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This model uses a relay for the control of the daytime running lights. It is located in the under hood fuse/relay panel. There is also a fuse there that supplies power to this relay
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There is not a separate fuse nor is there a relay ,A LCM - lamp control module controls the DRL .
the lamp control module (LCM) supplies battery positive voltage (B+) through the DRL resistor to the low beam headlamps. The voltage drop across the DRL resistor causes the low beam headlamps to light at a reduced intensity. The DRL are disabled if the high beam headlamps are on or if the gear selector is placed in the PARK position. When the ambient light sensor indicates darkness, the low beams automatically switch to regular intensity.
Lamp Control Module (LCM) (Oldsmobile)
Under the left side of the IP, to the left of the steering column
Daytime Running Lamps (DRL) Resistor
To the left of the engine compartment, near the underhood fuse block
CarGurusJul 22, 2009 - Daytime Running Lights - Relay clicks and then DRL shuts down. ... housing piece, but I couldn't seem to find any store or dealer to locate the specific part. ... The same EXACT thing is happening in my 2001 Pontiac Sunfire.Missing: microprocessor
Aug 24, 2009 - My wife's 2003 sunfire has a problem with the day time running lights and ... Your instrument cluster has a microprocessor which energizes the relay. .... Daytime Running light Module and relay on a 2001 Pontiac Sunfire GTX ...
if replacing the high beam bulbs do not fix the DRL issue ,see my tip under 2001 to 2005 civic daytime module repair.The accord you have has the same module.
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.
The drl module is part of the body control module,(bcm) located under the dash on the heater box. The drl relay is in one of 2 places. In the
fuse/relay block on the left fender. Or taped to the body harness near
the hose for the rear washer. The rear washer hose comes out of the
bottom of the front washer bucket to the firewall. Hope this helps.
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