Comfort Master APU: Check oil switch?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by hiallz, Sep 4, 2011.

Page 9 of 9

Jul 15, 2016 #81

Stretch54 Bobtail Member

6

3

Jul 15, 2016

0

CondoCruiser said: ↑

If it says check the oil switch, it probably has an oil pressure switch as a safeguard. Look for a sensor on the block. It either works on a 5V reference signal (2 wire) or a ground signal (1 wire) back to the units ECM. It could even be a bad oil pump, but I would focus on the switch first. You could check it with a digital volt/ohm meter. I've even seen oil pressure switches get trash in them making them inoperable.
Just because it's fairly new doesn't mean you can't get a faulty part. Is it still under warranty?

Let me go do some research on your unit and I'll be back.
Click to expand...

The oil pressure switch is on top of the oil filter housing , has a wire plugged into the top of it

Stretch54, Jul 15, 2016

Stretch54, Jul 15, 2016

#81
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