Страница 1 мировой engineering стандарты общая спецификация

B2.1 Disable All System Outputs. 
A scan tool implementation of this device control allows the user to
deactivate all output devices of an ECU simultaneously or, if this is not possible, freeze the output(s) at its
(their) current value. This prevents random behavior or periodic switching of loads during a current
measurement. Upon receipt of this device control, the ECU shall verify that none of the device control limits are
exceeded.
When this device control is active, all device controls assigned in other CPIDs for that ECU can be
activated/deactivated independently by the other CPID (overrides CPID $FD for that output).
This device control will only be allowed if all the following are TRUE:
1. Vehicle Speed = 0.
2. Engine is not running.
A TesterPresent ($3E) message is required to keep this device control active.
B2.2 ECU Reset. 
Implementation of this device control allows a tool user to force the ECU to restart the
application program (soft reset). Previously learned configuration data, adaptive factors, and other long-term
adjustments shall not be reinitialized. The actual performed action is implementation specific.
This device control will only be allowed if all the following are TRUE:
1. Vehicle Speed = 0.
2. Engine is not running.
The ECU must respond to the request prior to performing the reset.
B2.3 Learned Source ID Reset. 
Implementation of this device control allows a tool user to force the ECU
relearn of all previously learned Source IDs. This is accomplished by resetting the learned Source IDs as
follows:
•
Required messages that are always guaranteed to be present in the system shall be associated with
Source ID $FF.
•
Optional messages whose presence is determined by the presence of a build option shall be associated
with Source ID $FE.
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