General Specification Electrical Function gmw3110 General Motors Local Area Network Enhanced Diagnostic Test Mode Specification

7.2.5 InvalidKey ($35, RC_IK). 
This response code indicates that security access has not been given by the 
ECU because the key sent by the tester did not match with the key in the server
’s (ECU’s) memory. This 
counts as an attempt to gain security. The ECU shall remain locked! 
Example:
The ECU shall send this response code in case the tester has sent a securityAccess request 
message with the sendKey and Key parameter where the key value does not match the key value stored in the 
server
’s (ECU’s) memory. The ECU shall increment its internal securityAccessFailed counter. 
7.2.6 ExceedNumberOfAttempts ($36, RC_ENOA). 
This response code indicates that the requested action 
will not be taken because the tester has unsuccessfully attempted to gain security access more times than the 
server
’s (ECU’s) security strategy will allow. Refer to message description of the securityAccess service 
definition. 
Example:
The ECU shall send this response code in case the tester has sent a securityAccess request 
message with the sendKey and Key parameter where the key value does not match the key value stored in the 
ECU
’s memory and the number of attempts (securityAccessFailed counter value) have reached the ECU’s 
securityAccessFailed calibration value. 
7.2.7 RequiredTimeDelayNotExpired ($37, RC_RTDNE). 
This response code indicates that the requested 
action will not be taken because the tester
’s latest attempt to gain security access was initiated before the 
ECUs required timeout period had elapsed. 
Example:
An invalid Key requires the tester to start over from the beginning with a securityAccess service. If 
the security protection algorithm is not passed after 
X
failed attempts (
X
= specified in the ECU
’s memory), all 
additional attempts are rejected for at least