SUZUKI GSXR 600/750 Testing the TPS for Dead Spots using Resistance

Описание: This is not meant to be a sure fire way of resolving TPS issues, it’s merely a home grown way of seeing if a dead spot could exist within the TPS’s. Always be sure to test for proper voltages and resistances according to the service manual. When testing for beginning resistance point (closed throttle) the service manual states it should be 0.6 ohms but this value is wrong, you will not be able to achieve this low value when the TPS is mounted onto the throttle body. I’ve tested 3 TPS’s and all beginning resistance values varied between the 1.4-1.8 ohms with an ending value being 4.8 ohms (full throttle). Your input voltage will be 5 volts, this is what the ECM give’s to both TPS’s, When making your own testing power supply unit with a 9v battery and 5v voltage regulator and switch be sure to test the output lead of the regulator to insure it is putting out the correct voltage, these things tend to be off sometimes and you may need to buy more than one to get the 5v output source.

If you’re wondering if the TPS and STPS are the same, yes they are. You could swap them and have the bike run exactly the same after proper alignment of both. The TPS and STPS connector as exactly the same except for one is black and the other is gray. Signal wire for the TPS is Pink while the STPS is signal wire color is Yellow both have an input voltage of 5 volts.

My question is since they are the same part then why does the Suzuki dealership charge you two different prices for each, TPS $110/ STPS $120… don’t believe me, test the resistance and voltages for yourself.

In any case, replacing the TPS did not solve my issue but the readjustment of it made my bike idle a lot smoother.


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