Question about 1999 Pontiac Sunfire

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Drl and high beams dont work

Daytime running light dont work at all. The headlights work, but when the high beams are turned on then none of the lights work. Replaced the relay but still doesnt work.

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Check the bulbs -- the daytime running lamps use the highbeams on the resistor -- There are two filliments per bulb one high; one low. If both high beam filliments are out nothing will work....replace bulbs if this is the case.

Posted on Aug 02, 2009

  • Justin Aug 02, 2009

    Check the bulbs -- the daytime running lamps use the highbeams on the resistor -- There are two filliments per bulb one high; one low. If both high beam filliments are out nothing will work....replace bulbs if this is the case.

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U have a bad ground it sounds like. Get a fuse tester b sure ur getting power to the switches n relays ect. Check bulbs obv. In my case was a bad ground and a major headache

Posted on May 30, 2013

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I need clarification on 2003 Chev Malibu DRL problems:


That piece you think is a ceramic DRL module is a resistor , When in DRL mode voltage to the low beam headlamps circuit goes through that resistor dimming the headlamps from low beam to daytime running lamps . It sounds to me like you need a new resistor ,but without doing some electrical testing it could be a lot of things . The DRL relay in the under hood fuse box could have a problem , could be the BCM - body control module , the ambient light sensor etc... Here is how daytime running lamps work .
Daytime Running Lamps (DRL)
The ambient light sensor is a light sensitive transistor that varies its voltage signal to the body control module (BCM) in response to changes to the outside (ambient) light level. When the BCM receives this signal it will either turn on the daytime running lights (DRL) or the headlights. Any function or condition that turns on the headlights will cancel the daytime running lamps operation. With the headlight switch in the OFF position, the headlights will either be turned ON or OFF, after an approximate 30 second delay depending on whether daylight or low light conditions are sensed. The HTR A/C IGN fuse in the underhood junction block supplies ignition positive voltage to the daytime running lamp (DRL) relay coil circuit. The DRL relay switch contacts are connected to the low beam circuit. When the headlamp switch is placed in the OFF position, the BCM will either turn on or off the daytime running lamps, depending on whether daylight or low light conditions are sensed. The BCM energizes the DRL relay, closing the switch contacts and grounding the low beam circuit. Ground is provided at G101. The DRL illuminate the low beam headlights at a reduced intensity. The DRL will operate when the ignition switch is in the ON position, the gear selector is not in the PARK position and the parking brake is released. When these conditions have been met and the ambient light sensor indicates daytime conditions, the DRL will illuminate.

Feb 25, 2016 | Cars & Trucks

2 Answers

Daytime running lights not working


Assuming this is an LX, check 7.5A fuses 9 and 5 in the driver's underdash fuse/relay box. Fuse 9 applies power to the DRL indicator light in the gauge assembly which connects to the DRL control unit. Fuse 5 supplies power to the DRL control unit when the ignition is on. Also check 100A fuse 41 in the underhood fuse/relay box which supplies power to the headlight relays. Setting the headlight switch to HEAD causes the headlight relays to close and apply power through 20A fuses 45 and 43 in the underhood fuse/relay box to the low beams. Low beam power also passes through the DRL diode to close the high beam cut relay and prevent high beam use during DRL operation.

Sep 23, 2012 | 2002 Honda Accord

3 Answers

Daytime Running Lights Inoperative 2002 Toyota Camry


[Information] For a 2002 Toyota Camry, the Daytime Running Lights (DRL) operate utilizing the High Beams (inner Lamps closer to the center of the vehicle front) at a reduced power.

[The troubleshooting process:] Review the Owner's Manual and ensure the test configuration matches the following criteria:
1. According to the 2002 Toyota Camry Owner's Manual (Check your Owners Manual):
"The DRL system will make your headlights come on at a reduced brightness when:
The light switch s in the "DRL" position.
The ignition is on with the engine running.
The headlight switch is off.
The parking brake is released."


2. Set the Test Conditions according to Step 1 above.

3. Check the headlight bulbs to ensure they are not burned out. If one burns out, there is a fair chance that the other would have burned out at the same time. Replace as necessary. In this case, if the high beams operate, the DRLs should also operate.
4. Test the system, ensuring the step 1 conditions are set. (Engine running, Multi-function Switch on Turn Signals in "DRL" position, headlight switch off (repeating what the manual says -- it should be obvious that in the "DRL" position, the headlight switch should be off / do not have the switch positioned to "High Beam"), and the Parking Brake "off").
5. If DRL lights do not work, check the engine compartment Fuse and Relay Box. there is a 5 Amp DRL fuse -- replace it with the spare. Test (step 4).
6. If it does not work, swap around or replace relays -- there are three (3). Any one of them could be bad (stuck or burned out). Test (step 4).
7. Other less likely possible issues could be that the Multi-function Switch is broken or a connection / wire is broken. [Beyond the scope of this process.]


My problem was that the test configuration did not have the engine running and parking brake off - Step 1. Problem solved with much thought, repetitive tests on the vehicle and going back to the basics -- what does the Owner's Manual say and where are the applicable fuses and relays located?

Dec 30, 2011 | 2002 Toyota Camry

2 Answers

Daytime running light module location 2001 impala


The daytime running lamps in your 2001 Chevrolet Impala are controlled by the Body Control Module (BCM) Here is a description of how the system works:

The ambient light sensor is a light-sensitive transistor that varies its voltage signal to the Body Control Module (BCM) in response to changes in the outside (ambient) light level. When the BCM receives this signal, the BCM turns ON either the DRL or the headlamp relay for auto headlamp operation. Any function or condition that turns ON the headlamps will cancel the DRL operation.
Thirty seconds after you start the ignition with the headlamp switch set in the OFF position, the DRL will perform one of two actions:

Illuminate the high beam headlights at a reduced intensity in daylight conditions
Illuminate the low beam headlights in low light conditions
The DRL/EXT lamps fuse in the top of the engine fuse block supplies battery positive voltage to both the DRL switch contacts and to the DRL relay coil. When the BCM energizes the DRL relay coil, current flows through the right high beam lamp, to the left hand high beam lamp, to the energized DRL relay switch contacts, to ground G101.
The high beam headlamps are now in series, and split the voltage so that the headlamps illuminate at halt intensity. The DRL operates when the ignition switch is in the RUN position, and the parking brake is not set or the transmission is not in park. When these conditions have been met and the ambient light sensor indicates daytime conditions, the DRL will illuminate.

Oct 10, 2011 | 2001 Chevrolet Impala

1 Answer

2002 honda civic Day time running warning on change bulbs check


High beams dont go on at all? Does the DRL light dissapear when u turn on the headlights? Now, because your high beams dont work, it more likely means that you need to replace your bulbs. Because if it would be a problem in the car itself, only the DRL system would fail. Im 80% sure that changing your bulbs will solve the problem.

Apr 20, 2010 | 2002 Honda Civic

2 Answers

What is the DRL warning light on the dashboard of my 2007 Honda CRV?


On my 2007 Honda CR-V The DRL code appeared on the dash board. Additionally I had only one high beam (on the passenger side); both low beams were fine, but I did not have a Daytime Running Light on the drivers side. The DRL code was really misleading because the real problem was that the high beam element in the headlight bulb was burned out. Note that the daytime running light is not a seperate bulb -- it is the high beam element which is powered at a low voltage. Once I replaced the head light bulb everything worked fine and the DRL code on the dash board was gone. So if the DRL message appears what you really need to do is replace the headlight bulb (there are YouTube videos which show how to do this - but search for headlight replacement, not for DRL fix). Be careful not to touch the new bulb with you hands since premature burnout can occur from the grease off your skin. I got my bulb from Wal-Mart for $8.88 (it's a 9003/HB2 for the 2007 CR-V) -- that's a pretty cheap fix.

Feb 27, 2010 | 2007 Honda CR-V

2 Answers

My r/f high beam is out, so I replaced the bulb but I still have no high beam. Also my daytime running lights stopped working, could they possibly be related?


Yes your daytime running light just uses the headlight bulb on a lower voltage so if the headlight is not working the drl will not work as well, they are dirrectly related,,check the head light fuse,and check to make sure the bulb is good,,

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4 Answers

Daytime running lights work but go out when I turn headlights on. Ruled out headlight switch, bulbs, fuses, relay, ground, and DRL module. 98 silverado 1500 has no high beams. headlights work with parking...


If you have daytime running lights but when you turn on your regular headlight on they do not come on. Take the bottom of your steering column off (Two Small Screws) and look at the back of your turn/dimmer switch make sure that the light blue wire is connected. The wires will break off after years of raising and lowering your steering column.

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