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Home >> Hyundai >> 2010 >> Elantra GLS >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 2) >> DTC P0605: Internal Control Module Read Only Memory (ROM) Error >> Inspection Repair >> System Inspection
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System Inspection

  1. Ignition "OFF".
  2. Disconnect ECM connector.
  3. Ignition "ON".
  4. Measure voltage between terminal 6 of the ECM harness connector and chassis ground.

    Specification:  Remain stable at battery voltage

  5. Are circuits remaining stable at battery voltage?

    YES 

    • Using a scan tool, check ECM software version and upgrade as necessary. If version is the newest one, check ECM for contamination, deterioration, or damage. Substitute with a known-good ECM and check for proper operation. If the problem is corrected, replace ECM and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    NOTE: It is necessary to perform the TPS adaptation procedure with Scan tool when the throttle body assembly or ECM is replaced.
    • TPS adaptation procedure
    1. Erase previous TPS adaptation value using Scan tool.
    2. Ignition "OFF" and then "ON" without cranking. Wait for 10 seconds under enable conditions.
      • Enable conditions : Battery >10V & Intake Air Temp. >5.3°C (41.5°F) & 5.3°C (41.5°F) <Engine Coolant Temp. <99.8°C (211.6°F)
    3. After TPS adaptation, the system normality should be confirmed by reading out "FMY" on the Scan Tool.

      NO 

      • If voltage fluctuates, check circuit for loose, bent or corroded terminals, Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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