCL -> 5.ESCL controls bolt to lock or unlock ESCL -> 6.PDM detects ESCL Unlock signal.

DTC Description

Smart Key Module receives ESCL lock or unlock status signal from ESCL and PDM (via CAN). And then, Smart Key Module compares PDM is lock or unlock signal with ESCL is lock or unlock signal.
If the both signals are unlatching, Smart Key Module sets DTC B1971.

DTC Detecting Condition





Diagnostic Circuit Diagram