Operation CHARM: Car repair manuals for everyone.

Verification of Vehicle Repair





Power Trunk Module

B1621 ECU Check Sum Error - Verification of Vehicle Repair

Verification of Vehicle Repair

After a repair, it is essential to verify that the fault has been corrected.
1. Connect scan tool and select "DTC Analysis" mode.
2. Clear the DTCs and Operate the vehicle within DTC Enable conditions in General information.
3. Is any DTC outputted again?