vfoltz

The electrical shock system turns on and off periodically. It will stay on for days and then turn off resulting in no shock absorber assistance when driving.

Could this be a bad relay or fuse. Or could this be something that is common.

Please advise.

Thx.

Bill Curlee

Read and post your DTCs

READING YOUR Engine Diagnostic Trouble Codes (DTC)

This procedure should be carried out any time you experience a problem with your C5. Most inexpensive store bought aftermarket code readers will ONLY read power train DTC’s. Reading the DTC’s with the C5 built in code reader will allow you to read ALL the modules in the vehicle.

The Diagnostic Display Mode is entered with the following procedure:
1) Turn on the ignition but don't start the engine.
2) Press the RESET button to turn off any warning messages. (i.e. door open, trunk open ect)
3) Press and hold the OPTIONS button
4) While holding OPTIONS, press FUEL button four times within a 10 -second period.

Initially, the on-board diagnostics go into an Automatic Mode which will cycle through each module and shows diagnostic codes in a pre-set sequence: PCM - TCS - RTD - BCM - IPC - RADIO - HVAC - LDCM - RDCM - SCM - RFA. All codes will be displayed for each module. ( i.e. PCM = 4 codes) If none are present in a given module, you will see No More Codes on the display.

There are two types of diagnostic codes, Current and History designated with a letter suffix, “C” or “H”. A current code indicates a malfunction is present in the module displaying data. A history code indicates a problem existed sometime in the last 40 or 50 ignition cycles. When not accompanied by a current code of the same number, it's potential evidence of a previous problem, now resolved, that was not removed by clearing the codes. More likely it's an indication of an intermittent malfunction.

Intermittent codes are the most challenging of the diagnostics. An intermittent code may have happened once, may have happened more than once but is inconsistent or may be happening on a regular basis but not at the time the codes are displayed. History codes can also be caused by a current malfunction in a system that is not operating at the time codes are displayed. An example is the rear window defogger which doesn't operate until the Body Control Module detects engine rpm. For history codes set by a module that does not operate with the key on and engine off, a special diagnostic tool called a Scan Tester is necessary to properly diagnose the malfunction.

Once the system has displayed all modules, it goes into the manual mode which allows selection of each module using combinations of Driver Information Center buttons. Manual mode can also be entered during the automatic sequence by pressing any button except E/M. Once the display shows Manual Diagnostics, select a module by pressing the OPTIONS button to go forward or the TRIP button to go back. Once a module is selected, a code is displayed, and if more than one are present; press GAGES to go forward or FUEL to go back.
To exit the diagnostic mode at any time, press E/M. If you want to erase codes in a given module, press RESET To reset the codes once in manual mode, press and hold RESET until it displays NO CODES Press OPTIONS to go to the next module. Repeat the steps until you have reset the codes in all the computer modules.
NOTE!! Only reset the codes IF you want to - it is NOT necessary to do this. Clearing a code does not repair a problem. You are simply erasing the evidence of it in the module's memory. If you clear the code/s, and extinguish the Check Engine Light, your emissions status ready will NOT allow you to pass an emissions test until you have completed the required driving cycles. There are a few body module DTC’s that if set will prevent the module from operating properly. Once the DTC is cleared, the module will return to full function. This is not true for power train DTCs.

If you have never read and cleared your codes, there will probably be a lot of old history DTCs. It is recommended that you clear your codes and see if any come back during a driving cycle. Those are the ones that you need to concentrate on diagnosing.

Once you have the codes, the next question is: What to do with the information?
First, consult the factory service manual. Any serious C5 Do-It-Yourself owner should invest in the Corvette Service Manual of the appropriate model year. The Service Manual is really a requirement if you want to understand and work on your C5.

NOTE and a WARNING. You can read the DTCs while the engine is running. I pull mine up all the time while driving.
WARNING. Don’t become distracted while reading DTCs while your driving and cause an accident!!!!! Use common sense and drive safe.

These are some very good C5 Diagnostic Trouble Code (DTC) explanation web sites!!! They also explain how to read the DTCs

Here are some very good sites that explain what DTC mean:

http://www.gearchatter.com/viewtopic11755.php

http://www.obd-codes.com/trouble_cod...d-ii-codes.php

Make sure to include the H or C suffix when you post your DTCs!!

vfoltz

Bo rfa c2100 h c

Bill Curlee

The NEXT time you have a Real Time Dampening glitch, before you turn off the ignition, read and post the codes. I think you not seeing a RTD DTC because the DTCs reset after ignition off.

Bill

lucky131969

I thought it was going to be a cool problem when I read "electrical shock issue"........

vfoltz

U1255h
u1064h
u1016h
u1096h
c2100c

Bill Curlee

I looked up all the DTCs for your ESC/RTD system and I can not find DTC C2100. Are you sure you have the correct DTC. Here are all of the RTD ESC DTCs that apply to your system:

Diagnostic Trouble Code (DTC) List
DTC
Diagnostic Procedure
Module

B2795
DTC B2795
ESC

B3577
DTC B3577
ESC

C0550
DTC C0550
ESC

C0563
DTC C0563
ESC

C0577, C0579, C0582, C0584, C0587, C0589, C0592, C0594
DTC C0577, C0579, C0582, C0584, C0587, C0589, C0592, or C0594
ESC

C0578, C0583, C0588, C0593
DTC C0578, C0583, C0588, or C0593
ESC

C0615, C0620, C0625, C0630
DTC C0615, C0620, C0625 or C0630
ESC

C0665
DTC C0665
ESC

C0690, C0691, C0693
DTC C0690, C0691, or C0693
ESC

C0695
DTC C0695
ESC

C0710
DTC C0710
ESC

P1652
DTC P1652
PCM

U1000 and U1255
DTC U1000 and U1255
ESC

U1001 - U1254
DTC U1001-U1254
ESC



--------------------------------------------------------------------------------
Document ID# 850674
2003 Chevrolet Corvette

Reaccess your DTCs and make sure that your transcribed the correct DTC. If it has a C after the DTC, its current and that the cause of your issues.

BC

vfoltz

Confirmed: RFA 1 code: C2100 C H

Bill Curlee

You got me bud. Ive looked in ESI electronic service manuals, 2002 service manual and googled it. In google, this is what I found:

DTC C2100 Left Front TPM Sensor Malfunction

If someone can find a RTD C-2100 DTC and list the definition, I will be happy to help troubleshoot it.

BC

jirasvet

This is a legit code for the RFA (Remote Function Acuation) Bo rfa c2100 h c,

Trying to bee polite, He never mentions a code for the RTD. Even though he suspects problems

I also can not find a RTD (Real Time Damping)C2100

jirasvet

How do you know it is turning on and off? I have a 50th with the Mag selective, are you getting messages across the DIC?

vfoltz

Yes. It is stating electronic shock system malfunction. Do not exceed 80 mph.

vfoltz

The C2100C is one of my tire pressure monitoring devices that needs to be replaced. The other codes are U1255H, U1064H, U1016H AND U1096H after LDCM AND RDCM.

Bill Curlee

What do you mean?? " He never mentions a code for the RTD."

Thats his statement above.

jirasvet

[
Originally Posted by vfoltz View Post
Confirmed: RFA 1 code: C2100 C H

QUOTE=Bill Curlee;1575041567]What do you mean?? " He never mentions a code for the RTD."

Thats his statement above.[/QUOTE]

Yes and he states RFA and not RTD, they are seprate modules.

jirasvet

Well I would trouble shoot your TPM first,The magnetic ride control takes info from other sensors such as rate of steering,tire size,ride height,braking and speed to determine shock adjustment. Also check your connections at you shocks position sensors.

It is very strange that you are receiving that message with out some type of code under 38-RTD - Real Time Damping try to check for a code when that message appears.

Bill has a write up about checking and cleaning grounds

Bill Curlee

Yes and he states RFA and not RTD, they are seprate modules.[/QUOTE]

Yea,, you are correct. I was looking at his symptoms from the RTD and wasnt seeing the RFA quote. Strange issue. Got to investigate if a TPS will throw the same RTD do not exceed 80 MPH message. something to think about. Will do some researching tonight.


OP

Fix the "DTC C2100 Left Front TPM Sensor Malfunction " and I bet your messages will go away.