Scantool Diagnostics

Smart Key Unit
B1978 Electric Steering Column Lock Failure - Scantool Diagnostics

Monitor GDS data

Check DTC status
1. Check DTC on PDM side with GDS.
2. Check that there is any DTC on PDM side or ESCL side.
3. Inspect DTC related ESCL first if there is any DTC on the PDM side according to DTC troubleshooting guide.
4. After inspetion and repair, erase DTC related ESCL.
5. Erase DTC B1971 ESCL failure on Smartkey Module side.
6. Has the DTC gone after erasing DTC with GDS?





Check current Data
1. Select current data parameters related Smartkey Module with GDS.
2. Monitor "ESCL ENABLE" and "SMK State" are normal.
3. Select current data parameter related PDM.
4. Monitor "ESCL BATTERY OUTPUT" , "ESCL GND OUTPUT" and "ESCL UNLOCK STATE INPUT" are normal.

Specification :- Current Data parameter related Smartkey Module -
1.ESCL ENABLE : It is ON, if IPM sends enable signal to ESCL
2.SMK State : It shows ESCL current status. It shows ESCL FAULURE if there is a failure





Specification :- Current Data parameter related PDM -
1.ESCL BATTERY OUTPUT : It will be changed form OFF to ON when PDM supplies operation voltage with PDM.
2.ESCL GND OUTPUT : It will be changed form OFF to ON when PDM supplies operation voltage with PDM.
3.ESCL UNLOCK STATE INPUT : In case that ESCL bolts is unlock, it will be ON.




5. Are all parameters related ESCL funtioning normally ?