Charge light stays on

2003 HONDA CRV
223,223 MILES • 2.3L • 4 CYL • 4WD • AUTOMATIC
Avatar
LEN23
  • MEMBER
  • 19 POSTS
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 6:09 AM
Avatar
JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 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)
Attached Media
Attached Media
Aug 19, 2021 at 7:45 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle