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2006 Buick Lucerne cx

Smokinp
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4 years 2 months ago #49836 by Smokinp

2008 Buick Lucerne cx was created by Smokinp

Needs some help have a 2008 Buick Lucerne cx V6 replaced the AC evaporator after reinstalling everything the car has a couple of issue the scanner code UO104
body control module won't communicate with the ECM.
will not crank, no dome light, turn signals, trunk won't open and key font not working.
I re-checked all the electrical connectors and fuse tested good.
Thanks for the help.

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Cheryl
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4 years 2 months ago #49865 by Cheryl

Replied by Cheryl on topic 2008 Buick Lucerne cx

What is your resistance at the data link connector at pins 6 and 14 of the dlc. Should be 60

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Smokinp
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4 years 2 months ago #49868 by Smokinp

Replied by Smokinp on topic 2008 Buick Lucerne cx

I will check the pins out tomorrow

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Smokinp
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4 years 2 months ago - 4 years 2 months ago #49877 by Smokinp

Replied by Smokinp on topic 2008 Buick Lucerne cx

looks like it is 64 ohms.

Last edit: 4 years 2 months ago by Smokinp.

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Cheryl
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4 years 2 months ago #49878 by Cheryl

Replied by Cheryl on topic 2008 Buick Lucerne cx

Can you talk to all the modules on the car with the scan tool? Except for the bcm? If so do you have a wiring diagram? Or I can get one tomorrow.

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Smokinp
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4 years 2 months ago #49879 by Smokinp

Replied by Smokinp on topic 2008 Buick Lucerne cx

Yes, it communicates with all the modules except the BCM I could not find a wiring diagram. Thanks again

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Cheryl
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4 years 2 months ago #49880 by Cheryl

Replied by Cheryl on topic 2008 Buick Lucerne cx

Okay you going to need to check powers and grounds. When we find a diagram.

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jreardon
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4 years 2 months ago - 4 years 2 months ago #49884 by jreardon

Replied by jreardon on topic 2008 Buick Lucerne cx

Is there a voltage drop across the bcm fuse? Should be if the BCM's getting juice. 0 drop means no current flow, expecting a couple mV, just a quick and fast test.
Check out connector x326 and check off what's NOT working with all the wires going through that thing.

File Attachment:

File Name: BCMPowerGround.pdf
File Size:42 KB

File Attachment:

File Name: X326.pdf
File Size:53 KB

File Attachment:

File Name: more.pdf
File Size:788 KB

Last edit: 4 years 2 months ago by jreardon. Reason: added more

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Smokinp
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4 years 2 months ago #49908 by Smokinp

Replied by Smokinp on topic 2008 Buick Lucerne cx

Okay, I will start on this tomorrow

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Smokinp
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4 years 1 month ago #49990 by Smokinp

Replied by Smokinp on topic 2008 Buick Lucerne cx

Thanks for your help this is what we came up with Need a rear fuse panel wire diagram using a test light on the negative side no light switch to the positive side I get a light on F41, 42, 43 and 44 fuses.

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jreardon
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4 years 1 month ago #49997 by jreardon

Replied by jreardon on topic 2008 Buick Lucerne cx

rear fuse block, pwr, gnd dist, courtesy lamps, exterior lamps, starting circuit, trunk release, door locks, radio

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File Name: more_2021-07-13.pdf
File Size:1,220 KB

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Smokinp
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4 years 1 month ago #50022 by Smokinp

Replied by Smokinp on topic 2008 Buick Lucerne cx

Thanks, you just made my day will work on it this weekend give you an update as to what we find

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4 years 1 month ago #50084 by Smokinp

Replied by Smokinp on topic 2006 Buick Lucerne cx

Sorry I just found out the I had sent the wrong year it is a 2006 Buick Lucerne cx could you please send me the same as you did for the 2008 rear fuse block

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jreardon
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4 years 1 month ago #50095 by jreardon

Replied by jreardon on topic 2006 Buick Lucerne cx

File Attachment:

File Name: 2006BuickL...neCX.pdf
File Size:2,187 KB

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Smokinp
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4 years 1 month ago #50096 by Smokinp

Replied by Smokinp on topic 2006 Buick Lucerne cx

Thanks again..

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