Engine Controls - Self-Diagnostics - TRIONIC Fuel Control System: Testing: Notes

The following check list of procedures is suggested to be followed to ensure correct diagnosis and repair:

• Record Customer Complaint
  
  Ensure all customer complaints or observations are recorded. Test drive vehicle with customer when necessary for malfunction verification.
• Retrieve Diagnostic Trouble Codes (DTC)
  
  Connect appropriate scan tool. Retrieve DTCs. See RETRIEVING DIAGNOSTIC TROUBLE CODES  (DTCs).
• Clear DTCs
  
  Clear DTCs. See CLEARING DTC  .
• Visual Inspection
  
  Inspect all connectors of suspect circuit or component. Ensure all connections are clean and tight.
• Confirm Symptoms & DTCs
  
  Perform road test. Determine if original symptoms are still present. Retrieve DTCs.
• Diagnose & Repair DTCs
  
  Perform diagnosis and repair procedures as needed. See applicable SYSTEM CHECKS. If no codes are present, proceed to TESTS W/O CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.).
• Confirmation Procedure
  
  After repairs have been completed, clear all DTCs. See CLEARING DTC  . Perform road test. Confirm that no DTCs are present and all symptoms and/or complaints have been repaired.