Fault Code 148: Performance Goal Calibrations
J1939: SA 3 SPN 630 FMI 13, 14, 31
Overview
The Endurant HD transmission incorporates enhanced controls that allow the driver to select a different transmission performance mode to suit vehicle operating conditions.
The Transmission Control Module (TCM) can be configured with two selectable performance modes, a Primary and a Secondary, each providing different launch characteristics and shift strategies for improved performance in specific driving conditions, on and off highway. Reference Endurant HD Driver Instructions TRDR0955 for Secondary Configuration Mode operation.
Detection
The TCM monitors the Primary and Secondary performance mode configuration. If the configuration is invalid, the fault is set Active.
Conditions to Set Fault Code Active
FMI 13 - Out of Calibration: TCM invalid calibration.
FMI 14 - Special Instructions: TCM invalid calibration.
FMI 31 - Condition Exists: TCM invalid calibration.
Fallback
FMI 13, 14, 31:
- Amber warning lamp on
- Coast Mode and Neutral Coast prohibited
- Upshifts prohibited
- High start gears prohibited
Conditions to Set Fault Code Inactive
FMI 13, 14, 31: Key cycle and fault condition no longer exists.
Possible Causes
FMI 13, 14, 31:
- TCM
- Software issue
- Internal failure
Additional Tools
- Endurant HD Service Manual TRSM0950
Fault Code 148 Troubleshooting
Set vehicle parking brake and chock wheels.
Record the transmission fault codes, FMIs, occurrences, and timestamps from the Service Activity Report created during the Diagnostic Procedure.
If Fault Code 148 is Inactive and there are other Active vehicle or transmission fault codes, troubleshoot all Active fault codes. Go to Step V
If Fault Code 148 FMI 13, 14, 31 is Active, Contact Eaton Cummins Automated Transmission Technologies for further diagnostic instructions. For Help Line phone numbers, go to Contact Information. Go to Step V.
Key off.
Reconnect all connectors and verify all components are properly installed.
Key on with engine off.
Connect ServiceRanger.
Go to “Fault Codes”.
Select “Clear All Faults”.
Operate vehicle and attempt to reset the fault code or duplicate the previous complaint.
Check for fault codes using ServiceRanger.
If no fault codes set and vehicle operates properly, test complete.
If Fault Code 148 sets Active, Go to Step A
If a fault code other than 148 sets Active, troubleshoot per Fault Code Isolation Procedure Index.