The ELM327 will combine the header with this message to produce and send a complete message of "6C 10 F1 22 19 9a xx" where xx will be a checksum computed by the ELM327. This would instruct the ELM327 to use the header "6C 10 F1" for all future messages until instructed to change the header. For the aforementioned current gear PID the first command from hyperterminal to the ELM327 would be "AT SH 6C 10 F1". The second entry will be the message you wish to send. The first is needed to set the header that the elm327 will use to send a message. Separately, are you able to use hyperterminal to request PID data? Assuming you are accessing the OBD2 port using something akin to an ELM327 it would require 2 separate commands to the ELM327. Have you loaded the Torque Pro extended PID set? Do you get data from any of these "" PIDs? This PID (22199a) is not working for you? It is my thinking we should start there because that PID should be working for your P59 PCM. Torque Pro has an "extra PID" for current gear. To further discuss these matters the more proper thread would be the one referenced above. For others the PCM or TCCM or BCM are not programmed to respond to request it would appear. (Not of any value to us)įor some data values I have been able to craft an entry for Torque to request data. I have most often seen this to be 01=P, 02=R, 03=N, 09=D, 08=D3, 07=D2, 06=D1, however I have also seen 00 as P under certain circumstances.ĪE is a checksum only. I do not know the official name of this secondary ID parameter "0A" but you are correct that it carries the data of what the current gear selection is to be displayed by the instrument cluster.Ġ1 is the data byte. The sample you posted "68 EA 10 0A 01 AE" breaks down as this.ĮA (&EB) are the Primary ID Pair for the functional address for "Displays".ġ0 is the node address of the source of the message, in this case the PCM.ĠA is a secondary ID of the Functional address Primary ID pair of EA & EB, (Displays).
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