M/C DRL
- Thread starter L36 SS
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i shoulda deleted snip from that post you coulda bent it and been able to bend it back, his didnt trigger a light and there's nothing jumpering the primary side of his setup, let me dig through my stash and see if i have any 5pin smalls
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:
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 half 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 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
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 half 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.
all the lights were off then? yeah my bad i didnt think about that hard enough, it would be able to diagnose any circuit problems cause the bcm controls everything.
i did a quick look and could find any but 4 pins i have a whole bucket that probably has a few in it but youll have to pull the cover off the relay and wedge it closed in the NC position, the bcm will think everythings hunky dory and the drl's will stay off
this people... is why it sucks to have a computer control your shit
i did a quick look and could find any but 4 pins i have a whole bucket that probably has a few in it but youll have to pull the cover off the relay and wedge it closed in the NC position, the bcm will think everythings hunky dory and the drl's will stay off
this people... is why it sucks to have a computer control your shit
Yea, and when they turn off the drl's they either do what I did to the relay, or pull the green wire out of the back of the fuse box. Either way, the light will come on. ZZP sells a kit that will turn them off for $20. I'm wondering if I replace the relay, and get it the kit if it will work?
But my lights will burn out in no time! Why can't my car be like a GP where you pull the relay and your good to go? Chevy thing. lol
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