XT2500 Product Manual
Page 71 | 92
CONFIDENTIAL AND PROPRIETARY
5.3.7. OBD Run States Bits
Bit
State
0
Engine Running
1
PTO On
2
Moving
3
Ignition On
5.3.8. OBD Comms State
Value
Description
0
OBD comms off
1
OBD comms pending (ECU detected, initiating connection)
2
OBD comms connected (waiting for RPM change or vehicle motion)
3
OBD comms active
5.3.9. OBD Backoff Mode
Value
Description
0
OBD not in Backoff
1
OBD Backoff Scantool Detect
2
OBD Backoff MIL Detect
3
OBD Backoff MIL Persisted
4
OBD Backoff Protocol Fail Detect
5
OBD Backoff Scantool Detect until Ignition Off
5.3.10. OBD Protocol Table
Value (Hex)
Description
0x0001
ISO 9141-2 (Keyword Byte 08 08)
0x0002
ISO 9141-2 (Keyword Byte 94 94)
0x0004
ISO14230 (KWP2000) (5-Baud init)
0x0008
ISO14230 (KWP2000) (Fast init)
0x0010
J1850 PWM (typically older Ford vehicles)
0x0020
J1850 VPW (typically older GM vehicles and some older Chrysler and Toyota)
0x0040
J1708/J1587
0x0080
CAN protocol 11-bit CAN ids
0x0100
J1939
0x0200
CAN protocol 29-bit CAN ids