I have an electrical issue with my 2004 Saturn Ion, and with everything shut down, I figured I’d try to fix it myself, if possible.
It started out with what appeared to be my front, left (driver-side) turn signal going out. Easy – I replaced the bulb. But that didn’t work. I checked the connector at the light and it seemed fine. So I just hand-signaled for a while.
Then, after a little while, the dashboard’s left turn-signal indicator started lighting up whenever I pressed the brake.
So I decided to do a full check of the lights, and they are all sorts of messed up (see below).
I’m guessing there is an electrical problem somewhere, with a switch or a relay or a wire. I check the fuses, and they all appeared good.
I understand I will probably have to check throughout the car to find the problem, but I was hoping I might get some guess on where to start based on the symptoms, which I will list below. Any suggestions would be greatly appreciated.
I do have a Haynes Repair Manual with the wiring diagrams, so I should be able to follow along with that.
Run-down of which bulbs function, when. (Apologies in advance, I don’t know for certain what each bulb is called and couldn’t find a clear explanation anywhere – so some of my terminology may be inaccurate). Also, it’s possible I wrote some of this down wrong.
Left (driver) Front
- Inner bulb (main headlamp)
—Works under all circumstances (other than headlights turned off) - Outer bulb (turn signal [and parking light, I think])
—Works when headlights are on alone
—Turn signal – does not flash
—Hazards – does not flash
Right (passenger) Front
-Everything works fine
Left (driver) Rear
- Top bulb
—Lights when headlights are on
—Does not get brighter when brake applies (not sure it is supposed to, though)
—Turn signal – flashes fast
—Hazards – works - Middle bulb
—Lights when headlights are on
—Gets brighter when brakes applied – if headlights are off, see note* - Bottom bulb (back-up light, I think)
—Doesn’t work (might just be burned out coincidently, I haven’t tried changing it) - *All – when headlights are on, all left rear lights go out when brake applied
Right (passenger) Rear
- Top bulb
—Lights when headlights are on
—Does not get brighter when brakes applied
—Turn signal – works normally
—Hazards – works normally - Middle bulb
—Lights when headlights are on
—Gets brighter when brakes applied - Bottom
—Lights up when in Reverse
Thanks again in advance for any help!
Kevin
PS – If you think I’m going to need any electrical tool other than a multimeter, let me know.