https://wiki.ross-tech.com/wiki/index.php?action=history&feed=atom&title=01177 2026-05-16T19:06:40Z Revision history for this page on the wiki MediaWiki 1.43.3 https://wiki.ross-tech.com/wiki/index.php?title=01177&diff=6759&oldid=prev 2012-07-02T09:09:02Z

<p>Created page with &quot;== 01177 - Engine Control Unit == === 01177 - Engine Control Unit: Faulty === ==== Possible Symptoms ==== * Malfunction Indicator Light (MIL) ON ==== Possible Causes ==== ...&quot;</p> <p><b>New page</b></p><div>== 01177 - Engine Control Unit ==<br /> <br /> === 01177 - Engine Control Unit: Faulty ===<br /> <br /> ==== Possible Symptoms ====<br /> <br /> * Malfunction Indicator Light (MIL) ON<br /> <br /> ==== Possible Causes ====<br /> <br /> * Wiring and/or Connector(s) from/to Engine Control Module (ECM) faulty<br /> * Engine Control Module (ECM) incompatible<br /> * Engine Control Module (ECM) faulty<br /> * Engine Control Module (ECM) modified<br /> ** Immobilizer removed<br /> ** Chiptuning (Chip replaced)<br /> <br /> ==== Possible Solutions ====<br /> <br /> * Check Wiring and/or Connector(s) from/to Engine Control Module (ECM)<br /> * Check/Replace Engine Control Module (ECM)<br /> * Check Engine Control Module (ECM) for Modifications<br /> ** Old Style Chip Tuning where actual Chips are replaced may have resulted in bad Soldering or otherwise broken the ECM.<br /> <br /> <br /> === 01177 - Engine Control Unit: Unauthorized ===<br /> <br /> ==== Possible Symptoms ====<br /> <br /> * Malfunction Indicator Light (MIL) ON<br /> * Engine Start not permitted<br /> <br /> ==== Possible Causes ====<br /> <br /> * Immobilizer not adapted<br /> * Engine Control Module (ECM) modified<br /> ** Immobilizer removed<br /> <br /> ==== Possible Solutions ====<br /> <br /> * Check/Adapt Immobilizer<br /> <br /> <br /> === 01177 - Engine Control Unit: Not Currently Testable ===<br /> <br /> ==== Special Notes ====<br /> <br /> * 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.<br /> <br /> __FORCETOC__<br /> [[Category:Fault Codes]]</div>

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