mcgilles

started my car this afternoon and got a charge system fault message. it went away on its own and did not return after a restart. its happened before. noticed that my system voltage was running a bit below what it usually does. it returned to normal by the time I got home.

I checked the codes for the fun of it. got most of the standard ones from the seat saying all the sensors are bad.

each door control module had a comm failure to BCM code, and then the confusing one: B1001H, history code. but configuration error? the BCM has not been replaced, nor has any other computer on the car. what gives? and if there really is a configuration error...how could it be an H code? I certainly haven't changed any configuration. the car is tuned just a standard performance dyno tune, shouldn't have affected other modules. anything to worry about?

mcgilles

bump...other threads on this code are always accompanied by other codes, and they were the focus. I don't understand how a car could throw this code without someone messing with the config..still looking for any input!

Bill Curlee

Heres the DTC definition out of the service manual.

If I was a betting man, I would have to say,,, you had a voltage error. May be time to rebuild that ignition switch. Bet you have some dirty burnt contacts in the ignition switch.

BC


DTC B1001 Option Configuration Error
Circuit Description
When the ignition key is first turned to the RUN position, the inflatable restraint sensing and diagnostic module (SDM) compares the restraints ID that is stored in the SDM to the restraints ID that is stored in the BCM. The restraints ID that is being compared contains the last four digits of the SDM part number. For more detailed information concerning the Class 2 data lines, refer to Data Link Communications Description in Data Link Communications.

Conditions for Setting the DTC
Ignition 1 voltage is within the normal operating voltage range.
The restraints ID that is stored in the SDM does not match the restraints ID that is stored in the BCM.
This test is only run once during power up initialization.

Action Taken When the DTC Sets
The SDM sets a DTC B1001.
The SDM commands ON the AIR BAG warning lamp via Class 2 serial data.
The SDM disables all deployments.
Conditions for Clearing the DTC
The restraints ID that is stored in the SDM matches the restraints ID that is stored in the BCM.

Diagnostic Aids
DTC B1001 is an indication that the restraints ID's stored in both the BCM and SDM do not match. If either the BCM and/or PCM were replaced, the replacement modules need to be reprogrammed for proper operation.

Test Description
The number(s) below refer to the step number(s) on the diagnostic table.

This step checks to see if the correct VIN is programmed in the powertrain control module (PCM).

This step checks to see if the body control module (BCM) has been replaced.

DTC B1001 Option Configuration Error Step
Action
Value(s)
Yes
No

1
Was the SIR Diagnostic System Check performed?
--
Go to Step 2
Go to SIR Diagnostic System Check

2
Install a scan tool.
Use the scan tool to verify that the PCM is programmed with the correct VIN by comparing the VIN that is stored in the PCM to the VIN plate of the vehicle.
Is the PCM programmed with the correct VIN?
--
Go to Step 4
Go to Step 3

3
Use the scan tool and/or the techline machine to program the correct VIN into the PCM.

Is the programming procedure complete?
--
Go to Step 6
--

4
Was the BCM replaced?
--
Go to Body Control Module (BCM) Programming/RPO Configuration in Body Control System
Go to Step 5

5
Turn the ignition switch to the OFF position.
Replace the SDM. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement .
Is the repair complete?
--
Go to Step 6
--

6
Using the scan tool, clear all the SIR DTCs.
Turn the ignition switch to the OFF position for 10 seconds.
Make sure that all components and connectors are properly mounted.
Are all the SIR components properly mounted and connected?
--
Go to SIR Diagnostic System Check
--

mcgilles

hey Bill! you know, you could be right here. I also had an SDM code which I accidentally cleared before writing it down. I haven't looked into the procedure for rebuilding the ignition switch, is the thread with instructions in one of the stickies at the top? that's a free thing to do right? might as well give it a try before adding parts.

would this explain why my charging system used to operate at 14.4 or even a tenth or two higher then all of a sudden after this it dropped to 13.0-13.7 eventually working its way back up to 14.4 after a while of driving? charging system also lost several tenths of a volt when the AC was on. I'm guessing that's the load from the blower motor and the condenser fan? I've never noticed it before.

mcgilles

I did not have any airbag warning lights or any other warning lights however. the only indication of any problem was the charge system fault message which cleared itself after several seconds prompting me to check the codes. voltage change could indicate a problem also, but its still within operating specs.

Bill Curlee

Free as free can be:


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


Give it a try.

BC

dgrant3830

Do all the dilligent effort on the ignition switch. It sounds like your battery is done or time to replace it. But, before spending on a new one, make sure you check the battery connections at the battery, starter slenoid and engine block first. I have to wonder about your SDM and if you've ever been in an accident? Follow Bill's advice first and carefully as he knows more about these cars than the rest of us.

FXSTB99

I have this error code also; I had to change my BCM out due to poor utter drainage that dumps water directly above the kicktoe on the BCM & fuse box. My main concern is that the code carries both the H & C . Suffix, if it was only H, I wouldn't sweat it, but since it had C for current, I would like to ask the powers that be, since I'm not smart enough to figure it out, which scan tool are you talking about? I have an OBDII / EOBD code scanner. I also had an accompaning of U1064 H but that part of the code table didn't go above U1030 something.

If the OBDII is not the correct scan tool, which would you recommend? Additionally, would the recommended tool program RPO's? Please Advise ... thank you.

2003 C5 Z06 - only option on this model was magnetic ride control which mine doesn't have, so how many RPO's could there be. There is a lot of numbers on the label in the glove box, but I guess they would make more sense if I had the right scan tool, and smarts to translate the RPO numbers on the label in the glove box.

Very Respectfully,
George

FXSTB99

Okay, thanks 8VETTE7, GM TECH II, now I know what my next mission is ... and thanks for such a prompt reply in 45 words or less.

Just finished the VATS relearn process, and now it starts and no new error codes. So, now either to try and find a used TECH II, or got to a pro shop, I would prefer to find software and a cable to interface through a laptop if anyone is in the market to sell one.

Just as an FYI; I have a Hypertech power programer III for GM 1998 - 2002 - used on a 1998 F Body, and the VIN is been cleared out if anyone is in the market for one. I was an F body guy, before moving to a Y body guy.

Thanks to Vette, and every on else who provided some really good information. It made what first appeared to be a Marathon, into a short jog around town. I just wanted to add it's great to have the handful of guys & gals out there that really buckles down into the nuts and bolts of our addiction.

Very Respectfully,
George

sha82

Hi,
I replaced both wheel and knee airbags, belts and buckles with the module too. Got all parts from a used car at junk yard with no airbags deployed.
Still airbag light is on and getting the code B1001.
I am not a tech guy, got little bit confused about the procedure you mentioned.
Do you think I need to reprogram the airbag module?
It's a 2016 Cruze limited (older style, vin P 4th digit).
Thanks

1911tex

I think you are replying to a decade old thread. You might start a new one?