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Home › Pontiac › 2001 › Aztek Base, AWD › Repair and Diagnosis › Engine Performance › System › Engine Controls Self-Diagnostics › Diagnostic Tests › DTC P0602: Pcm Not Programmed ("U" Series) › Diagnostic Procedures

Diagnostic Procedures

  1. Perform powertrain diagnostic system check. See POWERTRAIN DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM. After performing diagnostic system check, go to next step.
  2. Program PCM with correct software. See POWERTRAIN CONTROL MODULE  under PROGRAMMING. Recheck DTCs. If DTC resets, go to next step. If DTC does not reset, system is okay.
  3. Replace PCM. Perform PCM relearn procedure. See POWERTRAIN CONTROL MODULE  under PROGRAMMING. After replacing PCM, go to step  1.
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