Went out to my vette today havent been in the car for 3 months i noticed the ABS light was on and the Traction Control light was on and both said they needed to be serviced i wrote down the rest of the codes theres about 22! Cant figure out what it is i have LG headers with B&B bullets exhaust a hurst shifter an vararam intake along with new rims and tires i was wondering if it had to be tuned to make those Services go away cant figure out what is going on with it,its only got 38,000 miles on it an i cant figure anything else out.Even when i put the keys in the windshield wipers start to move an dont stop. Any suggestions?

 

3 MONTHS! CHARGE THAT BATTERY and clear the DTCs. I bet it has to do with LOW BATTERY VOLTAGE!

Charge the battery and clear the DTcs and see if it crrects the issues.


BC

 

its a new battery butbshould i clear all those codes still? the car starts right up but ill try that

 

A new battery will still lose power over time if not recharged.

 

The car is constantly consuming power regardless whether its driven or not. Its not like the old days. When the car is shut down, it should still be sucking about 20ma constantly from the battery which means you need to drive your car! Also, draining your new battery all the way down and you could possibly ruin it.

 

YES.. Charge the battery and clear ALL the DTCs. Then see if the issue comes back. If it does, post any DTCs that reappear.

BC

 

corvette codes

28-tcs * * C1225 H. - LF excessive wheel speed variation
" * * * *". * C1232 HC - LF wheel speed circuit open or shorted
". * * * ". * *C1255 EBTCM internal malfunction



A0-LDCM *B2282 H-battery #1 circuit
". * * * * * ". B2284 H-battery #2 circuit
". * * * * * " U1064 H-loss of communications with BCM



A1 RDCM * B2253 H-key cylinder switch circuit
". * * * * *". * B2283 H-battery #1 circuit
". * * * * *". * *B2285 H- battery #2 circuit
". * * * * *". * *B2265 H-vertical position sensor circuit
". * * * * ". * *U1064 H-loss of communications with BCM
". * * * * *" * *U1016 H-loss of communications with PCM


A6-SCM. *B0851 H-battery 1 out of range
". * * * * ". * B0856 H-+5 volt reference out of range


B0-RFA. *U1255 H-serial data line malfunction
". * * * ". * *U1096H-loss of communications with IPC
". * * *". * *U1064 H- loss of communications with BCM
". * * *". * U1016 H- loss of communications with PCM
". * * * ". * C2105 H-right front TPM sensor malfunction
". * * * ". *C2110 H- right rear TPM sensor malfunction
". * * * ". *C2115H- left rear TPM sensor malfunction
". * * * ". *C2120H-TPM system malfunction

all those are there i cleared them but they stay there the taction control and ABS are still on cant find the problem

 

YOU my friend have a battery OR 12 VDC circuit problem! PERIOD!

As evident by:

B2283 H-battery #1 circuit
B2285 H- battery #2 circuit

and all of the no comms messages. The modules are NOT getting the correct or any power.

READ THE BATTERY under LOAD and see what it puts out. Turn the light on and read the battery. If it below 10 VDC it toast, hell if its much less than 11.5 its having issues.

Ive see a battery without any load read 12.2 VDC. The second it was loaded, it read 3 VDC. If the battery is good under load:

The last time I saw the same sort of DTCs the IGNITION SWITCH was BAD!

Check out this post and I recommend that you follow it. Its a FREE fix:

- C5 ignition Switch repair - http://forums.corvetteforum.com/c5-t...ch-repair.html

 

thanks! i will give that a try an let you know soon thanks again!

 

Not that this is an answer, but I live in mid Michigan and so my 01 vert 6m sets 3 to 4 months every winter. Last spring for about the 1st month I drove the car I would also get an abs message. Maybe 4 or 5 times and once I began driving regular [4-7 days per week] I no longer had that experience. I start my car all winter from 1 x per week to 1 x per 2 weeks in addition I will charge my battery normally 2 x per winter to maintaine the battery so is it the battery or sencors that foul [old crud] during the long sit time, I dont know but i do know by June it dont happen. Lets see if the same thing happens next spring. The winter down time in prior winters didnt have this problem. These are the problem that go with the privilege on driving a corvette. I would never second guess B.C. as I think he knows more about these cars that any single person on forum. esp the electrial side. Hats off Bill

 

WOW! Thanks! :o

There are some other really smart C5 electrical people on here. You shouldnt pen me as the only guy. There are approx 10 people who contribute significant electrical info feed back and information. We back each other up frequently and talk privately on issues.

This is fun for me and I enjoy doing it. Each time i look up a schematic or pull up information to answer a question, I sharpen my knowledge or learn something.

Something thinking out of the BOX helps also.

BC

 

where exactly is the ignight switch? behind the steering column?

 

DIRECTLY behind the place where you stick the key in.





BC

 

Please just call me "BILL"

Thanks for the back up.

BC

 

thanks! will try your suggestions

 

wasnt the battery everythings putting out the right voltage an still its not working right i dont know what else to do

 

.....I will call you........"The Master"........

 

- C5 ignition Switch repair - http://forums.corvetteforum.com/c5-t...ch-repair.html

 

Will try that.if that is not the case an doesnt need to be fixed is there any other thing I can try

 

EACH AND EVERYONE of those DTC ALL point to the module/s NOT working. All those modules have the following things in common..... POWER / GROUND and Class II serial Bus.

The Class II serial buss will NOT cause the BATT 1 & 2 low voltage DTC.

THE ONLY THING that connects to ALL those modules that could cause all those issues (If you have accurately tested and inatalled the battery) is THE IGNITION SWITCH.

So,,, until that is checked and eliminated,, theres not much I can recommend..

There is ONE thing that you can do to PROVE the switch bad before you remove it. READ the ENTIRE POST. In that post, it list the FUSES to check for 12VDC Ignition Voltage (HOT IN RUN AND START)..

Turn the ignition ON and check each one of those fuse to chassis ground and see what reading you get. It should match BATTERY VOLTAGE!

BC