Endurant HD
TRTS0950 EN-US
|
September 2024 - B

Fault Code 139: Halt Brake Mode

J1939: SA 3 SPN 2913 FMI 9, 13, 19

Overview

The Transmission Control Module (TCM) receives the vehicle’s Halt Brake Mode message from a vehicle Electronic Control Unit (ECU) over the Primary Data Link (J1939A). This information is used to determine transmission operation.

Detection

The TCM monitors Halt Brake Mode messages. If messages are not received or are invalid, the fault is set Active.

Conditions to Set Fault Code Active

FMI 9 - Abnormal Update Rate: Halt Brake Mode message not received for 5 seconds.

FMI 13 - Out of Calibration: Halt Brake Mode message not available for 5 seconds.

FMI 19: Halt Brake Mode message invalid for 5 seconds.

Fallback

All FMIs:

  • If Fault Codes 138 and 139 are Active:
    • Amber warning lamp on
    • Urge to Move and Creep Mode prohibited

      Note: Vehicle may have additional fallback modes. Refer to OEM.

Conditions to Set Fault Code Inactive

All FMIs: Halt Brake Switch messages received and valid for 10 seconds.

Possible Causes

FMI 9, 13, 19:

  • Vehicle Components
    • Halt Brake Mode message not enabled
    • Other vehicle ECU(s) faulted
  • Vehicle Harness
    • Primary Data Link (J1939A)
    • Wiring shorted to power, shorted to ground or open
    • Terminals bent, spread, corroded, or loose

      Note: Refer to OEM for troubleshooting a failed system.

Additional Tools

  • None

Fault Code 139 Troubleshooting

A
Purpose:Check for Active or Inactive fault codes.

  1. Record the transmission fault codes, FMIs, occurrences, and timestamps from the Service Activity Report created during the Diagnostic Procedure.

  • If Fault Code 139 is Inactive and there are other Active vehicle or transmission fault codes, troubleshoot all Active fault codes. Go to Step V

  • If Fault Code 139 FMI 9, 19 is Active or Inactive, refer to OEM guidelines for repair of the vehicle Halt Brake Mode message (SPN 2913). Go to Step V

  • If Fault Code 139 FMI 13 is Active, refer to OEM and enable vehicle Halt Brake Mode message (SPN 2913). Go to Step V

  • If Fault Code 139 FMI 13 is Inactive, Go to Step V

V
Purpose:Verify Repair.

  1. Key off.

  2. Reconnect all connectors and verify that all components are properly installed.

  3. Key on with engine off.

  4. Connect ServiceRanger.

  5. Go to “Fault Codes”.

  6. Select “Clear All Faults”.

  7. Operate vehicle and attempt to reset the fault code or duplicate the previous complaint.

  8. Check for fault codes using ServiceRanger.