skelly1

I got a new EBCM to fix the C1255 code. I installed it and it now throws 5 new codes. The old model number is 09356961 and the new model number is 09360921. This part was found somewhere in TN by my mechanic. Apparently the dealer has these on backorder. Did I get the wrong EBCM?

Where can I buy a replacement of the old one other than from the dealer?

Thanks and

trussme

is a GM part # 9367071 ..

here's the list:
Replacement part sources

New EBCM’s … below is a list of part #s. Check with
Fred Beans for actual price & availability ($650 to $1000)

Part Number: 10343433 All 2003-2004
Part Number: 12216561 All 2001-2002
Part Number: 9367071 All 1999-2000 w/o Control Active Brakes

you may want to try:
An alternative to buying a new one is to have your original rebuilt.

For EBCM repair/replace
Call Brandon
877-648-7530 at ABS FIXER
or: www.absfixer.com
$150. plus UPS....warranted as long as you own it

skelly1

Thanks for the reply. How do I know if I have active control brakes?

Do you think the EBCM I got, model number 09360921 is just the wrong part and that's why I have 6 Trouble codes now instead of one? FWIW, it plugs in and bolts up like the old one that is supposedly bad.

Brandon can't fix the old one, unfortunately.

csc67

What year is the car?

The RPO code JL4 = Active Handling System - Look on driver side door or in glove box for this code

What are the 6 codes you are getting?

skelly1

It's a 99 FRC

No JL4 code, it's got a JL9 though.

Here are the TCS codes:

1247, 1271, 1272, 1282, 1283, 1285, 1296. They all have H(istory) and C(urrent) except 1283 which is H only.

skelly1

C1247 Brake Pressure Differential Switch Activated
C1271 LF TCS Master Cylinder Isolation Valve Malfunction
C1272 LF TCS Prime Valve Malfunction
C1282 Yaw Rate Sensor Bias Circuit Malfunction
C1283 Excessive Time to Center Steering
C1285 Lateral Accelerometer Sensor Circuit Malfunction
C1296 Master Cylinder Sensor Circuit Open or Shorted

skelly1

ttt.... I still need some help on this. Thanks, and

skelly1

I have replaced the EBCM twice now and still have the same codes. I have seen reference to Active Control Brakes, which supposedly I have on my car. I have a JL9 option, not the JL4 which I read was Active handling. The EBCM that I currently have on my car is 09376711. Is there a chance that I need the other EBCM for non active control brakes? Thanks

Bill Dearborn

I suspect that is true. I have always interpreted that term to mean Active Handling. C5s all have ABS/TC at a minimum so to me non-active control brakes means the brakes are not applied to individual wheels.

Go to your local dealer with your VIN and get an estimate for how much it would cost to buy a new EBCM. Make sure they include the part number in the estimate.

Bill

Bill Dearborn

Here is a description of the connections on the 1999 EBCM. Compare the wire colors going to the connector pins at the EBCM end of your harness.

Electrical Brake Traction Control Module (EBTCM)




Connector Part Information
12160888

32 Way F Micro-Pack 100 Series (NAT)
Pin
Wire Color
Circuit No.
Function

A
BRN
641
Ignition positive voltage (ON)

B
BLK/WHT
1251
Ground

C
GRY
1787
Motor feed (High) (Magna steer)

D
RED
1242
Battery positive voltage (Solenoid valve)

E
RED
1642
Battery positive voltage (Pump Motor)

F
WHT
345
Motor feed (Low) (Magna Steer)

1-3
--
--
Not Used

4
LT BLU
1764
Steering wheel position sensor (SWPS) - B

5
--
--
Not Used

6
TAN/BLK
464
Delivered torque

7
GRY
1524
Back up lamp switch input (JL4)

8
--
--
Not Used

9
LT BLU
20
Stoplamp switch input

10
LT BLU
1122
Class 2 Serial Data

11
GRY
1056
+5 volt reference

12
BLK
884
LR Wheel Speed Sensor (High)

13
WHT
883
RR Wheel Speed Sensor (High)

14
TAN
833
RF Wheel Speed Sensor (High)

15
YEL
873
LF Wheel Speed Sensor (High)

16
--
--
Not Used

17
LT BLU
914
SWPS Pulse

18
--
--
Not Used

19
WHT
1765
Brake Pressure Deferential Switch Input ( Without JL4)

19
LT BLU
1659
Brake Pressure Deferential Switch Input (JL4)

20
LT GRN
1763
SWPS A

21
DK BLU
910
Yaw Rate Sensor Input (W/ JL4)

22
LT GRN/BLK
1338
Lateral Accelerometer Input (W/ JL4)

23
LT BLU
1059
SWPS Signal

24
BLK
901
Brake Pressure Sensor Input (W/ JL4)

25
ORN/BLK
463
Requested Torque

26
--
--
Not Used

27
ORN/BLK
556
Sensor Ground

28
RED
885
LR Wheel Speed Sensor (Low)

29
BRN
882
RR Wheel Speed Sensor (Low)

30
DK GRN
872
RF Wheel Speed Sensor (Low)

31
LT BLU
830
LF Wheel Speed Sensor (Low)

32
--
--
Not Used


Bill

skelly1

Bill, from what you have above, that tells me that the difference between the modules should be whether it has JL4 or not. Active Handling. I gave the VIN to both dealers I bought the EBCM's from and they both said I needed the EBCM 09376711. After decoding the VIN, the only way that I can see that they can deduce that it is a JL4 or not is by where in the sequence it was built. In my case, it was the 17,339th car built in 1999. They keep saying that I have active brake control, which I think is wrong. If they really mean Active handling, I don't have that either since I don't have JL4 RPO code. I will get a look at the wiring when I get home from work. Mine should match up with the non JL4 pinout.

Per pin 21 above: If you have JL4, I assume you have a Yaw Rate Sensor. I have the Yaw rate bias code. Does that mean I have JL4?

BigGun

[QUOTE=skelly1;1571994838]Bill, from what you have above, that tells me that the difference between the modules should be whether it has JL4 or not. Active Handling. I gave the VIN to both dealers I bought the EBCM's from and they both said I needed the EBCM 09376711. After decoding the VIN, the only way that I can see that they can deduce that it is a JL4 or not is by where in the sequence it was built. In my case, it was the 17,339th car built in 1999. They keep saying that I have active brake control, which I think is wrong. If they really mean Active handling, I don't have that either since I don't have JL4 RPO code. I will get a look at the wiring when I get home from work. Mine should match up with the non JL4 pinout.

Per pin 21 above: If you have JL4, I assume you have a Yaw Rate Sensor. I have the Yaw rate bias code. Does that mean I have JL4?

[/QUOT

I may be missing something here but, if you press your taction control button the DIC should say traction controll AND active handling off or disengaged, or something like that, if you have active handling. If you don't, it will only tell you that you have turned off traction control. If you have active handling you should also be able to get into competive mode by holding the traction button down for about 5 seconds while stopped. it won't engage the competive mode if you are moving. B/G

srl99

My 1999 vert uses 09360921 which is ABS, TCS and AH {Active Handling}. I believe you have the wrong module for your car.

As it happens, I'm looking for a replacement module if you find out your new one is wrong for sure.

skelly1

Per Bill's post above: The wire going to pin 17 is lt. blu, the wire going to pin 19 is white, the wire going to pin 20 is lt grn, there is no wires going to pins 21 or 22 or 24, the wire going to pin 23 is lt blu. I would say that I do not have active handling on my car, which I already know because there is no JL4 on the glovebox sticker. Now, I just have to determine if the dealerships are using "active handling" and "brake control active" synonymously. If that's the case then I have the wrong module and both dealerships have a defective VIN decoding system.

skelly1

If I have to eat one of the EBCM's I'll let you know and sell it to you for less than I paid.

skelly1

and thanks to all the folks on Corvette Forum C5 tech that helped me fix my TCS problem. It took three times R&R of the EBCM, two different stores, and a little convincing with info from the help on C5 tech to get the correct EBCM for my car. I did not have to eat either one of the wrong EBCM's either. Not sure if they are affiliated or a sponsor of THE Corvette forum but a big thanks to rmsautoparts.com for being patient with me and getting me the right part. Total damage $400.

If you have the TCS 1255 code, start talking RSO codes right away with your parts guy. What I understand is one EBCM is for JL4 and JL9 codes and the other is for except JL4. Don't let them go by your VIN, at least on a 99 FRC. My VIN came up in both systems as being JL4 and JL9 even though it is JL9 only and "except JL4".

After doing the same job 3 times, I found that it is quicker to do the job shortly after driving the car home from work. That way the warm coolant drains quicker after removing the tiny petcock from the radiator. It is much easier with the upper radiator hose removed. Use torx bits that attach to 1/4 inch extensions rather than trying to use the bits that you use with 1/4 inch sockets. That 5th bolt in the bottom middle is deceiving, as who would expect there to be a bolt underneath a rubber grommet that has aluminum over it with a stud with a 10mm nut on it.

Again,

billyward

yes there is a good chance you have the wrong part, i also have the wrong part. i have 16257049 and 807008620 which is a non active handleing module and pump and i need a09376711 module new #19244084 and pump # 10417038. the best way i know is to ck your console for a active handleing botton in front of the storage compartment on the console. it is a round button clearly marked active handleing.

billyward

if you need to call me 803-424-0865. leave a message where you can be reached. does your unit have a V i am sure it does you are rite wrong part, you need A capital V. do you have 4 wheel abs?

SMaster

Does it follow that JL4 would have an active handling button on the console and JL9 wouldn't? Just trying to sort out the differences myself and following your thread.

Sorry I don't have anything productive to add but when you get all this straightened out I'll (we'll) all be a little more educated on the differences and be able to sort them out quicker.

billyward

here is what i know, there is only 1 part that will work in a 1998-2000 front mounted in front of the engine to the lft in front of the power steering pully. also you have to have active handleing. you have to have 4 wheel abs, 4 sencors. the module hast to # 09376711 the new obsilete # is 19244084 the pump # is 10417038. the 5 dealers around here all say the same thing, no other # will work. i have heard that # 0936061 new #19244085 is a good # but every dealer ship i have been to says the same thing. they could be good #`s i don`t know. i wish someone could lift their hood and put the orignal #`s for the 1998 with automatic transmission, front mounted, with active handleing, and 4 wheel abs 4 sencors . this mite help me clear this 2 year nite mare up. my abs unit was stolen before i got the car so i have to go to the deaers around here for the part #`s. thanks!!!!!!!!!!