HELP Loosing communtication with everything
Thread Starter
Supporting Vendor
Joined: May 2010
Posts: 6,819
Likes: 235
From: Bell Buckle, TN
St. Jude Donor '11
HELP Loosing communtication with everything
I have an 02 coupe and yesterday while driving home i lost all gauges, door switches etc. This morning driving it to work it was coming and going.
i checked all the grounds and used some die electric grease on them. I was able to pull the codes that were current and they were:
p1626
U1255
U1096
U1016
SDM
B0026
There were a host of others that were history due to it losing communication with everything on the car. When i try to pull them up when the gauges are dead its not communicating with anything. Im surprised the car still runs.
Any ideas? Im leaving for the C5 C6 bash in the morning.
i checked all the grounds and used some die electric grease on them. I was able to pull the codes that were current and they were:
p1626
U1255
U1096
U1016
SDM
B0026
There were a host of others that were history due to it losing communication with everything on the car. When i try to pull them up when the gauges are dead its not communicating with anything. Im surprised the car still runs.
Any ideas? Im leaving for the C5 C6 bash in the morning.
Tech Contributor
Joined: Jan 2007
Posts: 19,401
Likes: 1,143
From: Dyer, IN
I have an 02 coupe and yesterday while driving home i lost all gauges, door switches etc. This morning driving it to work it was coming and going.
i checked all the grounds and used some die electric grease on them. I was able to pull the codes that were current and they were:
p1626
U1255
U1096
U1016
SDM
B0026
There were a host of others that were history due to it losing communication with everything on the car. When i try to pull them up when the gauges are dead its not communicating with anything. Im surprised the car still runs.
Any ideas? Im leaving for the C5 C6 bash in the morning.
i checked all the grounds and used some die electric grease on them. I was able to pull the codes that were current and they were:
p1626
U1255
U1096
U1016
SDM
B0026
There were a host of others that were history due to it losing communication with everything on the car. When i try to pull them up when the gauges are dead its not communicating with anything. Im surprised the car still runs.
Any ideas? Im leaving for the C5 C6 bash in the morning.
History codes are always helpful..please post them.
Pro
Joined: Apr 2008
Posts: 628
Likes: 4
From: Columbia SC
Did you check the common problem of a bare wire/short in your harness going through the door? Wiggling/shaking the black rubber accordion tube in the door jamb will sometimes re-establish communication, but of course as a long-term solution you have to find and cover the bare wire. More info on this is on the Forum.
Thread Starter
Supporting Vendor
Joined: May 2010
Posts: 6,819
Likes: 235
From: Bell Buckle, TN
St. Jude Donor '11
Did you check the common problem of a bare wire/short in your harness going through the door? Wiggling/shaking the black rubber accordion tube in the door jamb will sometimes re-establish communication, but of course as a long-term solution you have to find and cover the bare wire. More info on this is on the Forum.
Tech Contributor
Joined: Jan 2007
Posts: 19,401
Likes: 1,143
From: Dyer, IN
Did you check the common problem of a bare wire/short in your harness going through the door? Wiggling/shaking the black rubber accordion tube in the door jamb will sometimes re-establish communication, but of course as a long-term solution you have to find and cover the bare wire. More info on this is on the Forum.
Thread Starter
Supporting Vendor
Joined: May 2010
Posts: 6,819
Likes: 235
From: Bell Buckle, TN
St. Jude Donor '11
Ok here is the long list of the codes. Keep in mind none of these were present prior to yesterday.
BCM
U1255 H C
U1016 H C
U1096 H C
PCM
P1626 H C
U1300 H
SDM
B0026 H C
U1000 H
U1300 H
U1016 H C
U1040 H
U1096 H
U1064 H
IPC
U1255 H
U1064 H
U1016 H
U1040 H
U1160 H
U1088 H
U1176 H
HVAC
U1064 H
U1096 H
U1160 H
LDCM
U1255 H
U1064 H
U1016 H
U1096 H
RDCM
U1255 H
U1064 H
U1016 H
U1096 H
RFA
U1000 H
U1255 H
U1064 H
U1096 H
U1016 H
HVAC
U1064 H
U1160 H
U1096 H
U1255 H
TCS
U1300 H
BCM
U1255 H C
U1016 H C
U1096 H C
PCM
P1626 H C
U1300 H
SDM
B0026 H C
U1000 H
U1300 H
U1016 H C
U1040 H
U1096 H
U1064 H
IPC
U1255 H
U1064 H
U1016 H
U1040 H
U1160 H
U1088 H
U1176 H
HVAC
U1064 H
U1096 H
U1160 H
LDCM
U1255 H
U1064 H
U1016 H
U1096 H
RDCM
U1255 H
U1064 H
U1016 H
U1096 H
RFA
U1000 H
U1255 H
U1064 H
U1096 H
U1016 H
HVAC
U1064 H
U1160 H
U1096 H
U1255 H
TCS
U1300 H
Thread Starter
Supporting Vendor
Joined: May 2010
Posts: 6,819
Likes: 235
From: Bell Buckle, TN
St. Jude Donor '11
Ok i checked the door harness/connectors and they are fine. I pulled the BCM and checked all the leads, also pulled the kick panels and checked those grounds. It all looks fine, whatever it is is intermittent. It comes and goes. 
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Safety Car
Joined: Oct 2003
Posts: 3,699
Likes: 16
From: Sun City- Menifee Calif.
Its happened to me twice, 1st time cleared all codes and all was fine, 2nd time took out connectors from between driver door and body saw bare wire and siliconed it , cleared codes again and has been fine for 3-4000 miles now. Crazy thing is car runs fine but nothing else works, Guages, radio AC etc. Seems like its a split second loss of ground More than one on here has mentioned the bare wire in the door connector. 03 Z 
Thread Starter
Supporting Vendor
Joined: May 2010
Posts: 6,819
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From: Bell Buckle, TN
St. Jude Donor '11
Found it! I installed custom seats last week and one of the wires on the seat harness got pinched and was causing all the codes. So glad i found it and can go to the C5/C6 bash tomorrow.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Make sure thatbthe BCM isnt getting wet or damp from moisture /condensation back up from the HVAC air box. If it dry:
Pop out BOTH door accordion tubes. Pull the harness connectors out of the door frame hole. Disconnect the connectors and see if you see any female pins that look like the one in this connector:
The drivers seat connector can cause issues like this also. Check that connector too.. It takes abuse if it isnt secured properly.
There are TWO thin grey connectors to the LEFT of the BCM. Those are the STAR class 2 serial buss terminals. Find the one with FOUR wires.
The TOP of the connector can be removed and should have a shorting strip in the cap. With that connector removed , you isolate both doors and the seat serial data. If you gain normal operation of the other modules, you have an issues in the doors or seat.
Pop out BOTH door accordion tubes. Pull the harness connectors out of the door frame hole. Disconnect the connectors and see if you see any female pins that look like the one in this connector:
The drivers seat connector can cause issues like this also. Check that connector too.. It takes abuse if it isnt secured properly.
There are TWO thin grey connectors to the LEFT of the BCM. Those are the STAR class 2 serial buss terminals. Find the one with FOUR wires.
The TOP of the connector can be removed and should have a shorting strip in the cap. With that connector removed , you isolate both doors and the seat serial data. If you gain normal operation of the other modules, you have an issues in the doors or seat.
Drifting
Joined: Aug 2006
Posts: 1,807
Likes: 4
From: Whitby
I've had the gauges turn off while driving, due to low voltage from an faulty AGM battery.
You can try disconnecting the battery and giving it a full charge over night. This will reset all the computer modules.
Also maybe test the battery and alternator.
You can try disconnecting the battery and giving it a full charge over night. This will reset all the computer modules.
Also maybe test the battery and alternator.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
You found it as I was writing a reply. Great JOB! Read my post and see what I was saying about the seat connector. !!!
"The drivers seat connector can cause issues like this also. Check that connector too.. It takes abuse if it isnt secured properly."
Thread Starter
Supporting Vendor
Joined: May 2010
Posts: 6,819
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From: Bell Buckle, TN
St. Jude Donor '11
Yes Bill i was prowling some of your earlier post and saw where the seat can cause that and remembered i just installed custom seats. Pulled the drivers seat and there was a wire that got pinched. What a relief!! Thanks for all you guys do here on the forum to help everyone out. Without you guys and this forum where would we be? At the dealer..... lol