this is going to be interesting
Shocks Inoperative 80mph Maximum Speed
Thread Starter
Le Mans Master
Joined: Aug 2005
Posts: 7,890
Likes: 0
From: FL
Shocks Inoperative 80mph Maximum Speed
The other day I was doing some work underneath the car, I accidentally bumped off the connection going to the EBCM. I found out why it easily came off. The handle on top that locks it into place wasnt able to lock down because a pipe from the supercharger was blocking it. So I removed the plastic handle piece and shaved off the obstructive corner and put it back. Locked the connector into place and started the car and got the shocks inoperative warning as well as service ride control and service engine soon. I disconnected my battery over night and the same thing this morning. How could have taking out a connector and plugging it back in done anything? Is there a certain process I have to go through now to retrain it or get rid of the codes?
Thanks for any input here
Thanks for any input here
Racer
Joined: Dec 2007
Posts: 354
Likes: 4
From: Grand Ledge Michigan
Just a guess, but how about if the shocks really are inopperative??
Did you go through your grounds?
I would look at grounds near the spot you were meddling with. It may not be the plug at all.
Was there a previous owner who had the plug unplugged for a reason?
Did you go through your grounds?
I would look at grounds near the spot you were meddling with. It may not be the plug at all.
Was there a previous owner who had the plug unplugged for a reason?
Thread Starter
Le Mans Master
Joined: Aug 2005
Posts: 7,890
Likes: 0
From: FL
Well while the message is displaying on the DIC I know the shocks ARE inoperative!
I unplugged the connector to the ebcm on accident while I was working and when I noticed I plugged it back in and tightened everything down. I dont think there are any grounds in that area, it's an 01 so the ebcm is right in the front of the engine. No the previous owner didnt do anything the car was fine until I was routing a boost hose in the area.
I unplugged the connector to the ebcm on accident while I was working and when I noticed I plugged it back in and tightened everything down. I dont think there are any grounds in that area, it's an 01 so the ebcm is right in the front of the engine. No the previous owner didnt do anything the car was fine until I was routing a boost hose in the area.
Team Owner
Joined: Sep 2001
Posts: 23,283
Likes: 906
From: Lake Elsinore, CA
That is an F45 error message as the standard shocks don't have any electrical connections to feedback to the BCM. Do you have the F45 suspension package? If so, check all the electrical connectors to the shocks to ensure they are tight. Also, check the console switch - if it's between settings, it will generate an error message.
Thread Starter
Le Mans Master
Joined: Aug 2005
Posts: 7,890
Likes: 0
From: FL
That is an F45 error message as the standard shocks don't have any electrical connections to feedback to the BCM. Do you have the F45 suspension package? If so, check all the electrical connectors to the shocks to ensure they are tight. Also, check the console switch - if it's between settings, it will generate an error message.
Would one shock being disconnected throw this message? Would the ebcm being disconnected through this message?
Thank you!
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Team Owner
Joined: Sep 2001
Posts: 23,283
Likes: 906
From: Lake Elsinore, CA
A faster way to diagnose this issue would be to collect the trouble codes from the DIC and post them here. Then I can determine what the next step is, if there is one, as it could be a temporary error message that was generated by a transient or intermitent occurance. The Electronic Brake Control Module (EBCM) module is not directly associated with the Electronic Suspension Control (ESC) module that oversees operation of the suspension system. THE ESC module is in the rear driver storage compartment.
The ESC controls the damping mode selection according to the following factors:
The ESC module evaluates these inputs in order to separately control the solenoid valve position in each of the shock absorbers. If you look at the inner wheel well, you'll see a position sensor attached to the body and the control arm. That sensor feeds back to the ESC which uses the data to adjust that particular shock.
The ESC controls the damping mode selection according to the following factors:
- The vehicle speed
- The chassis pitch input
- The steering position
- The body to wheel displacement
- The ride control switch position
The ESC module evaluates these inputs in order to separately control the solenoid valve position in each of the shock absorbers. If you look at the inner wheel well, you'll see a position sensor attached to the body and the control arm. That sensor feeds back to the ESC which uses the data to adjust that particular shock.
Thread Starter
Le Mans Master
Joined: Aug 2005
Posts: 7,890
Likes: 0
From: FL
A faster way to diagnose this issue would be to collect the trouble codes from the DIC and post them here. Then I can determine what the next step is, if there is one, as it could be a temporary error message that was generated by a transient or intermitent occurance. The Electronic Brake Control Module (EBCM) module is not directly associated with the Electronic Suspension Control (ESC) module that oversees operation of the suspension system. THE ESC module is in the rear driver storage compartment.
The ESC controls the damping mode selection according to the following factors:
The ESC module evaluates these inputs in order to separately control the solenoid valve position in each of the shock absorbers. If you look at the inner wheel well, you'll see a position sensor attached to the body and the control arm. That sensor feeds back to the ESC which uses the data to adjust that particular shock.
The ESC controls the damping mode selection according to the following factors:
- The vehicle speed
- The chassis pitch input
- The steering position
- The body to wheel displacement
- The ride control switch position
The ESC module evaluates these inputs in order to separately control the solenoid valve position in each of the shock absorbers. If you look at the inner wheel well, you'll see a position sensor attached to the body and the control arm. That sensor feeds back to the ESC which uses the data to adjust that particular shock.
I am going to search on how to pull codes and list them.
Thank you for your help.
Thread Starter
Le Mans Master
Joined: Aug 2005
Posts: 7,890
Likes: 0
From: FL
I had felt the carpet a couple days ago and it felt damp but nothing too terrible to so I didn't go further but to open up the trunk to let it vent and dry. Tonight I removed the storage cover and there was a light film of mold that had grown on it and things are damp in the area. The esc module seems dry and all the connectors are tight on it.
Here are all of the codes my car had. I didnt catch the prefixes I hope I didnt have to as it was moving too fast.
c1226
c1283
rtd no comm.
u1096
b2238
b2282
b2284
u1064
u1096
b2283
b2285
u1096
c2100
c2110
d2115
u1000
u1255
u1064
u1096
u1096 was listed 4 separate times and u1064 2 times, not sure if those are different codes when it lists it twice
Here are all of the codes my car had. I didnt catch the prefixes I hope I didnt have to as it was moving too fast.
c1226
c1283
rtd no comm.
u1096
b2238
b2282
b2284
u1064
u1096
b2283
b2285
u1096
c2100
c2110
d2115
u1000
u1255
u1064
u1096
u1096 was listed 4 separate times and u1064 2 times, not sure if those are different codes when it lists it twice
Team Owner
Joined: Sep 2001
Posts: 23,283
Likes: 906
From: Lake Elsinore, CA
None of those codes are relevant to the suspension control; however, the "rtd no comm." indicates the Real-Time Damping system - the F45 suspension control module - lost communication with the serial data bus.
You should take down the entire code when you read them from the DIC. The C indicates that it's current while an "H" indicates it's history and not currently active.
The U codes are explained here:
DIC Onboard Diagnostics Show DTCs U1016, U1064 and U1096 in History #PI00043 - (Jun 19, 2002)
DIC Onboard Diagnostics Show DTCs U1016, U1064 and U1096 in History
.
When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms.
Condition/Concern:
DTCs U1016, U1064 and U1096 may be present when scrolling through the onboard diagnostics via the instrument cluster Driver Information Center (DIC).
Recommendation/Instructions:
This is a normal software function as long as the DTCs have a history status upon ignition cycling. No repair attempts should be made.
Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.
Here are the others:
C1226 Wheel Speed Sensor Circuit
C1283 VSES Sensors Uncorrected
B2238 Door Lock Switch Circuit
B2282 Battery #1 Circuit
B2284 Battery #1 Circuit
B2283 Battery #1 Circuit
B2285 Battery #2 Circuit
C2100 ?
C2110 ?
D2115 ?
There are a host of RTD codes that could be set but your list contains none of those codes. It appears, at this point, that your control module has lost communication with the main serial bus You can start by checking the connectors and the module (perhaps the moisture damaged it) - if you don't find an obvious issue, post again and I can send you the diagnostic from the manual.
You should take down the entire code when you read them from the DIC. The C indicates that it's current while an "H" indicates it's history and not currently active.
The U codes are explained here:
DIC Onboard Diagnostics Show DTCs U1016, U1064 and U1096 in History #PI00043 - (Jun 19, 2002)
DIC Onboard Diagnostics Show DTCs U1016, U1064 and U1096 in History
.
When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms.
Condition/Concern:
DTCs U1016, U1064 and U1096 may be present when scrolling through the onboard diagnostics via the instrument cluster Driver Information Center (DIC).
Recommendation/Instructions:
This is a normal software function as long as the DTCs have a history status upon ignition cycling. No repair attempts should be made.
Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.
Here are the others:
C1226 Wheel Speed Sensor Circuit
C1283 VSES Sensors Uncorrected
B2238 Door Lock Switch Circuit
B2282 Battery #1 Circuit
B2284 Battery #1 Circuit
B2283 Battery #1 Circuit
B2285 Battery #2 Circuit
C2100 ?
C2110 ?
D2115 ?
There are a host of RTD codes that could be set but your list contains none of those codes. It appears, at this point, that your control module has lost communication with the main serial bus You can start by checking the connectors and the module (perhaps the moisture damaged it) - if you don't find an obvious issue, post again and I can send you the diagnostic from the manual.
Thread Starter
Le Mans Master
Joined: Aug 2005
Posts: 7,890
Likes: 0
From: FL
This is the module that is in the drivers storage area correct?
I've opened the trunk and let it air out in the garage, it appears that the ecu got wet and the moisture has hurt it. Maybe once it dries out it will work again?
I will go back and write down which of these codes are H or C
Drifting
Joined: Feb 2002
Posts: 1,630
Likes: 125
From: Park Ridge Illinois
2022 C5 of the Year Finalist - Modified
2021 C5 of the Year Finalist - Modified
I had that same error message when I converted my F45 system to the new F55. Two wires were not connected right and I couldn't go over 80mph. It sounds like you may need a new F45 ecm if it got wet. I might still have mine if you need one. I sold my shocks years ago and have to check if I still have the F45 ecm.
Thread Starter
Le Mans Master
Joined: Aug 2005
Posts: 7,890
Likes: 0
From: FL
That is a good offer, I'm right now airing out the car in hopes that it'll dry and start working again, if that is even the problem!
I cant believe trying to be prepared with distilled water got me in this case! I dont even drive the car.
Also I had heard that distilled water didn't cause mold and that is not the case as the bottom of the storage cover was moldy.
Would the 98 and 01 ecms be the same for the F45 system?
Thank you
I cant believe trying to be prepared with distilled water got me in this case! I dont even drive the car.
Also I had heard that distilled water didn't cause mold and that is not the case as the bottom of the storage cover was moldy.
Would the 98 and 01 ecms be the same for the F45 system?
Thank you
Last edited by IDM; Dec 19, 2008 at 09:30 PM.
Thread Starter
Le Mans Master
Joined: Aug 2005
Posts: 7,890
Likes: 0
From: FL
Hi Patches
I kept the trunk open for 4 days in the garage and when I turn the key to the ON position it still says shocks inoperative!
Does the no communication mean that the ecu is probably messed up from the moisture?
If you could send me the diagnostic portion for this Id appreciate it
I kept the trunk open for 4 days in the garage and when I turn the key to the ON position it still says shocks inoperative!
Does the no communication mean that the ecu is probably messed up from the moisture?
If you could send me the diagnostic portion for this Id appreciate it