Volvo D13, Installation Manual

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Power-down sequence
In the standard configuration, where 'Ignition off stops
engine' is set to FALSE, the engine must be stopped
before Ignition off will start the power-down sequence.
If the 'Ignition off stops engine' option is selected, and
the ignition is turned off, the engine will be stopped and
then the system will initiate power down.
EMS power down
The EMS has a main relay self-hold function to ensure
that data is stored correctly in the memory before it
powers down.
The duration of the EMS power-down sequence is up
to 10 seconds. Do not switch off the battery until this
sequence is done.
Bus interface
Associated input:
OEM interface connector pin 5 – ignition.
Associated signals:
BB1 : Rx: VP71 'Engine power down ack'
Engine control interface, Power-down sequence
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