B&B Electronics LDVDSV2-S-P9D - Manual - Manual (Page 44)

OBDII Streamer Command & Response
V2.11
Page 44/49
0xA3 – Ignition/OBDII Status
Command Byte: 0xA3
Description:
This message will be returned when the status of the vehicle ignition and the secondary
OBDII tool status changes. The format of this message is the same as found in the
Ignition Status command.
Response:
0x01 0x01 0xA3 0x02 IGNITION OBDII_STAT CS
Field Description:
IGNITION
This is a 1 byte field that indicates the status of the vehicle
ignition.
0x00 = Ignition OFF
0x01 = Ignition ON
The method used to determine the ignition status detects when the
OBDII bus is responding to requests and when the RPM is not
zero.
The ignition will transition from off to on when vehicle or engine
speed is not zero.
It is possible that some vehicles will continue to respond while the
ignition is off. All vehicles are required to communicate when the
key is in the on position and the engine is not running.
OBDII_STAT
This is a 1 byte field that indicates if a second scan tool is
connected to the OBDII port.
0x00 = No Tool
0x01 = Tool Connected
CS
Summation checksum
Example:
RX:
0x01 0x01 0xA3 0x02 0x01 0x00 0xA8
This message indicates that the ignition is on and no secondary tool is connected.