2017 Mustang GT350 CAN Mapping

[jhidley]

To add to the first post.

Message 118d comes from the ABS/ESC unit. If you remove the plug that allows the ABS and TC to operate, then either the entire ABS/ESC module is turned off or most of its functions are turned off. I'm not sure which. In any case, the steering angle sensor signal starts in the SCCM (Steering Column Control Module) which sends it's message through the GWM (Gateway Module) on to the ABS/ECU. The ABS/ECU module then sends the 118d message on to other modules in the car. When the dyno plug is removed, the ABS/ECU module no longer sends out the 118d message. I'm not positive which message the SCCM uses to send the steering angle values on to the ABS/ECU module. I suspect that it will be 129d byte 3-7, or 131d byte 6 and/or 7. I believe that nothing in the car uses the steer angle values directly from the SCCM because it has not been calibrated for zero yet, sort of. The ABS/ECU module probably does this by looking at the lateral acceleration and finding the zero value for the steer angle from this. This is speculation on my part, but I know that other cars use this technique and both the wiring and messaging are consistent with it.

Message 125d. This is not brake pressure. I do not think that this ABS/ECU module has internal pressure sensors. This message has requested and actual brake torque values in it.

119d. This message also comes from the ABS/ESC module. This is the message that goes to the IPC and ECU through the GWM. If the dyno jumper is removed, there may be an alternate method for the GWM to send a vehicle speed message to these modules, probably using the VSS sensor in the transmission. I'm not sure.

Oil temp will be on the second byte of message 342d. Same offsets and scalars as the cylinder head temperature.

[jhidley]

A better message to get vehicle velocity from is probably 514d, bytes 6 and 7. This should be stored in kph with a multiplier of 0.01.