[My question is how do you know if these types of fuses are blown?]

I'm posting this to hopefully help someone else who encounters the same issue.

Recently I noticed the 4WD drive indicator stopped showing on the dash display and the 4WD wasn't engaging.

I decided to take look at the fuses first. After locating the fuse relay for the 4WD I pulled the fuse and everything looked fine. I pressed down on all the other fuses and all seemed to be seated securely. I then fired up the ATV and the 4WD started engaging again.

The yellow circle indicated the fuse relay for the 4WD. My question is how do you know if these types of fuses are blown? I could see nothing that would indicate a blown fuse.

I did buy a couple on Amazon so I could have them on hand in case this happens again.

Hi SacForce,

The electrics on the quad are a very basic, i.e. standard wiring non multiplex, therefore when a rely stops working there will be zero indication anywhere of the fact that the relay is faulty and has stopped working.

However, you have already discovered the only form of fault indication, for a basic electrical circuit with a relay, i.e. the components in that circuit are not functioning, in your case the FWD circuit.

The majority of todays cars have multiplex circuits, upwards of an average of 20 computers on board, the more expensive the car = more computers can be upwards of 60 computers i.e. ECU's controlling all the various circuits. These ECU's communicate with each other and with all the various networks on the car all communicating at different data speeds and protocol's. To cut a very long story short a "Multiplexed" system can just about inform you of all faults on all systems.

I doubt very much if Quad manufactures will ever install a multiplexed system, too expensive and too prone to water damage.

GMSAHFR

   
   

[2015 Z Force 800 53/Trail EPS]

To my knowledge those are only relays, and have no fuses in them. However the circuits that feed them, both lines/loads and their coils will be fused..somehow..Yours looks to have had just a poor connection.