Страница 1 мировой engineering стандарты общая спецификация

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GM WORLDWIDE ENGINEERING STANDARDS
GMW3110
Procedure 6: 
This procedure is to be performed when the MEC = $00 and the vulnerability_flag (if supported)
not equal to $FF.
1. Send a valid security access request message $03 and verify $67 $03 $seedMsb $seedLsb response.
2. After step 1 is complete, send a security access request message with level $04 and an incorrect key.
Verify $7F $27 $35 response.
3. Repeat step 1 and 2 of this procedure and verify that the response from step 2 (the second level $04
message) changes to $7F $27 $36. Then send a request for this service with $Level = $03 within 10 s and
verify $7F $27 $37 message.
4. After performing steps 1 through 3 of this procedure, verify that the service device control restrictions
remain active. This can be done by sending a device control command that is valid for the assembly plant
restrictions but invalid for service restrictions and verifying the correct $7F $AE $E3 $xx $yy negative
response message.
8.8.8 Tester Implications. 
This test mode will be terminated if a $3E message is not received every P3
C 
ms.
Upon a Mode $3E time-out, the node shall lock itself (also revert back to service device control restrictions if
applicable).
An invalid key requires the external tester to start over from the beginning with a mode $27 (level 1) request
message. This is a requirement of SAE J2186. The tester cannot send a key to a secured device without first

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requesting the seed.