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Old 01-24-2015, 11:41 AM   #1
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Question Electrical Troubleshooting

Persistent dead battery in '01 S led me to connect my ammeter to the negative lead and found .9A flowing with nothing on. Traced it to fuse B1 which Bentley says goes to Bridge Point 9/2 and the upper right quadrant of Relay Socket 27 in Relay Panel 1. I found that location but there appears to be nothing there. Any ideas on how I find where my leaky current is going?
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Old 01-24-2015, 12:06 PM   #2
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1 amp is big! Something is getting warm?
1. Remove Fuse B1 - confirm this stops the draining of the battery.
Make sure you can list every component that is connected to B1.Check each component for defects.
2. Replace B1+fully charged battery and first thing in the morning(when it is cool) put your hand on the alternator.If it is warm, you have found the problem.
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Old 01-24-2015, 12:54 PM   #3
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Quote:
Originally Posted by BOOTLEG View Post
Persistent dead battery in '01 S led me to connect my ammeter to the negative lead and found .9A flowing with nothing on. Traced it to fuse B1 which Bentley says goes to Bridge Point 9/2 and the upper right quadrant of Relay Socket 27 in Relay Panel 1. I found that location but there appears to be nothing there. Any ideas on how I find where my leaky current is going?
Pull the fuse. What doesn't work anymore?
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Old 01-24-2015, 04:35 PM   #4
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Fuse B1 sounded familiar to me, then I remembered Wayne's Coolant Flush DIY mentioning it.

Is the car a Tiptronic? That fuse powers a cooling valve for the transmission:


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