RE Cam Sensor Tesing

[Rottweiler]

Got a 2004 chopper with cam sensor. Found this test in another post.

How do you test the cam sensor to make sure that is the problem.
1. Disconnect the cam sensor from the ignition module.
2. Take out your trusty multimeter and set it to the RX1 scale.
3. Now while touching the sensor backing plate with the negative meter lead touch the positive meter lead on each of the three wires of the sensor connector (red, black, & green). If you get continuity from the backing plate to any of them the sensor is bad.
If it passes the first test...
1. With your meter still at the same settings touch the positive meter lead to the green wire and the negative meter lead to the black wire. If you get an "open" it's good.
2. Then take the positive meter lead and touch the black sensor wire while touching the negative meter lead to the green wire. In this case an "open" is bad. A reading somewhere around 300 - 750 Kohms is what you're looking for.

Got to the last test of part two and mine showed 6.33 Meg ohms. So I order a new one. When I got it did same test with the new one. I am using a good meter a Fluke 87 it reads 2 meg ohms. Should I install it and see if bike gets spark? Anyone else familiar with these? Is any reading higher than 750 K ohms bad?

Thanks in advance Rottweiler

 

[Rottweiler]

Another thing to check is ground to the Thunder heart Ing. Had 12 volts but check it to the battery. After replacing the cam sensor with same results. Someone ask if it had a ground? Put a jumper for the battery to the Ing. box and pesto. Got spark now.

 

[DRBarnhart]

Got to the last test of part two and mine showed 6.33 Meg ohms.

Happen to have a pic of the meter reading?

Dennis

 

[Rottweiler]

Yea just took them today it measure 4.92 meg

 

[Rottweiler]

Yea just took them today it measure 4.92 meg

 

[Hirter6Pack]

I would hit the range button on your meter till you see k ohm then take another reading.

 

[Rottweiler]

I would hit the range button on your meter till you see k ohm then take another reading.

Then it read OL open

No big deal I put the new one on already. I hate checking with pins. Does anyone have a better way? I might be stretching the JST with these. ???

 

[Hirter6Pack]

Red meter lead on black wire to cam sensor.
Black meter lead to green wire on cam sensor.
Yes

 

[Rottweiler]

Yes

 

[Hirter6Pack]

I know it sucks. Might ask around and see if anybody has any spare JST connectors.

 

[Rottweiler]

Got some smaller needles Still reads 4.68 meg this is the old one I believe it was stock? The new one from WSW with my meter was around 2 meg and it works bike is running. I believe this one might still work also. I rode my bike to my sons house tonight. His garage is not full yet. HAHA It seems the reason I had no spark was lost the ground to the ing. module. I will worry about it another day. Thanks.

 

[Hirter6Pack]

Another thing to check is ground to the Thunder heart Ing. Had 12 volts but check it to the battery. After replacing the cam sensor with same results. Someone ask if it had a ground? Put a jumper for the battery to the Ing. box and pesto. Got spark now.

And make sure you have 12 V going to your Thunderheart ignition. I had a problem where I was only getting 8 V to the Thunderheart ignition as soon as I put 12 V to it it fired right up. Waiting on a RIP unit from Curtis.

 

[Hirter6Pack]

Least you got it going and you may have a spare cam sensor. $65 for an education is not bad. But your ground is coming from the EHC. Not wishing you any bad luck but keep an eye on that thing.

 

[Rottweiler]

YES I have the exact same setup, I am on my third EHC and second wiring harness from the EHC. Yes it has me thinking. Might be time to just start over and rewired old school?

 

[Rottweiler]

Nice talking with you. It helps calms me down. I can get a little pissed some time trouble shooting things. Got to run work comes early.

 

[Th3InfamousI]

And make sure you have 12 V going to your Thunderheart ignition. I had a problem where I was only getting 8 V to the Thunderheart ignition as soon as I put 12 V to it it fired right up. Waiting on a RIP unit from Curtis.

Just an FYI that 04 EHC had a recall the connector would get loose and you'd lose power intermittently.

I took zip ties around my EHC and connector to keep contact. Eventually replaced it. Might be worthwhile additional security.

Sent from my 831C using Tapatalk

 

[Hirter6Pack]

Just an FYI that 04 EHC had a recall the connector would get loose and you'd lose power intermittently.

I took zip ties around my EHC and connector to keep contact. Eventually replaced it. Might be worthwhile additional security.

Sent from my 831C using Tapatalk

Hey thanks,I did read your post on another trend and so I tried that and hold it down tight and wiggled it but could never get more than 8 v to the ignition module.