U1601

U1601-00-ECU APPLICATION SOFTWARE CODE 1 MISSING OR CORRUPTED

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation
The Integrated Trailer Brake Module (ITBM) requires communication over the CAN C bus to function properly.
- When Monitored:
Continuously, with the ignition on.

- Set Condition:
When the Integrated Trailer Brake Module (ITBM) detects that its software has been corrupted or is missing.





CHECK FOR DTC U1601-00-ECU APPLICATION SOFTWARE CODE 1 MISSING OR CORRUPTED

NOTE: This DTC must be active for the results of this test to be valid. Check for a loose scan tool connection. Verify battery charger is installed and charge rate provides approximately 13.5 volts.

1. Ignition on, engine off.
2. With the scan tool, read the DTCs.
3. With the scan tool, follow the reprogramming procedure and reflash the Integrated Trailer Brake Module (ITBM) while maintaining voltage as noted above.
4. With the scan tool, read the DTCs.

Does the scan tool display: U1601-ECU APPLICATION SOFTWARE CODE 1 MISSING OR CORRUPTED?

Yes

- Replace the Integrated Trailer Brake Module (ITBM).
- Perform the ITBM VERIFICATION TEST. ITBM Verification Test.

No

- The condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
- Perform the ITBM VERIFICATION TEST. ITBM Verification Test.