Diagnostic Test

ACTIVE DTC
1. Ignition on, engine not running.
2. With a scan tool, select View DTCs.
  Is the status Active for this DTC?
  
  Yes
  - Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Diagnosis and Testing and perform the U0121-Lost Communication with Anti-Lock Brake Module diagnostic procedure.
  No
  - Perform the CHECKING FOR AN INTERMITTENT DTC diagnostic procedure. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .