Question about 2003 Pontiac Montana

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Fog lamps dont work. bulbs sockets and fuses fine. the switch is really hard to move. could that be my problem?

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  • my3kids2 Jul 16, 2009

    we changed the relay and its still the same way. i have power to the switch but lights still dont work

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  • Pontiac Master
  • 1,619 Answers

Yes it could be, only way to check would be to remove the switch and use a multimeter to check power to the switch and turn it on, if power exits switch its not the switch its most likely a relay at that point.

Posted on Jul 16, 2009

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I have a 2001 jeep grand Cherokee Laredo that did not come with fog lights but has the plugs for the bulbs. I purchased the fog lights plugged them in but they didn't turn on. I was wondering if there...


If this vehicle came prewired, and all you had to do was plug in the fog lamps, then 50A fuse 7 in the power distribution center would be hot at all times, applying power to 15A fuse 24 and the fog lamp relay. Setting the left multifunction switch to FOG causes the body control module to close the fog lamp relay and turn on the fog lamps. It is possible your Jeep came prewired but without the fuses and relay so a dealer could install them to make your fog lamps work. You can check whether the fuses are in the box and OK and whether the fog lamp is installed or just an empty socket. Once everything has been checked and any missing parts installed, your fog lights should work.

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My fog lights won't turn on Nissan sentra GEX 2002


There are several things that can cause your fog lamps to not work. The fog lamp circuits need to be diagnosed. Your entire fog lamp circuit can be tested at the plug for the fog lamp relay located n the relay box.

PIN 5 on the relay should have battery power at all times. This power comes from Fuse #43 (15 Amp) in the fuse and fusible link box in the engine compartment. If there is power at this pin, the fuse and the circuit between the fuse and the relay is good.

PIN 3 on the relay goes to the fog lamp bulbs. There should be continuity to ground through the bulbs on this pin. If you have continuity to ground, connecting a jumper wire between PIN 5 and PIN 3 should make the fog lamps come on unless there is a short circuit to ground, which will cause Fuse #43 to blow. If there is no continuity to ground on this pin, the problem is either that BOTH fog lamp bulbs are burned out or there is a break in the wire between the relay and the bulbs.

PIN 1 Is the battery power for the primary coil in the relay. This power comes from the headlamp switch and power is only supposed to be present here when the headlamps are on and the dimmer switch is on LOW BEAM. If power is not present at this pin, the problem is a bad headlamp switch or an open circuit between the headlamp switch and the relay.

PIN 2 Is the control circuit for the primary relay coil. The control circuit should have continuity to ground when the fog lamp switch is set to the ON position. If there is no continuity to ground with the fog lamp switch on, the problem is a faulty fog lamp switch, an open between the relay and the fog lamp switch, or an open between the fog lamp switch and ground E37 (right front of engine compartment) and ground F7 (left rear of engine compartment) Please note: This circuit has redundant grounds....if one ground is not making good contact, the other ground can still make the circuit work.

PIN 4 on the relay is not used.

If all of the circuits/pins are working as described above, replace the relay.

That is pretty much it... That is all you really need to know to get your fog lamp circuits diagnosed. Let me know if you need further assistance.

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Check the bulb, socket interface, clean contact points. IF you have a test light or ohmeter, check for power to the socket. If unpowered, check the fuse, if powered check bulb element, and socket condition.

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How do you change the headlight bulb on 1996 olds delta 88? I cannot get to the bulb assembly.



REMOVAL & INSTALLATION

See Figures 1, 2, 3 and 4
  1. Disconnect the negative battery cable.
  2. Remove the fog lamp-to-bumper assembly retaining screws. Be careful not to disturb the adjusting screw.



0900c152800b1fa2.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Fig. 1: Unfasten the 2 Torx® fog light retaining screws (1), making sure not to disturb the adjusting screw (2)
  1. Squeeze the bulb and socket assembly retaining clip prongs inward, and pull the bulb and socket from the rear of the fog lamp.



0900c152800b1fa3.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Fig. 2: Squeeze the bulb and socket retaining clip prongs inward ...


0900c152800b1fa4.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Fig. 3: ... then pull the bulb from the rear of the fog lamp
  1. Unplug the fog lamp electrical connector.



0900c152800b1fa5.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Fig. 4: Unfasten the fog lamp electrical connector
  1. Install the assembly, retaining bolts and connect the negative battery cable.


AIMING

  1. Park the car on a level surface, at least 25 ft. (7.6m) from a wall that is perpendicular to the ground surface. Make sure there is no excess weight in the trunk, unless you normally travel with that amount of weight in the car. Bounce the car a few times to settle the suspension.
  2. Measure and record the distance from the ground to the center of each fog light lens.
  3. Turn the fog lights on and adjust so the hot-spots (lit area of most concentrated intensity) are 4 in. (10cm) below the height of the lenses. The ADJUSTING screw is located at the top right corner of the fog light.

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1 Answer

How do you replace the fog light bulbs on a 2004 buick regal?


Notes FOG LAMP BULB REPLACEMENT - FRONT

REMOVAL PROCEDURE
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  1. Remove the front bumper fascia deflector.
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  1. Rotate the front fog lamp bulb/socket counterclockwise to release.
  2. Remove the fog lamp bulb/socket from the front fog lamp assembly.
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  1. Install the fog lamp bulb/socket to the fog lamp rotating clockwise until fully seated. CAUTION: Refer to Halogen Bulb Caution in Service Precautions.
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  1. Connect the electrical connector to the front fog lamp bulb/socket.
  2. Install the front bumper fascia deflector.

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