Страница 1 мировой engineering стандарты общая спецификация

Page 191
GM WORLDWIDE ENGINEERING STANDARDS
GMW3110
/* This level shall be supported by all ECUs on the low speed link */
/* This level shall not be supported by ECUs on the two wire links and
shall result in a negative response $7F $A5 $12 if sent */
/*check if high speed programming mode is ok and $28 service is active*/
/*$28 service disables setting DTCs and inhibits normal communication*/
IF ( (device cannot enter high speed programming mode)OR
(normal_message_transmission_status = ENABLED)) THEN
send Negative Response ($7F $A5 $22) /* Conditions Not Correct */
ELSE
IF (device temporarily cannot enter programming mode)
send Negative Response ($7F $A5 $78) /* RequestCorrectlyReceived-ResponsePending */
ENDIF
programming_mode_entry_OK ←
YES
high_speed_mode_entry_OK ←
YES
send Positive Response ($E5)
ENDIF
WHEN ($Level = LEV_EPM) /* ($03) Enable Programming */
/* verify that a previous request was sent with $Level = LEV_RQPM or */
/* $Level = LEV_RQPM_HS */
IF (programming_mode_entry_OK = NO) THEN
send Negative Response ($7F $A5 $22) /* ConditionsNotCorrect */
ELSE
IF (high_speed_mode_entry_OK = YES) THEN
CALL hnd_Invoke_High_Spd_Mode() /* handler function */
high_speed_mode_active ←
YES
ENDIF
programming_mode_active ←
YES
ENDIF
OTHERWISE
send Negative Response ($7F $A5 $12) /* Invalid Format */
IF ((programming_mode_entry_OK = YES) AND
(programming_mode_active = NO)) THEN
programming_mode_entry_OK ←
NO
high_speed_mode_entry_OK ←
NO

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WORLDWIDE ENGINEERING STANDARDS General Motors Local Area Network Enhanced Diagnostic Test Mode Specification
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February 2010
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ENDIF
ENDSELECT
ENDIF
ENDFUNCTION