Eaton Fuller Advantage (2017) Fault Code: 22 PID: SID 254 SPN: FMI: 14 ABS CAN Message: Special Instructions

Overview:
The Fuller Advantage transmission is equipped with Hill Start Aid (HSA) which prevents roll-back and roll-forward while launching on grades that are 1% and greater. The HSA holds for 3 seconds using vehicle foundation wheel brakes. The Transmission Electronic Control Unit (TECU) and ABS Module communicate over the J1939 Data Link and control the HSA function. Fault Code 22 sets if the TECU loses communication with the ABS or the ABS communicates that the HSA is not available.

Detection:
The TECU communicates with the ABS module over the J1939 Data Link. If communication is lost with the ABS module or the ABS module broadcasts a message indicating HSA is not available, this fault sets Active.

Conditions to Set Fault Code Active:
FMI 14 – Special Instructions: TECU receives a message from the ABS Module, over the J1939 Data Link, that the HSA function is not available.

Fallback:
All FMIs
• Hill Start Aid is inoperative.

Conditions to Set Fault Code Inactive:
All FMIs: TECU establishes communication with the ABS module and the ABS module communicates that HSA is available.

Possible Causes:
FMI 14
1) ABS System
– ABS component or system fault code
– ABS module does not support or is not configured for HSA
– ABS module internal failure
2) HSA Disable Switch
– Bent, spread, corroded or loose terminals
– Wiring shorted to ground, shorted to power or open
– Internal failure