Charge light stays on

2003 HONDA CRV

223,223 MILES • 2.3L • 4 CYL • 4WD • AUTOMATIC

LEN23

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19 POSTS
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I just replaced my alternator. my old was on it way out dim and flickering lights voltage jumping erratically. I got new find charge light was on my voltage reading good 13.5 volts drops bit on a load. Did see in the box eld on low charge not sure how relearn or detect the alternator replacement.

Aug 19, 2021 at 1:09 PM

JACOBANDNICKOLAS

CERTIFIED EXPERT
110,175 POSTS

Hi,

Are you checking the voltage at the battery? I ask because 13.5 is good.

I attached a copy of the wiring schematic below for the charging system. Take a look through it. If you are getting 13.5 to the battery and the charge light is on, we will need to investigate the can-bus wiring. Check the fuses that are indicated as well. Make sure there is power to them as well.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Was it doing this prior to replacing the alternator?

Let me know. Also, the pic below was cut in two to make it readable for you. I did overlap the two pics so you can follow from one to the next.

Take care and let me know what you find.

Joe

See pics below.

Images (Click to enlarge)

Aug 19, 2021 at 2:45 PM