mercedes/e-class/1996-2003

mercedes E320 CDI 2002 W211 Glow plug problem

hi, have problem with no voltage at glow plug leads, Feed to glow plug module from ecm pin 43 is reading between 6 to 8 volts, is this sufficient to operate the relay in the glow plug module? Feed to glow plug module is 12.5 v and earth is ok. Any other suggestions would be appreciated. Regards.

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