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Continued problem on the RF wheel and speed sensor ?
Well after a search for my problem spurned me to get a new RF wheel hub assembly, I still have the TCS-C1233 DTC.And I still have The following: 1. Service active handling 2. Service traction control3. Service ABS no new codes, no stored codes ? but still have the RF wheel speed sensor code. . . . And am I correct in thinking the all of these trouble codes could be from the same DTC C1233 ??? The Right front wheel hub was bad, and it came with a new speed sensor in it, and the wiring has a number of '***** marks' like someone started to investigate the harness, but I'm not sure. Is there something further up the line that could cause a short or something like that which keeps spitting out the C1233 code ? And it is clear someone was in here before, like not putting all the bolts back in ???
What diagnostics did you do to determine that the hub assembly/ sensor was bad ??…did a shop diagnose and change the hub ??…what will set the 1233 is an open, or a short to ground or short to voltage on either the signal or low reference wire…it is not seeing a variation in the wheel speed…only a voltage that is out of range…that 5 volt “bias voltage” is riding on the AC voltage that is produced by the rotating hub…if this all happens in 0.2 seconds the code sets…all those messages you saw happen if the code sets…as you can see in the picture you have a sensor signal wire and a low reference (ground)…with the key ON you will see 5 volts on the white sensor wire and less than 100mv’s on the ground…best thing to do is unplug the EBCM harness and check for an open between each end of the signal wire… you should see continuity between each end…do the same for the ground…most wiring issues happen on that short harness that connects to the hub sensor…doing a “wiggle” test should also be done to check for an intermittent condition…the marks you saw were from a “piercing probe” which is sometimes preferable to back probing a wire…you don’t want to disturb a connection that may be bad by back probing (pic below)…those marks should have liquid electrical tape applied to them.
Ok and Hi ! I had my car in the garage, and we changed the Rf hub assembly and it has a new speed sensor in it. Once done I took it out and the exact same problem/warning ABS light came on, with the 1.Service active handling, 2.Service traction control And 3.Service ABS. so we got a new sensor harness and but before we tried it, we took the speed sensor harness from the passengers side and swapped it for the harness from the Drivers side and went back out on the road. The only change I can see is the first time I took after the hub and speed sensor change, the ABS light and the other messages on the DIC came on within 25 feet, and with the harnesses swapped it took about 1/4 miles for them to come on and I went and filled the tank this morning, and cleared the codes C1233 and B2860 and headed out and agine with in 1/4 miles both came back on. I know the B2860 is the steering wheel alignment sensor is bad and I ordered one and I'm pretty sure that will close the chapter on the B2860, but the only other code set is the C1233 so I assume I need to get a multi-meter and see about the voltage, but I don't understand why the new speed sensor keeps setting the C1233 code ? The code C1233 is for a open speed sensor low voltage, but it is brand new Timken hub assembly ? The sensor is new and the wiring is fine ??
Like I mentioned in my previous post you can use the wire with the 5 volt bias to help troubleshoot that particular wire…just wiggle the harness if you can between the sensor and the EBCM looking for that 5 volts to drop out…most issues are in the short harness since that harness flexes every time the wheel is turned…look for loose connections at the harness making sure the terminals aren’t spread apart…if good disconnect the EBCM connector and ohm out between the sensor and the EBCM pin 24 which is a tan wire…you can change sensors out all day without success unless you check the wiring !!…wiring is for an 01…you can see if pins 24-29 line up as far as wire colors go.
Ok and Thank you, It just seems to me in a sense odd why it keeps going back to the C1233 which is the right front wheel, but I will make a copy of your advice and see if the shop, ( trying not to suggest their lack of experience on corvettes ) and see if we can go from the EBCM backwards to the wheel. Still seems odd to me why it sets the ABS light now at 1200 feet when it use to set the light or code at 25 feet before. but despite the wiring looking fine, there must be a fault in that harness or, at the connection at the EBCM. Car was never in an accident ?
And if my health was better I could crawl under it as see for myself.
Sorry but I didn’t know that you had a shop diagnose it and still could not get it fixed...when you said you “had the car in my garage” I thought you meant the garage in your house and not a repair shop…I would have saved myself the typing…it’s better to let them diagnose it than us here on the Forum because they have the car in front of them…you don’t trust their diagnostic skills ??….you don’t have to be a Corvette specialist to fix this…I would do the same diagnostics on a Honda Civic or your Corvette !!…you can have the shop call me and I’ll explain to them how to diagnose it but I’ll charge them a diagnostic fee…and I ain’t cheap…LOL !!…where in PA are you located ??
Yes it's not that I don't trust them, but since what they said after the car has been there 3 weeks, is "It's something in the wiring, as soon as we have some time we'll look again." and they have been good at some other work on my pickup and I have used them for the last 10 years or so, but I feel their uncomfortable on anything 'Wiring' involved. So technicians are good at something here and there, but some areas are a little either too complicated OR something that for them is going to take too much time, time they could be making money doing other jobs, either way I'm still sitting and wondering and hesitant to call or ask as then I'm a PITA customer. Neither that makes me look like some PITA customer and I don't want to involve another shop if I can avoid it.
But if you can, is the 'Service Active Handling' and 'Service Traction Control' messages I get caused by the ABS system being out of commision ???
Yes it's not that I don't trust them, but since what they said after the car has been there 3 weeks, is "It's something in the wiring, as soon as we have some time we'll look again." and they have been good at some other work on my pickup and I have used them for the last 10 years or so, but I feel their uncomfortable on anything 'Wiring' involved. So technicians are good at something here and there, but some areas are a little either too complicated OR something that for them is going to take too much time, time they could be making money doing other jobs, either way I'm still sitting and wondering and hesitant to call or ask as then I'm a PITA customer. Neither that makes me look like some PITA customer and I don't want to involve another shop if I can avoid it.
But if you can, is the 'Service Active Handling' and 'Service Traction Control' messages I get caused by the ABS system being out of commision ???
Thank you again
Well I’d use them for brake and oil changes but not for any diagnostics…take the car to an auto electric or a diagnostic shop…I’m surprised they say they are not comfortable with wiring but I’m not surprised..dealerships are just as bad…I’d love to see them try to diagnose a CAN communication issue if you had a C6 !!…as you can see when the DTC sets you’ll get the messages below..I know of a few shops in PA they may be able to help you if I knew what part of PA you live.
Oh Yeah, There is a recommended shop about 45 miles from here, and since it going to take some time to get an appointment, but being that distance is a slight inconvenience, but there is snow about 3 weeks away and that further hinders my plans, but I have a new wiring harness which I'm going to clean the connections at both ends and I'm going to install the new harness. Can't do any harm and if no improvement so be it. I hate feeling like i can't do anything about my little 'Situation' otherwise I'll see how I turn out with a Corvette shop.
Oh Yeah, There is a recommended shop about 45 miles from here, and since it going to take some time to get an appointment, but being that distance is a slight inconvenience, but there is snow about 3 weeks away and that further hinders my plans, but I have a new wiring harness which I'm going to clean the connections at both ends and I'm going to install the new harness. Can't do any harm and if no improvement so be it. I hate feeling like i can't do anything about my little 'Situation' otherwise I'll see how I turn out with a Corvette shop.
Thank you for your patience !
No problem !!…you’ll get it fixed eventually…good luck !!
[QUOTE=C5 Diag;1605956256]No problem !!…you’ll get it fixed eventually…good luck !!…if you’re near Pittsburgh (Bethel Park) or State College I have 2 recommendations !!
Hi and thank you, I live in the SE on the Delaware River just about the border with Delaware. I expect snow in 2 weeks, so I'll have to see if it can be addressed before then, but other wise I never use the Corvette in snow or salt conditions. But your a great source of technical advice and I respect and appreciate as do all of the other members here at CF !
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Continued problem on the RF wheel and speed sensor ?
