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Trying to change the fuse for the drl (daytime running lamps) and headlight but don't know which fuse it is

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Look on the flap/cover and it tells you

Posted on Jan 10, 2009

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2003 Chev Malibu. Radio inop with key in on position, auto systems not working, I.e. daytime running lamps, auto lock and drivers unlock, fuel and temp gauges not working.


Have you had vehicle check for DTC'S diagnostic trouble codes . Check fuse's an relays , find wiring diagrams to see what controls these systems ?
Radio/Battery fuse , fuse G 10 amp located in the right instrument panel fuse box . Do you know where this ?
Fuse Block - Right IP - On the right side of the instrument panel
An there is one on the other end of the instrument panel ,driver side .
Fuse Block - Left IP- On the left side of the instrument panel The fuel an temp . gauges not working is probably the step motors inside instrument cluster . GM had problem with this 03 to 06 .
How to repair GM Instrument Cluster Speedometer Gauge Stepper

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.
DRL operation in Manual Transmission equipped vehicles will occur when the ignition switch is in the ON position, and the parking brake is released. - check fuse's an relay first.
Door Lock System Components
The power door lock system consists of the following components:
?€¢
Driver door lock switch


?€¢
Front Passenger door lock switch


?€¢
Body Control Module (BCM)


?€¢
Relays: Driver Door Unlock--if equipped, Door Unlock, and Door Lock


?€¢
Door Lock fuse 15A


May 25, 2016 | Cars & Trucks

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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

1 Answer

Where is the fuse located for the daytime running lights on a 2005 Chev Siveraado?


It is located in the underhood fuse/relay box , marked DRL 10 amp fuse ! Also if that is good check the DRL relay in the same fuse/relay box .Your light sensor could also be bad .
The daytime running lamps (DRL) will operate when the ignition switch is in the RUN position, for automatic transmissions (A/T), the gear selector is not in the PARK position, the headlamp switch is in the AUTO position, and for manual transmissions (M/T), the park brake is released. When these conditions have been met and the ambient light sensor indicates daytime conditions, the DRL will illuminate. 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 DRL or the headlamps for auto headlamp operation. Any function or condition that turns on the headlights will cancel the daytime running lamps operation. The DRL can be manually turned OFF by depressing the AHL/DRL switch in the headlamp switch
Do you know that on inside of fuse box lid it shows what fuse is what .

Feb 01, 2016 | 2005 Chevrolet Silverado

1 Answer

Dim head lamps and day light running lamps won't come on my 2000 Buick lasabre


Daytime Running Lamps
With the daytime running lamps (DRL) programmed to be on, the DRL will operate when the ignition switch is in the ON position, the gear selector lever is out of the PARK position, the headlamp switch is in the OFF or PARK position, and the ambient light sensor indicates daytime conditions. Battery positive voltage (B+) is supplied to the DRL relay coil through the underhood fuse block. Battery positive voltage is supplied through the underhood fuse block FOG/DRL Fuse to the DRL relay normally open contact. The DRL relay normally closed contact receives ground for normal high headlamp operation. When the dash integration module (DIM) determines that conditions are right for the DRL, the DIM grounds the DRL relay coil. This energizes the DRL relay coil and closes the switch to the normally open contact. Battery positive voltage (B+) is supplied to the LH and RH high beam headlamps in series. The high beam headlamps split the voltage and each lights at half intensity. Current will follow the path from the DRL relay to the LH high beam headlamp, HDHIBML Fuse, HDHIBMR Fuse, the RH high beam headlamp, then to ground.
Does your vehicle have
Twilight Sentinel
The twilight delay switch in the headlamp switch is supplied a reference voltage from the instrument panel integration module (IPM). It is supplied a reference ground from the IPM. The switch is a potentiometer that resistance varies as the switch is moved. The IPM receives an input voltage proportional to the resistance of the potentiometer. The IPM sends a class 2 message to the dash integration module (DIM) indicating the on/off status and delay length for the twilight sentinel. With the twilight sentinel in an ON position, the DIM will automatically control the headlamps on/off status depending on the nighttime/daytime status of the ambient light sensor. The DIM will use the twilight sentinel delay length to know how long to keep the headlamps and park lamps on after the ignition switch transitions from ON to OFF during nighttime conditions.
If you don't know about these things you best bet is to take it to an ASE certified repair shop or the dealer .
If you
Your best

Nov 30, 2015 | Buick 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

1 Answer

Daytime running lights are not working. The regular headlights are though. The light symbol on the driver's side keeps blinking to let me know the daytime running lights are out. i swiched all the


There is a microprocessor in the instrument cluster that grounds the DRL relay - do you know if the relay has power from the headlight fuses and is being grounded by the processor ?

Aug 23, 2012 | Pontiac Sunfire Cars & Trucks

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

2 Answers

Where is the Daytime driving Lamp relay located


follow the wires to the drl relay. It must be inline from the regular light switch to the headlamps. I have a 1990 Cadillac Deville that has an aftermarket module that controls the daytime running lamps, and it is mounted on the driver's side wheel well.

Some relays are found in the fuse box under the hood.

If your daytime running lamps burnt out, take it to an electrical shop and ask them to check it out.

If you buy an aftermarket daytime running lamp kit, they can install it for you.

But, I agree, you should check for voltage and function at the relay for the daytime running lamps on your Astro.

But, if all else fails, the electrical shop should be able to diagnose and repair this problem.

Jul 21, 2010 | 1999 Chevrolet Astro

1 Answer

Headlights do not turn on at the light switch.


manual headlamps

Visual Inspection Chart
Mechanical Electrical
  • Headlamp switch
  • Multifunction switch
  • Central junction box (CJB) fuse:
    • 7 (30A)
    • 30 (15A)
    • 46 (10A)
    • 47 (10A)
  • Circuitry
  • Headlamp bulbs
  • Daytime running lamp (DRL) relay No.1


Autolamps

Visual Inspection Chart Mechanical Electrical
  • Headlamp switch
  • Central junction box (CJB) fuses:
    • 19 (5A)
    • 56 (30A)
  • Circuitry
  • Headlamp bulb
  • Daytime running lamps (DRL) full relay No.1 (if equipped)
  • Vehicle security module
  • Photocell


If autolamp system, Vehicle security module has a headlamp rela inside of it. under left side of dash.

May 26, 2009 | 2002 Ford F250 Super Duty SuperCab

1 Answer

Day time running lamps


The day time running lamps are your headlights, the parking lights also conventionally known as the running lights serve no purpose during daylight hours and as such are not necessary in the daytime, and are not illuminated by the DRL module. The DRL (Daytime Running Lights) module illuminates the headlamps in a slightly dimmer state than night time dim headlamps, but does not turn on the conventional running lights. The only way you'll get conventional running lights during the day is to turn them on manually. I just reviewed the wiring schematics for that system, and the DRL relay bypasses the dimmer switch when active and prevents high beam operation, and feeds current directly to the low beam headlights, there is no connection to the parking light circuit from the DRL module wiring.

Nov 01, 2008 | 2000 GMC Sierra

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