Quote:
Originally Posted by Billybob
You most likely have no power to the module's temp electronics because if there was power the display segments would be visible even with no sensor connected. Without a sensor a powered module will read 136+. There appears to be a ground connection because the illumination works. If you have the illumination bulb lit all the time with the ignition turned on, it may very well be that you have the connections to the illumination bulb and the module power switched. Double check those connections and that might get things correct! Good Luck!
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Yes, the illumination is permanently on with the ignition tunred on. It is only one connector to the display module. I am going to check if the connector can be inserted other way, else I don't know how the connections can be switched. Thank you for your diagnosis.
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1996 E320 since 1/16/08, 171K miles as of Feb 2011
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1989 300CE - R.I.P. Dec 29 2007
Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE
Last edited by Texholdem; 01-26-2010 at 02:53 PM.
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