Headlamp issue, on driver side (rh drive) the headlamps are very dim, but still getting power... I replaced the bulbs, and still no luck... i swapped the relays between the lh and rh side, and still the same issue... I had a look at the fuses on the relay block, and they seem to be fine. any other ideas?

The passenger side is grounding threw the drivers side. When you pull the drivers side light the other looses it ground. It is actually grounded threw the bulb. The reason it is dim. It could be the plug. Find the ground and run a new one to the bulb from the body.

Do you know how to do voltage drop testing ? Leave the blubs in there sockets turn the low beams on , measure voltage on the power side , LH low beam yellow with black stripe an for the RH low beam dark blue wire . If you have battery voltage there, power side is good . Then check ground side both are yellow wires , test with lights on . if you see 6 volts , 12 volts .anything more then .03 millivolts you have a ground side problem . The lights ground through the light switch .
Low Beam
Voltage to the headlamp switch is available at all times from the HDLP SW fuse 7 through CKT 1940 (ORN). When the headlamp switch is turned to the HDLP position, the headlamp power relay coil is energized through CKT 352 (WHT). A signal is also sent to the body control module (BCM) that the headlamp switch is ON. When the headlamp switch is in the AUTO or PARK position, the ambient light sensor (located in the right speaker grill) senses either daylight or darkness and sends the signal to the BCM. When the Ambient Light Sensor detects a dark condition, the BCM produces a signal that will energize the headlamp power relay through CKT 352. The relay coil is grounded through terminal F7 connector 2 of the underhood fuse block to CKT 350 (BLK) to G102. When the headlamp power relay is energized the relay supplies power to the LT HDLP and RT HDLP fuses. The RH low beam headlamp receives current through CKT 198 (DK BLU) from the RT HDLP fuse. The LH low beam headlamp receives current through CKT 712 (YEL/BLK) from the LT HDLP fuse. Both headlamp low beam bulbs are grounded by CKT 524 (PPL) through the underhood fuse block to the multifunction switch (low position) contacts through CKT 10 (YEL) to the headlamp grounding relay in the body relay block through the normally closed contacts to CKT 1850 (BLK) to G200.

Check the earth wire on the dim headlight, it has probably come adrift and the one bulb is trying to find an earth through the other bulb, causing them to operate in series at half voltage each.

I am assuming from your description that the low beam operates but is very dim? The headlamp driver / relays are located in the fuse block under the hood. The most likely cause would be excessive resistance (corrosion) on the driver for the left headlamp. A simple continuity test could verify this with a volt/ohm meter. Check from correct cavity in fuse block to headlamp, resistance should be less than 0.5 ohms

It can be one of the following;

The headlamp relays located under the hood and clearly marked(there is one for the right headlamp and one for the left headlamp - swap them and see if the problem goes to the other side. If not - then it is the dimmer switch itself.

Take Care.

If it is the light bulb, meaning the replaceable glass bulb that gets plugged by the wire connector, the clip may not be properly seated on the housing of the bulb. Take the time to match up the tangs of the bulb housing to the hole it plugs in to.

You may have a problem with your headlamp control module (Ballast) , I have seen this before. It is located on headlamp,you will have to remove lamp assy. to replace. Good luck!

go here. we can help you. Also, did you check the headlamp relay in the box under the hood? One relay is in box in front of battery, other is in narrow box along passenger side fender under the hood. swap left & rt headlamp relays to see if it changes.

http://groups.yahoo.com/group/villagerquest/

high beam or low beam? or both of them on one side.

• One low beam headlamp is inoperative

• Central junction box (CJB) fuse 23 (10A) (RH headlamp).
• CJB fuse 25 (10A) (LH headlamp).
• Circuitry.
• CJB.

• Go To Pinpoint Test C .

• One high beam headlamp is inoperative

• Circuitry.
• Headlamp assembly.

• Go To Pinpoint Test D .

• The high and low beam headlamp is inoperative on one side

• Circuitry.

• REPAIR ground circuit 57 (BK).

• Headlamp switch
• Multifunction switch
• Vehicle Security Module

• Central junction box (CJB) fuse(s):
  • 17 (15A)
  • 23 (10A)
  • 25 (10A)
  • 35 (20A)
  • 40 (20A)
• Circuitry
• Headlamp bulbs
• Daytime running lamp (DRL) relay

For some reason, Toyota chooses to wire their headlamps differently than domestic cars, with dual fuses for the headlamps, and a common ground for each headlamp...The reason that the lamp was dim is the bulb was getting power thru a "backfeed" condition, due to the poor ground. The fuse may have blown due to the poor ground, also.