Electrical Gremlins!
Le Mans Master
Joined: Mar 2011
Posts: 6,835
Likes: 301
From: Columbia SC
I would go to the 4 wire star connector and remove the top which disconnects the BCM feed to the RDCM. If that stops it then the BCM is suspect. If not the RDCM itself or the door switch has a mind of it's own.
You should have ruled out the LDCM with the swap and the SCM should not be able to cause the problem. Doing what I said prevents the SCM, LDCM, and the BCM from doing it.
There is a reason we can find unless you are on the "out" with Murphy.
Mr. Sam
You should have ruled out the LDCM with the swap and the SCM should not be able to cause the problem. Doing what I said prevents the SCM, LDCM, and the BCM from doing it.
There is a reason we can find unless you are on the "out" with Murphy.
Mr. Sam
Thread Starter
Melting Slicks
Joined: Jul 2010
Posts: 2,503
Likes: 33
From: McGrady NC
St. Jude Donor '15-'16
It's been a busy work week. I'm going to do the buss bar thing first, but what am I getting into if I have to swap out the BCM? Something about reprogramming it? What does my Z06 have that requires additional programming to work?
Thread Starter
Melting Slicks
Joined: Jul 2010
Posts: 2,503
Likes: 33
From: McGrady NC
St. Jude Donor '15-'16
I finally had time to work on this...
I removed the buss bar, cleared all the codes, and went for a drive. Nothing odd happened. Other than the door controls being dead, everything else seemed fine. The passenger window stayed up. Upon returning, I checked the codes again. Nothing. All clear except for a 99-HVAC U1160 that seems to be persistent.
When I switched the key on and off with the footrest panel still removed I could hear the relays clicking in the BCM, which I assume is normal.
Now what?
I removed the buss bar, cleared all the codes, and went for a drive. Nothing odd happened. Other than the door controls being dead, everything else seemed fine. The passenger window stayed up. Upon returning, I checked the codes again. Nothing. All clear except for a 99-HVAC U1160 that seems to be persistent.
When I switched the key on and off with the footrest panel still removed I could hear the relays clicking in the BCM, which I assume is normal.
Now what?
Thread Starter
Melting Slicks
Joined: Jul 2010
Posts: 2,503
Likes: 33
From: McGrady NC
St. Jude Donor '15-'16
I plugged the buss bar back in and buttoned everything up. The driver's door is still dead except for the passenger locks. So if it is the BCM, what's next? I know that O'Reilly has them, but what to I need to do to make it work in my Z06? Is there some programming that has to take place or will it work out of the box?
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Le Mans Master
Joined: Mar 2011
Posts: 6,835
Likes: 301
From: Columbia SC
I plugged the buss bar back in and buttoned everything up. The driver's door is still dead except for the passenger locks. So if it is the BCM, what's next? I know that O'Reilly has them, but what to I need to do to make it work in my Z06? Is there some programming that has to take place or will it work out of the box?
Thread Starter
Melting Slicks
Joined: Jul 2010
Posts: 2,503
Likes: 33
From: McGrady NC
St. Jude Donor '15-'16
The driver's door works after the car sits overnight. Usually. Once I start the car and start moving, such as backing out of the garage slowly, the passenger window rolls down and the driver's door dies. Except for the passenger door lock button. Weird. I'm about ready to let someone else worry about it permanently. I need to see if the door works now that it has been sitting.
Le Mans Master
Joined: Mar 2011
Posts: 6,835
Likes: 301
From: Columbia SC
OK, I would consider the BCM to be the issue.
They are cheap (reman) for 2002 and easy to swap and DIY relearn. If the replacement does not have the same RPOs that can easily be done by a dealer in a few minutes. Or drive over to me and I'll do it for free.
Mr. Sam
PS: The passenger door switch does NOT use the serial bus to work.
They are cheap (reman) for 2002 and easy to swap and DIY relearn. If the replacement does not have the same RPOs that can easily be done by a dealer in a few minutes. Or drive over to me and I'll do it for free.
Mr. Sam
PS: The passenger door switch does NOT use the serial bus to work.
Thread Starter
Melting Slicks
Joined: Jul 2010
Posts: 2,503
Likes: 33
From: McGrady NC
St. Jude Donor '15-'16
I appreciate the offer. If I was closer I would take you up on it.
Thanks for your help. Rock Auto has them for $92.79 plus core. I'll order one today.
Thanks for your help. Rock Auto has them for $92.79 plus core. I'll order one today.
Thread Starter
Melting Slicks
Joined: Jul 2010
Posts: 2,503
Likes: 33
From: McGrady NC
St. Jude Donor '15-'16
Just to confirm: As of today the driver's door functions are dead including the switch illumination. I am ordering a BCM which should fix my problems.
Question: Does the BCM have anything to do with the radio since I coincidentally lost the radio (aftermarket) at the same time?
Question: Does the BCM have anything to do with the radio since I coincidentally lost the radio (aftermarket) at the same time?
Thread Starter
Melting Slicks
Joined: Jul 2010
Posts: 2,503
Likes: 33
From: McGrady NC
St. Jude Donor '15-'16
The aftermarket setup has some sort of small interface devices in each door to bypass the Bose amps. If the driver's door is dead, then power to the amp (?) in that door would probably be dead. I was just thinking that the BCM might fix that.
Thread Starter
Melting Slicks
Joined: Jul 2010
Posts: 2,503
Likes: 33
From: McGrady NC
St. Jude Donor '15-'16
I didn't even realize it was there until I pulled the panel. The original owner had that installed and I didn't know about it when all this started. It was an afterthought to my major issue.
My new BCM will be here Friday. I'll get it installed and run through the relearn procedure. Right now I just want my driver's door controls to work.
My new BCM will be here Friday. I'll get it installed and run through the relearn procedure. Right now I just want my driver's door controls to work.
Thread Starter
Melting Slicks
Joined: Jul 2010
Posts: 2,503
Likes: 33
From: McGrady NC
St. Jude Donor '15-'16
Got the new BCM installed and programmed. No change. Door still dead. So I've checked the wiring in the accordion, switched out the LDCM, and switched out the BCM.
I'm about ready to sell the thing...
Help?
I'm about ready to sell the thing...
Help?
Thread Starter
Melting Slicks
Joined: Jul 2010
Posts: 2,503
Likes: 33
From: McGrady NC
St. Jude Donor '15-'16
I went out and checked the codes. I had a bunch but I assume most were from where I installed the new BCM. BTW, the car runs fine and seems to be programmed correctly.
I still get a bunch of A0-LDCM codes.
B2202 H
B2204 H
B2206 H
B2208 H
B2282 H
B2286 H
B2284 H
U1064H
So I cleared then and five come back immediately as I sit there.
B2202
B2204
B2206
B2208
B2286
I tried to clear them and all came back. Then I tried to clear them individually. Clearing the B2286 code caused the passenger side window to roll down on its own and then the code came back.
The door controls are still dead. No lights or functions except for locking the passenger door.
I'm open to suggestions...
I still get a bunch of A0-LDCM codes.
B2202 H
B2204 H
B2206 H
B2208 H
B2282 H
B2286 H
B2284 H
U1064H
So I cleared then and five come back immediately as I sit there.
B2202
B2204
B2206
B2208
B2286
I tried to clear them and all came back. Then I tried to clear them individually. Clearing the B2286 code caused the passenger side window to roll down on its own and then the code came back.
The door controls are still dead. No lights or functions except for locking the passenger door.
I'm open to suggestions...