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Home >> Fiat >> 2017 >> 124 Spider Classica, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 ((Aw6R31 Automatic Transmission Control Module (TCM) - Electrical Diagnostics)) >> DTC Troubleshooting >> P0604-00 Internal Control Module Random Access Memory Ram Error >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FOR THE PRESENCE OF ERROR IN THE TRANSMISSION CONTROL MODULE (TCM) 
    1. Go to Key-OFF condition, then ON (engine off or on).
    2. Connect the diagnosis equipment and check for errors.

      Are there errors?

      Yes 

      • Proceed as indicated by the diagnosis equipment, then go to Step  2.

      No 

      • Go to Step  2.
  2. CHECK CORRECT OPERATION OF TRANSMISSION CONTROL MODULE (TCM) 
    1. Perform the Transmission Control Module error deletion procedure.
    2. Start the engine.
    3. Heat engine and gearbox.
    4. Drive the vehicle in D position and ensure the gears from 1st to 6th easily engage.
    5. Check whether there is a fault.

      Is the error still present?

      Yes 

      No 

      • End of diagnosis.