2002 Lexus SC 430 top no longer opening

djstatus · Posted at Thu Apr 17, 2008 4:03 pm

Electrical problem
2002 Lexus SC 430 V8 Two Wheel Drive Automatic 60000 miles
----------------------------------------------------------------
Hi,

My SC430's top suddenly will no longer open. The luggage cover and valet button are in the correct positions. Are there any troubleshooting tips you can provide?

Thank You

Service Writer · Posted at Thu Apr 17, 2008 4:27 pm

I would start at the basics first. have you checked the fuses?

Have the codes been checked?

djstatus · Posted at Thu Apr 17, 2008 4:31 pm

Hi, thanks for the prompt reply. I checked the fuses in the trunk panel there are two 20's that look like they are fine. Apologies for not understanding, which codes are you referring to?

Thanks!

Service Writer · Posted at Thu Apr 17, 2008 4:40 pm

THere are codes stored in the pcm that will give DTC or Diagnostic Trouble Codes. A scanner is required to get them out of the pcm. However we may be able to get through this otherwise.

Check these fuses:

They are located on the passenger side.

In the #1 jusnction block.

djstatus · Posted at Thu Apr 17, 2008 4:49 pm

Ok I checked those two and they look to be ok.

Thanks

Service Writer · Posted at Thu Apr 17, 2008 4:50 pm

Also check all of these in the trunk:

djstatus · Posted at Thu Apr 17, 2008 4:58 pm

all those seem to be good as well.

thx

Service Writer · Posted at Thu Apr 17, 2008 5:06 pm

There are 55 different trouble codes associated with this system as it is complex:

These are the vairious components. The trouble codes give a start to diagnosing this system and after looking at this, I need to know them.

Maybe autozone can read them, as they do this for free or may need a special scanner for the Lexus, not sure on this. But without codes the field is too large to go after.

djstatus · Posted at Thu Apr 17, 2008 5:09 pm

Thank you, your assistance is tremendously appreciated!

Thanks again I will see what i can find.

Service Writer · Posted at Fri Apr 18, 2008 12:13 pm

I found somthing that may help. I found a technical service bulletin that mentions that if a request is made to open the luggage door while the hardtop is in operation, the operation will be cancelled. IT will be then necessary to manually finish the started operation. I would try to manually do this and see if it resets the system. After it is fully opened and closed it should then be enabled.

If you need the procedure to do this let me know.