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smudge67999

Active Member

• Jan 18, 2014

• #1

hi lads just trying to cure a reving problem.how do i test a stepper motor on my 3.9v8 disco.if i pull the wire off will it cut out on idle or is there another way to test it please

 

discool

Well-Known Member

• Jan 18, 2014

• #2

Push a paper clip or a pin into the wires u wish to test where the wires enter the plug so they connect with the connector pin and clip on your multimeter.

 

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smudge67999

Active Member

• Jan 18, 2014

• #3

discool said:

Push a paper clip or a pin into the wires u wish to test where the wires enter the plug so they connect with the connector pin and clip on your multimeter.

Click to expand...

ok will do thanks

 

zen

Well-Known Member

Events Planner

• Jan 19, 2014

• #4

but a stepper runs at a frequency while changing steps that a multimeter wont detect..ie mine on the 1uz changes at 9ms..once at ecu designated opening voltage is dropped...need a scope..

but if you disconnect motor you can pullse with 12v to test it works.google testing stepper motors..all will be explained..

 

discool

Well-Known Member

• Jan 19, 2014

• #5

If you wish to test the function of the idle control valve as well as the presents of an operating voltage, then on page 2 of the link below is what to do and what you will see.

Standard ECU 1