on February 23, 2018, 8:19 am, in reply to "Re: VW T5 2.5 Mysterious glow plug fault."
If access to the plug is poor you may be able to measure current & voltage at the control unit.
Current will be the same at any point between controller & plug, same is no of course always true for voltage.
Aidan
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VW T5 2.5 2008 - Mysterious glow plug fault - Fixed # - Tony Lewis February 21, 2018, 12:55 pm
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