Qualcomm OBDII J1708 Instrukcja Naprawy Pobierz pdf (Strona 55)

80-JB566-1 Rev. C 18-1

MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION

J1587 Packet Detection Problem

Problem: J1587 Packet Detection Fails

Ignition must be ON for the truck to broadcast/supply vehicle data.

Note

If the Core Data Items test passes (i.e. green check), it’s acceptable for the J1587 Packet

Detection test to fail. It would mean that the MCP50 system is getting its vehicle data from

the J1939 link.

In order to get J1587 data, a truck’s engine must be supplying the J1587 data, a connection

must be made to the J1587 wires (Power/IO cable), and the unit must be configured to look

for the J1587 data. Many new trucks/engines do not transmit J1587 packets.

If packets are not detected, check the connections to the J1587 data link and verify that it is

properly configured.

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Qualcomm OBDII J1708 Instrukcja Naprawy Strona 55