Question about 1993 Buick LeSabre
Trace the positive wire from the battery to the starter. From there it should go to the alternator. It sits along the side of the engine and your serpentine belt drives it. Just make certain you disconnect the battery before you start messing with it.
Posted on Jul 11, 2010
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Posted on Jan 02, 2017
Tips for a great answer:
How did you test battery and charging system?
Your charging system is computer controlled. Check for applicable trouble codes. To check codes yourself, at the least you need an obd2 code reader that will check manufacturer specific codes as well as po codes.
Take wire connector loose from generator . The two wires on the left should show battery voltage, do they? What is the voltage spec? This is with key off and no charger hooked up.
The two wires on the right are to and from the computer, To check those, at least, you need a digital multimeter that has a duty cycle or frequency setting, with engine running, should activity on both wires. You have a battery temp sensor that could cause problems.
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The IPC determines that the system voltage is less than 11 volts or greater than 16 volts. The IPC receives a class 2 message from the body control module (BCM) indicating the system voltage
Charge Indicator Always On
Did you perform the Diagnostic System Check for Starting and Charging? yes or no
Go to Step 2 yes
Go to Diagnostic System Check - Engine Electrical no
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