Correct and when doing this, all 5 pins on the relay should show +12v
if the relay is good.
Larry Turner via Mercedes <mailto:mercedes@okiebenz.com>
January 2, 2017 at 7:56 AM
This is similar to a previous question - based on the below it sounds
like I can test the relay by removing the plug going to the GPs and
seeing if another fuse blows, right?
Thanks!
fmiser via Mercedes <mailto:mercedes@okiebenz.com>
December 30, 2016 at 5:55 PM
Larry wrote:
Yeah, tried that and it immediately blew the fuse. And yes, I
visually checked the wiring to the GPs - the ends of the GPs had
the wire with a nut on it.
Is there a plug to disconnect all the glow plugs from the relay?
Unplug it and using an ohm meter check for 0 ohms rather than 2
ohms on each one of the wires and plugs.
The difference between a good plug and a shorted one isn't much on
the typical meter. That's why I like using an ammeter. But you
still might be able to spot _which_ wire/plug is shorted.
And with all the glow plugs disconnected from the relay, put a
fuse in and if it doesn't blow, then you can be sure the problem
is no the relay, but "downstream".
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