Overview:Fault Code 73 indicates the transmission is unable to engage the desired gear in the front box during a shift. Detection:The transmission detects this fault by attempting the same shifter action 5 times and not sensing the desired position. Fallback:This fault causes an in-place fallback. Possible Causes:1) Electric Shifter2) Yoke, Clutch, Main Shaft3) Gear Select Sensor4) Shift Block Shop Talk:Complete several shifts while the vehicle is in motion, including selections from neutral. Also allow the transmission to complete several automaticshifts. Eaton Gen 2 (AutoShift) Fault Code: 72 PID: SID 59 FMI: 7 Failed to Select Rail Eaton Gen 2 (AutoShift)...

Overview:Fault Code 73 indicates the transmission is unable to engage the desired gear in the front box during a shift. Detection:The transmission detects this fault by attempting the same shifter action 5 times and not sensing the desired position. Fallback:This fault causes an in-place fallback. Possible Causes:1) Electric Shifter2) Yoke, Clutch, Main Shaft3) Gear Select Sensor4) Shift Block Shop Talk:Complete several shifts while the vehicle is in motion, including selections from neutral. Also allow the transmission to complete several automaticshifts. Eaton Gen 2 (AutoShift) Fault Code: 72 PID: SID 59 FMI: 7 Failed to Select Rail Eaton Gen 2 (AutoShift)...

Overview:Fault Code 74 indicates the transmission is unable to use system controls to synchronize during a shift. Detection:If there is engine communication on the J1939 Link and the engine does not respond to transmission speed and torque commands, sets the code. Failure of the Inertia Brake system to slow the Input Shaft also sets the code. Fallback:If the failure occurs while moving, it could cause a 1-speed fallback. Once the vehicle is stopped, starting gear and reverse gear can be engaged. If the Inertia Brake system failed, it may be difficult to engage a gear from a stop if the...

Overview:Fault Code 74 indicates the transmission is unable to use system controls to synchronize during a shift. Detection:If there is engine communication on the J1939 Link and the engine does not respond to transmission speed and torque commands, sets the code. Failure of the Inertia Brake system to slow the Input Shaft also sets the code. Fallback:If the failure occurs while moving, it could cause a 1-speed fallback. Once the vehicle is stopped, starting gear and reverse gear can be engaged. If the Inertia Brake system failed, it may be difficult to engage a gear from a stop if the...

Overview:Fault Code 74 indicates the transmission is unable to use system controls to synchronize during a shift. Detection:If there is engine communication on the J1939 Link and the engine does not respond to transmission speed and torque commands, sets the code. Failure of the Inertia Brake system to slow the Input Shaft also sets the code. Fallback:If the failure occurs while moving, it could cause a 1-speed fallback. Once the vehicle is stopped, starting gear and reverse gear can be engaged. If the Inertia Brake system failed, it may be difficult to engage a gear from a stop if the...