Vehicle Interlock Issue when Requesting OBD2 Data
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Vehicle Interlock Issue when Requesting OBD2 Data
Hello,
I am using PCAN explorer to request vehicle data from the OBD2 port on e-series Ford van. The van is communicating as expected with the request/reply message style communication. However whenever I send a request for data the van goes into a parking interlock and not able to shift into drive. I would like to query data as the vehicle is driving. Here are 2 message transaction logs for speed requests. Please note the very last message as this is what I am trying to understand. It seem this message is allowing the vehicle to come out of the parking interlock after I stop sending the speed request.
Log 1
can0 7DF [8] 02 01 0D 00 00 00 00 00
can0 7E8 [8] 03 41 0D 00 00 00 00 00
can0 7DF [8] 02 01 0D 00 00 00 00 00
can0 7E8 [8] 03 41 0D 00 00 00 00 00
can0 7DF [8] 02 01 0D 00 00 00 00 00
can0 7E8 [8] 03 41 0D 00 00 00 00 00
can0 7DF [8] 02 01 0D 00 00 00 00 00
can0 7E8 [8] 03 41 0D 00 00 00 00 00
can0 7E8 [8] 06 50 03 00 32 01 F4 00
can0 7E8 [8] 05 67 03 21 3F 09 00 00
can0 7E8 [8] 02 67 04 00 00 00 00 00
Log 2
can0 7DF [8] 02 01 0D 00 00 00 00 00
can0 7E8 [8] 03 41 0D 00 00 00 00 00
can0 7DF [8] 02 01 0D 00 00 00 00 00
can0 7E8 [8] 03 41 0D 00 00 00 00 00
can0 7DF [8] 02 01 0D 00 00 00 00 00
can0 7E8 [8] 03 41 0D 00 00 00 00 00
can0 7DF [8] 02 01 0D 00 00 00 00 00
can0 7E8 [8] 03 41 0D 00 00 00 00 00
can0 7DF [8] 02 01 0D 00 00 00 00 00
can0 7E8 [8] 03 41 0D 00 00 00 00 00
can0 7E8 [8] 06 50 03 00 32 01 F4 00
can0 7E8 [8] 05 67 03 28 04 00 00 00
can0 7E8 [8] 02 67 04 00 00 00 00 00
I am using PCAN explorer to request vehicle data from the OBD2 port on e-series Ford van. The van is communicating as expected with the request/reply message style communication. However whenever I send a request for data the van goes into a parking interlock and not able to shift into drive. I would like to query data as the vehicle is driving. Here are 2 message transaction logs for speed requests. Please note the very last message as this is what I am trying to understand. It seem this message is allowing the vehicle to come out of the parking interlock after I stop sending the speed request.
Log 1
can0 7DF [8] 02 01 0D 00 00 00 00 00
can0 7E8 [8] 03 41 0D 00 00 00 00 00
can0 7DF [8] 02 01 0D 00 00 00 00 00
can0 7E8 [8] 03 41 0D 00 00 00 00 00
can0 7DF [8] 02 01 0D 00 00 00 00 00
can0 7E8 [8] 03 41 0D 00 00 00 00 00
can0 7DF [8] 02 01 0D 00 00 00 00 00
can0 7E8 [8] 03 41 0D 00 00 00 00 00
can0 7E8 [8] 06 50 03 00 32 01 F4 00
can0 7E8 [8] 05 67 03 21 3F 09 00 00
can0 7E8 [8] 02 67 04 00 00 00 00 00
Log 2
can0 7DF [8] 02 01 0D 00 00 00 00 00
can0 7E8 [8] 03 41 0D 00 00 00 00 00
can0 7DF [8] 02 01 0D 00 00 00 00 00
can0 7E8 [8] 03 41 0D 00 00 00 00 00
can0 7DF [8] 02 01 0D 00 00 00 00 00
can0 7E8 [8] 03 41 0D 00 00 00 00 00
can0 7DF [8] 02 01 0D 00 00 00 00 00
can0 7E8 [8] 03 41 0D 00 00 00 00 00
can0 7DF [8] 02 01 0D 00 00 00 00 00
can0 7E8 [8] 03 41 0D 00 00 00 00 00
can0 7E8 [8] 06 50 03 00 32 01 F4 00
can0 7E8 [8] 05 67 03 28 04 00 00 00
can0 7E8 [8] 02 67 04 00 00 00 00 00
New User
Joined: Apr 2020
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Hi,
I actually ran into the exact same issue. I had a message when I first sent a supported PIDs request (0100) and received this:
7E8056703B87FC80000
I am guessing this is the vehicle entering parking interlock mode, and yours with the 7E80267040000000000 is when it exists the interlock state.
Service 27 (67-40) is security access, I am not sure why this vehicle is doing it as I am asking only speed/rpm. It seems part of UDS (Unified Diagnostic Services) but most information only mentions requesting access when doing more advanced things like re-writting ECU settings etc which I am not doing.
I actually ran into the exact same issue. I had a message when I first sent a supported PIDs request (0100) and received this:
7E8056703B87FC80000
I am guessing this is the vehicle entering parking interlock mode, and yours with the 7E80267040000000000 is when it exists the interlock state.
Service 27 (67-40) is security access, I am not sure why this vehicle is doing it as I am asking only speed/rpm. It seems part of UDS (Unified Diagnostic Services) but most information only mentions requesting access when doing more advanced things like re-writting ECU settings etc which I am not doing.
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New User
Joined: Feb 2020
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Hey Christian,
What I discovered was that all of the vehicles in this fleet have an Intermotive interlock system for the wheelchair ramp. This is an aftermarket device that puts the vehicle into parking lock-out when any OBD2 requests are read on the OBD2 CAN. This company also sells an integration device which then allows 3rd party OBD2 requests for diagnostic tools, withouth the vehicle lock-out issue.
What I discovered was that all of the vehicles in this fleet have an Intermotive interlock system for the wheelchair ramp. This is an aftermarket device that puts the vehicle into parking lock-out when any OBD2 requests are read on the OBD2 CAN. This company also sells an integration device which then allows 3rd party OBD2 requests for diagnostic tools, withouth the vehicle lock-out issue.
New User
Joined: Apr 2020
Posts: 2
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Thank you so much for the super quick reply, yes I believe some of the vehicles we are testing on have the same wheelchair and interlock system perhaps. So those 7E8xx67 messages were maybe responses from this interlock system.
Thanks again!
Thanks again!
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