Difference between revisions of "01314"

Latest revision as of 14:16, 18 April 2018

Check CAN-Databus Wiring/Connectors from/to Engine Control Module
Check Measuring Value Blocks (MVB)
- Usually Measuring Value Blocks (MVB) 125+ show the current Communication Status

When found in the (1K) chassis with 2.5L gas engine using a MAF (G70) sensor, check the T121/62 (Red/Black) traced power wire to the ECM. If power is missing or a voltage drop is present that wire may be damaged anywhere between 6" and 18" from the connector itself. This will result in no communication in addition to a no-start.
- Based on 2.5L Jetta feedback over the years a majority look like this example however some are damaged further away per this example: with the close-up and distant views.

Engine Control Module stored a Code which influences other Control Modules Functionality.
To clear this Fault Code you will need to correct the Problem in the Engine Control Module first.

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 ====  Special Notes ====
-* When found in a 2005 through 2007 2.5L NAR (North American Region) (1K) Jetta check the T121/62 (''Red/Black'') traced power wire to the ECM.  If power is missing or a voltage drop is present that wire may be damaged anywhere between 6" and 18" from the connector itself. This will result in no communication in addition to a no-start.
+* When found in the (1K) chassis with 2.5L gas engine using a MAF (G70) sensor, check the T121/62 (''Red/Black'') traced power wire to the ECM.  If power is missing or a voltage drop is present that wire may be damaged anywhere between 6" and 18" from the connector itself. This will result in no communication in addition to a no-start.
 ** Based on 2.5L Jetta feedback over the years a majority look like [http://wiki.ross-tech.com/wiki/images/4/48/Damaged_T121-62_2007_Jetta_2.5L_BGQ_ECM.jpg  this example] however some are damaged further away per this example: [http://wiki.ross-tech.com/wiki/images/4/4c/Damaged_T121-62_2006_Jetta_2.5L_ECM.jpg with the close-up and distant views].