Fault Code 205: TCM Operation 2
J1939: SA 3 SPN 609 FMI 9, 12, 19
Overview
The Endurant XD Transmission is equipped with a Transmission Control Module (TCM). The TCM communicates with other vehicle Electronic Control Units (ECUs), receives feedback from sensors and actuates solenoids to control transmission operation. The TCM is mounted to the transmission and connected to the 20-Way TCM Vehicle Harness Connector and 20-Way TCM Body Harness Connector. The TCM is connected to the transmission sensors and solenoids at the 74-Way Transmission Harness Connector.
Detection
The TCM performs a self-check during operation. If a failure is detected, the fault is set Active.
Conditions to Set Fault Code Active
FMI 9 – Abnormal Update Rate: TCM has detected an internal processing error.
FMI 12 – Bad Intelligent Device: TCM has detected an internal processing error.
FMI 19 – Received Network Data in Error: TCM has detected an internal processing error.
Fallback
FMI 9, 12, 19:
- Amber warning lamp on
- No degraded modes
Conditions to Set Fault Code Inactive
FMI 9, 12, 19: Key cycle and fault condition no longer exist
Possible Causes
All FMIs:
- TCM
- Software issue
- Internal failure
Additional Tools
- Endurant XD Service Manual TRSM0960
Fault Code 205 Troubleshooting
Set vehicle parking brake and chock wheels.
Record transmission fault codes, FMIs, occurrences, and timestamps from Service Activity Report created during the Diagnostic Procedure.
If fault code 205 is Inactive and there are other Active vehicle or transmission fault codes, troubleshoot all Active fault codes first. Go to Step V
If Fault Code 205 FMI 9, 12, 19 is Active or Inactive, Go to Step B
Key off.
Allow TCM to perform a complete power down.
Key on with engine off.
Connect ServiceRanger.
Go to “Programming”.
Under "Software Information", record TCM software in table.
If the TCM was updated to the latest available software during the Diagnostic Procedure,Go to Step V
If a TCM software update is available, update TCM software. Go to Step V
If the TCM was not updated during the Diagnostic Procedure and is at the latest available software, replace Transmission Control Module (TCM). Go to Step V
| TCM Software |
|---|
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 205 sets Active, Go to Step A
If a fault code other than 205 sets Active, troubleshoot per the Fault Code Isolation Procedure Index.