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Old Aug 24, 2025 | 06:29 PM
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Default Low voltage

Voltage is registering approx 7 volts. 37000 miles
2002 base convertible.
Alternator ?
thank you
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Old Aug 24, 2025 | 06:41 PM
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Originally Posted by Drhartwig
Voltage is registering approx 7 volts. 37000 miles
2002 base convertible.
Alternator ?
thank you
Registering where? DIC? Alternator? Battery? How are you measuring/
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Old Aug 24, 2025 | 07:51 PM
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On tje dash voltage gauge. Along witj check engine and traction control symbol
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Old Aug 24, 2025 | 10:22 PM
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Originally Posted by Drhartwig
On tje dash voltage gauge. Along witj check engine and traction control symbol
If you have a DMM you can do voltage checks at the alternator, battery, etc.
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Old Aug 25, 2025 | 09:33 AM
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Originally Posted by lucky131969
If you have a DMM you can do voltage checks at the alternator, battery, etc.
I would start with the battery while the car is off. Make sure your terminals at least look clean, not covered up with corrosion.
If you're getting at least 12v at the battery I'd proceed with further testing. If you're not, start by either charging the battery or having it load tested.
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Old Aug 25, 2025 | 09:45 AM
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Another spot to check is where the positive cables land at the fuse box right in front of the battery. Mine had some oily gunk on them preventing good connection that was causing voltage to read a hair low, just enough to start causing problems.
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Old Aug 25, 2025 | 09:48 AM
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Originally Posted by ArcticVert
Another spot to check is where the positive cables land at the fuse box right in front of the battery. Mine had some oily gunk on them preventing good connection that was causing voltage to read a hair low, just enough to start causing problems.
Very good suggesting and often overlooked. Other areas are the grounds.
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Old Aug 25, 2025 | 09:50 AM
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Possible bad ignition switch contact…DIC voltage is taken from the Ignition 1 voltage signal going to the IPC…if you know how to use a DMM connect one lead to battery positive and other lead to IPC fuse 19 when you are seeing 7 volts… you will probably be reading 6 volts or so on the DMM…you are dropping 6 volts across the switch contacts.



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Old Aug 25, 2025 | 10:25 AM
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Does the car crank over and start? If you really only have 7 volts the car will not crank over.
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Old Aug 25, 2025 | 10:31 AM
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Originally Posted by mmartinez
Does the car crank over and start? If you really only have 7 volts the car will not crank over.

Yes, that is correct...we don't know that...happened to me when my switch went bad...7 volts on DIC.
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