[S/W Management] Solution for ABS/ESP/EBD Variant Coding Failure (For Vehicles Equipped with CCU)

✅ Issue Overview

• Target: Vehicles equipped with a gateway (CCU) where all ABS/ESP Variant Coding test conditions are met, but persistent failures occur
• : Cases where all ABS/ESP Variant Coding test conditions are met, but failures continue to occur

• 

• Characteristics
  • When the ABS/ESP controller has been replaced with a new one (with the same part number as the previous controller),
  • May occur if the vehicle’s CCU misinterprets GPS (Navi)-based date information.
  • Negative response due to certificate expiry or time mismatch.

🔍 Cause Analysis

• Gateway (CCU) Communication and Authentication Logic Issues
  • When the vehicle’s navigation-based GPS location/date is recognised as being in the future, certificate verification may fail.
• Security Certificate Status
  • Check the and CRL
• Environmental Conditions
  • When working indoors, GPS cannot be updated → Increased possibility of Variant Coding failure.

🛠 Countermeasures

1. On-site Actions

• Retry after re-login: If the security certificate has expired, please attempt to log in again to renew the security certificate.
• Update the vehicle's GPS: Move the vehicle outside and update the GPS information and time zone to match the local time.
• Check tablet time zone: Please refer to the link 
  https://support.gitauto.com/hc/en-gb/articles/54047285143705 and set to the local time zone.

2. Request Technical Action (Please contact the Customer Support Team for this action.)Check security certificates: 
Delete the certificate (.bat) files in the nvci/xml/hy path and redistribute them.