01177

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Contents

01177 - Engine Control Unit

01177 - Engine Control Unit: Faulty

Possible Symptoms

  • Malfunction Indicator Light (MIL) ON

Possible Causes

  • Wiring and/or Connector(s) from/to Engine Control Module (ECM) faulty
  • Engine Control Module (ECM) incompatible
  • Engine Control Module (ECM) faulty
  • Engine Control Module (ECM) modified
    • Immobilizer removed
    • Chiptuning (Chip replaced)

Possible Solutions

  • Check Wiring and/or Connector(s) from/to Engine Control Module (ECM)
  • Check/Replace Engine Control Module (ECM)
  • Check Engine Control Module (ECM) for Modifications
    • Old Style Chip Tuning where actual Chips are replaced may have resulted in bad Soldering or otherwise broken the ECM.


01177 - Engine Control Unit: Unauthorized

Possible Symptoms

  • Malfunction Indicator Light (MIL) ON
  • Engine Start not permitted

Possible Causes

  • Immobilizer not adapted
  • Engine Control Module (ECM) modified
    • Immobilizer removed

Possible Solutions

  • Check/Adapt Immobilizer


01177 - Engine Control Unit: Not Currently Testable

Special Notes

  • When Found in Instrument Cluster (J285), check Engine Control Module (ECM/#01) for Fault Codes. This Code may be stored when the Cluster is unable to properly determine the Status of the ECM due to Communication Issues or because the ECM is occupied by other Tasks.



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