despower
Active Member
Any help from an informed techie would be appreciated.
I have a confirmed fault code 5 on my Sportster. I am somewhat informed because I have the shop manual. I don't have the Vehicle Comms kit so I can't investigate the code much further other than check possible problems associated with code 5... these could be water (WTS), exhaust gas (EGTS), manifold actual pressure (MAPS) and throttle position sensors (TPS).
So far, I have checked resistance on WTS (within range) and the EGTS (within range) from the amps connector. Since these check out ok, it sounds like the wires are all OK too. Next I checked resistance on TPS (the MAG and PTO side). On the MAG side, I get resistances of 2.15K, 2.65K and 1.3K on combinations of the three pins when throttle is in idle position, which, according to the manual, should be within range (note the last two aren't bang on the suggested values of 2500 and 1200, but it seems close enough). On the PTO side, I get resistances of 2.06K, 1.13K and 2.69K respectively on the three pin combinations which are also pretty close to the suggested 1600-2400, 1000 and 2500.
Can a techie tell me if these resistances sound right?
When the throttle moves, the resistances move linearly and look smooth (on my digital multimeter it is hard to tell). The throttle moves fine so I am assuming that all is good, but I am unsure.
My next step is to check voltages at TPS and also check the MAPS. Btu I am getting close to the end of my rope and am thinking that I should bring it into the shop. Any advice very welcome thankyou.
Des
I have a confirmed fault code 5 on my Sportster. I am somewhat informed because I have the shop manual. I don't have the Vehicle Comms kit so I can't investigate the code much further other than check possible problems associated with code 5... these could be water (WTS), exhaust gas (EGTS), manifold actual pressure (MAPS) and throttle position sensors (TPS).
So far, I have checked resistance on WTS (within range) and the EGTS (within range) from the amps connector. Since these check out ok, it sounds like the wires are all OK too. Next I checked resistance on TPS (the MAG and PTO side). On the MAG side, I get resistances of 2.15K, 2.65K and 1.3K on combinations of the three pins when throttle is in idle position, which, according to the manual, should be within range (note the last two aren't bang on the suggested values of 2500 and 1200, but it seems close enough). On the PTO side, I get resistances of 2.06K, 1.13K and 2.69K respectively on the three pin combinations which are also pretty close to the suggested 1600-2400, 1000 and 2500.
Can a techie tell me if these resistances sound right?
When the throttle moves, the resistances move linearly and look smooth (on my digital multimeter it is hard to tell). The throttle moves fine so I am assuming that all is good, but I am unsure.
My next step is to check voltages at TPS and also check the MAPS. Btu I am getting close to the end of my rope and am thinking that I should bring it into the shop. Any advice very welcome thankyou.
Des
