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Home >> Pontiac >> 2001 >> Aztek Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics >> Diagnostic Tests >> DTC P1626: Theft Deterrent Fuel Enable Signal Lost >> 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. Check if DTC P1631 is also set. If DTC P1631 is set, go to DTC P1631 . If DTC P1631 is not set, go to next step.
  3. Replace PCM. Perform PCM relearn procedure. See POWERTRAIN CONTROL MODULE  under PROGRAMMING. After replacing PCM, go to next step.
  4. Using scan tool, review and record FAIL RECORDS data. Clear DTCs. Attempt to start engine. If engine starts and continues to run, system is okay. If engine does not start, go to step  2.
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