Diesel Exhaust Over-Temperature
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
The diesel exhaust over-temperature warning chime informs the driver that an exhaust over-temperature condition exists due to a powertrain fault. The diesel exhaust over-temperature chime sounds five 0.25 second chime tones through the front speakers.
The IPC receives the diesel exhaust over-temp message from the GWM over the HS-CAN3.
The GWM receives the diesel exhaust over-temp message from the PCM over the HS-CAN1.
When a chime request is received, the IPC sends the IPC chime request message to the ACM or the audio DSP to sound the chime.