Diagnostic Test

CHECK FOR A DTC U1601-MISSING APPLICATION FILE
NOTE: This DTC must be active for the results of this test to be valid. Check for a loose scan tool connection. Verify that battery charger is installed and charge rate provides approximately 13.5 volts.
1. Turn the ignition on.
2. Connect scan tool, read DTCs.
3. Follow reprogramming procedure and reflash the module while maintaining voltage as noted above.
4. Perform ECU initialization with drive test on ABM. Refer to ABS VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Antilock Brake (ABS) - Standard Procedure .
5. With the scan tool, read DTCs.
  Does the scan tool display: U1601-MISSING APPLICATION FILE?
  
  Yes
  - Replace the Anti-Lock Brake Module in accordance with the Service Information.
  - Perform ABS VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Antilock Brake (ABS) - Standard Procedure
  No
  - Repair complete.