Lights nor working properly

Hi and thanks for using 2CarPros. Com.

If a fuse was the problem, they would not have worked. I have to be honest, these vehicles have what is called a TIPM which stands for totally integrated power module AKA an IPM integrated power module. They are pron to fail. What most commonly happens is the tiny pin connectors (tiny because there are so many of them) corrode or break. The results are things like you are describing.

Here is a description of the aforementioned component and what it controls:

INTEGRATED POWER MODULE
The Integrated Power Module (IPM) is mounted in the engine compartment, next to the battery. The IPM houses all fuses and relays for the vehicle.

Fuse and relay information is laser etched inside surface of the hinged cover. As well as housing fuses and relays, the IPM is an electrical control and interface center in the engine compartment. It provides and distributes information to the rest of the vehicle. The IPM controls the following features:

CONTROLLED POWER FEEDS
- BTSI
- EATX module power
- Front airbag system
- Front and rear marker lamps
- Front and rear park lamps
- Front fog lamps
- Headlamp power (High/Low beam)
- License plate lamp

RELAY CONTROLS
- Accessory relay
- Door node relay
- EBL relay
- Front and rear blower relay
- Front wiper HI/LOW relay
- Front wiper ON relay
- Horn relay
- Run relay
- Fuel pump relay

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If you noted, it supplies power to the headlights. Based on your description, it sounds like it is failing. The only way to be sure is to disconnect everything and inspect the connections.

The TIPM is located near the battery. There will be fuses at the top of it. If you want to check the connections, the following directions will help. Note: There are several wiring harnesses going to it. The headlights are powered through the gray 26 pin connector (IPM Module C5). I have attached a picture of it. You need to check the condition of two of the pin connectors. Pins 18 and 22 are related to the high beam. Make sure they are not corroded, broken, bent, or pushed back into the plug.

Make sure you disconnect the battery before you do this. First disconnect the negative terminal and then the positive. Once both are disconnected from the battery, using a zip tie, attach the two terminals together and let them sit for a while ( approximately thirty minutes) to discharge any stored power.

When you put things back together, plug all electrical components in where they belong prior to reconnecting the battery. When reconnecting the battery, positive is first and then connect the ground.

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I hope this helps. Let me know if you have other questions or need help with anything.

Take care,
Joe