I mean negative response codes. Not negative values. Services can report that they are not supported, not ready, response pending, etc.
The negative response Service is $7F.
So for example if a scan tool is requesting say the CVN (Sevice 0x09, InfoType 0x06.) The vehicle could respond something ...
Search found 2 matches
- Fri Jan 09, 2015 4:35 am
- Forum: Freematics Products
- Topic: Negative Response Codes
- Replies: 2
- Views: 8462
- Thu Dec 11, 2014 6:24 am
- Forum: Freematics Products
- Topic: Negative Response Codes
- Replies: 2
- Views: 8462
Negative Response Codes
Is it possible to return negative response codes (ISO-1420, CAN) with the stock software/firmware or would we need to modify it?