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Newbie with hi beam issue - '05 PT w/o fog lamps

 
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Old 13 Nov 2017, 01:59 pm
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Default Newbie with hi beam issue - '05 PT w/o fog lamps

Hello everyone, newbie checking in - own a '05 PT Cruiser (base model w/o fog lamps). Very glad to have found this forum.

My question is this...anyone here have an issue with the hi beams not coming on? The indicator light on the dash comes on but the hi beams do not. I've replaced the bulbs, the multi-function switch, and the relay but still no luck. If it's a ground wire issue, where are they located?
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Old 13 Nov 2017, 03:08 pm
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Default Re: Newbie with hi beam issue - '05 PT w/o fog lamps

I would suggest checking fuse #16 under the hood PDC.
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Old 13 Nov 2017, 03:58 pm
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Default Re: Newbie with hi beam issue - '05 PT w/o fog lamps

1st check the fuse. If the fuse is good, you can check for ground issues with a multimeter or a test light. Turn the high beams on and pull the bulb. Put the leads of the meter or light across the plug. If you get don't get voltage or the test light to go on, try moving the ground lead to a clean metal point on the car. If you get voltage or the test light goes on, you have a ground issue. I had a bad ground on the right side and just ran a new ground to a bolt on the frame.
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Old 13 Nov 2017, 05:04 pm
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Default Re: Newbie with hi beam issue - '05 PT w/o fog lamps

Fuse is good. Where exactly are the grounds that pertain to the high beams?
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Old 13 Nov 2017, 06:52 pm
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Default Re: Newbie with hi beam issue - '05 PT w/o fog lamps

Do you have voltage going to fuse #16? If not check C105 connector.

There are separate grounds for the left and right high beam.
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Old 14 Nov 2017, 11:06 am
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Default Re: Newbie with hi beam issue - '05 PT w/o fog lamps

Quote:
Originally Posted by Dewey068 View Post
1st check the fuse. If the fuse is good, you can check for ground issues with a multimeter or a test light. Turn the high beams on and pull the bulb. Put the leads of the meter or light across the plug. If you get don't get voltage or the test light to go on, try moving the ground lead to a clean metal point on the car. If you get voltage or the test light goes on, you have a ground issue. I had a bad ground on the right side and just ran a new ground to a bolt on the frame.
Ok, suspect this is what's going on. Tested voltage at the left (driver's side) connector, got 12v but if I plug the bulb in, it doesn't come on. Cleaned up the connectors on the left side, no change. Where exactly is the ground on the right (passenger) side? Do you have to remove the plastic wheel well covers to access it?
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Old 14 Nov 2017, 11:20 am
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Default Re: Newbie with hi beam issue - '05 PT w/o fog lamps

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Originally Posted by Eydugstr View Post
Ok, suspect this is what's going on. Tested voltage at the left (driver's side) connector, got 12v but if I plug the bulb in, it doesn't come on. Cleaned up the connectors on the left side, no change. Where exactly is the ground on the right (passenger) side? Do you have to remove the plastic wheel well covers to access it?
Have you considered that the power feed is weak and any load on it brings the voltage down? How is the separate ground connections applying to both high beams not working?

There has been threads on the wiring behind the fuse box being burnt causing headlight problems.
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Old 14 Nov 2017, 02:56 pm
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Default Re: Newbie with hi beam issue - '05 PT w/o fog lamps

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Originally Posted by ptcruisersteve View Post
Have you considered that the power feed is weak and any load on it brings the voltage down?
No, I hadn't considered that.

Quote:
How is the separate ground connections applying to both high beams not working?
Because it's on the same circuit.

Quote:
There has been threads on the wiring behind the fuse box being burnt causing headlight problems.
Okay, I'll search that. Keep in mind I'm new to the forum. Tried searching for hi beam issues without much luck before I made the first post
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Old 14 Nov 2017, 03:14 pm
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Default Re: Newbie with hi beam issue - '05 PT w/o fog lamps

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Originally Posted by ptcruisersteve View Post
How is the separate ground connections applying to both high beams not working?
This information came from page 779 of the 01-04 shop manual. 2005 pt cruiser should be the same with this shop manual.

The left high beam head lamp has G103 ground.
The right high beam head lamp has G104 ground.

If it was a ground problem it would be only on one high beam head lamp. Not both. I can't see both grounds going bad at the same time.
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Old 14 Nov 2017, 04:26 pm
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Default Re: Newbie with hi beam issue - '05 PT w/o fog lamps

Quote:
Originally Posted by ptcruisersteve View Post
This information came from page 779 of the 01-04 shop manual. 2005 pt cruiser should be the same with this shop manual.

The left high beam head lamp has G103 ground.
The right high beam head lamp has G104 ground.

If it was a ground problem it would be only on one high beam head lamp. Not both. I can't see both grounds going bad at the same time.
Both are fed (+) from the same circuit (there's only one switch that turns it on the high beams), and that's why I came to that conclusion. If one ground is out (regardless of # of grounds), still breaks the circuit. But hey while you have the shop manual open, does it say exactly where it's located, or if I need to go from underneath the wheel well to get to it? That's what I asked in the earlier post anyway.
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