Question about 2005 Chevrolet Colorado

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WHERE IS THE LIGHT SENSOR FOR THE DRL AUTOMATIC HEADLAMP SYSTEM?

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Hi, The ambient light sensor is fitted to the far right hand corner on top of the dash,between the windscreen and the dash. This is the far right if you are in the drivers seat.
Let me know if you need more information.
Thanks
Jason

Posted on Nov 04, 2010

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Where is my relay and fuse location at for the day time running lights on a 1997 oldsmobile aurora


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

May 01, 2017 | Oldsmobile Cars & Trucks

1 Answer

01 expedition headlights stuck on


Low beam ? high beam ? DRL - daytime running lamps ?
  • The headlamps are on continuously
  • Headlamp switch.
  • Circuitry.
  • Multifunction switch.
  • DRL relay 2 (if equipped).
  • DRL jumper (if equipped).
  • Headlamp relay (if equipped).
  • RAP module (if equipped).
  • Light sensor amplifier (if equipped).
  • GO to Pinpoint Test F .

F1 CHECK THE HIGH BEAM CIRCUIT FOR SHORT TO POWER
Pull CJB Fuse 16 (20A) - central junction box ,inside the vehicle ! Ignition on !
  • Do the headlamps continue to illuminate?
  • Yes GO to F2 .
    No - REINSTALL the fuse.GO to F12 .
  • F2 CHECK CIRCUIT 12 (LG/BK), 160 (DB/WH), AND 161 (DG/OG) FOR SHORT TO POWER
  • pull fuse's CJB Fuse 21 (10A) , CJB Fuse 22 (10A)
  • Do the headlamps continue to illuminate?
  • Yes - REPAIR circuit 12 (LG/BK), 161 (DG/OG), or 160 (DB/WH) as necessary. TEST the system for normal operation.

    No - REINSTALL the fuses. If equipped with daytime running lamps (DRL), GO to F3 .

    If not equipped with DRL, GO to F6 .

  • YOU CAN FIND WIRING DIAGRAM AT
http://www.bbbind.com/free_tsb.html Do you know how to use a wiring diagram ? Videos on youtube .

F3 CHECK CIRCUIT 13 (RD/BK) FOR SHORT TO POWER
do you know how to do this test ?

pull the
DRL Relay 2

  • Do the headlamps continue to illuminate?
Yes REPAIR circuit 13 (RD/BK). TEST the system for normal operation.

No GO to F4 .


  • Do the headlamps continue to illuminate?
Yes REPAIR circuit 13 (RD/BK). TEST the system for normal operation.

No GO to F4 . F4 CHECK THE DRL RELAY 2 Carry out the relay test for the DRL relay 2; refer to Wiring Diagrams, Cell 149, Component Testing.
  • Is the relay OK?
Yes GO to F5 .

No INSTALL a new DRL relay 2. TEST the system for normal operation. F5 CHECK CIRCUIT 1032 (WH/BK) FOR SHORT TO POWER Measure the voltage between DRL relay 2 pin 2, circuit 1032 (WH/BK), harness side, and ground.
  • Is voltage present?
Yes REPAIR the circuit. TEST the system for normal operation.

No GO to F6 . F6 CHECK CIRCUIT 1033 (RD/YE) FOR SHORT TO POWER
Multifunction Switch C259
Measure the voltage between multifunction switch C259 pin 507, circuit 1033 (RD/YE), harness side, and ground.
  • Is voltage present?
Yes If equipped with DRL, REPAIR circuit 1033 (RD/YE). If without DRL, REPAIR circuit 13 (RD/BK), circuit 1033 (RD/YE), or DRL jumper as necessary. TEST the system for normal operation.

No If equipped with autolamps, GO to F7 . If without auto lamps, GO to F11 . F7 CHECK THE HEADLAMP RELAY Carry out the relay test for the headlamp relay; refer to Wiring Diagrams, Cell 149, Component Testing.
  • Is the relay OK?
Yes GO to F8 .

No INSTALL a new headlamp relay. TEST the system for normal operation. F8 CHECK CIRCUIT 7 (LG/YE) FOR SHORT TO POWER
Light Sensor Amplifier C216

Rap Module C257

Park Lamp Relay
Measure the voltage between headlamp relay pin 2, circuit 7 (LG/YE), harness side, and ground.
  • Is voltage present?
Yes REPAIR the circuit. TEST the system for normal operation.

No GO to F9 . F9 CHECK THE HEADLAMPS FOR ILLUMINATION Check the headlamps for illumination.
  • Are the headlamps illuminated?
Yes GO to F10 .

No CHECK the headlamps while reconnecting the RAP module and light sensor amplifier. INSTALL a new RAP module or light sensor amplifier as necessary. TEST the system for normal operation. F10 CHECK CIRCUIT 15 (RD/YE) FOR SHORT TO POWER Measure the voltage between multifunction switch C259 pin 15, circuit 15 (RD/YE), harness side, and ground.
  • Is voltage present?
Yes REPAIR the circuit. TEST the system for normal operation.

No GO to F11 . F11 CHECK THE MULTIFUNCTION SWITCH Carry out the multifunction switch component test; refer to Wiring Diagrams, Cell 149, Component Testing.
  • Is the multifunction switch OK?
Yes INSTALL a new headlamp switch; REFER to Lamp Switch-Headlamp . TEST the system for normal operation.

No INSTALL a new multifunction switch; REFER to Section 211-05 . TEST the system for normal operation. F12 CHECK CIRCUIT 632 (GY/OG) FOR SHORT TO POWER
Multifunction Switch C259
Measure the voltage between multifunction switch C259 pin 12, circuit 632 (GY/OG), harness side, and ground.
  • Is voltage present?
Yes REPAIR the circuit. TEST the system for normal operation.

No INSTALL a new multifunction switch; REFER to Section 211-05 . TEST the system for normal operation.

Jan 21, 2017 | Cars & Trucks

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

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

Where is the DRL relay located?


There is no DRL relay , has a lamp control module .
The daytime running lamps (DRL) activate under the following conditions:
?€¢
The ignition switch is in the RUN position.


?€¢
The ambient light sensor indicates daylight.


?€¢
The vehicle is not in the PARK position.

When the above conditions are met, the lamp control module (LCM) supplies battery positive voltage (B+) to the low beam headlamps through CKT 589 (GRY), the DRL resistor, and CKT 12 (TAN). The DRL resistor reduces the voltage supplied by the LCM. The low beam headlamps light at a reduced intensity. The DRL disable if the vehicle is placed in the PARK position. When the ambient light sensor indicates darkness, the low beam headlamps automatically switch from a reduced intensity to a regular intensity.
Lamp Control Module (LCM)
In the center of the IP, below the center heater outlets

Nov 17, 2015 | 1998 Oldsmobile 88

1 Answer

2006 grand Prix the drl stay on and will not go off if they do go off the come back on with nobody around the car keeps running the battery dead ????? Ready to burn it


Daytime Running Lamps (DRL)
The ambient light sensor is used to monitor outside lighting conditions. The ambient light sensor provides a voltage signal that will vary between 0.2 and 4.9 volts depending on outside lighting conditions. The body control module (BCM) provides a 5-volt reference signal to the ambient light sensor. The ambient light sensor is permanently grounded at ground G202. The body control module (BCM) monitors the ambient light sensor signal circuit to determine if outside lighting conditions are correct for either daytime running lights (DRL) or automatic lamp control (ALC) when the headlamp switch is in the AUTO position. In daylight conditions the BCM will command the low beam headlamps ON at reduced intensityy. Any function or condition that turns on the headlamps will cancel DRL operation.
There could be a DTC stored in the BCM pointing to a problem !
DTC B2645 Ambient Light Circuit

2

Turn the headlamp switch to the OFF position.
Do the low and high beam headlamps remain OFF?
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
Go to Step 3

3

Remove the appropriate low or high relay.
Do the lamps turn OFF?
Go to Step 5
Go to Step 4

there could

Oct 26, 2015 | Cars & Trucks

1 Answer

2006 buick allure , automatic low beams do not come on when key starts car


Headlamps
You can use the headlamps two different ways.
?€¢
Place the headlamp switch in the HEAD position for normal operations


?€¢
Place the headlamp switch in the OFF position for automatic lamp control (ALC) operation. During ALC the low beam headlamps are ON for daytime running lamp (DRL) operation in daylight conditions at reduced intensity or low beam headlamps ON at full intensity with exterior park lamps ON in low light conditions. 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 just the low beam headlamps at reduced intensity for the daytime running lamp (DRL) operation. A resistor wire is used (CKT312) to reduced the voltage which reduces the light intensity for the DRL's function. The ambient light sensor can also turn ON the low beam headlamps and the exterior lamps for automatic lamp control (ALC). Any function or condition that turns ON the headlamps will cancel the DRL operation (this means no reduced voltage to the low beam lights). Thirty seconds after you start the engine with the headlamp switch in the OFF position, the DRL will perform one of two actions:
?€¢
Illuminate the low beam headlamps at reduced intensity in daylight conditions


?€¢
Illuminate the low beam headlamps and exterior park lamps for low light conditions

The DRL operates when the ignition switch is in the RUN position, the parking brake is not set and the transmission is not in the PARK position When these conditions are met and the DRL ambient light sensor indicates daylight conditions the DRL will illuminate
Should have BCM scanned for DTC'S - diagnostic trouble codes , could have DTC'S stored in memory !
DTC B2645 Ambient Light Circuit
The body control module (BCM) monitors the ambient light sensor signal circuit in order to determine if the daytime running lights (DRL) or the auto headlights (ALC) should be turned ON in the AUTO mode. When the BCM senses the ambient light sensor voltage is between 1.75-4.9 volts, either the DRL will be commanded ON or the ALC will be commanded ON.

  1. Turn ON the headlamps.
  2. Ensure that the headlamp dimmer switch is in the LOW position.
Do both low beam headlamps illuminate?
Is only one low beam headlamp inoperative? YES / NO
IF no
  1. Disconnect the lamps switch assembly.
  2. Install a jumper between the headlamp switch headlamps ON signal circuit and ground.
Do the low beam headlamps illuminate?
Do the low beam headlamps illuminate?
Go to Step 18
Go to Step 7

7

  1. Remove the headlamp module.
  2. Install a fused jumper between battery positive voltage and the switched low beam voltage supply circuit.
Do the low beam headlamps illuminate?
Go to Step 8
Go to Step 11

8

Test for the following in the headlamp module control circuit:
?€¢
An open


?€¢
A poor connection


?€¢
A short to ground

Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
Go to Step 19
Go to Step 10

9

Inspect for a poor connection at the harness connector of the lamp switch assembly. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
Go to Step 19
Go to Step 14

10

Inspect for a poor connection at the headlamp module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
Go to Step 19
Go to Step 15

11

Test for a short to ground in the low beam voltage supply circuit. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
Go to Step 19
Go to Step 12

12

Inspect for a poor connection at the harness connector of the underhood fuse block. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
Go to Step 19
Go to Step 17

13

Inspect the inoperative low beam headlamp voltage supply and ground circuit for a high resistance, a short to ground, or an open. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
Go to Step 19
Go to Step 16

14

Replace the lamp switch assembly. Refer to Headlamp Switch Replacement .
Did you complete the replacement?
Go to Step 19
--

15

Replace the headlamp module. Refer to Relay Replacement in Wiring Systems.
Did you complete the replacement?
Go to Step 19
--

16

Replace the inoperative low beam headlamp. Refer to Headlamp Assembly or Headlamp Bulb Replacement .
Did you complete the replacement?
Go to Step 19
--

17

Replace the underhood fuse block. Refer to Testing for Intermittent Conditions and Poor Connections .
Did you complete the replacement?
Go to Step 19
--

18

Replace the BCM. Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?
Go to Step 19
--

19

Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 3

IF

Sep 30, 2015 | Buick Cars & Trucks

1 Answer

On my 1999 Olds Intrigue I have never had to turn on my lights at night. All night time driving lights come on automatically until recently. Now only the headlights come on.To get the dash lights,tail...


Without testing i would say you have DRL control module problem , But that would just be a guess .
In the night mode, the DRL ambient light sensor senses darkness. Then, the DRL module turns off the front turn lamps and turns on the headlamps through circuit 10. The DRL module also turns on the park, side marker, license, and tail lamps. If the engine should stall with the DRL control module in the night mode, the DRL control module will turn off the headlamps and leave the side marker, park, license and tail lamps on while the engine is being cranked. The headlamp switch operates as usual.
The Daytime Running Lamps (DRL) control module is designed to automatically operate exterior lights depending on outside light conditions. The DRL control module operates in two modes, the day mode and the night mode. In the day mode, the DRL ambient light sensor senses daylight. Then, the DRL control module turns on the front turn lamps (non-flashing) if under the following conditions:
• The ignition switch is on.
• The headlamps switch is in the OFF position.
• The park brake is released.

The brightness of the Vacuum Fluorescent (VF) displays is controlled by two signals: the park lamps on signal (circuit 230) and the VF dimming signal (circuit 308). With the park lamps on, the VF display of the radio, heater, A/C control (with RPO CJ2) and the instrument cluster will dim for nighttime viewing. When the park lamps on signal is not present (park lamps off), the VF displays are at high brightness for daytime viewing. When the park lamps are on, the I/P lamp dimmer switch provides a signal (VF Dimming Signal circuit 308) which controls the brightness of the VF displays when the I/P lamp dimmer switch is adjusted.

Do the Daytime running light's work ?

Nov 18, 2017 | Cars & Trucks

1 Answer

I own a 1997 chevy lumina, when I turn the car off the park lights and tail lights stay on, as well as the beeping alarm in the car, the only way to get the lights off is to disconnect the battery, it has...


it has command start ???? Is this some kind of aftermarket add on ? This shouldn't have anything to do with the running lamps . unless someone hooked something up in correctly . Does the car have DRL - day time running lamps ? The Daytime Running Lamps (DRL) control module is designed to automatically operate exterior lights depending on outside light conditions.
The DRL control module operates in 2 modes:
• The day mode
In the day mode, the DRL control module turns ON the high beam headlamps at a reduced intensity when the DRL ambient light sensor detects daylight under the following conditions:
- The ignition switch is in the RUN position.
- The headlamps are OFF.
- The park brake is OFF (released).
• The low light mode
In the low light mode, the DRL ambient light sensor detects darkness, turning OFF the high beam headlamps and turning ON the low beam headlamps through circuit 10.
Additionally, the DRL ambient light sensor turns ON the following lamps through circuit 9:
- The park lamps
- The sidemarker lamps
- The license lamps
- The tail lamps

Jan 15, 2018 | 1997 Chevrolet Lumina

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