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Change headlamp Changed lamp but no light

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Check for power at headlamp socket with tester. If no power, check fuses. If power but still no lamp check ground wire connection with tester. If all check out you have a bad lamp bulb.

Posted on Dec 04, 2014

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Posted on Jan 02, 2017

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2 Answers

How to turn off the daytime running lights on my 2005 chevy equinox


you have to change daytime running lights module.For now remove cable from battery +

Mar 19, 2016 | Cars & Trucks

1 Answer

No low beam. Good high beam. No day lights. What's wrong?


No on the fuse . The LH HDLP and RH HDLP fuse in the fuse block - under hood, supply battery positive voltage to both low and high beam lamps at all times. For manual operation, when the headlamp switch is in the ON position, the headlamp switch supplies ground directly to the headlamps and to the body control module (BCM) on the headlamp low or high beam signal circuit, depending on the position of the headlamp dimmer switch. The BCM uses this signal to determine if the conditions are present to illuminate the daytime running lamps or park lamps.
The headlamps may be turned on 2 different ways. First, when the driver places the headlamp switch in the ON position, for manual operation. Second, with the headlamp switch placed in the OFF position activating automatic lamp control (ALC).For ALC operation, the BCM receives a signal from the ambient light sensor indicating a low or high ambient, outside, light level. Under low light conditions the BCM grounds the headlamp relay control circuit energizing the headlamp control relay. The now closed relay supplies ground through the headlamp switch to the headlamps and the BCM on the headlamp low or high beam signal circuit, depending on the position of the headlamp dimmer switch. When the BCM grounds the headlamp relay control circuit it also grounds the park lamp relay control circuit illuminating the park lamps. The headlamp relay is grounded at G203.
Daytime Running Lamps (DRL)
The low beam headlamps operate at reduced intensity when in daytime running lamps (DRL) mode. The ground circuit to the switch side of the DRL relay has a resistor in-line to reduce the intensity of the low beam headlamps for DRL operation. The body control module (BCM) receives a signal from the ambient light sensor indicating a low or high ambient, outside, light level. Under daylight conditions the BCM grounds the DRL relay control circuit energizing the DRL control relay. The now closed relay supplies ground directly to the low beam headlamps and to the BCM on the headlamp low beam signal circuit. The low beam headlamps now illuminate with reduced intensity. The DRL relay is grounded at G203. Any time the headlamps are illuminated the DRL will not illuminate. Manual park lamps do not effect DRL operation.

Feb 23, 2016 | 2005 Chevrolet Equinox LS

1 Answer

Why aren't parking lights working?


Park lamp fuse 20amp located in the under hood fuse box .DRL control module
Daytime Running Lamps (DRL) Control Module
Right of the steering column, behind the IP
Park, Sidemarker, Tail and License Lamps
Voltage is applied continuously to the PARK fuse to the headlamp and the instrument panel (IP) lamp dimmer switch through CKT 1340.
When the headlamp and the (IP) lamp dimmer switch is in the PARK or HEAD position, voltage is applied to CKT 9 thus activating the following lamps:
• The park lamps
• The side marker lamps
• The tail lamps
• The license lamps
The park/turn lamps are the only lamps that do not activate yet receive a current from CKT 9. The park/turn lamps do not activate because the voltage drop across the front side marker lamps is much higher than that across the turn lamp filaments Step
Action
Normal Result(s)
Abnormal Result(s)*

1
Turn the headlamp/instrument panel (IP) lamp dimmer switch to the PARK position.
The following lamps light:
• The license plate lamps
• The taillight lamps
• The front side marker lamps (Domestic)
• The front parking lamps (Domestic)
The headlamp position lamps (Export)
Refer to Park Lamps Inoperative
Park Lamps Inoperative
Step
Action
Value(s)
Yes
No

1
Inspect the PARK LP fuse.
Is the fuse open?
--
YES - Go to Step 2
NO - Go to Step 3

2
Repair a short to ground in CKT 1340.
Is the repair complete?
--
Go to Exterior Lights System Check
--

3
Turn the headlamp/instrument panel (IP) lamp dimmer switch to the PARK position.
Use a test light in order to backprobe the headlamp/IP lamp dimmer switch harness connector between terminal R and ground.
Did the test lamp light?
--
Go to Step 7
Go to Step 4

4
Use a test light in order to backprobe the headlamp/IP lamp dimmer switch harness connector between terminal O and ground.
Did the test lamp light?
--
Go to Step 5
Go to Step 6

5
Replace the headlamp/IP lamp dimmer switch. Refer to Headlamp Switch Replacement .
Is the repair complete?
--
Go to Exterior Lights System Check
--

6
Repair the following conditions in CKT 1340 between the PARK LP fuse and the headlamp and the IP lamp dimmer switch harness connector terminal O:
• A faulty connection
• An open circuit
Is the repair complete?
--
Go to Exterior Lights System Check
--

7
Repair the following conditions in CKT 9 between the headlamp and the IP lamp dimmer switch harness connector terminal R and S204:
• A faulty connection
• An open circuit
Is the repair complete?
--
Go to Exterior Lights System Check

Feb 18, 2016 | 1999 Pontiac Montana

3 Answers

How do I turn on fog lights on a Cadillac escalade esv 09


If it is a turn knob for lights just pull out on knob

Apr 27, 2015 | 2009 Cadillac Escalade ESV

1 Answer

Headlights won't come on together on 2002 dodge caravan. Change the CCM & ECM no change, any other suggestions? Thank you


DIAGNOSIS AND TESTING - HEADLAMP

When a vehicle experiences problems with the headlamp system, verify the condition of the battery connections, fuses, charging system, headlamp bulbs, wire connectors, relay, high beam switch, dimmer switch, and headlamp switch. Refer to the appropriate wiring information.
Each vehicle is equipped with various lamp assemblies. A good ground is necessary for proper lighting operation. Grounding is provided by the lamp socket when it comes in contact with the metal body, or through a separate ground wire.
When changing lamp bulbs check the socket for corrosion. If corrosion is present, clean it with a wire brush.
When it is necessary to remove components to service another, it should not be necessary to apply excessive force or bend a component to remove it. Before damaging a trim component, verify hidden fasteners or captured edges are not holding the component in place. Don't replace parts unless you test an your sure that is the problem. Check the basic's first ! Then find a wiring diagram an see what all is involved , connectors , grounds , power an do a voltage drop test on the circuit to find the problem !An a scan tool would come in handy as well ,to do bi-directional tests !

HEADLAMP SYSTEM

The configuration of the headlamp system of headlamps, park lamps and fog lamps is determined by the BCM. The BCM -body control module determines the lighting configuration as a result of the inputs from the ignition switch, headlamp switch and multi-function switch. A PCI bus-serial data communication network is transmitted from the BCM to the FCM to enable the necessary drivers to set the illumination configuration. Four wires are connected between the headlamp switch and the BCM. The first wire contains information regarding the position of the headlamp switch (Off, Automatic Headlamps, Automatic Headlamp switch fog, Park with Fog, Head, or Head with Fog Lamps). The second wire contains information regarding the position of the dimmer switch (Dome Lamp, Daytime Brightness, Dimming Level or Off). The third wire is a dedicated signal return (ground) wire. The fourth wire provides power to the front fog lamp indicator. You should take this to someone who knows what's up rather then just replacing parts !

Jan 30, 2015 | Dodge Cars & Trucks

1 Answer

Grand Prix 2003 first no running lights tail lights or cluster lights. All fuses were good. Changed out the small box under the steering column. Not the chime box. After doing that I had running lights...


Daytime running lamps control module. Fuse #37 - inside the passenger compartment or under hood fuse box ? Do you know how to use a volt meter an wiring diagram to find electrical problems ? You have a direct short to ground or fuse #37 wouldn't blow. Underhood fuse box fuse # 37 is for the park lamps .Supply's B+ voltage to the daytime running lamps module an the headlamp switch plus 37
PARK LP Fuse
20A
Headlamp Switch, Body Control Module (BCM), and Vehicle Interface Unit (VIU)...
Park, Tail and Marker Lamps
The park, tail and marker lamps, including the license lamps, are turned ON when the headlamp switch is placed in either the PARK or HEADLAMP position, or anytime the headlights are requested. The PARK LP fuse in the underhood accessory wiring junction block. When the headlamp switch is placed in the PARK position, battery positive voltage is applied to the park lamp circuit. The parklamp circuit then applies battery positive voltage to the DRL control module and to all the marker, park and tail lamps. The front park lamps are grounded at G101. The rear park lamps are grounded at G302. The license plate lamps are a part of the rear park lamp circuit and are grounded at G302 The inadvertent power control feature prevents the park lights from remaining on more than 10 minutes if left ON. If the park lights are turned ON after the ignition switch has been turned OFF, or is in the ACCY position, they will remain ON until turned OFF or the battery runs dead.

Finding The Source Of Electrical Shorts In Your Car

Jun 16, 2017 | Cars & Trucks

1 Answer

How to change a front turn light in a 1996 taurus.


Lamps, Parking Front Lamp-Lamp Assembly, Taurus
Removal and Installation
  1. Remove Headlamp (13008) as outlined.
Headlamp Assembly
Removal and Installation
  1. ani_caut.gif WARNING: THE REPLACEABLE HALOGEN HEADLAMP BULB CONTAINS GAS UNDER PRESSURE. THE HALOGEN HEADLAMP BULB MAY SHATTER IF THE GLASS ENVELOPE IS SCRATCHED OR THE HALOGEN HEADLAMP BULB IS DROPPED. HANDLE HALOGEN HEADLAMP BULB CAREFULLY. GRASP HALOGEN HEADLAMP BULB ONLY BY ITS PLASTIC BASE. AVOID TOUCHING GLASS ENVELOPE. KEEP HALOGEN HEADLAMP BULB OUT OF REACH OF CHILDREN.
    Position headlamp switch (11654) and headlamp time delay switch (13736) in the OFF position.
  1. Remove two bolts retaining headlamp (13008) to upper support assembly and loosen pinch bolt. Remove headlamp assembly from vehicle.
  1. Remove park lamp bulb and socket (Sable only) and headlamp bulb and socket from Headlamp Assembly as outlined.


    Headlamp Assembly (Taurus Shown, Sable Similar)


    k24744a.gif
  1. Turn lamp socket and wiring (13410) assembly 1/2 turn counterclockwise and remove from parking lamp (13200) housing.
  1. Remove screw from park/turn signal housing.
  1. Using 1/4 inch drive socket extension and swivel, insert tool through two access holes in upper radiator support. Remove screws from park/turn signal housing.
  1. Remove parking lamp from vehicle.
  1. To install, reverse Removal procedure.


    Front Lamp-Lamp Assembly, Taurus


    k23818a.gif

Nov 19, 2010 | Ford Taurus Cars & Trucks

2 Answers

Need to replace head lamps on Ford Escape 2001,


there are 4 bolts that hold lamp in. the first 2 are obious. the others are behind the front bumper..the bumper must be removed to expose them...here is a cpoy of the manual to change..good luck

Headlamp Assembly Removal and Installation
  1. NOTE: Make sure that the headlamp switch and the ignition switch are in the OFF position.
    Remove the front bumper cover. For additional information, refer to Section 501-19.
  1. NOTE: Pull headlamp assembly forward to access electrical connectors.
    Remove the headlamp assembly.
    1. Remove the three bolts.
    1. Loosen the nut.
    • Disconnect the electrical connectors.
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  1. To install, reverse the removal procedure.
    • If necessary, adjust the headlamps. For additional information, refer to Headlamp Adjustment in this section.

Apr 22, 2009 | 2003 Ford Escape

2 Answers

Headlight


On the LTZ model the caps where the headlamps hide are round rubber caps approx. 3" in diameter.
They will look like hard plastic upon first examination but are actually pliable rubber and can be easily pried up to take off. The headlamps push in and turn to release, about a quarter turn. I wear latex gloves so if I do touch the bulb it won't hurt it. Unplug the old, plug in the new and reverse the process.
Good luck.

Jun 17, 2008 | 2002 Chevrolet TrailBlazer

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