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Home >> Saab >> 2002 >> 9-5 Arc, 4D Sedan >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Fault Code Diagnosis >> P0605: Internal Control Module - Malfunction >> Fault Isolation Procedure

Fault Isolation Procedure

  1. Changing components: Change ECM T7 control module.
  2. Final check:
    • Turn the ignition switch to the ON position.
    • Clear the DTCs (ECM).
    • Turn the ignition switch to the OFF position.
    • Wait for 10 seconds.
    • Reset the limp-home mechanism.
    • Clear the DTCs in all systems.
    • Carry out a drive cycle: Drive the car at varying engine loads and engine RPM for 5 minutes.
    • Evaluate the drive cycle: Check that the DTC has not recurred.
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