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Discussion Starter · #1 ·
Yamaha grizzly 700 2009

When the engine is started, the EPS light comes on and remains on until you stop the engine, EPS does not work.
Diagnostic mode showed error 21
-Speed sensor
- Open circuit
-Bad control box

The speed on the dashboard when driving shows, does this mean that I can discard the first 2 malfunctions and start looking for a problem in the EPS block?
 

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Discussion Starter · #2 ·
If current is applied to the red and black wires of the EPS motor, the sound of the electric motor is heard, but the wheels are stationary
 

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Welcome from Colorado.
I would disconnect the battery to see if the codes reset, maybe the top two will go away.
You can get a f.s.m. here.....if the motor is working with outside power, check for a bad fuse or wire problem.
 
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