Question about 1999 Chevrolet Blazer

1 Answer

No low beam headlights

I have replaced the multi function switch. I have checked all fuses and relays. I have scanned bcm and it has no codes in it for day time running lights.

Posted by on

  • dawnenke Oct 27, 2008

    There is power to the lowbeam side and the bulbs are good.

  • Fred Kenmuir May 11, 2010

    have you checked to see if here is power at the lowbeam side of your head lites? If there is are the bulbs good on the low beam side?

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 231 Answers

Check your ground wires for the low beam and make sure they are secure and clean. I believe that you have halogeon bulbs in there, If this is correct remember that they can not be touched by your bear hands as the oil from our skin will damage them. also when you checked them did you shake them a little to see if the filament inside is good?
If all checks out get back to me I am getting curious.

Posted on Oct 27, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

98 cad deville headlights stay on headlight & twilight sentinel switch is off along with the ign. i'm stumped can you help. Ted


Did you check the high/ low beam headlamp relay ? Stuck contacts in side relay .Plus headlamp relay an DRL relay .All are located in the underhood relay center .
The headlamps are controlled by the body control module (PZM). The battery positive voltage (B+) is applied at all times through the HDLPS fuse at the switch side of the headlamp relay via CKT 340 (ORN).
Battery positive voltage (B+) is also applied at all times through the RADIO/PHONE fuse to the coil side of the high/low beam headlight relay via CKT 40 (ORN/BLK). Both relays are controlled by the PZM at separate output cavities.

When the headlamp switch is in the HEAD position, the instrument cluster headlamp switch input is grounded through CKT 10 (YEL) and the headlamp switch. The instrument cluster sends a request through the Class 2 serial data line to the BCM in order to active the low beam headlamps. The BCM supplies positive battery voltage (B +) to the coil side of the headlamp relay via CKT 352 (WHT). The coil receives ground through the headlamp switch via CKT 10 (YEL). The coil of the headlamp relay is then energized, closing the switch contacts. Battery positive voltage (B +) is then applied through the high/low beam headlamp relay via CKT 1346 (LT BLU) and the L HDLP LO fuse and R HDLP LO fuse via CKT 12 (TAN) to the left and the right low beam headlamps respectively.
This may sound pretty complex .
1
Was the Headlights System Check performed?
--
YES - Go to Step 2
NO - Go to Headlight System Check
2
Are the park lamps also on?
--
YES - Go to Step 3
NO - Go to Step 13
3
Connect a Scan Tool to the data link connector (DLC).
Inspect the IPC headlamp switch input.
Does the headlamp switch operate properly?
--
YES - Go to Step 4
NO - Go to Step 10
4
Disconnect the instrument cluster (IPC) connector C3.
Do the headlamps and park lamps turn off?
--
YES - Go to Step 5
NO - Go to Step 6
5
Replace the instrument cluster (IPC). Refer to Instrument Cluster Replacement in Instrument Panel, Gauges and Console.
Is the repair complete?
--
Go to Headlight System Check
Is the repair complete?

6
Disconnect the body control module (PZM) connector C2.
Do the headlamps and park lamps turn off?
--
Go to Step 7
Go to Step 8
7
Replace the body control module (PZM). Refer to Body Control Module Replacement in Body Control System.
Is the repair complete?
--
Go to Headlight System Check
--

Your best bet is to take it to the dealer .

Mar 18, 2016 | Cars & Trucks

1 Answer

No low beam headlights, but high beams work.


Which do you have
Low Beams - High Intensity Discharge (HID) OR
Low Beams - Standard ?

The low beam headlamps receive voltage from the headlamp low beam relay located in the underhood fuse block. The BCM controls the relay on the headlamp low beam relay control circuit. Low beam control is determined by a signal on the headlamp dimmer switch signal circuit from the multifunction switch. When the headlamp dimmer switch signal circuit is open, the BCM grounds the headlamp low beam relay control circuit, illuminating the low beam headlamps. The right and left low beam circuits are independent are fused independently in the underhood fuse block. I suggest you take an have it diagnosed by an ASE certified repair shop that has a scan tool that can communicate with the BCM .
DTC B2575 00: Headlamp Control Circuit

Mar 15, 2016 | 2008 Chevrolet Avalanche

1 Answer

No low beam headlights hi beam okay fuses 11, 16 okay relay hdlp lo/hid okay bulbs seem okay


Did you check low beam fuses for voltage, with headlamps on lo beam? Use a testlite to check for voltage. In the diagram you see the lo/hid relay, correct? I'm not saying the relay is faulty, you need to check voltage and ground. The bcm and dimmer switch are involved, I don't know if check for headlamp/lighting trouble codes will help? Don't replace anything unless your testing points in the direction.
no-low-beam-headlights-beam-okay-fuses-cskqpewkyt2g1jj30lipok3m-3-0.jpg

Mar 04, 2016 | 2009 Chevrolet Silverado 1500

1 Answer

Headlights 2000 Chevy astro van dont work they come on some times but go right off i think theirs a ground loose or some thing new battery new alternator


I'd check the headlamp relay in the under hood fuse / relay box to start . The relay is energized by the BCM - body control module !
Voltage is available to the headlamp and panel dimmer switch at all times. When the headlamp and panel dimmer switch is activated, the two following actions occur via CKT 352 (WHT):
?€¢
A headlamp enable request is sent to the body control module (BCM)


?€¢
The headlamp relay is activated

The VE1 option is equipped with automatic headlamps, which is activated when the photo sensor detects dark conditions. A code will set if there is a fault in the photo sensor, or in the two CKT's between the photo sensor and the body control module (BCM).
The coil output of the headlamp relay travels through CKT 250 (BLK) and is grounded at G101.
When the headlamp relay is activated, power is supplied to both the LH and RH headlamp fuses through CKT 1346 (LT BLU).
LO and HI beam functions are activated/determined by the multi-function switch on the steering column.
The HI beam function must be enabled by the body control module (BCM).
The headlamp power travels through the multi-function switch at the steering column and is grounded through CKT 750 (BLK).
The flash-to-pass function is also activated by the multi-function switch on the steering column. It is powered by CKT 1840 (ORN) and enabled through the body control module (BCM) via CKT 307 (YEL).

Dec 27, 2015 | Cars & Trucks

2 Answers

2006 Chevy Impala. Headlights will not turn off... Period! I've replaced the light switch, turn signal/low/hi beam, and the BCM. No change. The only way to turn them off is pull the fuses. Help!!


Confirm that the light on alarm does not chime when the key is removed and the driver door is opened. If the alarm sounds than it is likely a body control module problem or circuit problem telling the lights to stay on.
If the alarm does not chime then I would check for a faulty relay. There are removable relays in the lighting circuits. Pull the relay and confirm that the lights remain off. The relay can have the internal contacts stuck together. Usually there are more than one relay of the same type in the under hood relay box. Replace the light circuit relay with an another identical part from another circuit and see if it corrects the problem. If so replace the relay. They are available from all auto parts store.

Nov 15, 2015 | Cars & Trucks

1 Answer

Why don't lights work?


Both the headlight switch and the BCM provide a ground, or control circuit, to the headlight relay coil circuit for manual or automatic headlamp operation. When you place the headlamp switch in the OFF position, and the ambient light sensor indicates low light conditions, the BCM energizes the headlamp relay for low beam operation. You may switch the headlights to high beam by pulling the dimmer switch handle toward you until the dimmer switch is activated. When the dimmer switch is placed in the HIGH position, the indicator lamp input to the BCM is pulled low. The BCM then sends a class 2 message to the instrument cluster in order to illuminate the high beam indicator lamp.
Low and High Beams Headlamps Inoperative ?
Replace the headlamp switch. Refer to Headlamp Switch Replacement .
Did you check the headlamp relay ? Location ,left instrument panel
Did

Nov 11, 2015 | 2001 Chevrolet Monte Carlo

1 Answer

Were is headlight low beam relay


It is located in the under hood fuse/relay box . It's non -replaceable ,if bad whole fuse box has to be replaced ! The low beam headlamps may be turned ON in 3 different ways:
?€¢
When the headlamp switch in the HEAD position for normal operations


?€¢
When the headlamp switch is in the AUTO position, for automatic lamp control (ALC)


?€¢
When the headlamp switch is placed in the AUTO position, with the windshield wipers ON in daylight conditions, after a 6 second delay

Battery voltage is applied at all times to the coil and switch sides of the LOW BEAM PCB Relay located in the underhood fuse block. When the headlamp switch is placed in the HEAD position, ground from G202 is applied through headlamps ON switch signal circuit to the body control module (BCM), signaling the headlamps ON request. In response to this signal, the BCM applies ground through the headlamp low beam relay control circuit energizing the low beam relay. With the relay energized, battery voltage is applied through the switch side of the relay, the left and right low beam fuses, and the low beam supply voltage circuits illuminating the low beam headlamps. Ground for the left headlamp is provided at G101 and the right headlamp at G100.
Low Beam Relay Test

  1. Ignition OFF, disconnect the C2 harness connector at the underhood fuse block.
  2. Connect a test lamp between the control circuit terminal A5 and B+.
  3. Ignition ON, command the Low Beams ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
  4. ?‡'
    If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the BCM.


    ?‡'
    If the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.

  5. If all circuits test normal, replace the underhood fuse block.
  6. Ignition OFF, disconnect the harness connector at the inoperative low beam headlamp. Test for less than 5.0 ohms between the ground circuit terminal B and ground.
    ?‡'
    If greater than the specified range, test the ground circuit for an open/high resistance.

    Connect a test lamp between the supply voltage circuit terminal A and ground. Ignition ON, command the Low Beams ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
    ?‡'
    If the test lamp is always ON, test the supply voltage circuit for a short to voltage. If the circuit tests normal, replace the underhood fuse block.


    ?‡'
    If the test lamp is always OFF, test the supply voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the underhood fuse block.

    If all circuits test normal, test or replace the low beam headlamp.

Jun 10, 2015 | 2006 Chevrolet Chevrolet Impala LS

1 Answer

99 GMC Jimmy DRL, headlights, and High beams not working amber lights work.


headlights control by headlamp driver module relay to the BCM and the light sensor on dash next to the winshield defrost vents.headlights also control by high beam relay.

Nov 18, 2013 | 1999 GMC Jimmy

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

1 Answer

I only have high beam headlights. I have replaced the light bulbs and checked the fuses. All the other lights work.


about troubleshooting your headlights on your vehicle. I would isolate the wire that comes from the headlight switch to the headlamp bulbs for low beam and check to see if there is a short in the wire. You can find this wire by using a test light turn on the key and get a good ground with the test light poke the wire and see if the test light illuminates with the headlight switch on. ---- Also check the wires, and check the fuse for your low beams. could of blown a fuse on your lows, but your highs will still work.
Every single time I have had a failure of low beam in a headlight without failure of high beam, it has been because the lamp bulb or halogen lamp module has reached the end of its serviceable life, not because of any wiring problems. Low beam burns out first because it is on the most. If low beam is lost simultaneously in both headlights, I would check fuse first, then the headlight switch. If low beam is lost on one side only, it is almost always going to be due to the bulb or lamp module needing to be replaced. In that case, replace them in both headlights because the other one will be going kaput in short order, as well.
There is something to check. Does the low beam relay click when you turnt he low beams on?
if it does not click then
Then find the BCM at the base of the steering column. In there find the grey connector and in there, find the pink/white wire in terminal A4. Use a wire to jump that wire to ground. IF the low beams come on, then it is likely the BCM is bad.
Also check a bad wire between the fuse block and the BCM. before replacing the BCM . Start under the fuse block. This is the fuse block under the hood.
This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya

Mar 18, 2010 | 2004 Chevrolet Cavalier

Not finding what you are looking for?
1999 Chevrolet Blazer Logo

Related Topics:

70 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

70346 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22041 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6864 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...