Eaton Gen 2 (AutoShift) Fault Code: 17 PID: SID 237 FMI: 4 Start Enable Relay Coil

Overview:
Fault Code 17 indicates an electrical failure of the relay that allows the engine to start after start-up conditions are met.

Detection:
Starting at key on and throughout operation, the Shift Controller
constantly measures the circuit. If a condition of short to battery, short to ground or open circuit is detected, Fault Code 17 is set.

Fallback:
The Start Enable Relay has no fallback; however, if the failure occurred before the engine was started, it is possible the engine will not start.

Possible Causes:
1) Relay Coil Open
2) Vehicle Harness
3) Shift Controller
4) Operator too quick on key (not waiting for a “N”)

Shop Talk:
Key on. If the fault is present, the system should automatically detect the problem and set the code. If the fault is not present at key on, operate the vehicle and attempt to duplicate the driving conditions that triggered the fault code. Possible triggers include heat and vibration.