CBR 600F 1987 - 1990 CBR 600F Forum

Parasitic draw

  #1  
Old 03-22-2015, 08:35 PM
Emmanuel Lind Chrisalos's Avatar
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Default Parasitic draw

Hi all, Happy new season for all of thous that the motorcycle season has started.
Well I'm at it again. I am having some electrical problems, my battery is getting drained when the bike is not in use. I have manage to narrow it down to the regulator rectifier. I did a step by step check following the instruction of the manual and removing everything and then connecting one by one. Conclusion, as soon i connect the rr i get a reading of 12v dc. My thought is that the draw is between the start relay and the rr. Any thoughts and tips on the matter would help a lot. Thanks in advance
 

Last edited by Emmanuel Lind Chrisalos; 03-22-2015 at 09:09 PM.
  #2  
Old 03-23-2015, 07:34 PM
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The RR should not be drawing any current when the bike is off. Sounds like it is possibly bad. BTW 12VDC is the voltage. You should be looking for Amperage. A standard draw with everything off should be .01A to .00A Anything higher than .25A will kill the battery in short order.
 
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Old 03-24-2015, 09:21 AM
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Originally Posted by drakito View Post
The RR should not be drawing any current when the bike is off. Sounds like it is possibly bad. BTW 12VDC is the voltage. You should be looking for Amperage. A standard draw with everything off should be .01A to .00A Anything higher than .25A will kill the battery in short order.
The Honda manual says
"LEAKAGE INSPECTION
Check for battery voltage leakage before making the regulated voltage inspection. Turn the ignition switch off and disconnect the battery negative cable from battery. Connect the voltmeter between the negative cable and the negative battery terminal.
1. The voltmeter should indicate 8V with the ignition switch off.
2. Disconnect the regulator/rectifier 3P and 4P connectors. The voltmeter should indicate 0V with the ignition switch off.
If there is Ok for step 1 and 2, there is no leakage"

The Haynes manual refers to mA tho its for the US 600 models
 

Last edited by Emmanuel Lind Chrisalos; 03-24-2015 at 09:28 AM.
  #4  
Old 03-25-2015, 07:12 PM
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I see, it is showing the voltage drop across the system. Amperage is a harder test to do and requires more work.

the12volt.com will help with how to use the meter and why it works the way it does.

As to your reading of 12v. If I am understanding the screwy instructions correctly, it should read 8 volts. Therefore it is out of spec and needs replacement.
 
  #5  
Old 03-25-2015, 08:19 PM
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Originally Posted by drakito View Post
If I am understanding the screwy instructions correctly, it should read 8 volts. Therefore it is out of spec and needs replacement.
I assume that you are referring to the multimeter?
By the way about replacing the rr it was my first thought to and i did. Got the same readings all the same
 
  #6  
Old 03-25-2015, 10:57 PM
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Do you have a 12v test light?

Put the test light in series between the positive cable and the battery. If it lights up, that's your draw. The brighter, the larger the draw. Start pulling fuses one at a time until the light goes dim or out. Then look at that circuit for the problem by unplugging things until the light goes out again.
 
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